"The Rolls Royce of Reception"

By Richard T. Ammon

Last updated: 2/4/08 - 738

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Abbott

Abbott Radio Mfg. Co.

Abbott 8 Compartment Type

February 1927

8 - 201A or 199

12 x 28

2 - Drum

(L)

(Abbott)

Thick Square

NIF

Harry Abbott

Chicago

CO-OP Monthly - February 1927 - P82

No Scheme Found

eBay pictures. This set was obviously manufactured; not a kit. Two rows of four 201A sockets. "This set embodies the latest advances in radio engineering principles." "Completely shielded." "Can be used with 199 tubes, but 201-A tubes are recommended for best results." "Grained mahogany cabinet." "List with accessories, $125. Ea. 73.50" Also see Abbott under RCA below. "12" high, 15" deep, & 28" long".

" "

" " " " " " " "

Abbott 8 Table Type

February 1927

8 - 201A or 199

12 x 28

2 - Drum

(L)

(Abbott)

Thick Square

NIF

Harry Abbott

" " "

CO-OP Monthly - February 1927 - P82

No Scheme Found

This set was obviously manufactured; not a kit. Two rows of four 201A sockets. "This set embodies the latest advances in radio engineering principles." "Completely shielded." "Can be used with 199 tubes, but 201-A tubes are recommended for best results." "Grained mahogany cabinet. 12" high, 15" deep, 28" long". "Legs are removable." "List with accessories, $150. Ea. $88.26". Also see Abbott under RCA below.

Acme

Acme Apparatus Company

Long Wave 30 K.C. Transformer

May 1924

n / a

Acme 30 K.C.

Open Frame

Heavy Laminated Iron

n / a

Cambridge, Mass.

Chicago Salvage Store - Catalogue #14 -1926

QST - December 1924 - P9 - Transformer "30 K. C." only

n / a

Transformer peaks at 7100 meters (42 K. C.). Referenced QST - May '24 - P72. See E. I. S. for usage. Sold these transformers as late as 1929 (Lewis Radio Jobbers).

" " " " " " " " "

Eight Tube Superheterodyne

May 1924

8 - 201A or WD12 or 199

7 x 30 engraved

5 - 6

(L)

Acme 30 K.C.

Open Frame

Heavy Laminated Iron

Two Duo-Laterals Coils

" " " " " "

Chicago Salvage Store - Fall -1924

Used honeycomb (Duo-Lateral) coils shunted by a fixed condensers for Input (Filter) stage. Oscillator coupler (variometer) with a variable pickup coil is used. Used two Acme enclosed variable condensers and two Acme audios. Used 201As, WD12s, or 199s with adapters. Used 200A in second detector. Chicago Salvage promotes this as a "knockdown", which is not a legal (RCA) term. Chicago Salvage priced the $78 complete kit at $58.85 in the Fall of 1924. 7x30 inch engraved panel.

Acme - Benson

n / a

Benson Reflexed Super-Heterodyne

February 28, 1925

6 [+ 1] *

6 - 199 or 201A

(7 x 24)

(Acme Type R3)

Small Rectangular

500

Iron

NIF

Thomas W. Benson

NIF

RWI - March 7, 1925 -Part 2 - P8 - Construction / Wiring

RWI - April 4, 1925 - Revised - P9 - Scheme)

Two part introduction and construction of this reflexed Super in Feb. 28 & March 7, 1925 RWI issues. Layout in March 7. Used Acme 600 meter RF transformers (Type R2 or R3) for IF; very unusual! Used 6 tubes and a Brownlie Crystal Detector (6+1). Original set used 199s, but Benson says 201As will work. Used Plate Modulation of Ultradyne fame. Benson said reflexing was easier with the higher intermediate frequency, possibly 500 KC [??]. That's close to the standard 455 KC today. Benson is called "Noted Radio Engineer" in article. ??x?? panel.

Acme - Custom-Built

n / a

Seven Tube Custom-Built Superheterodyne

(1926)

7 -

(10 x 24)

NIF

(Acme Type R3)

Small Rectangular

Iron

NIF

Ron Lawrence owns this beautiful radio. Has an aluminum-lined case and uses Acme "D" coil attached to the variable condenser as in the Reflex kit. Aluminum front panel approximately 10x24 inches.

Adams

n / a

Eight-Tube Superheterodyne

October 1924

8 - 201A

10 (?) x 30

1 - V

L or W

Adams

Flattened Side Tuna Can

NIF

Captain H. J. Adams

Camp Vail, N. J.

PEPL - November 22, 1924 - P3 - Construction

No Scheme Found

In the Philadelphia Evening Public Ledger, "The Radio" section, November 22, 1924, is the fourth in a series started October 25, 1924 and ending November 29 with the construction of the IF transformers. Captain H. J. Adams was the Army's Chief Communications Instructor Twenty-eighth Division, United States Signal Corps. For the times, different layout design using subpanel. Oscillator coil has three wound sections. Very small Pickup coil next to tube one's socket. Adams IF transformers are round (Tuna Can) except one-quarter flatten on the side to allow it to stand straight up. A small loop antenna can be used with the Captain Adams. 10(?)x 30 inch panel.

Aero

Aero Products, Inc.

Aero Coil Oscillator

October 1925

n / a

Chicago

CRCB - Summer 1926

n / a

Oscillator coil only. Original cost $5.50. Got down to $3.30. Last advertised Alter catalog October 1927. Addressed at 1772 Wilson Avenue.

Aero Dyne

Aero Radio Co.

Aerodyne Standard

(1924)

7 - 201A

NIF

PNF

Detroit

Aero Radio Brochure

These appear to be completely wired and ready to play. Taken from brochure: Called "Rolls Royce of Reception". "Two tone solid walnut cabinet - Wax finish. Walnut bakelite panel. Full base panel. All wiring completely concealed. Battery cable with each terminal permanently marked. Straight line frequency condensers. Combination battery and amplification switch. Manufacturer's warranty covers the entire set. Factory service department is at your disposal. Only the finest materials are used in its construction. Every Aerodyne is a masterpiece of workmanship." "Manufactured...20 West Wakken Avenue". "Standard" Used 201As. Designed for a loop. $200.00.

" " "

" " " " "

Aerodyne Premier

PNF

(1924)

7 - 201A

NIF

(3)

(N)

(L)

NIF

PNF

" "

" " " " " " "

See immediately above for details. "Built-in horn with Amplion unit". Designed for a loop. $285.00.

" " "

" " " " "

Aerodyne - The Luke

PNF

(1924)

7 - 201A

NIF

(3)

(N)

(L)

NIF

PNF

" "

" " " " " " "

See immediately above for details. "(Wall) console with built-in directional loop and horn with Amplion unit. Space for all batteries and charger." $400.00.

Aircore

(Radiophone Equipment Co., The)

Aircore Super Eight

September 1924

(K)

NIF

Aircore

PNF

Air

RB - September 1924 - P480ish

Shown in unrelated "Timmons Talkers" ad in RB, Sept '24. Has two tuning dials and five rheostats. Nothing else is known.

Airkore

Radiophone Equipment Co.

Airkore Super-Heterodyne Kit

November 1924

NIF

Airkore

Cylindrical

NIF

Air

Philadelphia

R - February 1925 - Kit & Blue Prints

Good ad in RB Nov '24 P156. Kit: $20. R, November 1924, Kit & Blue Prints. "Non-magnetic shield". "Accurately matched in sets of four". Three IFs and a matched Filter transformer. Radio ad of Jan 1925: "Improved". Transformers listed in RTD, Feb '25 & RTD, Aug '25. Addressed at 1409 West York Street, Philly

All American

Rauland Mfg. Co.

Long Wave Radio Frequency Transformer Model R-110

May 1924

n / a

All American

Misc

Iron

Air

Chicago

R - May 1924 - P84 - IF Transformer

First advertised in R & RN - May '24. IF transformer only ($6). Says "Build 'the Rolls-Royce of Radio". "For wave lengths 4,000 to 20,000 [15 to 75 KC]. IFs peak at 30 KC. R - May '24 also shows first reference to the nickel-plated "Type R-110" IF transformer only. (No reference to a "Kit".) Called "All American" from the 82nd Army Division he was in in WWI. See Douglas book for details. Ads addressed at both 2642 and 2650 Coyne Street.

" " " "

" " " " " "

Super-Fine Kit

September 1924

8 - 201A

n / a

All American

Tuna Can / Misc

Iron

Air

" " "

R - May 1924 - P84 - IF Transformer

" " " "

" " " " " "

Super-Fine Super Heterodyne

September 1924

8 - 201A or WD12 or 199

7 x 30

All American

Tuna Can / Misc

Iron

Air

A. Elkins

" " "

PR - July 1924 - P39 - Kit

CRCB - Fall 1924 - P46 - Construction

CRCB - Fall 1924 - P48 - Construction

Kit named "Super-Fine". R - Sept '24 shows "Type R-120 Air Core 10000 Meter Filter", "Type R-130 Short Wave RF Coupler" [Oscillator Coupler] and "Key Book" first mentioned. Also see QST, Dec '24, P105, Kit. Standard catalogue for Spring'26 calls it "DeLuxe".

" " " "

" " " " " "

"Music Room" Super-Heterodyne

September 1925

8 - 199 or 201A

7 x 18

All American

Tuna Can / Misc

Iron

Air

" " "

CRCB - Fall 1925 - P103 - Parts

CRCB - Fall 1925 - P99 - Construction

CRCB - Fall 1925 - P101

Designed by the CRCB Laboratory. CRCB, Fall '25 ad shows all the transformers, 30 KC (10,000 meters) filters, and coils. Radio Review, Oct '25, P35: Short article and scheme with no values. Barawik catalogue for Fall '25 and Spring '26 says "As specified and Designed by Citizens Radio Call Book Laboratory…The Music Room Super-Heterodyne. $69.50." Also, RR, Oct '25, P35, lite construction. Construction and advertising show 199 tubes, but my set has 201As. Reportedly, this radio appeared in 1925 in RN also (No month given). Also see Note 21.

All-American - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

All American

Tuna Can / Misc

Iron

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Remler, and Silver-Marshall. The All American Oscillator Coupler was NOT used here, likely a Remerl 631. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

All American - Calcaterra

n / a

Practical Super-Het

May 1925

8 - 199

7 x 18

All American

Tuna Can / Misc

Iron

Air

Joseph Calcaterra

New York City

RA - May 1925 - P19 - Construction

RA - May 1925 - P20 / 21

It is the All American "Super-Fine Super Heterodyne Kit", but in a smaller format; almost half sized (18 inch panel compared to the original 30 inch panel). 10, 000 meter (30 KC) IFs. All-American parts: Type 130 RF Coupler [Oscillator Coupler], Type 110 Long Wave RF Transformers, & Type 120 10,000 meter tuned RF Transformer. Used 199s. See All American - Standard Radio Supply below. Likely the complete kit for this same configuration. 7x18 inch panel.

All American - Custom-Built

n / a

Custom-Built Three-Dial Superheterodyne

(1925)

8 - 201A

(7 x 36)

1 -V & 1 - MA

NIF

All American

Tuna Can / Misc

Iron

Air

Three dial radio. Ron Lawrence owns this beautiful, huge Superhet. DeForest-style tuning on front end. Front panel approximately 7x36 inches.

All American - Randolph

Randolph Radio Corporation

8-Tube Super-Heterodyne

October 1924

8 - 201A or WD12 or 199

8 x 36

All-American

Tuna Can / Misc

Iron

Air

Chicago

RN - October 1924 - P509 - Complete

Used either All-American or Columbia (shown in picture) IFs. Randolph was a parts clearing house selling cheap kits. $59.75 ^ Pictured with Allen-Stats.

All American - Standard Radio Supply

Standard Radio Supply

All American Deluxe 8-Tube Super

Spring 1926

8 - 199

7 x 18

All American

Tuna Can / Misc

Iron

Air

Chicago

Standard Catalogue - Spring 1926

Standard [Radio Supply] sold the "Super-Fine Essential Kit" with 199 tube sockets and their choice of parts to make a smaller footprint. Complete parts $87.00. With batteries & tubes, $126.65. See All American - Calcaterra above. Likely the same configuration. 7x18 inch panel.

AMACO

American Apparatus Co.

(Amacodyne CN-8)

November 1925

(K)

(8)

Richmond, Indiana

RN - November 1925 - P686 - Radio Set Directory

RN, Nov '25 says "…Dry cell or storage [batteries]…Outdoor or indoor [antenna]". NC-8 Used separate speaker, has one control, and is $60. This company might have association with the Quality Radio Shop's "Hi-Power Long Wave Super Heterodyne Transformers" from the Fall of 1925 [see below]. Transformers still listed in RTD, Aug '25.

" " "

" " " " " " " "

(Amacodyne CN-9)

November 1925

(K)

(9)

" " " " " "

RN - November 1925 - P686 - Radio Set Directory

RN, Nov '25 says "…Dry cell or storage [batteries]…Outdoor or indoor [antenna]". NC-9 Used a Baldwin speaker built-in, has one control, and is $80. This company might have association with the Quality Radio Shop's "Hi-Power Long Wave Super Heterodyne Transformers" from the Fall of 1925 [see below].

American Radio

American Radio Manufacturing Co.

Super-Assembly 7 Super-Heterodyne

September 1924

Kansas City, Mo.

American Radio Mfg. Catalogue - Sept 1924 - Back - Complete

"Baseboard instruments, panel instruments includes cabinet with collapsible loop for $77.95". "Semi-assembled".

" " " " "

" " " " " " " " " " " "

Acme Double 'A' Super-Heterodyne

September 1924

(K)

" " " " "

RN - September 1924 - P366 - Kit / Engraved Panel

"Acme Parts Kit Only $69.13". American Radio Mfg. Co. is "Wholesale Distributors". Also, see "Acme".

Amplex

Amplex Instrument Labs.

Cockaday Improved ?? Super-Heterodyne Kit

September 1924

New York City

RN - September 1924 - P437 - Reference Only

"Build your set the Amplex 'Kit' way! Save Money, Time and Trouble. Cockaday Improved…Super-Heterodyne…". Another kit reference in PR, Feb '26, P187: "What's New...Apparatus Approved by Popular Radio".

Armstrong

Armstrong, Major Edwin Howard

Five Tube Super Auto-Dyne

May 16,1918

Armstrong

Resistance Coupled

Major Edwin Howard Armstrong, inventor

Paris, France

Super Het Disclosure Form [AEF] June 3, 1918 - P2 - [Note 24]

Sets made at 140 Boulevard Montparnesse in Paris from ideas gleaned in February 1918 (Note 4, P70-71). First Super Het demo'ed May 16, 1918. Used VT1s. RC IF network. Associated with Armstrong was Houck & Pressley. Story of Super-Het on page 198 in July 1924 RB Armstrong applied for French patent on his superheterodyne circuit on December 30, 1918. Applied for U.S. patent in February of 1919 (issued in June 8, 1920, #1,342,885). His U.S. patent was overturned by the U.S. District Court of Appeals of the District of Columbia in December of 1928. A Frenchman, Lucian Levy, was judged to have disclosed basic principals of the circuit in 1917. So why do so many consider Armstrong to be the inventor of the superheterodyne? Walter Shottky may have stated it best in 1926: "The "word" seems, at any rate, to have been far less important than the "deed," and there appears to be no doubt that it is Mr. Armstrong and his collaborators to whom we owe the deed, which has made the super-heterodyne method such an invaluable instrumentality in radio engineering." (Must reading is "Who Invented the Superheterodyne?" by Alan S. Douglas, The Legacies of Edwin Howard Armstrong, published by The Radio Club of America, 1990.).

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Six Tube Super Auto-Dyne

Summer 1918

" " " "

Resistance Coupled

" " " " " " "

" " " "

RN - Feb 1920 - P403 - Construction

RN - Feb 1920 - P404

Likely the third. Shown in PR, Nov '24 as constructed "during the summer 1918". RN Feb 1920 article has caption under pix: "One of the first…built in Armstrong's Paris laboratory." Vellum plans for 2 Supers dated 11/18 & 12/18 shown on "eros.com".

" " "

" " " " " " " " " "

Eight Tube Super Auto-Dyne

Summer 1918

" " " "

Resistance Coupled

" " " " " " "

" " " "

RN - May 1924 - P?? - Picture

Likely the second. Vellum plans for the first two Supers dated 11/18 & 12/18 shown on "eros.com". Pix with Houck & Armstrong in 1924 shows original 8 tuber. After Armstrong's death, artifacts with the greatest historical significance went to various museums. First Superhet went to Smithsonian. The second model superhet (likely the 6 tube set) from France went to the Signal Corps Museum at Fort Monmouth, the "honeymoon" suitcase portable second harmonic superhet went to the Ford Museum and prototypes of the RCA six tube second harmonic superhet went to the Smithsonian and AWA.

" " "

" " " " " " " " " "

Five Tube Super Heterodyne ???

1919

" " " "

" " " " " " "

Yonkers

Note 4: P91 & 92. Built with Houck after returning to the US in late??? 1919.

" " "

" " " " " " " " " "

Seven Tube Super Auto-Dyne

February 1920

" " " "

Resistance Coupled

" " " " " " "

New York City

RN - Feb & March 1920 - P403 & P?? - Construction

RN - February 1920 - P405

RN article by Harry Houck. Similar scheme in Radsco Catalogue # 11, early '24 directly below. Believed designed at Columbia U. Used honeycomb coils.

" " "

" " " " " " " " " "

Seven Tube Super Auto-Dyne

Summer 1920 ??

" " " "

Resistance Coupled

" " " " " " "

" " " " "

Radsco Catalogue # 11 - Figure 33 - Early 1924

Resistance-coupled. See directly above. Used honeycomb coils. This is a more complex schematic.

" " "

" " " " " " " " " "

Super Heterodyne Using Audio Transformers

Summer 1920 ??

" " " "

Resistance Coupled

" " " " " " "

" " " " "

PR - June 1923 - P468 / P469

Resistance-coupled. See directly above. Used honeycomb coils. This is a more complex schematic. Used audio transformers.

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Six Tube 2nd Harmonic Super Heterodyne

Fall 1921 ??

" " " "

Air

" " " " " " "

" " " " "

(R - May 1922?? - P ?? - Picture)

100 Radio Hookups - Dec. 1924 - P53

First second harmonic. 100 Radio Hookups - Dec. 1924 (Note 23) Besides actually building all of the pre-production models, Harry Houck's main contribution, to what would become the first RCA production superhet, would be his second harmonic invention. There were several inherent advantages to this scheme - reduction of one tube by combining the functions of oscillator and first detector; elimination of antenna radiation, and; reduced interaction between antenna and oscillator controls. Houck saved an additional tube by reflexing the first IF amplifier back through the RF amplifier. Drawing from Houck's second harmonic patent filed March 3,1923, #1,686,005, issued on October 2, 1928. Harry Houck would eventually receive at least $100,000.00 from Armstrong for his work on the superheterodyne. Just a few days before filing for his second harmonic patent, Houck assigned rights to Armstrong.

" " "

" " " " " " " " " "

Five Tube 2nd Harmonic Reflexed Super Heterodyne

February 1923

" " " "

" " " " " " "

" " " " "

RB - July 1924 - P ??? - Pictures

Another version of 2nd harmonic with only 5 tubes and built-in horn probably used to demonstrate to RCA's David Sarnoff and another for Owen Young.. Interior shows hap-hazzard construction. Article RB, July '24 says this set was used in Massachusetts by two women with no radio experience who received 2LO , London. This was on Dec.1, 1923 for the Trans-Atlantic tests sponsored by Radio Broadcast and Wireless World (London) magazines.

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Four Tube 2nd Harmonic Reflexed Super Heterodyne

February 1923

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" " " " " " "

" " " " "

Reference made to a four tube set in a letter to Armstrong from RCA Research Dept, March 10, 1923.

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Six Tube 2nd Harmonic Reflexed Super Heterodyne

Spring / Fall 1923

5 / 6

" " " "

Air

" " " " " " "

" " " " "

R - May 1922 ???- P ?? - Picture

Note 24 - Six Tube Schematic

Prototype for RCA second harmonic. Started as 5 tube set in Spring, but a 1st RF stage was added in Fall 1923 by RCA so the set would work better within steel buildings. See previous five tube version. Used UV 199s.

" " "

" " " " " " " " " "

Portable Six Tube Super Heterodyne

December 1923

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" " " " "

RDI - February 16, 1924 - Back - Picture

Shows Mr. & Mrs. Armstrong at Palm Beach, Florida, with HER new Super Het on their honeymoon. This is a 2nd harmonic set.

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Super-Regenerative-Heterodyne Combination

February 1924

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" " " " "

RDI - February 16, 1924 - P6 - Article

RDI - February 16, 1924 - P6

A combination of the Super Het & the Super Regen was invented by Armstrong and presented to the meeting of the Radio Club of America by George Eltz (See below) & E. H. Armstrong in Feb '24. "'It works', but not perfect yet!" See schematic which is exclusive of audio stages.

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" " " " " " " " " "

Eight Tube Transformer-Coupled Super Heterodyne

Summer 1924

" " " "

60 ??

" " " " " " "

" " " " "

RB - July 1924 - P?? - Pictures

E. H. Armstrong used to demonstrate Super Het circuit. IFs shielded.

Atlantic & Pacific Radio Co.

Improved and Practical Super-Heterodyne

PNF

January 1924

M / K

(201A)

NIF

(1)

NIF

(Atlantic & Pacific Radio Co.)

NIF

PNF

NIF

Chief Engineer & Staff

New York City

RN - May 1924 - P1684 - Manufactured / Complete

A complete description of this set was printed in "New York Evening Mail Radio Magazine" for Jan. 19, 1924. Ad says, "Rolls Royce of Radio". Sold as manufactured set in May 1924 (X) for $150 in "beautiful piano finish solid mahogany cabinet and unconditionally guaranteed for one year" and complete parts for $75. Then in June 1924 (X) they advertised only the complete kit/parts. Leutz/RCA law suit had an effect. Ads for just a couple of months. Regeneration here. Tuned plate circuit on first stage for better amplification. Was it a re-packaged (something of someone else) set?

Atwater Kent

(Atwater Kent Mfg. Co.)

(Eight Tube Superheterodyne)

(1924)

(Philadelphia)

[From Dale davenport:] Truth is, I've never been sure about the AK "Super." I've had it for years [2003] and it's currently in the attic of my shop, somewhere. It's stood on one end on a dirt floor and is in pretty sad shape. It's exactly like a model 20 ,but it's about three feet long. The front panel is like a model 20 in that the holes, knobs etc. that are model 20 ( or 10 ) and it has only two dials, set to the left side. he front panel is metal, same guage as a 20, has the spot welded little rail / shelf along it's length at the back, supporting the various pieces, all of which appear to be AK model 20 ( or 10 ). From memory, it has two large tuning dials to the left with a standard AK tap switch set between them at the bottom, a AK lozenge nameplate top center, two of the AK model 20 rheostat islands set to the right (mirror image to the tuning knobs to the left). I don't remember if it has two on / off switches or not but seem to remember that it does and one is "A" and the other "B" source. The little support rail looks like AK too but "I thought" it looked a little "cobbier" than a usual stamped one and that would make sense for a "one of" model I guess. Yes, it does have the milled corner "trim" buttons. Paint is too far gone to tell but seems to have been the standard AK "Crystalline" finish rather than wrinkle. Circuitry is made up of various AK 20 Bakelite tube islands, single, triple, etc. The tuning condensers are metal frame like those in a model 10 rather than the bakelite model 20 type. The AFs and IFs are what appear to be normal model 20 "can" types mounted in the usual way on the bakelite. Whole thing is eight tube (if I remember correctly.) Wiring and coils antenna coil are pretty much standard looking for a model 20. One coil seems to be a usual tapped antenna model and the other wound to be a coupler with a little AK knob (like on the tap switch). Where did it come from? Beats me, I got it in a trade years ago with a fellow in PA (interesting hunh?). He had picked it up at a local auction as I recall and thought it was a home brew. Prototype?? No other information available.

41 41

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Baby Grand

n / a

Six-Tube Baby Grand Super-Heterodyne

January 1925

6 - 199

7 x 18

[Haynes-Griffin]

Square

(100)

Iron

n / a

Paul Green

Chicago

RA - January 1925 - P15 - Lite Construction

RA - January 1925 - P16 - Layout

All parts are staggered - unusual. The author says this layout must be religiously adhered to or there will be no results. Two IF transformers and one audio. The IFs shown are unknown and article doesn't tell. They are black blocks with a label that has a circle-like logo. (There were three known companies that made black square IFs: Hayne-Griffin, Sangamo, and Abbott.) The output coil is home-wound on a bobber of 2 inch diameter with a 1 inch core. Pictured with enclosed Acme tuning capacitors. Interesting layout for a 6 tube design. Used 199s. Used a flashlight battery soldered in for grid bias. Claims it can be made for $55. Baseboard 10 inches deep. 7x18 inch panel.

" " " "

n / a

Improved Six-Tube Baby Grand Super-Heterodyne

March 1925

6 - 199

8 x 15.5

(Silver Marshall)

Misc

Iron

Specifically, Iron

Paul Green

Chicago

RA - March 1925 - P23 - Lite Construction

This layout is standard compared to the previous version. Two IF transformers and one audio, all of same make. IFs are unknown and article doesn't tell. No flashlight battery in this version. Used 199s. Attached bankwound loop is 19x19 inches. The IFs under the baseboard likely are Silver Marshall 8x15.5 inch panel.

Baby Heterodyne

n / a

Single Tube Baby Heterodyne

February 1924

John B. Rathbun

(San Francisco)

RA - February 1924 - P?? - Construction

Appears to be an oscillator/mixer stage only with feedback. Says to not use WD11s or WD12s. 201As and 199s are okay. Referenced in RA, Oct 1924: Letter to Editor [Have as JPG.]

" " " " " "

n / a

Baby Heterodyne With Two Audios

May 1924

John B. Rathbun

" " " " "

RA - May 1924 - P42 & 44

RA - May 1924 - P44

Oscillator/mixer stage with feedback and two audios. Two short articles about improvements.

" " " " " "

n / a

Baby Heterodyne With RF and Audio Stages

PNF

June 1924

5 - 201A or 199

(7 x 18)

4 or 2

Not Used

NIF

n / a

John B. Rathbun

" " " " "

RA - June 1924 - P21 - Lite Construction

RA - June 1924 - P21 - Scheme

Can be configured as a Four-dial Super. The detector Stage is the single tube heterodyne stage making it a Superhet, much like the Oscillator/Mixer stages from years later. With the use of untuned RF transformers such as "Acme, Ralsa, Erla, and others", the two additional 17 plate condensers can be eliminated with degradation of performance in selectivity and volume. This would give the appearance of a two-dial Super. This is a single oscillator/mixer stage with feedback and the addition of two RF stages and two AF stages. The first two RF stages utilized "any Neutrodyne coil" for the amplification factor of 8 to 1 per stage. Any iron core audio transformers were used if they were 5 to 1 ratio for the best results. Used a flashlight cell for 4.5 volt bias. Used a 50-turn honeycomb coil and variable condenser (size not giving in this construction article) for the feedback loop. "It goes without saying that all the tubes, detector tube (3) included, must be hard amplifying tubes, such as UV201A, C301A, and UV199 or C299. A soft tube like the UV200 will not work at the high plate voltages."

Baby Heterodyne II

n / a

Baby Heterodyne II

September 1924

John B. Rathbun

" " " " "

RA - September 1924 - P31 - Construction

RA - June 1924 - P32 & P33 - Layouts

Appears to be an improved oscillator stage only with feedback.

Baby Super Four

n / a

Four Tube Baby Super

July 11, 1925

4 [+ 1] *

J. E. Anderson

" " " " "

RW - July 11 & 18, 1925 - P?? - Construction

RW - January 2, 1926 - P13 - Scheme

This is a three-dial Super using three .0005 mfd variable caps, two being double condenser caps. The first stage is a regenerative, tuned RF. The first detector also is regenerative. No brand name given for the IFs shown as air core. Amperites in all filament circuits. Anderson was Technical Editor ?? of RWI in 1925 ?? Referenced in RW, Aug 1, 25, P11 and Aug 8, 25, P24: Letters to Editor [Have as JPG.] See "DX Super-Heterodyne" under RWI [November 21, 1925] below. It's the same radio with additional stages.

Baby Super Six

n / a

Six Tube Baby Super

July 11, 1925

6 [[+ 1] *

J. E. Anderson

" " " " "

RW - July 11 & 18, 1925 - P?? - Construction

RW - January 2, 1926 - P13 - Scheme

This is a three-dial Super using three .0005 mfd variable caps, two being double condenser caps. Six tube set has a fixed crystal for the first detector, making it equivalent to seven tubes. The first stage is a regenerative, tuned RF. The first detector also is regenerative. No brand name given for the IFs shown as air core. Amperites in all filament circuits. Anderson was Technical Editor ?? of RWI in 1925 ?? Referenced in RW, Aug 1, 25, P11 and Aug 8, 25, P24: Letters to Editor [Have as JPG.] See "DX Super-Heterodyne" under RWI [November 21, 1925] below. It's the same radio with additional stages.

Badger Radio

Super-Heterodyne Kits

December 1924

Milwaukee, Wis.

RDI - December 13, 1924 - P30 - Kit

"Dealers…Super-Heterodyne Kits…Complete Parts and Information…Send For Catalogue".

Baldwin

Nathaniel Baldwin Headphone Co.

Nine Tube Superheterodyne

1924

NIF

(7 x 24)

1 - V

NIF

(Baldwin)

NIF

PNF

NIF

Salt Lake City

(AWA OTB Picture & Caption)

Details in the caption under the picture, possibly from the AWA OTB, says "Ernie Hite's Nathaniel Baldwin Nine Tube Superheterodyne. It is a factory produced set, made by the Nathaniel Baldwin Headphone Company in 1924, in violation of the RCA patent on the superhet circuit." Fine tuning handles under each tuning knob. Very nice cosmetics. Nothing more is known. [2/2/07- Is it possible this set was made by the Baldwin Radio Electrical Mfg. Co. of 684 Bergen St., Brooklyn, NY as shown in RTD, Feb '25??]

Baldwin-Pacific

Baldwin-Pacific & Co.

Pacific "S-H" Transformers # 5 & #10

April 1924

n / a

Baldwin-Pacific

Short Cylindrical

(Iron)

(Air)

(Gerald M. Best ??)

San Francisco

R - April 1924 - P87 - Short Kit

Note round label on top of round case. I believe the case is shielded as there is a reference to a shielded case in the article for the "Baldwin Pacific - Best" radio. The #5 transformer is the IF [three required] and the #10 is the Filter transformer [one required]. Black nickel trim finish. "…hook-up print packed with each transformer." Radio, May & June 1924, ads says "A complete knock-down SUPER SET ready soon." [Knockdowns were illegal by RCA injunction.] Manufacturer associated with "Radio" magazine (Pacific Publications) in San Francisco. Is Baldwin the same as Nathanial Baldwin? Very possible. It's also possible Gerald M. Best created this for Baldwin-Pacific Company just before he went to Remler. In 1926, it's reported he endorsed the circuit. See Remler. Addressed at 441 Pacific Building, San Fran.

" " " " "

" " " " " " "

Pacific Ranger "Pacific Quintet" Super-Het Kit

November 1924

n / a

Baldwin-Pacific

Short Cylindrical

(Iron)

(Air)

(Gerald M. Best ??)

" " " " "

RN - November 1924 - Kit

Kit: One Pacific "Ranger" # 30 Oscillator Coupler, three Pacific "Ranger" # 25 Intermediate Frequency Transformers, and one Pacific # 20 "Ranger" Filter Transformer. $15. Also called the "Pacific Quintet" due to the five parts in the kit. I believe the case is shielded as there is a reference to a shielded case in the article for the "Baldwin Pacific - Best" radio. By Aug '24, the label on top of the IF can was rectangular. Known as "Pacific Ranger" and also as the "Pacific Quintet". 45KC IFs . See CRCB, Fall '24, P144. Bill Dial, Denver, says: "The schematic shows the 8 tube Armstrong circuit (1918 patent) using General Electric UV199 tubes. Later called "The 'New Marvel' 45,000 Cycle Kit" in R - May 1925 -P80. Barawik: Fall '25, P17, $11.95. Called "Pacific Rainbow" in PR, Feb '26, P187 said "Apparatus Approved…". Believe this set was advertised in Spring 1926 Barawik catalogue, page 22. Advertised "Noise Filter" #15 in R, May 24, which looked like the other transformers. Called a "knockdown" in RTD, Aug '25.

" " " " "

" " " " " " "

Pacific Ranger "Pacific Quintet" Super-Het

November 1924

8 - 199

6 x 26 to 30

1 - V

Baldwin-Pacific

Short Cylindrical

(Iron)

(Air)

(Gerald M. Best ??)

" " " " "

CRCB - Fall 1924 - Complete Kit

Kit: One Pacific "Ranger" # 30 Oscillator Coupler, three Pacific "Ranger" # 25 Intermediate Frequency Transformers, and one Pacific # 20 "Ranger" Filter Transformer. $15. I believe the case is shielded as there is a reference to a shielded case in the article for the "Baldwin Pacific - Best" radio. By Aug '24, the label on top of the IF can was rectangular. Known as "Pacific Ranger" and also as the "Pacific Quintet". 45KC IFs . See CRCB, Fall '24, P144. Bill Dial, Denver, says: "The schematic shows the 8 tube Armstrong circuit (1918 patent) using General Electric UV199 tubes. Later called "The 'New Marvel' 45,000 Cycle Kit" in R - May 1925 -P80. Barawik: Fall '25, P17, $11.95. Called "Pacific Rainbow" in PR, Feb '26, P187 said "Apparatus Approved…". Believe this set was advertised in Spring 1926 Barawik catalogue, page 22. Advertised "Noise Filter" #15 in R, May 24, which looked like the other transformers. Called a "knockdown" in RTD, Aug '25.

" " " " "

" " " " " " "

Pacific Ranger Super-Het

Spring 1926

7 - 199 & 1 - 201A

(6 x 26)

n/a

Baldwin-Pacific

Short Cylindrical

(Iron)

(Air)

(Gerald M. Best ??)

" " " " "

Barawik Catalog - Summer1926 - Complete Kit

" " " " "

" " " " " " "

Pacific Rainbow Super Het

February 1926

PR - February 1926 - P187 - Kit Reference

Pacific Rainbow in PR, Feb '26, P187: Referenced in "What’s New...Apparatus Approved by Popular Radio".

Baldwin-Pacific - Best

n / a

Best Modified Superheterodyne Shielded Model

(Fall 1925)

7 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

Three-dial Super. See Note 21. "All Wave". Used UV199s.Completely brass shielded. Could have General Radio 271, Jefferson 150, Silver Marshall 60 KC, Baldwin-Pacific Shielded IFs. Remler NOT mentioned! I believe the case is shielded as there is a reference to a shielded case in the article for the "Baldwin Pacific - Best" radio. But, Best mentioned in the article that the IF should be between 40 and 50 KC, which, at 45 KC, would be perfect for the Remler IFs. Maybe didn't want to create conflict of interest. Sub-panel is 16 gauge brass and is 7x16. Brass shields were used to sepaarate various sections of the radio inside the case. Adapted to a long wire outdoor antenna. A hand-wound "loading coil" was used to compensate for various lengths of antenna wire starting at 75 feet.

Baldwin Pacific - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Baldwin-Pacific

Short Cylindrical

NIF

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Baldwin Pacific - Hall

n / a

Compact Super-Heterodyne

April 1925

Baldwin-Pacific

Short Cylindrical

NIF

D. J. Hall

RN - April 1925 - P1880 - Construction

RN - April 1925 - P1881

The pictures in the article are copyrighted by Baldwin Pacific. Article shows three different portables using the same schematic. Called a "knockdown" in RTD, Aug '25. (Knockdowns were outlawed by the RCA decision in 1924-Ed.) See Baldwin Pacific.

Band-Isolator

June 1929

7 x 24

S. Gordon Taylor

New York City

RN - July 1929 - P1105

RN - June 1929 - P1107 - ??

Original preview article in RN, June 29 - Page 1105. 7x24 inch panel.

Barawik Co.

High Grade Eight Super-Heterodyne

July 1924

Columbia ??

Chicago

RN - July 1924 - P143 - Complete / Parts / Blue Prints

Part supplier.

Bongart

n / a

Four Tube Super-Heterodyne

July 1924

B. J. Bongart

New York City

RWI - July 26, 1924 - P?? - Construction

RWI - July 26, 1924 - P??

See RWI "Four Tube Super" below. Might be the same.

" " "

" "

Four Tube Super-Heterodyne

September 12, 1925

" " " " "

RWI - September 12 1925 - P19 - Scheme & Parts

This is a reflexed Super using a crystal detector ahead of the audios. Home-wound coils with factory audio used in the reflexing. This might be the B. J. Bongart Four Tube Super of July 1924 above.

Boone

Boone Corporation, J. T.

Super Heterodyne Transformer Kit

August 1924

n / a

Boone

Cylindrical

Air

John T. Boone

Detroit

RDI - September 20, 1924 - P13 - Kit / Book

Boone Sales Booklet - 1924 - No Construction Info

Have brochure. Had "1-short wave RF Transformer, 1-Oscillator Coil, 1-Filter Coil or Input transformer which is fully balanced with the three Long Wave RF Transformers, 1-Audio Frequency Transformer, Complete Wiring Diagrams and Instructions accompanying each kit, and carefully followed, satisfactory results are guaranteed. Price $50....". Sixty-four page technical book was called "The Super Heterodyne". IF peaks at 36 KC, [WOW] 8666 meters. Filter transformer has primary bridged with a .0005 MFD fixed mica capacitor. The cylindrical portion of the transformer sase is of "impregnated dark red fibre" and the terminals are of "brushed brass finished with gold instrument lacquer". Top and bottom of case are Radion (bakelite) except the audio case has only the top of black Radion.. Also lists the Boone 3' & 2' Loop antenna. Says will bring in coast to coast on a 3 foot loop. The Oscillator Coil is unique in design as it's a long, thin cylindrical piece. This company also made their own audio transformers.Kit price was $50. Addressed at 3460 East Jefferson Street.

" "

" " " " " " " "

Eight Tube Super Heterodyne

August 1924

7 - 201A

(7 x 36)

1 -V & 1 - MA

Boone

Cylindrical

Air

John T. Boone

" " "

RDI - September 20, 1924 - P13 - Kit / Book

Boone Sales Booklet - 1924 - No Construction Info

Have brochure. First ad shown Radio, August 1924 - P46. From ad in RDI, Sept 20, '24 (P13) has 9 (!) filament controls across the panel with two meters. Has "1-short wave RF Transformer, 1-Oscillator Coil, 1-Filter Coil or Input transformer which is fully balanced with the three Long Wave RF Transformers, 1-Audio Frequency Transformer. IF peaks at 36 KC, [WOW] 8666 meters. Also lists the Boone 3' & 2' Loop antenna. Says will bring in coast to coast on a 3 foot loop. Addressed at 3460 East Jefferson Street. No panel size given, but likely 7x36 inch; huge!

" "

" " " " " " " "

Seven Tube Super Heterodyne

February 1926

199

7 x 18

Boone

Cylindrical

(36)

Air

John T. Boone

" " "

Another kit reference in PR, Feb '26, P187: Referenced in "What’s New...Apparatus Approved by Popular Radio". Likely this radio is the same as Allen Jochum's. From Allen Jochem of Quincy, IL, email 2/02: "It is a chassis only. Used 8 uv199's about the size of the Apex Microdyne. [X] The set does not have a name on it, but is otherwise engraved." Note the different shape at the bottom and rounded top of these transformer cans now of all metal construction. In the middle of the set are two large spiderweb coils, maybe for the oscillator circuit. Engraved, but no name 7x18 inch panel.

Branston

Branston, Chas. A.

Branston Transformer Kit No.R-99

March 1924

n / a

Branston

Cylindrical

(Iron)

Air

Buffalo, N. Y.

PR - March 1924 - P60 - Kit

QST - December 1924 - P9 - Transformer "R-91" only

RB - Mar 1924 for ad announcing Super kit: "R-90 Oscillator Coupler, R-91 IFs, R-92 Special Transfer Coupler for last stage of IFs, and R-93 Specially Designed Coupler for using antenna." Oscillator Coupler is bank wound. Transformer "R-91" peaks at 5300 meters according to QST, Dec 1924 (X). Ad in RN, June 1924, said the R-92 Special Transfer Coupler could go before or after the IFs. Also, Ad in RDI, March 22, '24, P27. PR (& RB) April '24 P24 (& Back Pages) shows IF & coils nicely. RB - March 1925 - P958 - Complete / Kit. Address: 811 or 817 or 837 or 841 Main Street, listed in various ads over the year it was advertised.

" " "

" " " " " "

Branston R-95 Super-Heterodyne Knockdown ^

PNF

(March) 1924 ^

7 - 199

(8 x 24)

(1 - V optional)

L or W

Branston

Cylindrical

(Iron)

Air

" " " "

This is a Knockdown ^. Refernced in the RCA set book [later, McMahan Directory]. "Knockdown" still listed in RTD, Aug '25. Knockdown kits were made illegal with the RCA court decision of late 1924. They could not be offered, but assuming Branston had it out in March of 1924 before the decision. No other info available.

" " "

" " " " " "

Branston R-99 Super-Heterodyne

March 1924

7 - 199

(8 x 24)

(1 - V optional)

L or W

Branston

Cylindrical

(Iron)

Air

" " " "

RJ - March 1924 - P145 - Kit

Good ads in PR, June '24, P65. and RN - August '24, P?? RN - May '24 - P1618 shows "R-90 Oscillation Coil", "R-91 IF", "R-92 Transfer Coupler for Last Stage IF", & "R-93 Special Coupler for Using Antenna". Ad tells of book: "Super Heterodyne Construction" for a dolllar. "Knockdown" still listed in RTD, Aug '25. See Ultradyne - Branston below.

" " "

" " " " " "

Branston Transformer Kit No. R-199

November 1924

n / a

7 - 199

n / a

Branston

Misc

(57)

Iron

Air

" " " "

CRCB - Fall 1924 - P39 - Kit / Parts

Branston R-199 Brochure (1924)

Branston brochure (undated) says it is a Reflexed Super. "...reduced the number of tubes to seven UV199's or UV201A and to diminish the size of the required panel to 7" X 21 inches". "Works like ten." The kit offered is: 3 IF matched transformers in one unit [R-200], one IF tuned transformer [R-201] for first or last stage next to the IF unit, one Shortwave unit [R-202], one Special Tuned RF Coupler unit, I believe, for reflexing [R-203], one double unit Audio Transformers [R-204]. There is a stand alone single IF transformer [R-205], also. The IFs are of laminated silicone steel. The cases are designed to keep the leads short. These are the same basic shaped IF transformers as used in the Como Super-Het, but have different side connectors! (Comos are actually General Radio 271 IFs.) Good ad in RB Nov '24, P16 & RN Nov '24. Sears catalogue shows the kit at $29.95 in 1925. Set shown in PR, March '25, P118 (partially assembled & called the "Accessory Kit") and also in American Radio catalogue April 1925. RN for Dec '24 (P1101) lists "Kit". RB Dec '24, P323 shows good parts layout. RB - Jan '24 - P592 Shows front panel. Two vertical rheostats shown. Brand still shown in Barawik cat. for early 1926. 7x21 inch panel.

" " "

" " " " " "

Branston R-199 Reflexed Super-Heterodyne

November 1924

7 - 199 or 201A

7 x 21

Branston

Misc

(57)

Iron

Air

" " " "

RN - November 1924 - Kit / Parts

CRCB - Spring 1925 (Vol 6 #1) - P58 - Lite Construction

CRCB - Spring 1925 - P60 - Layout Only

Pictures from Australia. RN, April '25, P2000, says Kit Number R-199 [$35] has the coils and Kit R-199A [$50] has all the other parts to complete the entire radio. I believe CRCB, Spring 1925 (Vol 6 #1) P98 shows the schematic for this set. "...reduced the number of tubes to seven UV199's or UV201A and to diminish the size of the required panel to 7" X 21 inches". The kit offered is: 3 IF matched transformers in one unit [R-200], one IF tuned transformer [R-201] for first or last stage next to the IF unit, one Shortwave unit [R-202], one Special Tuned RF Coupler unit, I believe, for reflexing [R-203], one double unit Audio Transformers [R-204]. There is a stand alone single IF transformer [R-205], also. The IFs are of laminated silicone steel. The cases are designed to keep the leads short. These are the same shaped IF transformers as used in the Como Super-Het! Good ad in RB Nov '24, P16. Sears catalogue shows the kit at $29.95 in 1925. Set shown in PR, March '25, P118 (partially assembled & called the "Accessory Kit") and also in American Radio catalogue April 1925. RN for Dec '24 (P1101) lists "Kit". RB Dec '24, P323 shows good parts layout. RB - Jan '24 - P592 Shows front panel. Two vertical rheostats shown. Brand still shown in Barawik cat. for early 1926. Kit reference in PR - Feb '26 - P 187 - "Apparatus Approved…"

" " "

" " " " " "

Branston R-199 Non-Reflexed Super-Heterodyne

PNF

November 1924

7 - 199 or 201A

7 x 21

Branston

Misc

(57)

Iron

Air

" " " "

RN - November 1924 - Kit / Parts

Ads say several different Super Heterodynes can be made from the R199 kit. Likely one would be a non-reflexed set. No other info available.

Branston - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Branston

Cylindrical

(Iron)

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Branston - Ultradyne

n / a

Branston R-99 Ultradyne

March 1924

7 - 201A

7 x 30

(1 - V optional)

L or W

Branston

Cylindrical

(Iron)

Air

" " " "

RJ - March 1924 - P145 - Kit

This kit was designed to be used with the Ultradyne circuit. Good ads in PR, June '24, P65. and RN - August '24, P?? RN - May '24 - P1618 shows "R-90 Oscillation Coil", "R-91 IF", "R-92 Transfer Coupler for Last Stage IF", & "R-93 Special Coupler for Using Antenna". Ad tells of book: "Super Heterodyne Construction" for a dolllar. See Branston.

Braxton-King

Mississippi Valley Radio Company

Standard Air-core and Hi-Mu Coils ??

Fall 1925

n / a

Mississippi Valley Radio Company

St. Louis

"The Radio Dealer Year Book" - See Note 27

Company advertised standard air-core and Hi-Mu coils in Fall 1925. See Note 27. Address: 914 Pine Street.

" " " "

" " " " " " " " " " " "

(Screen Grid Superheterodyne)

1927

" " " " " "

" " "

Reference to company's first screen grid set CRCB - Sept '29 - P139.

" " " "

" " " " " " " " " " " "

Braxton-King Shielded, Plug-In IFs

December 1927

n / a

" " " " " "

Cylindrical

Air

" " "

RWI - December 3, 1927 - P30

Cylinder is 2 1/2 inches high and 1 1/2 inches wide. "Plugs into any UX socket. Sharply peaked and laboratory-matched in sets. No filter necessary. Set of four, $18.00".

" " " "

" " " " " " " " " " " "

Braxton-King Shield Grid Eight

November 1928

" " " " " "

" " "

CRCB - November 1928 - P169 - Complete / Kit

tunable IFs. Set of four $25.

" " " "

" " " " " " " " " " " "

Braxton-King Shield Grid Eight Conversion

March 1929

Screen Grid

(8 x 24)

2 - Drum

" " " " " "

" " "

CRCB - March 1929 - Custom Build Conversions

Individual Tunable IFs. "One spot reception." "No oscillation." Set of four $25. These were used during the rebuilding of a customers present Superhet, converting it to the B-K SG Super.

" " " "

" " " " " " " " " " " "

Screen Grid A. C. Superheterodyne

September 1929

" " " " " "

" " "

CRCB - September 1929 - P139 - Completely Wired

Ad explains "$135 Completely Wired". I believe they have a Custom-Builder put it together. Push-Pull 245s Power Supply $55.

" " " "

" " " " " " " " " " " "

Braxton-King Model A

November 1929

" " " " " "

" " "

CRCB - November 1929 - P45 - Complete

CRCB - November 1929 - P65

CRCB - November 1929 - P66

Receiver This is the last Braxton-King in the decade: The Improved Braxton-King Model C-5 Tuner with 5 Screen Grid tubes and 5 Tunable IF Transformers was offered Nov. 1930 per CRCB (Vol. 11, No. 4) for Nov. 1930.

" " " "

" " " " " " " " " " " "

Braxton-King Model B Tuner Unit

November 1929

5 [Tuner]

" " " " " "

" " "

CRCB - November 1929 - P45 - Complete

CRCB - November 1929 - P65

CRCB - November 1929 - P66

RF tuner only

Bremer Tully

Bremer Tully Mfg. Co.

B-T Oscillator Coupler

June 1924

n / a

Bremer Tulley

n/a

n / a

Chicago

RN - June 1924 - P1858 - Coupler Only

Ad says "Transformers for Super-Heterodyne ready July 1st." Address: Cahal & Harrison Streets.

" " " "

" " " " " " " "

B-T Super-Heterodyne Transformer Kit

July 1, 1924

NIF

Bremer Tulley

NIF

PNF

NIF

" " "

RN - June 1924 - P1858 - Reference to Transformers

June 1924 RN ad says "Transformers for Super-Heterodyne ready July 1st." Likely with the numerous law suits RCA was bringing about at that time, B-T decided to not introduce their kit. No other information has been found.

37 78

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Brunswick

Brunswick Balke Collender Co. & Radio Corporation Of America

Beaux Art Radio / Phono Combination ^^

PNF

October 1924 ^^

NIF

PNF

NIF

Chicago & Camden, N. J.

(No further information)

" " "

" " " " " " " " " " " " " "

Tudor Model 160 [Radiola / Phono Combination] ^^

October 1924 ^^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Brunswick Brochure - Manufactured

Rider - Brunswick P1-1 & 1-2 - Catacomb & Wiring

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^. Radio/Phono combo ^. $550.00 ^^. Left hand radio panel.

" " "

" " " " " " " " " " " " " "

Hudson Model BR-260 [Radio / Phono Combination] ^^

October 1924 ^^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^. Radio/Phono combo ^. $600.00 ^^. Radio in a drawer

" " "

" " " " " " " " " " " " " "

Empire Model 360 [Radio / Phono Combination] ^^

October 1924 ^^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Ladies Home Journal - April 1925 - Ad

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^. Radio/Phono combo ^. $650.00 ^^. Radio in a drawer

" " "

" " " " " " " " " " " " " "

Model 60 [Radio / Phono Combination] ^

1925 ^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Brunswick Brochure - Manufactured

Rider - Brunswick P1-1 & 1-2 - Catacomb & Wiring

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^. Radio/Phono combo ^. Left hand radio panel.

" " "

" " " " " " " " " " " " " "

Model 460 [Radio / Phono Combination] ^

1925 ^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^. Radio/Phono combo ^.

" " "

" " " " " " " " " " " " " "

Panatrope Model PR-148-C [Radiola / Phono Combination]

1926 ^

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Brunswick Catalogue - Dated for 1927 Models - Manufactured

Rider - Brunswick P1-1 & 1-2 - Catacomb & Wiring

Reflexed Super Het^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio. Radio/Phono combo. Combos "from $250 to $2250"

" " "

" " " " " " " " " " " " " "

Panatrope Model PR-148-C [Radiola / Phono Combination]

1926 ^

7 [+ 1]

(199 & 171)

Radiola 28 Seven Tube Panel

2 - Drum

1 - Optional

Internal Loop

R.C.A.

7 Tube Catacomb

Air

n / a

Edwin H. Armstrong

" " " " " " " "

Brunswick Catalogue - Dated for 1927 Models - Manufactured

RCA Radiola 28 used a flat panel. No untuned, 1 tuned, 2 IFs, 2 Audio ^. Panatrope catalogue, 1927, $1275. Combos "from $250 to $2250"

" " "

" " " " " " " " " " " " " "

Cordova 8 - 2D [Dry Battery] [Radiola / Phono Combination] ^

November 1926

7 [+ 1]

(199 & 171)

Radiola 28 Seven Tube Panel

2 - Drum

1 - Optional

Internal Loop

R.C.A.

7 Tube Catacomb

Air

n / a

Edwin H. Armstrong

" " " " " " " "

Rider - Brunswick P1-7 - Wiring

RCA Radiola 28 used a flat panel. No untuned, 1 tuned, 2 IFs, 2 Audio ^ ??. Radio/Phono combo ^.

" " "

" " " " " " " " " " " " " "

Cordova 6 [Radiola / Phono Combination] ^

January 1927

6 - 199

Model 813 Six Tube Panel

1 - Optional

Internal Loop

R.C.A.

6 Tube Reflexed Catacomb

Air

n / a

Edwin H. Armstrong & Harry Houck

" " " " " " " "

Rider - Brunswick P1-5 - Wiring

Reflexed Super Het ^. Used 6 tube Superheterodyne with "UV Catacomb". No untuned, 1 tuned, 3 IFs, 2 Audio ^ ??. Radio/Phono combo ^.

" " "

" " " " " " " " " " " " " "

Cordova 8 [Radiola / Phono Combination] ^

January 1927

(199 & 171)

Eight Tube Panel

2 - Drum

1 - Optional

Internal Loop

R.C.A.

8 Tube Catacomb

Air

n / a

Edwin H. Armstrong

" " " " " " " "

Rider - Brunswick P1-6 - Wiring

RCA Radiola 28 used a flat panel. No untuned, 1 tuned, 2 IFs, 2 Audio ^ ??. Radio/Phono combo.

" " "

" " " " " " " " " " " " " "

Model BR 18

January 1927

7 [+ 1]

(199 & 171)

Radiola 28 Seven Tube Panel

2 - Drum

1 - Optional

Internal Loop

R.C.A.

7 Tube Catacomb

Air

n / a

Edwin H. Armstrong

" " " " " " " "

Riders wiring harness diagram. Looks like Radiola 28.

" " "

" " " " " " " " " " " " " "

Panatrope Model PR-138-C [Radiola / Phono Combination]

December 1927

7 [+ 1]

(199 & 171)

Radiola 28 Seven Tube Panel

2 - Drum

1 - Optional

Internal Loop

R.C.A.

7 Tube Catacomb

Air

n / a

Edwin H. Armstrong

" " " " " " " "

Radio Broadcast - December 1927 - P?? - Manufactured

RCA Radiola 28 used a flat panel. No untuned, 1 tuned, 2 IFs, 2 Audio ^. Radio - Phonograph combo ^. Exclusively used RCA Radiola chassis after 1926 ^. (Note 12:) An agreement produced Super-Het phono panels for several Brunswick and RCA combinations. Brunswick cat: $1150

" " "

" " " " " " " " " " " " " "

Model 3NC8 [A-C] Highboy ^

October 1928

8 [+ 1 A-C]

Y227, 171, 280

Walnut

1 - Drum

n / a

Short Indoor

R.C.A.

Under Chassis Rectangle

180 KC

(Air)

n / a

" " " " " " " "

Rider - Brunswick P3-2 - Chassis & Trimmers

One untuned coupling stage, 1 stage of tuned RF, 1 tuned detector stage, 2 IF stages, second [power] detector, and 1 audio stage. Used one UX280 full-wave tube in the power supply. High-Boy cabinet ^. $700.00 ^.

" " "

" " " " " " " " " " " " " "

Model 5NO [A-C] Table Model

October 1928

8 [+ 1 A-C]

Y227, 171, 280

Walnut

1 - Drum

n / a

Short Indoor

R.C.A.

Under Chassis Rectangle

180 KC

(Air)

n / a

" " " " " " " "

Rider - Brunswick P3-2 & 1-15 - Chassis & Scheme

Same as RCAs Model 60. One untuned coupling stage, 1 stage of tuned RF, 1 tuned detector stage, 2 IF stages, second [power] detector, and 1 audio stage. Used one UX280 full-wave tube in the power supply. Table model ^. $175.00 ^.

" " "

" " " " " " " " " " " " " "

Model 5WO [A-C] Table Model

8 [+ 1 A-C]

Y227, 171, 280

Walnut

1 - Drum

n / a

Short Indoor

R.C.A.

Under Chassis Rectangle

180 KC

(Air)

n / a

" " " " " " " "

Looks the same as Brunswick 5NO and RCAs Model 60. Assume it has one untuned coupling stage, 1 stage of tuned RF, 1 tuned detector stage, 2 IF stages, second [power] detector, and 1 audio stage. Used one UX280 full-wave tube in the power supply. Table model. No further info found.

" " "

" " " " " " " " " " " " " "

Model 5NC8 [A-C] Highboy

October 1928

8 [+ 1 A-C]

Y227, 171, 280

Walnut

1 - Drum

n / a

Short Indoor

R.C.A.

Under Chassis Rectangle

180 KC

(Air)

n / a

" " " " " " " "

Rider - Brunswick P3-2 & 1-15 - Chassis & Scheme

" " "

" " " " " " " " " " " " " "

Model 148 [Radio / Phono Combination] ^

1928 ^

8 ^

(199, 171)

(Eight Tube Panel)

2 - Drum

1 - Optional

Internal Loop

R.C.A.

(8 Tube Catacomb)

(60)

Air

n / a

Edwin H. Armstrong

" " " " " " " "

No untuned, 1 tuned, 2 IFs, 2 Audio ^. Battery-operated Radio/Phono combo ^. $995.00 ^.

" " "

" " " " " " " " " " " " " "

Model 3NW8 [A-C] Highboy

January 1929

8 [+ 2 A-C]

Y227, 250, 281

Walnut

1 - Drum

n / a

Short Indoor

R.C.A.

Under Chassis Rectangle

180 KC

(Air)

n / a

" " " " " " " "

Rider - Brunswick P3-2 & 1-15 - Chassis & Scheme

One untuned coupling stage, 1 stage of tuned RF, 1 tuned detector stage, 2 IF stages, second [power] detector, and 1 audio stage. Used two UX281 half-wave tubes in the power supply. High-Boy cabinet ^. $595.00 ^.

Bryant

n / a

Homebuilder's Seven - A Super Set

April 1929

201A, 171 for DC or 227, 222, 171 for AC

7 x 24

2 - Drum

Homemade

Upright Coils

214

Air

n / a

B. B. Bryant

NIF

RN - April 1929 - P924 - Construction

RN - April 1929 - P928 - Scheme, Layout & Parts

Article also shows how to apply AC to the circuit.

Brinkman

n / a

Three Level Super-Heterodyne

May 1924

Henry Brinkman

Pelham, N. Y.

RA - May 1924 - P26 & P36 - Pictures / Captions

Unique multi-level set. Two stages of RF, three stages of IF, and Push-Pull audio. Also shows Mrs. Brinkman & huge commercial antenna. See St. James 1927 "Upright 8". Looks like a copy.

Brunn

n / a

A Choice Superheterodyne

January 1927

Brunsten Brunn

(RW - January 8, 1927 - P?? - ??)

Brush

n / a

Six Tube Het-Duo-Gen

December 1924

C. E. Brush

Chicago

RDI - December 28, 1924 - P?? - Construction

RDI - December 28, 1924 - P??

Layout in RDI, Jan. 3, '25, P20. 7x26 inch panel.

BSM

NIF

BSM Super 8

(1926)

NIF

PNF

NIF

This set was up for auction opn eBay in a group of other radios, several from the mid-20s. Nothing else is know at this time [1/5/07].

Buell

Buell Manufacturing Company

Flewelling Uniformer

May 1924

n / a

Buell

Module

NIF

(Air)

Edmond T. Flewelling

Chicago

CRCB - Fall 1924 - Parts

Flewelling Uniformers were designed of polished hard rubber with terminals protruding from the top. The Uniformer block has recessed areas on the top so the Flewelling tube socket can be attached to two terminals on one block and the other two terminals on another to build a compact arrangement of IFs and sockets. Ad says a six-tube set can be as small as 19 inches and 3 1/2 inches deep. Located on 2975-77 Cottage Grove Avenue, Chicago.

Buell - Flewelling Eight

" " " " " " " " " "

Flewelling 8

January 28,1928

201A, 171

(7 x 24)

Buell

Module

NIF

(Air)

Edmond T. Flewelling

Chicago

New York Sun - Radio Section January 28, 1928 - Front Cover - Lite Construction

New York Sun - Radio Section January 28, 1928 - Front Cover Scheme, Layout, & Parts

"By the use of a novel capacity strip the assembly of this Super is simplified and the operating characteristics are improved." Four Flewelling IFs, One Flewelling TRF transformer, and two Flewelling audios. Special capacitive strip used under the sub-panel which connects tube sockets and other components to a common point. Special hookup: Second detector grid condenser mounted across primary of first audio transformer. Trademark on top of each transformer. Used seven 201As and a 171A in the final audio stage. The four Flewelling IFs run across back of subpanel. Also see Buell for Flewelling.

26 104

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Camfield

Camfield Radio Manufacturing Company

Super Selective Nine

March 1927

9 [5 ******]

201A, 200A, & 112

7 x 30

S & L W

Rusco No. 95 IFs & Rusco Band Pass Filter

Vertical Tuna Can / Module

Air

Chicago

CRCB - September 1927 - P195 - Kit / Parts

RLG - September 1927 - P81 - Construction

RLG - September 1927 - P84 - Scheme

This is a three-dial set! Also CRCB Sept '27. Switchable 5 tube, two dial TRF to 9 tube Super Het. Two "Rusco" IFs &one Band Pass Filter. Used Silver-Marshall 220 audiotransformers. Used two Camfield single variable condenser and one two-ganged variable condenser. Had six CECO 201As, two CECO 200A detector tubes, and one 112 Power tube. Had three Camfield "Duo-Formers". Camfield advertised non-Super parts in RN, Nov '25, P733. Full page ad in S. Hammer Radio Co. [P10]. [First complete radio, non-Super "Duodyne" in Radio, Feb '26.] CRCB for March 1927 for more construction, layout, wiring diagram, & scheme. In November 1927, American Auto & Radio advertised complete set with tubes and cabinet for $140.75. The complete kit was $74.82. 7x30 inch panel.

" " "

" " " " " " " " " " " " "

Super Selective Ten

November 1927

10 [6******]

Rusco No. 95 IFs & Rusco Band Pass Filter

Vertical Tuna Can / Module

Air

" " "

CRCB - November 1927 - P245 - Complete / Kit

CRCB - November 1927 - P157 - Construction

CRCB - November 1927 - P157

****** - This is a three-dial set! Switchable from 6 tube TRF to 10 tube Super Het. Used Tyrman IFs & parts.

" " "

" " " " " " " " " " " " "

Super Selective Nine 'Revised'

January 1928

[9 [5 ******])

S & L W

Rusco No. 95 IFs & Rusco Band Pass Filter

Vertical Tuna Can / Module

Air

" " "

[Note 9]

(This is a three-dial set!)

Carborundum Company

Carborundum Superheterodyne

January 1927

8 [+ 1] *

Madison or Victoreen Suggested

Tuna Can

150

Dr. M. L. Hartmann & John R. Meagher, developers***

Niagara Falls, N. Y.

RN - January 1927 - P824 - Construction

RN - January 1927 - P824 - Layout

Three-dial set *. Used one Carborundum detector in place of the second detector tube. Three tuning dials, 150 K. C. IFs, & generally just unorthodox! Used one stage of neutralized, tuned radio frequency, a regenerative vacuum tube first detector, three IFs at 2000 meters [150 KC], one Carborundum second detector, and two audio stages. Used either Madison Radio Corp. or Victoreen IFs. Madison IFs shown [Not Madison Moore]. Hartmann was Research Director for the Carborundum Co and Meagher was their Radio Research Engineer.

CELCO

Central Engineering Laboratories

Celco Double "D" Coil IFs

August 1925

n / a

Central Engineering Laboratories

Tuna Can

66 ??

Air

Chicago

PR - October 1925 - Parts

Good ad in RTD, Aug '25. This is quite some honey with "Double Ds"!!

Columbia

Columbia Radio Corporation

New Columbia IFs, Oscillator Coupler, and Audios

Fall 1924

n / a

Columbia

Misc

"Semi-iron"

None

Chicago

Chicago Salvage Catalogue - Fall 1924 - Kit

Chicago Salvage ad of Fall 1924 shows IF and Audio and says: Peaks at 7800 meters [38 KC] with voltage "amplification factor of 37 at its peak". Highest of any on the market. "A complete set of these Transformers consisting of an Oscillator Coupler ($3.50 list), four Long Wave Transformers ($5.00 each), an antenna coupler, and two Columbia Audio Frequency Transformers will be delivered to you in a kit ready to build your Super-Heterodyne for a net price of $36.25." "No filter is required for this Transformer." Used in Randolph sets. Ad in CRCB, Fall 1924, P196, Parts. Also see Ultradyne L-1 (Columbia) below. Address 155 N. Union St. in RTD, FEb '25.

" " "

" " " " " " " " " "

Semi-Finished 8-Tube Super-Heterodyne

August 1925

8 - 201A

7 x 30

TL or W

Columbia

Misc

"Semi-iron"

None

" " "

Randolph ad in Fall of 1926 shows $39.50. Same ad shows letter dated August 19, 1925. Used 201As only. "...not furnish for dry cells..." Optional antenna coupler for outside antenna increased complete kit to $42.50. Baseboard was 10 inches deep. 7x30 inch panel.

" " "

" " " " " " " " " "

Semi-Finished 8-Tube Super-Heterodyne Deluxe

August 1925

8 - 201A

7 x 30

Columbia

Misc

"Semi-iron"

None

" " "

Columbia Catalogue - Fall 1925 - P14 - Complete

Not sure what makes this a DELUXE. Columbia catalogue, Fall 1925: "Stock Number 1320. List Price $75.00. Your Price $35.50." PR, Oct '25. Randolph, Fall '25, P23, ad shows "Columbia IFs" and said it operated at 45 KC. Same ad shows letter dated August 19, 1925. Columbia Radio Catalogue - Fall 1925 - P14 - Complete. Loop and cabinet not included with set. 7x30 inch panel (10 inch deep cabinet).

" " "

" " " " " " " " " "

(Improved 9-Tube Super Deluxe)

1928

201A & 112 or 171 or 250

7 x 30

TL or W

Columbia

Misc

"Semi-iron"

None

" " "

Hamilton Carr Catalogue - 1928 - Complete

The additional antenna coupler here for long wire or loop makes this the Deluxe model. List $90. HC price $36.40. Benjamin UX tube sockets.Used 112 or 171 in Push-Pull audio. Also could use 120 power tubes. Used Knight K200 and P-P audio transformers. Complete with mahogany cabinet $39.90. Drilled 7x30 inch panel.

Columbia - Hamilton Carr

" " " " " " " " " "

Semi-Finished 8-Tube Super-Heterodyne

(Fall 1926)

9 - 201A

7 x 30

TL or W

Columbia

Misc

"Semi-iron"

None

" " "

H-C Catalogue - Late Summer 1926 - P??

"Our Own Special Offer". Semi-Finshed. Loop antenna version only. $33.60. In mahogany cabinet $37.95. Long-wire antenna version for $35.95 sans cabinet. Optional long-wire antenna coupler for $3.00. See Columbia Semi-Finshed 8-Tube above. Baseboard was 10 inches deep. 7x30 inch panel.

" " " " " " " "

" " " " " " " " " "

Improved 9 Tube Super

September 1927

201A & 112 or 171 or 250

7 x 30

TL or W

Columbia

Misc

"Semi-iron"

None

" " "

H-C Catalogue - Late Summer 1927 - P63

"Our Own Special Offer…Thousands of Users Testify to this Wonder Kit". Used NEW Knight K2000 audio and Knight Push-Pull for use with UX112, or UX171, or UX210 tubes. Has Camfield 620 Oscillator Coil. Loop antenna version for $34.50. Long-wire antenna version for $36.40. Either version in a mahogany cabinet for $39.90 7x30 inch panel.

Columbia - Randolph

" " " " " " " " " "

Semi-Finished 8-Tube Super-Heterodyne

October 1924

8 - 201A or 199

7 x 30

Columbia

Misc

"Semi-iron"

None

" " "

PR - Randolph Radio Ad - October 1925 - P25 - Complete

Ads make it seem this is a Randolph Superhet by omission of the Columbia name except in the fine print of the parts. Used either Columbia (shown in picture) or Remler IFs. Randolph was a parts clearing house selling cheap kits. $59.75 ^ RN - October 1924 - P509 - Complete. 7x30 inch panel.

" " " " " " "

" " " " " " " " " "

Super-Heterodyne

December 1924

Columbia

Misc

"Semi-iron"

None

" " "

RN - December 1924 - P955 - Complete

Used either Remler or Columbia (as shown in picture) IFs. Randolph was a parts clearing house selling cheap kits. $59.75. 7x30 inch panel.

" " " " " " "

" " " " " " " " " "

Semi-Finished 8-Tube Super-Heterodyne Deluxe

August 1925

8 - 201A

7 x 30

Columbia

Misc

"Semi-iron"

None

" " "

Randolph Radio Catalogue - Fall 1925 - P23 - Complete

Ads make it seem this is a Randolph Superhet by omission of the Columbia name except in the fine print of the parts. PR, Oct '25. Randolph, Fall '25, P23, ad shows "Columbia IFs". 7x30 inch panel (10 inch deep cabinet).

Columbia - Ultradyne

Columbia Radio Corporationm

Ultradyne L-1 Super-Het

Fall 1925

8 - 201A

7 x 30

Columbia

Misc

"Semi-iron"

None

" " "

Columbia Radio Corp Catalongue - 1926 - P22 - Complete Kit

This is a Lacault Ultradyne L-1 with Columbia IFs and Columbia or Thordarson audios. RF and Oscillator coils are the original Phenix Ultradyne coils. "Stock number 4054 List Price Value, $80.00. Your Price $37.50." Original L-1 still listed in Randolph (somehow associated with Columbia), Fall '25, P23: Complete $45.85. See Ultradyne L-1 below. 7x30 inch panel.

Como

Como Apparatus Corporation

Six-Tube Super-Heterodyne

June 1924

6 - 199 or 201A

Breadboarded No panel

NIF

Como / General Radio

Misc / Module

Iron

Air

Boston / Manchester, NH

RB - June 1924 -Back Pages - Complete / IFs

RRET, July '25, P64: "This is a 6 tube receiver priced at $87.50. Used lots of General Radio parts. No audio is provided; intended for "headphones only". In Summer of '24 Como in Boston. As of July 1925 in RR, Como is in Manchester, N. H. Used 199s or 201As. Has 2 detectors, 1 oscillator, 3 stages of RF amplification. The Filter is a Como 30 KC in a black rectangular, boxy unit with two terminals high on each end.. IFs are General Radio 271, tuned to 30 KC. Also see General Radio Transformer # 271. Ad has complete list of parts. Address 446 Fremont St., Boston in RTD, Feb '25. In Radio Retailing, July 1925, it was located on Kelly Street, Manchester. It's 16.25x8x4 inches with 199 tubes.

" " "

" " " " " " " " " "

Nine-Tube Super-Heterodyne

June 1924

6 - 199 or 201A

Breadboarded No panel

(2)

NIF

Como / General Radio

Misc / Module

Iron

Air

" " " " " "

PR - July 1924 - P14 [ads] Complete / Construction Info

RRET, July '25, P61: "...designed for either VU-199 tubes or UV-201A tubes. Push-Pull is used in the second stage of audio...Pictorial diagrams are furnished, instead of the usual blueprints, supplemented by five photographs of the complete set. The panel has all of the hole drilled ready for mounting. Intended retail prices are, in order, $125 and $130." No untuned, no tuned, 3 IFs, 3 Audio ^. $125.00 ^. "10,000 meters" (30 K.C.) - "'30" Tuned Transformer" as shown in RB - Sept 1924 - P5 - Parts. As shown in PR, June '24, P56, the Filter is a Como 30 KC in a black rectangular, boxy unit with two terminals high on each end. The IFs are General Radio 271. Also see General Radio Transformer # 271, July 1924. $125 (199 version) or $130 (201A version). Push-Pull audio amplification. "Knockdown" still listed in RTD, Aug '25. In Summer of '24 Como in Boston at 446 Fremont St.. As of July 1925 in RR, Como is in Manchester, N. H., located on Kelly Street. The dimensions for the nine tuber with 199s are 24x8x4 inches. With 201A tubes it's 26.5x9.25x4.75 inches.

Consomello

Mazda Radio Manufacturing Co.

Consomello

Fall 1925

8 - 201A

(7 x 24)

(1 -V)

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

Cleveland

CRCB - Fall 1925 - P196 - Manufactured

See St. James. 3408 Perkins Ave. $160 CRCB Summer 1926: $130. Probably 7x24 inch panel. According to AWA article [Ohio's Radio Industry in the 1920s] by D. K. Owens on page25, Mazda's last year was 1926. No reason why indicated.

" " " "

" " " " " " " " " " "

Grand

Fall 1925

" " "

CRCB - Fall 1925 - P196 - Manufactured

This set is in DOUBT ??? Might have changed this model to Super Het in mid-1925. RN? Jan 1925 shows non-Super. See St. James. Differs from set above with built-in speaker and "space for both A and B batteries". $250. CRCB Summer 1926: $225. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Portable ^)

1926 ^

" " "

See Note 25. $225 ^ Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

Special

Summer 1926

" " "

CRCB - Summer 1926 - P??? - Manufactured

See St. James. CRCB Summer 1926: $160. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Consomello ^)

1926 ^

8 ^

8 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. $175 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Deluxe ^)

1926 ^

8 ^

8 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. A console ^. $235 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Grand ^)

1926 ^

10 ^

10 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. A console ^.Likely AC with 10 tubes. $500 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Portable ^)

1926 ^

" " "

See Note 25. $225 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Premier ^)

1926 ^

8 ^

8 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. $175 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Royal ^)

1926 ^

8 ^

8 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. A console ^. $285 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

" " " "

" " " " " " " " " " "

(Special ^)

1926 ^

10 ^

10 - 201A

(7 x 24)

NIF

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

See St. James. See Note 25. Likely AC with 10 tubes. $275 ^ Probably introduced Fall 1926. Probably 7x24 inch panel.

Consrad

Consrad Company

Genuine Standard Super-Heterodyne

November 1924

(8)

(201A)

(8 x 40)

1 -V & 1 - MA

NIF

F. F. Webb

New York City

RN-Nov1924-ConsradCompany-Ad-Patterns Only

Webb [Note 6] - Ad - Scheme

Pattern No. 14. Contains two extra large blueprints 19.5 by 44 inches and a 16-page instruction book. RadioConstructor-100 Radio Hookups-FFWebb-3rdPrint-Dec1924. RN, Dec 1924, P1108, Blue Prints. Addressed at 233 Fulton.

" " "

" " " " " "

Consrad Strobodyne

January 1928

11 x 27

(Radio Electric Laboratory)

120 ??

Lucien Chretien [translated by R. E. Lacault]

" " " " "

RN - January 1928 - P808

Ad's for new 16-page book about construction of the Strobodyne. 11x27 inch panel!

Daven Super Amplifier

Daven Radio Corporation

Daven Super Amplifier

July 1925

201A

n / a

Daven

Module / Separate Parts

n / a

Resistance Coupled

n / a

Newark, NJ

PR - July 1925 - Part

The Daven Super Amplifier is an entire bakelite unit with three tube sockets and associated resistances used as the IF stages of a Superhet. The Type 3-K was a kit without tube sockets. Both used Daven Type MU-20 tubes. RN - March 1926 - P1373. See Popular Mechanics magazine below and the "Eight Tube Resistance Coupled 1927 Super".

Dean - Receptrad

Charles A. Dean

Eight Tube Superheterodyne [SH8-1]

(1924)

8 - 201A

7 x 40

Radio Receptor

Cylindrical

100

"Comunited Iron"

Air

Lieut. Victor Greiff

Charles A. Dean

New York City

Custom-built by Charles A. Dean of Binghamton, New York, likely for his personal use and not to resell. This set has what appears to be an long wire antenna coupler behind the front panel near the center. This might explain the knife switch at the far left interior and the front panel markings that say, "Loop or Variocoupler Secondary" with arrows pointing to external binding posts at the top and bottom of the front panel. The Barry-Receptrad has this same arrangement with binding posts. The Dean appears also to have a jack between the the two binding post for a connection to a two-wire loop antenna. The standard volt meter and the milliamp meter were not included on this Receptrad. The three headphone jacks are above the filament controls like on the Barry-Receptrad, which seems standard. Front panel is three inches shorter than the standard early Receptrad at 39.5 inches. 8x36 inch engraved panel! See Receptrad below.

DeLand

DeLand Radio Manufacturing Company

Famous One Spot R. F. Transformer

November 1927

n / a

DeLand

Standing Rectangle

NIF

(Air)

NIF

Milwaukee, Wis.

CRCB - November 1927 - P223 - Parts

One Spot IF transformer only. Address: 780 - 29thStreet.

Domino

Domino Radio Service

Super- Heterodyne Kits

May 1924

New York City

RN - May 1924 - P1699 - Kit

"$55 Super Heterodyne kits with free assembly books. Only $49.50."

Du Bois

William L. Du Bois

8-Tube Super-Heterodyne

November 1924

NIF

PNF

NIF

Philadelphia

TR - November 22, 1924 - P14 - Complete Parts or Built

"Complete set of parts $45.00. Wire it yourself or we will build it for you $15.00 extra. All parts guaranteed first quality. 4529 Baltimore Avenue. Day and night Service."

" " "

" " " " " "

Monarch 4-Tube Super-Het

February 1925

(CB)

NIF

PNF

NIF

" " " "

TR - February 7, 1925 - P14 - Complete

"Best money can buy at a price within the reach of all. Noted for distance, selectivity and ease of tuning. No outside aerial required. $125."

Duplex

Duplex Engine Governor Co., Inc.

RK Supplimentary Kit

September 1924

Brooklyn, N. Y.

QST - January 1925 - P? - Kit

"RK Supplemental Kit" also shown in RB - Sept 1924 - P455ish -Ad. Supplimental kit has tube sockets, variable caps, rheostats, etc.

" "

" " " " " " " " " " "

Super-Het

January 1925

Duplex Engineering

" " " " "

PR - January 1925 - P68 - Kit

DX Seven

n / a

DX Seven Super Heterodyne

(7 x 21)

1 -V & 1 - MA

Radio Receivers & How To Make Them

"DX7 Super Het" from "Radio Receivers & How To Make Them"

34 138

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Eastern Coil

Eastern Coil Corporation

Eastern Pickle Bottle Coupler Model FC

January 1925

n / a

Eight-sided Tuning Coil

n / a

A. O' Connor

New York City

RB - July 1925 - P3152 - Parts

RB - June / August 1925*

This company at 22 Warren in NYC built self-supporting coils for various circuits, like Roberts, DX Superdyne, Browning-Drake, and typical TRFs. The Model "FC" was designed for specific use in the O'Connor "Frequency Changer" that, when set up with a five tube TRF or Neutrodyne, turns the radio into a superheterodyne. Other radios can be used, also. Model "FC" retailed at $6.00. See Radio Broadcast June & August 1925 for "Frequency-Changer" articles by A. O'Connor! See "O' Connor" below.

Eclipse

NIF

Eclipse Superheterodyne

March 1927

Radio mechanics - March 1927 - ???

Eight-In-Line

Boulderadio

Eight-In-Line

September 1927

8 - 201A

7 x 24

Eight-In-Line

Wooden Module

Air

Boulder, CO

American Radio Catalogue #117 September 1927 - P51 - Eight Tube Unit

CRCB - September 1927 - P98 - Construction

CRCB - November 1927 - P84 - Complete Scheme

"Takes the 'IF' out of putting the set together" (PUNNY) Eight tube module [18 lbs] & a six tube unit [New 11/27]. The pre-assembled module was a wooden structure that covered the guts of the radio, leaving only the tubes and their sockets shown. Used DeJur parts as recommended. "The Gradergood Co., 1435 Welton St., Denver" is sales representative with a store, "Radio Stores Inc" next door at 1433 Welton. Ads said the company guaranteed if the unit "went sour" they'd replace [seemingly forever] if the unit hadn't taken apart or abused. RN, Jan '27, P788, article & scheme [no internal values give]. A complete 8 tube schematic is shown on page 84 of the Nov 1927 S. Hammer Radio Co. offered completely wired version in Corbett cabinet for $156 in Sept '27. CRCB, Sept. '27, P172 & 173, two page ad. American Radio, Sept '27, offered the unit for $63.00 [retail $105.00] and the complete kit without cabinet, batteries, and tubes for $75.84 [retail $ 126.00] .

" " " "

Six Tube Unit of the Eight-In-Line

November 1927

6 - 201A

7 x 24

Eight-In-Line

Wooden Module

Air

" " " "

CRCB - November 1927 - P53 - Six Tube Unit

CRCB - November 1927 - P82 - Hookups

CRCB - November 1927 - P84 - Complete Scheme

See Eight-In-Line above. Add two or three stages of power audio to this Unit to make it a complete 8-9 tube superhet. The pre-assembled module was a wooden structure that covered the guts of the radio, leaving only the tubes and their sockets showing. A complete 8 tube schematic is shown on page 84 of the Nov 1927 CRCB. The same magazine article shows several examples of audio amps which can be added to the "Six-In-Line".

E. I. S. / Leutz

Experimenter's Information Service, Inc.

Armstrong Super-Heterodyne

July 1922

8 ??

R-C

99 ?

Resistance Coupled

Charles R. Leutz

Long Island, NY

WA - July 1922 - P5 - Manufactured

Have early ad scanned. Not Het. R-April1922.

" " " "

" " " " " " " " " " " " "

(Model L Resistance Coupled]

1922

M / K

R-C / L-C

Resistance or Inductance Coupled

" " " "

" " " " "

John Wolkonowicz told me of this one. Believed to be shown in 1922 QST. Two 40" cabinets make up the "L". Typically, "Amplifier Half" on top of the "Receiver Half", but best possible position is side by side. IFs were resistance-coupled. RCA UV1712s audios used. 8x40 (8 deep) inch panel. See Note 19. Located at 220 West 42nd Street, NYC.

" " " "

" " " " " " " " " " " " "

Model L [Transformer Coupled]

October 1922

M / K

RCA UV-1714

Misc

Iron ??

" " " "

" " " " "

RWI - Oct 7, 1922 - P3, 4, & 5 - Lite Construction

RWI, Oct 7, 1922, P3: "Superheterodyne As Applied To Armstrong's Superregenerative Circuit" Two 40" cabinets make up the "L". Typically, "Amplifier Half" on top of the "Receiver Half", but best possible position is side by side. IFs work at 30 KC (RCA UV1714s). Reportedly only 4 or 5 known to exist. "When repairing this set, NO soldering acid must be used. All soldering must be done with a flux of alcohol and rosin." 8x40 (8 deep) inch panel. See Note 19. Located at 220 West 42nd Street, NYC.

" " " "

" " " " " " " " " " " " "

Model L [Transformer Coupled]

October 1922

M / K

RCA UV-1714

Misc

Iron ??

" " " "

" " " " "

RN - January 1923 - P1393

RWI - Oct 7, 1922 - P3, 4, & 5 - Lite Construction

RWI - Oct 7, 1922 - P3

" " " "

" " " " " " " " " " " " "

Model C

April 1923

M / K

2 or 3

RCA UV-1716 / General Radio / Acme Open Frame / E. I. S.

Misc or Tuna Can

43 / 50 / 47

Iron or Air

" " " "

" " " " "

RN - July 1923 - P?

Blue prints offered to the public April '23. Radio News, July 1923, first "C" ad. The "C" was in the marketplace nearly a year before RCA introduced their Super-Het. Note 20: "...uses eight tubes. Depending upon the sockets and filament rheostats, the tubes can be Type UV199 or Type UV201. It is designed for loop antenna, but an external adapter unit was available for outside antennas. The Model J 2-stage RF amplifier was also available. References: Antenna Adapter "K" and the 2-stage regenerative RF amp "J". The Model C has 4 rheostats and one 'stabilizer' potentiometer. The audio stages are biased with a 4 1/2 v. C battery inside the cabinet." Early IF transformers were General Electric (RCA) Model 1716s until RCA stopped shipments to EIS in March 1924. Acme Open Frame & General Radio IFs were used until EIS Model C "Radio Frequency" transformers were available. These Model "C" IFs are broadly tuned to peak at 47 KC [6389 meters], whereas, previous maker IFs were 30 KC (10,000 meters). EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Also sold through Norden, Hauck & Co., Philadelphia, which advertised RN, Aug '24, P252: "Wired" / Complete / Kit / Parts.

" " " "

" " " " " " " " " " " " "

Model C-7 Standard

September 1924

E. I. S.

Tuna Can

Air

" " " "

" " " " "

RN - September 1924 - P402 - Complete

RN - January 1927 - P842 -Scheme

RN info in Jan '27, P842, says Norden Hauck provided all the data for the schematic. Says RCA UV1716 IFs would be a good substitute for EIS coils. Early versions did not have removable fixtures for the antenna inductances & oscillator couplers. Most didn't have engraving on front panel that said "Superheterodyne" & may have been only those shipped early. 1st tube is Oscillator, 2nd is 1st detector, 3rd is RF amp, 4th is second RF amp, 5th is 2nd detector, 6th is first audio, & 7th is last audio. All UV201A tubes. "New Model C-7". "The Rolls-Royce of Reception". Note 20: "...uses 7 tubes & no loop. Inputs are provided for long & short antennas. One less IF stage than Model C. Has only 2 rheostats, one marked 'Master' & one for the 2nd IF marked 'Volume'. No 'Stabilizer' control. Uses 2 C batteries - 9 v. for the 1st detector & 4.5 volts for audio - also located inside cabinet." "...used 2 tuning caps by General Radio & the osc cap was marked 'Heterodyne' & antenna tuner was marked 'Wave Length'...Sockets by General Radio, audios were General Radio Type 231A or GE Model UV712 & meters were Jewell or Weston. Western Electric made bypass caps & filament switch." Three jacks - one for each audio stage. Two different styles of IF train (see pix). IFs are broadly tuned to peak at 47 KC [6389 meters]. EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Assume C-7 is same. Model C-7 is a First Harmonic. "...Experimenter's Information Service C-7 design...". No untuned, no tuned, 2 IFs, 2 Audio ^. "Improved Regenerative". RB - Dec '24 ad references "C", "K", and "J" models. 8x40 (7.75 deep) inch Formica panel. Still promoted under Norden Hauck, Inc. in "What's New" PR - July 1926.

" " " "

" " " " " " " " " " " " "

Model C-7 Improved

October 1924

" " "

Tuna Can

Air

" " " "

" " " " "

RB - October 1924 - P540ish - Parts / Kit / Complete

Most did not have engraving on the front panel that said the word "Superheterodyne". The 1st tube is the Oscillator, 2nd is first detector, 3rd is RF amp, 4th is second RF amp, 5th is second detector, 6th is first audio, and 7th is last audio. All UV201A tubes. Note 20: "Model C-7 Improved had copper shielding on the interior without the customary voltmeter and ammeter at a reduced price. Three sets of plug-in coils were available covering 20-600 meters." "...used two tuning capacitors made by General Radio and the oscillator capacitor was marked 'Heterodyne' and the antenna tuner was marked 'Wave Length'...Tube sockets were made by General Radio, audio transformers were General Radio Type 231A or GE Model UV712. Western Electric made the bypass capacitors and filament switch." General Radio IFs were used until EIS Model C "Radio Frequency" transformers were available. Had three jacks - one for each audio stage. Another good ad in PR, Nov '24 on P51 promotes complete set. IFs are broadly tuned to peak at 47 KC [6389 meters]. EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Assume C-7 is same. 8x40 (7.75 deep) inch Formica panel. Still promoted under Norden Hauck, Inc. in "What's New" PR - July 1926.

" " " "

" " " " " " " " " " " " "

Model C-7 Deluxe

(Note 20)

" " "

Tuna Can

Air

" " " "

" " " " "

The 1st tube is the Oscillator, 2nd is first detector, 3rd is RF amp, 4th is second RF amp, 5th is second detector, 6th is first audio, and 7th is last audio. All UV201A tubes. Note 20: "Deluxe Model C-7 had all the connecting terminals on the rear instead of the front panel and came without meters. It had only one 'Master' rheostat and only one audio output jack. The others had three jacks -- one for each audio stage." "...used two tuning capacitors made by General Radio and the oscillator capacitor was marked 'Heterodyne' and the antenna tuner was marked 'Wave Length'...Tube sockets were made by General Radio, audio transformers were General Radio Type 231A or GE Model UV712. Western Electric made the bypass capacitors and filament switch." IFs are broadly tuned to peak at 47 KC [6389 meters]. EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Assume C-7 is same. 8x40 (7 3/4 deep) inch Formica panel.

" " " "

" " " " " " " " " " " " "

Model C-7 Special

" " "

Tuna Can

Air

" " " "

" " " " "

Ron Lawrence reference to a set he has - 060304.

" " " "

" " " " " " " " " " " " "

(C-3 Custom Super-Heterodyne)

(1925)

" " "

Tuna Can

Air

" " " "

" " " " "

Three-Dials. John Wolkonowicz told me of this one. Model not verified but likely. It's a model C-7 inside and a Model C-10 outside. See these notes: Panel is 40". Leutz says the C-10 is, "…a C-7 Model...with (three) stages of TRF…". Note 20: "Model C-10 is similar to the C-7, but has three tuned RF stages ahead of the first detector for a total of 10 tubes and five tuning capacitors. The RF tuning is ganged so there are only three tuning dials. This model was designed for the Navy with plug-in coils covering 50-600 meters." IFs are broadly tuned to peak at 47 KC [6389 meters]. EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Assume C-7 is same.

" " " "

" " " " " " " " " " " " "

Navy Model C-10 Super-Heterodyne

February 1925

" " "

Tuna Can

Air

" " " "

" " " " "

PR - May 1925 - P55 - Complete

Leutz [Note 7] - P131

Leutz (Note 7) - P132

Three-dials. "…this new design by Charles R. Leutz...". RB June 1925 P298 ad by Norden-Hauck. First 3 stages are TRF, a regen detector, then, Osc., 2 stages of IF, 2nd detector, and 2 stages of AF. Leutz says, "…a C-7 Model...with stages of TRF…". Note 20: "Model C-10 is similar to the C-7, but has three tuned RF stages ahead of the first detector for a total of 10 tubes and five tuning capacitors. The RF tuning is ganged so there are only three tuning dials. This model was designed for the Navy with plug-in coils covering 50-600 meters." Scheme also in RN, Dec '25, P821. IF frequency is 6389 meters [47 KC]. No untuned, 3 tuned, 2 IFs, 2 Audio ^. Complete: $250.00 ^. Sold by and changed to Norden-Hauck, Inc. in PR June '25 ad. IFs are broadly tuned to peak at 47 KC [6389 meters]. EIS Model C IF transformer has "3 meter selectivity at 300 meters" (1000 KC) according to RN, June '24 ad. Assume C-7 is same. Panel size is 28 3/16" x 8". Still promoted under Norden Hauck, Inc. in "What's New" PR - July 1926.

" " " "

" " " " " " " " " " " " "

Universal Transoceanic Type L- 6

September 1926

M / K

" " " "

" " " " "

Used as a Frequency Changer front end for Leutz's TransOceanic Type L-6. Picture sent from Dale Davenport

E. I. S. - Colburn

n / a

Colburn Superheterodyne

Email from Dale - Maybe 2005 - "I Have also received a whole grouping of pictures of the Colburn Super that seem to indicate it's mostly E.I.S. internally."

Electrical Research ^

Electrical Research and Mfg. Co. ^

Super Heterodyne ^

1924 ^

(No other information available.)

Ellis

n / a

"Using What Junk You Have In Making a Super-Heterodyne"

December 1923

" " " " "

" " " "

RB - December 1923 - P143 - Construction

RB - December 1923 - P144 & 145

Use parts from your previous projects to build a Super.

" "

Ellis Electrical Laboratory

Ellis D Coil

November 1927

Chicago

CRCB - November 1927 - P236 - Parts

Oscillator coil used in the Thompson Super Seven. Ad says "R. F. Coils Matched Set".

Ensall

Ensall Radio Laboratory

Model 780 Super Heterodyne

September 1929

Warren, Ohio

(CRCB) - September 1929 - P126 - Kits

Model 770 is described as a seven tube TRF design and the model 780 as a eight tube "Super." Both used A / C Shield Grid tubes, and P-P audio. 1208 Grandview Avenue. Info from Dale.

ERLA

Electrical Research Laboratories

Town and Country ^ Model S14

1925 ^

ERLA

Misc

Chicago

eBay Pictures

eBay pix. Used 199s. Portable with loop antenna. Three IFs. Probably NOT reflexed. Might be an "Acre" portable case.

20 158

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Feldstern-McCusker Radio

American Radio Stores, Inc.

Five Tube Baby Super-Het

November 1924

Philadelphia

TR - November 22, 1924 - Back Cover - Manufactured

"Coast to Coast Low-Loss Set. Ease and simplicity of tuning make it the ideal receiver for all the family. A exquisite instrument encased in a beautifully finished Genuine DeLuxe Mahogany Cabinet that will adorn any home. Guaranteed to bring in distant stations. $59.75 Equal to any $150.00 set."

Flewelling Frequency Changer

n/a

Flewelling Frequency Changer

September 1925

2 - 201A

(7 x 10)

n / a

Edmond T. Flewelling

Chicago

Radio In The Home - September 1925 - P?? - Construction

Radio In The Home - September 1925 - P?? - Scheme

Flewelling was "the inventor of the Flewelling Superregeneration Circuit of the early broadcasting days". [Wonder what Armstrong had to say about that!] Radio In The Home issue describes how to build the Freq. Changer with all the coil winding info and schematic.

Flewelling 8

(Flewelling Radio Company)

Flewelling 8

January 28, 1928

7 - 201A & 1 - 171A

(7 x 24)

Flewelling

NIF

Edmond T. Flewelling

Chicago

N.Y. Sun Newspaper - January 28, 1928 - Light Construction

N.Y. Sun Newspaper - January 28, 1928 - Light Scheme

Flewelling was "the inventor of the Flewelling Superregeneration Circuit of the early broadcasting days". [Wonder what Armstrong had to say about that!] Used an interesting "capacity strip" to hook most wires to under the sub-panel. Leaves only about six inches of external wiring. The sub-panel, supplied by Flewelling in the kit, is already drilled with tube sockets already mounted on it. It's drilled for all transformer terminals. Flewelling name is the top of each IF transformer and "these trade marks should all read right side up from the front panel." If not, the transformer must be reversed. Used four Flewelling Long Wave transformers, one Flewelling T.R.F. transformer, and two Flewelling audio transformers. Used the center lead and one outside lead of a tapped loop.

Fournier

n / a

Fournier Four Filter Eight Tube Super-Heterodyne

March 1925

Jacques Fournier

Chicago

RDI - March 7 & 14, 1925 - P17 - Construction

RDI - March 7 & 14, 1925 - P18

This is a three-dial set! "A filter circuit is nothing more than a stage of tuned RF designed for a long wave length and permanently tuned for that wave length….It occurred to the writer (Fournier) that the intermediate stages of a super-heterodyne might just as well be designed as tuned RF amplifiers operating in the neighborhood of 5000 meters." Used 201As or 199s. 7x30 inch panel.

Framingham

Framingham Company, The

Framingham K. D. Super Heterodyne

PNF

(1924)

Framingham

Tall Cylindrical

Air

Farmington, Mass.

Dale Davenport Brochures - (1924) - Kit

I have several copies of these Dale sent. From Dale Davenport: "I am probably the only person at this point who has much of anything on the Framingham Superhet. Charles Fisher, Historian, collector of Western Electric and other radio gear, lives in Framingham and didn't know of the existence of this set till I contacted him. Kit was called the "Farmingham Super Combination.Only Framingham kit and loop to turn up thus far. Unbuilt with several factory prints and drawings, parts lists, and even a dealer's price list. I have one master schematic, 11x24"; Five smaller schematics, 6x12"; Three pictorial hook up prints, w/t legend, 8.5x15.75"; Two four page (three printed) Instruction books, 8.5x5.5"; One Audio Frequency Transformer sheet, 6x9", One 50 Kc RF Transformer sheet, 3.75x 6"; One IF Transformer sheet, 3.75x6"; One Oscillator Coil Sheet, 3.75x6", One Dealer's Price List - Four pages, 8.5x11" White in color; Four Dealer's Price sheet, pale green with dealer discount on back, sized 8.5x11". About 20 pcs of paper came with the kit." $100 complete with Farmingham branded parts.

Frank

Everlast Radio Products Co.

Frank Super-Kit

November 1, 1924

Frank

Cylindrical

New York City

RWI - November 1, 1924 - P33 - Complete

Kit contained 3-Frank Matched IFs, 1-Input Tuner, and 1-Input Transformer. Used 2-triple panel mounted sockets and 2 individual sockets. Should have a Jewel 0-8 volt meter in the panel. Cabinet came in black or mahogany finish. Complete all parts kit (knockdown) $85. Located at 27 Park Place. RN - December 1924 - P1103 - Kit. Perfection Radio Corporation (78 Cortlandt Street, NYC) were the stores in NYC that promoted the "Famous" Frank Super-Kit; may have been associated. Provided demonstrations. See ad in RWI, Nov 8, '24, P34. "Send no money at all...Just fill in the coupon and then pay the express man when he delivers it.Try it in your home for two weeks." Drilled and engraved (likely Formica) 7x26 panel.

Foltz

Foltz Radio Company

New Five Tube Wonder Circuit

August 1923

New Castle, Penna.

RB - August 1923 - P? - Complete

Foy

n / a

Seven Tube Super-Heterodyne On Wheels

August 1924

(Unknown)

"Barney" Foy

Washington, D. C.

RN - August 1924 - P160 - Article

Barney Foy , developer, constructed Super-Het for the Raquet Club in Washington, D. C.

Frederick

Tustin Radio

Frederick Super-Heterodyne

PNF

May 4, 1924

K & P

NIF

(Frederick)

NIF

(Frederick)

San Francisco

PBPW - May 4, 1924 - Back Cover - Kit & Parts

Back cover ad for this set. Nothing else known. Tustin Radio at 428 Sutter St.

G. A. Sales, The

Super Heterodyne

May 1924

St. Paul, Minn.

RN - May 1924 - P1684 - Blue Prints

Small RN ad.

General, The

General Radio Repair Co.

"The General" Super-Heterodyne

January 1925

7 - 199

(7 x 28)

Silver Marshall

Aluminum Square

Steel

McMurdo Silver

Chicago

Everybody's Radio Weekly [ERW] January 31, 1925 - P20 - Ad

This was the Silver Marshall Laboratory Model. It had aluminum blocks shown RB June '25. Kit (shown in PR June '25) includes 2 "Two-Ten"s (IFs) which peak at 5000 meters (same IFs used in the 401 Unit), 1 "Two-Eleven" (Filter), and 1 "101B"(Coupling Unit) with instructions. Used 199s. Had 1.5 volt flashlight battery for tube bias while SM used a 4.5 volt bias battery. See Silver Marshall. General Radio Repair, 36 West Randolph, Chicago. Picture of the set in the ad is inverted possibly to hide the fact it's a SM radio. Panel appears to be 7x28, rather thn 7x24.

" " " " "

" " " " " " " "

Medium Frequency Transformer - Type 271

July 1924

n / a

General Radio

Misc

Iron

Air

" " " " " "

RB - July 1924 - P273 - IFs

QST - December 1924 - P9 - Transformer "Type 271" only

Transformer peaks at 9000 meters ("around 10000 meters".) IFs and Filter unit used brass shells for isolation of the windings. Excellent ad in PR, Oct '24, P67. See E. I. S. for usage.

" " " " "

" " " " " " " "

30 Kilocycle Superheterodyne [1st Model]

Fall 1925

General Radio

Misc

Iron

Air

" " " " " "

CRCB - Fall 1925 - P72 - Parts

CRCB - Fall 1925 - P73 - Construction

CRCB - Fall 1925 - P74

Used three "Type 271 " IFs & one "Type 331 - 30 KC Tuned Transformer". No parts list.

" " " " "

" " " " " " " "

30 Kilocycle Superheterodyne [2nd Model]

Fall 1925

General Radio

Misc

Iron

Air

" " " " " "

CRCB - Fall 1925 - P72 - Parts

CRCB - Fall 1925 - P130

Completely different than above. Used two "Type 271 " Ifs, one "Type 331 - 30 KC Tuned" xfmr, & 4 rheostats. No parts list.

General Radio

General Radio Company

Six Tube Super Heterodyne

April 1924

General Radio

Misc

Iron

Air

Cambridge, Mass.

(QST - April 1924 - P?? - Construction)

General Radio IFs are iron core with a tuned air core filter transformer. In Spring 1926 (Barawik Catalog P28), this same case was used by Thorola for their "Gold and Black" audio transformer with connectors on the sides. A similar Branston case had the connectors front and back, not on the sides.

General Radio - Anderson

n / a

DX Super-Heterodyne

November 1925

8 *

General Radio

Misc

Iron

Air

J. E. Anderson

RWI - November 21, 1925 - P3 - Construction

RWI - May 15, 1926 - P10 - Scheme

Referenced in RWI May 15, '26, Index. Equivalent to 9 tubes: First six tubes are 199s and the last three are 201As. Used Carborundum fixed crystal as first detector and Amperites in all filaments. First stage is a tuned RF amp. Filter & IFs transformers are unnamed and oscillator coil can be of any commercial type. Scheme shows iron core IFs. All coil windings are given. Metal shield around oscillator stage. Believe J. E. Anderson works for RWI.

General Radio - Bernard

n / a

Bernard Portable

April 3, 1926

199. 201A

7 x 18

General Radio

Misc

Iron

Air

Herman Bernard

RWI - April 17, 1926 - P10- Construction

Used two General Radio 271 transformers with the filter unit and three Meloformer audio transformers. Four part weekly construction article RWI, Ap 3, 10, 17 [X], & 24. '26. Used either 199s or 201As. Might have a centered panel meter. 7 x 18 inch panel.

General Radio - Best

n / a

Best Modified Superheterodyne Shielded Model

(Fall 1925)

7 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

Three-dial Super. The center dial on the front panel is connected to the variometer which varies the inductance of the antenna tuner. See Note 21. "All Wave". Used UV199s.Completely brass shielded. Could have General Radio 271, Jefferson 150, Silver Marshall 60 KC, Baldwin-Pacific Shielded IFs. Remler NOT mentioned! But, Best mentioned in the article that the IF should be between 40 and 50 KC, which, at 45 KC, would be perfect for the Remler IFs. Maybe didn't want to create conflict of interest. Sub-panel is 16 gauge brass and is 7x16. Brass shields were used to sepaarate various sections of the radio inside the case. Adapted to a long wire outdoor antenna. A hand-wound "loading coil" was used to compensate for various lengths of antenna wire starting at 75 feet.

General Radio - Brunn

n / a

Five Tube Super-Heterodyne

00………………….

5 [+ audio]

General Radio

Misc

Iron

Air

Brunsten Brunn

RWI - January 8, 1927 - P9 - Lite Construction

RWI - January 8, 1927 - P9

Article says "The intermediate transformers may both be General Radio filters (331 type)." Antenna & oscillator coils were homebrew.

General Radio - Fenway Everyman's

n / a

Fenway Everyman's Receiver

February 1926

9 [4 ******]

9 - 201A

8 X 28

1 -V & 1 - MA

General Radio

Misc

Iron

Air

Leo Fenway

New York City

RWI - March 6,1926 - P2 - Complete Parts

RN - June & July 1926 - P?? & P44 - Construction

RN - June 1926 - P1656

Three-dial set! Switches from 4-tube Regenerator to 9-tube Super Het. "One stage of TRF with regeneration, a non-regenerative first detector, three stages of iron core medium frequency amplification--from 30 KC to 60 KC--a non-regenerative second detector, and two stages of transformer coupled audio frequency." Three-part weekly series in RWI beginning Feb. 6, '26 (13 & 20). Although brand of parts is not specified in April '26 RN, developer used Silver-Marshall Oscillation Coil and IFs. April '26 RN shows scheme & much more info. Ad in RWI March 6, '26, P2, and RN June '26 show General Radio IFs. Also see Note 21. Schematic also in Secor's "Super Het - Which One?" - Radio Listener Guide (No Month 1927). Quoted from Secor article (Publication unknown): "One of the latest superheterodynes which comprises simply a few improvements in the general circuit arrangement, coupled with one stage of tuned radio frequency ahead of the first detector, and shielding, to increase the range of reception, is known as the Fenway. On studying this circuit you will see that you can utilize the features of this super?het if you already own one, by simply adding one stage of tuned radio frequency ahead of the first detector. Mr. Fenway in his superhet shields various parts of the circuit, and those interested in these desirable features should peruse carefully the articles which have appeared in various radio journals. Referring to Fig. 3, the diagram of the Fenway superheterodyne, you will note the antenna coupler. This may be any standard coupler with or without a rotor which is not used, the proper size of variable condenser being used to tune the secondary of course. Next for our consideration comes the radio frequency coupler labeled L1 and L2. As diagram Fig. 4 shows, this coupler “B” may be an ordinary variocoupler, using the secondary or tickler as the rotor P, the secondary of the coupler being tuned by a suitable size variable condenser, V. The oscillator coupler with the three coils, L3, L4, and L?5, may be of any standard form, or else constructed according to Mr. Fenway's specifications, as given in articles referred to. The intermediate transformers may be of any well-known make, Mr. Fenway specifying those of the iron core type. (Likely S-M - Editor) This super-heterodyne requires three tuning controls or variable condensers, and it is the writer's opinion that the same results can be obtained with a nine tube lineup, utilizing an extra stage of intermediate radio frequency (4 stages in all), as pointed out previously."Fenway, 29 West 64th Street, NY. Moved in Dec '28 to 831 Eighth Ave (across from Madison Sq Garden)...then known as DX, Inc. Entire radio is shielded as around inside of the case, top to bottom, and individual tubes stage copper shielding. (I bought this radio in August 2007 for $1750 including shipping from a collector in New Jersey. He had it for some 15 years and knew the original builder! Entire set of parts might have been bought from "Chas W. Down" radio shop in New York. See ad.)

General Radio - Funkerburk

Funderburk Engineering Corp.

Superheterodyne Receiver

(1925)

General Radio

Misc

Iron

Air

Boston

Pictures from eBay 01-15-04. Used General Radio parts inside & out. An Ameritran Deluxe Audio. Used 301 voltmeter. Mahogany case. Measures 27 ¾" x 8" x 10" deep. Panel slightly wider than the case. Weighs 35 pounds.

General Radio - Hollingshead

n / a

Super-Heterodyne De Luxe

March 1926

7 - 199 & 1 - 120

7 x 18

General Radio

Misc

Iron

Air

Paul Hollingshead

J. E. Anderson

RWI - March 20, 1926 - P3 - Construction

RWI - March 20, 1926 - P3 - Scheme

Compact set. Used 7 - UX199s and one UX120. Most wiring under baseboad. Picture of set on front cover of RWI issue. General Radio IFs (271) are iron core with a tuned air core filter transformer (331). Article says the IFs can tune 30 to 60 KC. Oscillator circuit was of the Hartley Parallel Feed type. Meter that was recommended was a Weston Voltmeter. Panel is 7x18 inches.

General Radio - QST

August 1924

(QST - August 1924)

General Radio - St. Louis Daily Globe

St. Louis Daily Globe-Democrat

St. Louis Daily Globe-Democrat Superheterodyne

Summer 1926

6 - 199

7 x 21

General Radio

Misc

Iron

Air

St. Louis Daily Globe-Democrat Staff

St. Louis

RN - [Note 21]

Get pictures and scheme from RN, "Superheterodyne" book. Only two IF stages. All General Radio parts. Look for a thin piece of copper over the baseboard and behind the front panel for shielding as designed.

Gilbert - Remler

Gilbert

Gilbert Superheterodyne Model Z5

(1925)

8 - 199

Remler

Cylindrical

Iron

Gerald. M. Best

Appears to be Remler Best with Gilbert name on the mottled dark brown & black front panel. On eBay (1103). Shows nice battery box. Used 199 tubes. Seller said the cabinet size is 31x14.5x9.5. Apparent terminals for loop.

Goldsmith

n / a

Short-Wave Code Signals Super-Heterodyne

May 1928

5 [+ 1]

(Unknown)

Lloyd T. Goldsmith

RB - May 1928 - P13 - Construction

RB - May 1928 - P13

Four-dial receiver. First three dials tune the IFs. It has a separate one tube unit attached to a 5 tube Super. Sixth tube is Beat Fequency Oscillator controlled by the fourth dial. This Super Het is used in conjunction with the "Universal Short-Wave Receiver" on page 13 by the same developer. Completely shielded with front dial meter. 7x24 inch panel.

Globe

Globe Radio Equipment Company

Super-Heterodyne Kit "Original Globe Coils"

August 1924

Globe Radio Equipment

New York City

RN - August 1924 - P240 - Kit

"Consists of Oscillation Coupler, One Input Transformer, 3 Intermediate Transformers. All transformers are matched and mounted in a single unit. Complete wiring diagram with each kit". Kit is $15.

Godley

n / a

Godley Super-Heterodyne

December 1921

Paul F. Godley

Leutz [Note 7 - P151]

December of 1921, Godley received the first signals from across the Atlantic Ocean from Scotland, using his homebuilt Super-Het, maybe a Leutz design. Note 4: P108-110.

" "

n / a

Paragon Super-Heterodyne

February 1923

" " " " "

(RB - February 1923 - P?? - Construction)

RB - April 1923 - P502

Godley's (based on Armstrong's Super Het) has RC networks rather than IFs. RB Feb 1924 P330 article called "Supersensitive Long-Range Receiver"

Graybar ^

Graybar Electric Company ^

Model 330 [A-C] ^

1929 ^

RCA

????

$147.00 ^. Division of Westinghouse ???

" " "

" " " " " " " " "

Model 330 [A-C] Console

1929

" "

????

Division of Westinghouse ???

" " "

" " " " " " " " "

Model 340 [A-C] ^

1929 ^

" "

????

Same as RCA Model 62. $375.00 ^.

31 189

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPE

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Haddaway

Haddaway Incorporated

Haddaway Resistance Coupling Unit

January 1925

n / a

Haddaway

Flat Sqaure

Resistance

Los Angeles

RN - January 1925 - P1332 - Coupling Unit Only

Appears to be RC coupling unit for Supers. $99.50 ^. Located at 1806 South Hoover St.

Halldorson

Halldorson Company, The

Halldorson Shield Grid Super 8 [DC]

Fall 1928

Halldorson

Chicago

Westrad Catalogue - Fall 1928 - P45 - Complete

Used 3 - 222, 3 - 201A, and 2 - 171 or 112 tubes in push-pull. Shield Grid used in 1st RF and IFs. Can feed phono pickup through the amplifier stages. DC version lists for $83.30, Westrad price $48.98. See Thompson, Walt S., Jr..

" " " "

" " " " " " " " "

Halldorson Shield Grid Super 8 [AC]

Fall 1928

" " " "

" " "

RSWC - October 1928 - P30 - Complete

Used 2 - 227, 4 - 226, and 2 - 171 or 112 tubes in push-pull. Shield Grid used in 1st RF and IFs. Two stages of S. G. IFs. Can feed phono pickup through the amplifier stages. AC [110 v, 60 c] version lists for $86.30, Westrad price $50.75. AC Power Supply using 280; lists $37.00, Westrad $21.76. See Thompson, Walt S., Jr..

Halowat (possibly)

Hallock and Watson

Halowat Superhet (possibly)

(1924)

(M)

Remler

Cylindrical

Iron

Gerald M. Best

Portland, OR

From Dan Merz (djmerz@3-cities.com) Has this set. Said "Same manufacturer as more common 'Halowat TRF'."

Hanscom

Hanscom Radio Devices

Superunit

November 1924

4 [+ 2]

9 x 18

Hanscom

Misc

Module

Allan T. Hanscom

Woonsocket, R. I.

RB - Januaryuary 1925 - P615 - Module

RB - November 1924 - P40 - Construction

RB - November 1924 - P44

This is for the six tube Super Het. With the Hanscom 4-tube Module, two tubes are outbound. RB for Nov '24 has 9x18 inch panel. Barawik for Fall '25 (P21) says: "...consists of a blocking tube to prevent radiation from the oscillator, one stage of untuned radio frequency amplification, the oscillator, two tuned stages of intermediate frequency amplification, and the detector on only four tubes".Also, lists 199 & 201A versions. $31.25. Barawik, Oct '26, P36: "Type A" is for standard 201As & "Type C" is for UX201A & UX199s. Also, says $29.50 each. There is a "Type B", possibly for UV199s. "Knockdown" still listed in RTD, Aug '25. Panel can be as small as 7x18 inches.

" " "

" " " " " " " "

Hanscom Four-Tube Super Set

Spring 1926

7 x 10

" " " "

" " " " "

" " " " " "

Barawik Co. Catalogue - Spring 1926 - P30 - Complete

Complete 4 tube Super using Superunit. Has 1 RF regenerative detector and 2 audio stages. Includes "S. C. Capacity Element" with engraved panel (Says "Hanscom Super Set") and gold plated fittings. $39.25 Simply, the panel, two variable capacitors, and a Martin Copeland single dial. Used with the Superunit Junior. 7x10 inch panel. $12.15

" " "

" " " " " " " "

Hanscom Six-Tube Super Set

Spring 1926

6 - 201A

7 x 18

1 or 2

4 ?

1 - V

" " " "

Exposed diamond-weave & large cylinder

Air

" " " " "

" " " " " "

Barawik Co. Catalogue - Spring 1926 - P30 - Complete

Complete 6 tube Super using Superunit. Includes loop, engraved panel (Says "Hanscom Super Set"), meter, 6-sockets, 2-Thordarson audio xfmrs, and gold plated fittings. $59.40 Simply, the panel, two variable capacitors, and a Martin Copeland single dial. Mght have two dials in close proximinity without single MC dial. 7x18 inch panel. Used with the Superunit Junior that has a 7x10 inch panel. $12.15

" " "

" " " " " " " "

Hanscom Superunit Auto Set

Spring 1926

" " " "

" " " " "

" " " " " "

Barawik Co. Catalogue - Spring 1926 - P30 - Complete

A 4-tube Super designed for an auto. Completely enclosed. Front panel has two-dials, light, rheostat, and lock. Back panel has audio jack, battery clips, and a knob. It's 3 1/2 inches deep and Used two bolts to hold it. "Specifications: 4-201As, RF detector, 2 stages Thordarson audio". $27.95

Hardy & Sons

Hardy & Sons, L. H.

Toroidal Transformer ["Toro-Tran"]

February 1924

n / a

Hardy

New York City

PR - February 1924 - P42 - Transformer Only

Ad says "After many months of testing and experimentation, our research engineer has developed a Toroid Radio Frequency Transformer for use in neutrodynes and Super-Heterodyne circuits. 3,300 meter type $9.50."

Haynes

Haynes-Griffin Radio Service, Inc.

Haynes Multi-Unit Super-Heterodyne

September 1923

McMurdo Silver-Wound

Vertical Tuna Can

Air

A. J. Haynes / McMurdo Silver

New York City

PR - Sept / Oct / Nov / Dec 1923 - Various - Construction

PR - Sept / Oct / Nov / Dec 1923 - Various

From articles in PR in 1923, Sept ("Haynes DX Receiver"), Oct (Haynes Two-Step Amp), Nov (Separate Oscillator), & Dec (Intermediate Wave Radio Frequency Amplifier). Special thanks to McMurdo Silver for developing the IFs?? Used a Haynes-Griffin Oscillator Coil. Haynes audio amp is in Oct '23 issue.Layout shown again. RB - Mar 1924 - P416 & 417 / P456ish for pix of IF in ad??? CRCB May 1924 has complete article on construction with scheme. PR, Oct 24, P371: Schematic. PR, June '24, P71 shows three (3) unit Simplified Super??? Tuned to 3000 meters??? This set was reconstructed by Billy Richardson. Haynes advertised in 1922 in RN. See his pix.

Haynes Griffin

Haynes-Griffin Radio Service, Inc.

Simplified Super-Heterodyne

January 1924

Haynes-Griffin

Tall Square

100

Air

A. J. Haynes

New York City

RB - January 1924 - P "I" - Complete / IFs & Osc Coil

RB - January 1924 - P210 - Construction

RB - January 1924 - P213

Set Used tall square IFs first advertised in PR Dec 1923 (X). McMurdo Silver was Haynes' assistant who helped build 20 Hets (some shown in article including a three-dial version) in the Fall of 1923 before this set was described as the best. It used square black case IFs. It's based on the multi-cabinet set immediately above. Construction article in Jan '24, RB. This Super was first tested at WHAS, Radio Broadcast Labs, Louisville after 19 previous models! McMurdo Silver went on to be Hayne's store manager when the Chicago location was opened. Panel is 7x24 inches.

" " " " "

" " " " " " " " " "

"New and Improved Radio Apparatus"

February 1924

n / a

Haynes-Griffin

Tall Square

100

Air

" " " " "

RB - February 1924 - Back Pages - IFs / Osc Coil

These IFs are black, vertical rectangular. Pre-drilled panel advertised: 7x24 Hard Rubber. "Ask for complete price list."

" " " " "

" " " " " " " " " "

Laboratory Matched Transformers

April 1924

n / a

Haynes-Griffin

Conical

150

Air

" " " " "

PR - July 1924 - P280ish - IFs Only

April '24 (RB - Back Pages) had these slightly cone-shaped IFs. Most likely they were Air Core at 150KC (2000 meters), according to the Haynes-Griffin newsletter of Oct 1924. Another ad in CRCB 1924. RN, June '24 P1833 shows Kit / Parts. Also RB June '24 (Back Page) shows complete / IFs & Osc Coil. This ad shows "coned" IFs, but still shows square IFs on receiver in the pix in ad. RN, August 24: "Sold only in matched sets of four". Published booklet, "Trouble shooting in the Super". Advertised his published book "Solving the Mystery of the Super-Heterodyne" in RDI, Sept. 20, '24 (P23).

" " " " "

" " " " " " " " " "

De Luxe Super-Heterodyne - Model B

February 1925

[6] 199 & [3] 201A

7 x 18

Haynes-Griffin

Conical

150

Air

" " " " "

R - February 1925 - P49 - Complete

R - February 1925 - P15 - Construction

R - February 1925 - P16

Three (3) tuning dials! TRF front end. "Special type of tuned radio frequency amplification used ahead of the straight super-heterodyne…" Used "Six dry cell and three storage battery tubes". See De Luxe Model A below (It came last).

" " " " "

" " " " " " " " " "

De Luxe Super-Heterodyne - Model A

May 1925

201A

7 x 18

Haynes-Griffin

Conical

150

Air

" " " " "

RB - June 1925 - P297 - Picture / Description / Blue Prints

Three (3) tuning dials! TRF front end. "Special type of tuned radio frequency amplification used ahead of the straight super-heterodyne…" Used "Nine storage battery tubes". See De Luxe Model B above (It came first). 7x18 inch panel.

" " " " "

" " " " " " " " " "

Super-Heterodyne Portable

August 1925

Haynes-Griffin

Conical

150

Air

" " " " "

RN - August 1925 - P162 - Portable Set Directory

44 lbs, 21x8x18 inches. Self-contained cone speaker. $100.00.

Haynes Griffin - Cockaday

n / a

Superheterodyne Reflex

January 1925

Haynes Griffin

Cone

150

Air

Lawrence M. Cockaday

New York City

PR - May 1925 - P43 [Wholesale Radio] - Complete

PR - January 1925 - P36 - Construction

PR - July 1925 - P67

Construction article. Scheme also in June 1926 PR on page 157. Used Haynes-Griffin IFs and Precision "Autodyne Coupler" coil in PR - May '25 - P34. Sold thru Randolph Radio Corp. catalogues in 1925 for $65.80 ^. An ad (PR, March '25, P115) for "Wholesale Radio Service, New York City" says they will build the set and put it into a nice mahogany piano hinged cabinet for $99.50. Unbuilt & without cabinet is $81.30 but no tubes for either. "S. Hammer Radio ad (PR, Mar '25, P126): "Wired complete in mahogany cabinet with Korach loop for $110".

(Heteroplex)

Elvin Radio Co.

(Deluxe Heteroplex)

March 1926

PR - March 1926 - P295 - "New Products"

Maybe this: "Heteroplex Radio Corp., apparatus, $1,500,000. F. Vondorn, Raymond G. Penglase, New York; E. C. Ballantyne, Jersey City, N. J, (Capitol Trust Co. of Delaware)" RWI, March 7, '25, New Corporations, P15.

Hetrola

Hetrola Radio Co. Ltd.

R-199-P [Portable]

August 1925

RN - August 1925 - P162 - Portable Set Directory

35 lbs, 18x14x8 inches. Built-in speaker. $165.00.

HFL

High Frequency Laboratories

H. F. L. Transformers

April 1926

n / a

HFL

Flat Rectangle

Iron

Air

Ernst Tyrman

Chicago

RN - October 1926 -P383 - Kits / Parts

Tyrman left HFL to start his own what became famous company in 1927. IFs: "H.210" Iron-core tuned 32 to 42 KC. "H.215 Air-core tuned to 37 KC. The audio is the "F.320" and the Choke is "L.425" from RN Jan '27, P908.

" " " " " " " " "

Nine-in-Line Super

September 1926

HFL

Flat Rectangle

Iron

Air

Ernst Tyrman

" " "

CRCB - September 1926 - P84 - Parts

CRCB - September 1926 - P85 - Construction

CRCB - September 1926 - P88

"Tube compliment: 1st detector-201A, 4 IFs-WX12s, 2nd detector-201A, oscillator-201A, 1st audio-201A, 2nd audio-UX112." RWI, Ap 2, 9, 16, & 23 construction series. RN, Apr '27, P1245 Construction. Barawik catalogue, Oct '26, P30 - Complete. Chicago Salvage, Nov '26, P8, $82.50. Another schematic in RM - Dec 1926 - P128. 7x26 inch panel.

" " " " " " " " "

N27 Nine-in-Line

March 1927

HFL

Flat Rectangle

Iron

Air

(Ernst Tyrman)

" " "

CRCB - March 1927 - P139 - Construction

CRCB - March 1927 - P1426

Also, RN, April '27, P1245 ??, Construction, layouts, pix, and scheme. Construction: RWI, April 2, 9, 16, & 23, 1926. 7x26 inch panel.

" " " " " " " " "

N28 Nine-in-Line

September 1927

HFL

Flat Rectangle

Iron

Air

Ernst Tyrman

" " "

Harry Alter Catalogue - October 1927 - P56 - Complete

CRCB - September 1927 - P155 - Construction

CRCB - September 1927 - P156

Also known as "Improved" or "Nine-Ln-Line Plus". Used NEW Remler Drum Dial. Because of the dial arrangement, it might be called the "Unicontrole Nine-In-Line". See Note 1. Might use the new "C-16" audio and "C-25" output audio. Ad in H-C Catalogue, Late Summer '27, P68 at $74.95. S. Hammer Radio Co. offered it completely wired in a Corbett cabinet for $167. 7x26 inch engraved panel.

" " " " " " " " "

Improved Nine-In-Line ???

September 1927

HFL

Flat Rectangle

Iron

Air

Ernst Tyrman

" " "

Harry Alter Catalogue - October 1927 - P56 - Complete

CRCB - September 1927 - P155 - Construction

CRCB - September 1927 - P156

" " " " " " " " "

N28 Nine-in-Line [AC or DC]

January 1928

HFL

Flat Rectangle

Iron

Air

" " "

CRCB - January 1928 - P146 - Construction

CRCB - January 1928 - P148

(See directly above) AC version. 7x26 inch panel.

" " " " " " " " "

HFL Model 10 Screen Grid Isotone - Custom Built

June 1, 1928

HFL

Flat Rectangle

450

" " "

RSWC - October 1928 - P29 - Complete

CRCB - September 1928 - P54 - Lite Construction

CRCB - September 1928 - P57 - Layout & Scheme

June '28 issue of RLG, P151: "Will release on the First of June". No untuned, no tuned, 3 IFs, 3 Audio Push-Pull ^. Six RF, 1 Osc., 3 Audio. $105.00 ^. Operates at 450 KC which makes the set an "absolute one spot receiver". IFs are in tall rectangular shielded cans. RSWC, Oct '28: "Perfect 8 Kilocycles Selectivity." "Manually tuned R. F. amplifier stages." "Measured gain of 65 per stage". From 9/28 CRCB, "From Factory - Wired Units - In One Hour". Using only nuts and bolts, only ten wires to assemble. Three stage "screened" grid RF amplifier. Can use a short 10 foot wire for an antenna which can be connected to the grid of the first RF amp. List $195. Net $114.66. ABC Power Supply $55.86. Isotonic Audio Amplifier $32.34. Screen Grid version $35.28. Westrad, Fall '28: "Uses 2-201A, 3-222 screen grid, 3-112A, and 2-171A tubes". "Anyone can solder ten wires." This is how they get around RCA! Shown in the Allied, late 1928, but not early 1929. Barawik Cat. Spring/Summer '29 - P100 $114.60 complete.

" " " " " " " " "

Special Nine with the New 250 Power Amplifier

February 1929

HFL

Flat Rectangle

Iron

Air

" " "

RN - February 1929 - P791 - Complete

Screen-grid ^. No untuned, no tuned, 4 IFs, 3 Audio ^. AC version $61.74 / DC version $55.86 / 250 Amplifier & B supply $45.28. Barawik Cat. Sp/Summer '29 - P101 = DC model, Kit $55.86, Factory assembled/wired $73.50. AC model, Kit $61.74, Factory assembled/wired $79.38. 7x21 inch panel.

" " " " " " " " "

Mastertone Laboratory-Made Receiver (A-C)

September 1929

HFL

Impedance

" " "

CRCB - September 1929 - P151 - Completely Wired

RN - December 1929 - P524 - Lite Construction

RN - December 1929 - P524

"Completely Built, Wired and Assembled by H-F-L Engineers. Shipped Ready to Operate." Five tuned screen grid IF stages and power detector with Push-Pull 245s. Also, RN, Oct '29, P375, Ready-To-Operate. RN, Dec '29, P524, Circuit Details. Used one UX280 for power supply. 7x21 inch panel. This is the last HFL in the decade: The Mastertone "Super 10" with Hopkins Band-Rejector System was offered Nov. 1930 per CRCB (Vol. 11, No. 4) for Nov. 1930.

HFL - Citizens Radio Call Book

n / a

Citizen's Super 8 Using HFL Isotone IF Amp

November 1928

HFL

Flat Rectangle

Iron

Air

New York City

CRCB - November 1928 - P69 - Construction

CRCB - November 1928 - P71

Like a DC version of the HFL Model 10 Isotone. Three 222, 1-112A, 3-201A, and 1-UX250.

Hilco

A. E. Hill Mfg. Co.

Super Hilco-Dyne Kit

August 1924

7 - 201A or 199

7 x 28

A. E. Hill Mfg. Co.

Tuna Can

Air

Atlanta

RDI - September 20, 1924 - P10 - Kit

Although what was advertised was just the base kit, the information for the radio could be gleened for the ad info. All air-core kit tuned to 40KC / 7500 meters. Kit has 1-Hilco Oscillator Coupler, 1-Antenna Coupler [both available in Aug '24 - RN - P212], 1-Filter Coupler, 3-Intermediate Frequency Transformers, 5- Hilco Precision Fixed Condensers, 3- Hilco Handykins, 1-20 page Instruction Book with Blue Prints for $30. Full kit first advertised in September 1924. Good full page ad in PR Dec '24 - P53 (X). See Algonquin Electric immediately below. Advertised variocouplers in 1923.

" "

" " " " " "

Hilco Oscillator & Oscillator Coupler

Spring 1926

n / a

" " " " " "

Tuna Can

n / a

" " "

Standard Radio Co. Catalogue - Spring 1926 - P26

These parts were advertised independently of a kit. $5.00 each.

" "

" " " " " "

Replacement Hilco IF Transformers

Spring 1926

n / a

" " " " " "

Tuna Can

Air

" " "

Standard Radio Co. Catalogue - Spring 1926 - P26

These parts were advertised independently of a kit. Four matched Ifs at 40 KC for replacement in Ultradyne Supers. Includes four .0025mfd fixed condensers for $19.

" "

Super Hilco-Dyne Nine

November 1927

" " " " " "

Tuna Can

Air

" " "

RN - November 1927 - P497 - Light Construction

RN - November 1927 - P497

This apparently is an update of the previous version. Not a very complete construction article. RN says "Details in a forthcoming issue." Same for RN - Nov '27. See P497.

" "

Algonquin Electric Company, Inc.

Super Hilcodyne Nine

December 1927

Impedance & Iron

Fred A. Jewel

New York City

RN - January 1928 - P721

RN - December 1927 - P625 - Construction

RN - December 1927 - P626

Used one set of Hilograd units (special) that appear to be tunable. Used three stages of TRF and then three tube Oscillator / Tuning circuit. Advertised as…"manufactured and distributed in Complete Sets, Chassis', Units, and Knockdown Kits." This is contrary to the 1925 court order. Leo Potter, President, Algonquin. Algonquin factory listed in Poughkeepsie, NY [RN Jan '27] See HHill, A. E.

Hollister

Lincoln Radio Corporation

Hollister AC 8 Super

February 1929

4 - 222, 3 - 201A, & 1 - 171A

8 x 28

2 - Drum

Lincoln

Tunable Tall Rectangular

Variable 350 to 550

Air

William H. Hollister

" " "

CRCB - March 1929 - P5 - Kit

CRCB - March 1929 - P53

CRCB - March 1929 - P55

This radio is virtually identical to the Lincoln Model 8-80 One Spot. Differences are the Antenna Coil lies horzontally on the Hollister and the two front panel poteniometers were set further apart on the Hollister. This radio used a standard hardwood cabinet and a "Finely Grained Walnut Bakelite (front) Panel", unlike the two tone metal cabinet & metal panel of the Lincoln 8-80. Only one connection on Antenna Coil rather than the two (long & short) on the Lincoln 8-80. Four screen tubes (UX222) and four "Manually Tuned", "Lincoln 101" I.F. stages. Also Used 3 - 201A and 1 - 171A. No untuned, no tuned, 3 IFs, 2 Audio ^. Used Lincoln 1 "102" Osc. Coil, 1 "103" Antenna Coupler, 4 "101" Tuned IF transformers, 1 "105" first AF transformer, 1 "106" second AF transformer, and 2 "104(L & R)" condensers. Kit: $92.65 ^. Radio for July '29 has article & scheme on Hollister. Barawik Cat., Sp & Summer '29 says "Gain for first stage (audio) is 4.4, for second stage is 3.7. Range from 40 cycles to 5,000." Used the Clough audio system as touted in CRCB of Nov. 1928. Covers 50 cycles to 7,000. Can use 15 foot indoor aerial, but ad says it can be used without any antenna at all! William H. Hollister (designer) wrote the book, "The Secret of the Super". Address: 329 South Wood Street, Chicago. Lincoln Radio Corporation also sold Silver-Marshall, Tyrman, Scott, and HFL superhets out of this address. Lincoln also made available a Hollister power supply; "AB 250" for $60 retail (see CRCB for March 1929 ad), which used a 381 tube.

Holmes

Holmes Electric Manufacturing Co.

Holmes Air-Core RF Transformers ??

June 1927

n / a

Chicago

RN - June 1927 - P1468 - "Product Review"

Holtzmark

Wm. Holtzmark

Super - Hetrodyne Model H.V.3

[1926]

9 - 201A

(7 x 28)

(TL)

Victoreen

Tuna Can

Air

Charles J. Victoreen

Wm. Holtzmark

St. Louis

Custom-built Victoreen kit with replacement coil for the antenna coil. There's a small vernier on the upper left of the front panel to help one of the major tuning dials control the oscillator [I think]. The oscillator coil is fixed approximately 3.5 inches across. Modified to 9 tubes with push-pull using Thordarson transformers. Says "Mfg by Wm. Holtzmark, St. Louis" at the center of the panel and "Super - Hetrodyne Model H.V.3" on the upper, right side. Owned by Jim Hill [mailto:slimjimwas@cox.net]

Hopkins

Portable Super-Het

August 1925

Russel H. Hopkins

RA - August 1925 - P13 - Article

Seven 199 tube portable. 7x18 inch panel

House of Coils, The

Unique Coil Co.

Type F - Super Heterodyne Oscillatior Coil

December 1924

n / a

New York City

RDI - December 13, 1924 - P30 - Oscil. Coil Only

Humphries

NIF

Eight Tube Super-Heterodyne Receiver

October 1924

LeRoy E. Humphries

Atlanta

RDI - October 11, 1924 - P15 & 18 - Lite Construction

RDI - October 11, 1924 - P15

Called "The New Multitube Circuit". Article by Harry J. Marx. Original circuit used peanut WE 215A "N" tubes, but article in RDI, Oct. 18, '24 shows how to use 201As & 199s.

33 222

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Impedance Coupled - CRCB

NIF

Impedance Coupled Super-Heterodyne

(September 1927)

[Note 1]

This set is likely the same as the "Samson Impedance Coupled Super" below.

Imperial - Vistoreen

NIF

The Imperial Eight

(1925 or 1926)

8 - 201A

7 x 26

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

???

Several of these have been found using the early Victoreen layout. Owned by Ron Lawrence. Second one in heavier case owned by Ricky Janis. Third on eBay in March 2007. Panel and parts layout are the same Victoreen. Panel markings only slightly different between two of them. No advertising found for this het.

Imperial

Imperial Radio Corp.

Imperial

September 1926

Chicago

RN - September 1926 - P290 - New IF Transformers

"New transformers…perfectly tuned and matched to exact peak…"

Infradyne DX - Remler

Radio Constructors Corp.

Model DX 1928 Infradyne

July 1927

10 [5 *****]

5-201A, 4-199, 1-112 or 171

Copper Embossed Cabinet 11 x 26

2 - Drum

1 - V

Remler

Module

3490

Air

E. M. Sargent & L. C. Rayment

Oakland, CA

Radio - July 1927 - P66 & 67 - Two Pages of Features

CRCB - September 1927 - P131 - Construction

CRCB - September 1927 - P135

Hybrid. From H-C cat, Late Summer '27: New Improved 1928 Remler DX Infradyne. Used "New" Remler R. F. Amplifier with 3-ganged capacitor. Used "New" Silver Marshall 220 audio transformers. "Described and specified in 'Radio', 'CRCB', & 'RLG'." "Tubes used: 5-301As, 4-199s, and 1-112A or 171A. $105.75 complete." Same description in Haskin's Fall 1927 catalogue. S. Hammer Radio Co offered a completely wired version for $194.50 in Sept '27 [P4]. Super-Het circuit designed by Sargent 1926. "Radio Par Excellence". Ten tube Super Het or five tube "local" (TRF) set. Used Remler #700 IF amp and a Remler #710 TRF amp. RN - Nov '27 - P468 -Scheme / Information. RM - Dec '26 - P128 - Scheme. Also see H-C Catalogue, Late Summer 1927, P55 and RN - Nov '27 - P468 -Scheme / Information, RM - Dec '26 - P128 - Scheme, and CRCB - Sept 1927 - P67 - 90% wired / Kit. Copper embossed cabinet was part of the kit. A RN article for Nov 1927 says cabinet is 26 1/4 long X 8 high X 12 deep. Radio Constructor's Corp. was likely an assembly operation in Oakland for Gray & Danielson. Also see Remler.

" " " " " "

" " " " " " " " "

Remler Units (1928 Infradyne)

November 1927

" " "

" "

" " " " " " " "

CRCB - November 1927 - P227 - Parts

" " " " " "

" " " " " " " " "

1928 Infradyne

November 1927

" " "

" "

" " " " " " " "

Alter's Catalogue - October 1927 - P55-??? [Note 2]

" " " " " "

" " " " " " " " "

New 1929 Infradyne

Late 1928

10 [5 *****]

Remler Module

" " "

3490

" "

" " " " " " " "

Allied Catalogue - Late 1928 - P99 - Complete

Allied, late '28: "Tubes used: 5-301As, 4-199s, and 1-112A or 171A. $107.30 complete".

IRCO

Independent Radio Corp.

IRCO Type BK IF Transformers

March 1927

9 ??

IRCO

Air

Philadelphia

RB - March 1927 - P531 - IF Transformer

"Independent Radio Corporation Precision Apparatus" trademark used in RB ad, April 27, P547. Used "five transformers before the audio stages". Permits panel size 17x10 inches.

Jaynxon

Jaynxon Radio Laboratory

Jaynxon Super-Heterodyne

July 1924

New York City

RB - July 1924 - P295ish - Complete / Kits / Parts

Used "GR Type 271 Pick Up" & "GR Type 268A Oscillation" transformers (made by Jaynxon) with the General Radio IFs. 7x30 panel. $175 complete. Note 27.

Jefferson

(Long Wave) IF Transformers

August 1925

n / a

Jefferson

Rectangle

Chicago

R - August 1925 - P49 - IF Transformer Only

Jefferson #150 IFs and Jefferson #155 Filter. Harry Alter Wholesale Catalogue of Sept 1926 shows the transformer and two model numbers "3258" and "3259" (Alter's stock numbers) with the same info as follows: "The effective band width is 13,000 cytcles wide. To be used with C299 or CX299 (dry cell tubes) only" "Long Wave 10,000 M, Input (30 K. C.) Each $1.98." (Reference to two RF transformers as early as Feb '24 - PR) Ad says: "Best specifies Jefferson IFs for his new Superheterodyne." Listed as parts for Midget Super in RR, Oct '25, P12 (See Radio Review below). Includes "Tuned" and "Untuned" IF transformers. See Best above. Also see Radio Owners Service Company below. See Note 27. Also called "150 L. W." $5.00 Address 501 South Green St. n RTD, Feb '25.

Jefferson - Best

n / a

Best Modified Superheterodyne Shielded Model

(Fall 1925)

7 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

Three-dial Super. The center dial on the front panel is connected to the variometer which varies the inductance of the antenna tuner. See Note 21. "All Wave". Used UV199s.Completely brass shielded. Could have General Radio 271, Jefferson 150, Silver Marshall 60 KC, and Baldwin-Pacific as Best says these are all shielded IFs. Remler NOT mentioned likely because I don't think they are shielded units.. Sub-panel is 16 gauge brass and is 7x16. Brass shields were used to sepaarate various sections of the radio inside the case. Adapted to a long wire outdoor antenna. A hand-wound "loading coil" was used to compensate for various lengths of antenna wire starting at 75 feet.

Jefferson - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Jefferson

Rectangle

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Jefferson - Radio Owners Service

n / a

Jefferson Superhet Eight

PNF

October 1925

8 - 199

7 x 20

1 - V

Jefferson

Rectangle

" " "

Radiocast Weekly - October 18, 1925

A good way to help distinguish this kit from most is to see if it has one of these three General Radio Oscillation Coils: # 277A, 277B, & 277C. Parts list recommended three small Benjamin tube sockets and five large Benjamin sockets. Recommended one Weston voltmeter. Used three Jefferson IFs. Could have Thordarson, All American, Lyric, or Karas audio transformers. Complete kit at $82.75 or $89.50 (special audios) sans cabinet and matched tubes at $2.50 each. RSOC is addressed at 660 12th Street, Oakland.

Jellicoe

n / a

Five Tube Super Receiver

PNF

April 17, 1926

5 **

(201A)

7 x 20

NIF

PNF

NIF

Jasper Jellicoe

RWI - April 17, 1926 - P6 - Article

RWI - April 17, 1926 - P6 - Scheme

Used two crystal detectors in place of both detector tubes. Only says used shielded IF transformers. 7x20 inch panel.

Jones

NIF

Versatile Superheterodyne

December 1926

Leslie Raymond Jones, developer?

RN - Dec 1926 - P663 / Jan 1927 - P?? - Construction

RN -January 1927 - P??

See Jan '27 - RN for construction details. Used either UX199s or UX201As.

Johnson

NIF

Eight Tube Super

May 1924

(Homemade)

Leo Johnson

Built by ham, Leo Johnson, 2CTG. Coils under the panel look homebrew.

Kardon

Kardon Products Inc.

Kompentrol - The Super Heterodyne

1924

Kardon

Peter Kardon

New York City

Antique Radio Classified - April 1994 - P10 - History

Kardon also built Carnival and Kardonstrip and, later, Diva, but Kardon quit. According tp Radio Retailing for August '25, Kardon was sued after he sold only ONE Super which was to a Westinghouse employee, but the suit was eventually dropped. All this from the article "The Kardon Radio Story" in ARC, April '94, researched and written by Mike Parker. Became Harmon Kardon.

Kellogg

Kellogg Switchboard and Supply

Kellogg Superheterodyne Transformers

1924

n / a

Kellogg

Rectangle

Iron

Air

Chicago

Montgomery Ward & Co. Catalogue - 1924 - P30 - Kit

"Iron core type, encased in a metal shell with a bakelite terminal board on top. Plainly marked nickel plated binding posts. Designed for use in sets of four consisting of three superheterodyne and one filter transformer. Filter transformers designed to peak sharply at 45 kilocycles and superheterodyne transformers from 35 to 45 kilocycles. Superheterodyne transformer $4.19. Filter transformer $4.19. Postage, each, 6 cents extra." Address 1006 W. Adams St. in RTD, Feb '25.

Kleinfeld

M. H. Kleinfeld & Co.

8-Tube Super-Heterodyne

PNF

May 1924

M. H. Kleinfeld

New York City

RWI - May 1924 - P28 - Assembled

RWI ad says "Guaranteed…Assembled in beautiful Mahogany Cabinet. List price $225.00…$98.00 Net" 161 West 64th Street, NYC.

Klentz

Klentz Radio Company

Klentz Super-Heterodyne Kit

May 1924

K / BP

n / a

Klentz

Tall Rectangle

Air

Chicago

CRCB - Fall 1924 - P107 - Parts / Blue Prints

CRCB - Fall 1924 - P106 - Layout

First adverted "Oscillator Couplers", "Wave Changers", and "Transformers" in CRCB May 1924. No construction info. Slightly different shape to the IF case than later years. IF cans same size and shape as Webster RF transformer in RN, April 1923. Address 2324 North Sawyer Avenue in RTD, Feb '25. Only one stage of audio.

" "

" " " " " " "

Klentz Super-Heterodyne

Fall 1924

7 - 201A

7 x 30

Klentz

Tall Rectangle

Air

" " "

CRCB - Fall 1924 - P107 - Parts / Blue Prints

CRCB - Fall 1924 - P106 - Layout

First advertised "Oscillator Couplers", "Wave Changers", and "Transformers" in CRCB May 1924. No construction info. Slightly different shape to the IF case than later years. IF cans same size and shape as Webster RF transformer in RN, April 1923. Address 2324 North Sawyer Avenue in RTD, Feb '25. CRCB for March '27 says: "Hermetrically sealed, bakelite case, staggered windings, perfect matching. F-500 Transformer, $5.00. I-500 Transformer, $5.00. Set .00015 Matched Condensers, $1.50 per set of four."

" "

" " " " " " "

Klentz Super-Heterodyne

Fall 1925

Klentz

Tall Misshapen Rectangle

Air

" " "

CRCB - Fall 1925 - P161 - Kit / Blue Prints

Three IFs, Ocillator Coil and Filter [Both same shape same as IFs], and four matched capacitors. Ad lists the blue prints available and shows a transformer cut-away. Different can shape from previous model, but the same as Qualitone, Chicago, Oct 1925. Oscillator coil appears the same also with both from Chicago. See Qualitone below. Ratio is 2 to 1. Bakelite cans.

Klentz - Citizens Radio Call Book

" " " " " " "

100 K. C. Super-Heterodyne

March 1927

8 - 201A

7 x 26

1 - V

Klentz

Tall Misshapen Rectangle

Air

" " "

CRCB - March 1927 - P59 - Parts

CRCB - March 1927 - P134 - Construction

CRCB - March 1927 - P136 - Layout & Scheme

CRCB for March '27 says: "Hermetrically sealed, bakelite case, staggered windings, perfect matching. F-500 Transformer, $5.00. I-500 Transformer, $5.00. Set .00015 Matched Condensers, $1.50 per set of four." Recommends the Fiat Loop antenna of Chicago.

" " " " " " " " " " "

n / a

100 K. C. Super

September 1927

(Klentz)

100

Air

New York City

[Note 1]

Says "Used Air Core transformers". Likely thjis is a Klentz.

19 241

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Lacault

R. E. Lacault, Inc.

R. E. 29 All-Wave

April 1929

6 + 2 + 2

3 - 201A, 3 - 222, 2 - 210, & 2 - 281

7 x 24

Lacault

Small Horizontal Coils

120

Air

Robert E. Lacault

New York City

RN - July 1929 - Ad from estate of REL - Alice Lacault

RN - June 1929 - P1090 - Construction

RN - June 1929 - P1092

[Use ad from RN - July 1929 - Ad from estate of REL - Alice Lacault and the one on Page 1130 in RN, June 1929.] Complete construction info is shown in RN, July 1929. This is Lacault's last design; the first time his famous Ultradyne Modulation system used in conjunction with screen grid tubes. Introduced in RWI, Ap 6, 13, & 20, '29. RN text says he "labored to complete this, his finest design, explaining how weak he was in his last days". (He died March 12, 1929.) This set without the associated Push-Pull audio amplifier and the power supply unit looks like a simple six-tube TRF set with two single variable condensers. The P-P amp is AC driven, but the radio itself is battery operated!! Used 3 - 222s and 3 - 201As. Used 1 SG tube in Modulator and 2 SG tubes with 4 tuned circuits making a bandpass filter for IFs. There are only two stages of IF, as such. The distinctive "tuna can" Ultraformers are NOT found here. Rather, these are simple coils of wire on standard bakelite tubes. You'll find four of these coils here. Lacault considered 120 KC as a "high IF". There are three large metal shield boxes found inside this set; the oscillator stage and the two IF stages. One of the coils is found in each of these boxes. The fourth coil is outside the boxes. Three tubes inside the three boxes with three outside. RWI, Ap 20, '29, Cover & P12-13: Lacault RE29 Power Supply. Other RWI articles in early Ap '29 issues and Ap 27, '29 issue. See Madison, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Lacault / de Willy

n / a

Super-Heterodyne with Homebuilt IFs or RCA 1716 IFs

December 1923

10 - 201A

(24 x 18)

R. C. A. [General Electric]

Misc

Iron

n / a

R. E. Lacault & F. de Willy

New York City

RN - December 1923 - P690 - Construction

RN - December 1923 - P690 - Scheme

F. de Willy & R.E. Lacault article from RN Dec. 1923. First reference to Lacault. It's a 10 tube super and built in three units, tuner-oscillator and first detector, IF amps, and the last detector with AF amps. The three units stack on top of each other into a single enclosure. Oscillator coupling accomplished with with honeycomb or homebuilt coils. IFs could be either homebuilt coils or RCA 1716 transformers. See Madison, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Lake Radio Service

HI-AMP Super Heterodyne Kit

October 1924

n / a

Chicago

RB - October 1924 - P545ish - Kit

"Assures success…Best for DX and selectivity…Includes four transformers, and oscillator coupler with complete constructional data $23-25."

Lakeside Supply

Lakeside Supply Company

Microdyne Model 550-EM

March 1925

7 - 201A

7 x 18

Apex

Short Cylindrical

NIF

Air

(E. K. Oxner)

Chicago

RN - March 1925 - P1658 - Manufactured

Pictured is the "Apex Microdyne" in a grand (Desk ^) cabinet. $400.00 ^. RN, Mar. '25, says 2 RF, 2 audio, 2 detectors, and an oscillator. No untuned, 2 tuned, no IFs???, 2 Audio ^. See Microdyne & Stephen.

Langbein & Kaufman

Superheterodyne Oscillator Coil

Fall 1924

n / a

NIF

n / a

New Haven, Conn.

CRCB - Fall 1924 - P52 - Coil Only

Note 27. Numerous coils made by L & K. Model "OC40" was the variable superhet oscillator coil. Hard rubber form with green silk wire. No infor found about frequency range.

Langhorne

Langhorne Radio Company

Langhorne Super Heterodyne

1927 or 1928

8 - 201A

(7 x 36)

(L or W)

Langhorne

Large Vertical Tuna Can

(Air)

Air

Thomas J. Langhorne

Portland, OR

Three-dial super. Gorgeous set! This appears to be factory assembled as the workmanship is superior. Information from Art H. Redman from Portland (8/05): "I would of got back to you sooner but first I had to make a trip to the Mulnomah County Library to find some information. In 1923 Thomas J. Langhorne worked for the C.L. Boss Auto Company. The City Directories from 1924 to 1926 list the Thomas J. Langhorne and Company Radio Parts and Manufacturers at 316 Commonwealth Building. In 1927 and 1928 the Company is listed as the Langhorne Radio Company. The 1928 listing has a C.S. Finley as an associate. No mention of Langhorne. There is no listing in the 1929 City Directory. Therefore the company was in business only from 1924 to 1928. There are no articles mentioned in the indexes of the two Portland, Oregon newspapers the Oregonian and the Oregon Journal." (Thanks, Art! Editor) The first RF stage is tunable with the first of three dials. Not a hybrid. Very long set with engraved panel, but no brand name. Based on the tube sockets used on one of the only two sets known to exist, they were made in early 1925. Buit each IF says "Langhorne Radio Company" which places it in 1927 or 28.

La Peer

La Peer Electrical Mfg. Co.

La Peer "D" Coil Essential Kit

November 1927

n / a

Le Peer

Vertical Tuna Can

Air

Chicago

CRCB - November 1927 - P165 - Kit

CRCB - November 1927 - P35 - Construction

CRCB - November 1927 - P135

"Essential Kit" consisted of one Oscillator and four RF transformers. Used "D"-shaped IF coil inside a moulded, moisture-proof bakelite case to reduce coupling effects. "D" coils were a new principle in late 1927. Two "D" coils face each other inside the case. Shown also in American Radio Co. Catalog #117, Pg 37, Kit Only, Nov 1927 [X]. Retail price was $27.50. American sold them for $16.50. Very small ad in RLG, June '28. Kit weighed five pounds.

" " "

" " " " " " " " "

La Peer AR-9 Super

November 1927

" " "

" " " " "

" " "

CRCB - November 1927 - P165 - Kit

CRCB - November 1927 - P35 - Construction

CRCB - November 1927 - P135

Based on the Le Peer "Essential Kit" & consisted of one Oscillator and four RF transformers. Very unusual as it used a double-detection in the second detector stage. Used "D"-shaped IF coil inside a moulded, moisture-proof bakelite case to reduce coupling effects. "D" coils were a new principle in late 1927. Two "D" coils face each other inside the case. Could be used with loop or outside antenna when used with the optional Le Peer "AC" coil, an additional $2.10. Shown also in American Radio Co. Catalog #117, Pg 37, Kit Only, Nov 1927 [X]. Retail price was $27.50. American sold them for $16.50. Called the "ER-9" and the "AR-9" in the same American catalogue. Very small ad in RLG, June '28. 7x24 engraved panel.

Lavoy - Remler

Lavoy

Lavoy Novodyne

(1925)

6 - 199 & 2- 201A

7 x 28

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

Lavoy

(California)

Dale Davenport owns one now 0906. This brand was listed in an Estes Auction in 2004 and a model appeared on eBay in August 2005. eBay pix are from a seller in Oakland, CA. Likely built and sold in California. Dales' had west coast stations on the Remler paper dials. At least two of these have been on eBay in the last several years.

Leroy

Radio Shop, The

Leroy Super Heterodyne ^

1924

Sunnyvale, Ca.

Three associated companies in Chicago, Long Beach, Ca., and Sunnyvale, Ca ^. Echophone was sales agent for most of their output ^. $175.00 ^

Levy

60 K. C. Peanut Super Using Western Electric "N" Tubes

February 1926

Morris Levy

RN - February 1926 - P1140 - Construction

RN - February 1926 - P1140

Small portable receiver. The RF transformers are in an enclosed unit (Silver Marshall "tub"???). Western Electric "N" tubes were used, but UV199s could be substituted. 7x10 inch panel. Only 4 1/2 inches deep!

Liberty

Liberty Mail Order House

Reflexed Super-Heterodyne Kit [Hanscom]

January 1925

Allan T. Hanscom

New York City

RB - January 1925 - P542 - Kit

Six tube refexed Super. 7x26 inch panel. $138.11

Liberty Electric

Liberty Electric Corporation

Super-Heterodyne Kit No. R-40

July 1924

Liberty Electric

Tall Cylindrical

Air

Stamford, Conn.

RN - August 1924 - P254 - Kit

RN - Oct 1924 - P505: "Type 41 Input Transformer", "Type 42 IFs", Oscillator Pick-Up Coil, & a small, rectangular By-Pass Condenser furnished with Kit. Air-core IFs at 5,200 meters. Radio Age for Sept '24 P52 shows back of set and new factory. That issue says it comes "Complete". Used 17 inch loop. "Knockdown" still listed in RTD, Aug '25. RWI, July 26, '24: ...have purchased...new 35000 square foot modern factory. RN ad ifor Nov, 1924, says "We are now filling an important United States Signal Corps super-heterodyne contract." Panel is 8" x 28".

Liberty Transformer

Liberty Transformer Co., Inc.

Liberty Special Air Core Radio Frequency Transformer

November 1924

n / a

Liberty Transformer

Air

Chicago

PR - November 1924 - P36 - IF Only

Lincoln

Lincoln Radio Corporation

Long 45 Tuner / Kit

January 1925

Chicago

PR - January 1925 - P64 - Kit / Parts

CRCB ad for March 1929 says company "Established 1923". Mentions kit at bottom of ad. Mentions Oscillascope kit (See below). Also see Rex Laboratories, Inc.

" "

" " " " " "

Lincoln Oscillascope Oscillator Coupler

November 1924

n/a

" " "

RDI - October 31, 1925 - P?? - Part

Ad in RDI, Nov 29, 1924, P?? mentions Coupler.

" "

" " " " " "

Lincoln Superheterodyne

December 1926

Silver Marshall

Tuna Can

Air

" " "

RWI - December 4 & 18, 1926 - P?? - Construction??

RWI - January 1, 1927 - P14 - Layout

RWI in two issues, Dec 4 & Dec 18: Used the SM Type 221 and 220 audio transformers.May be same set in Silver-Marshall ad in RLG March 1927, page 20 lists this radio as using SM parts. Followup has good pix in RWI, Jan 8, '27, P14! Also, may be same set in PR, May '27, P534, Parts, Layout, Scheme: Used 4 Lincoln air-core IFs. Item in center of baseboard is a fixed inductor. (See Lincoln pix in my "Gallery" - May have come from Cleveland. See pix.)

" "

" " " " " "

Lincoln 8-80 One-Spot Super

November 1928

4 - 222, 3 - 201A, & 1 - 171A

(7 x 22)

2 - Drum

Lincoln

Tunable Tall Rectangular

Variable 350 to 550

Air

William H. Hollister

" " "

1001 Radio Questions & Answers - Fall 1928 - P112

CRCB - November 1928 - P58 - Construction

CRCB - November 1928 - P59

Four screen tubes (UX222) and four tunable "Lincoln 101" I.F. stages. Also Used 3 - 201A and 1 - 171A. No untuned, no tuned, 3 IFs, 2 Audio ^. Used Lincoln 1 "102" Osc. Coil, 1 "103" Antenna Coupler, 4 "101" Tuned IF transformers, 1 "105" first AF transformer, 1 "106" second AF transformer, and 2 "104(L & R)" condensers. Kit: $92.65 ^. Barawik Cat., Sp & Summer '29 says "Gain for first stage (audio) is 4.4, for second stage is 3.7. Range from 40 cycles to 5,000." Used the Clough audio system as touted in CRCB of Nov. 1928. Covers 50 cycles to 7,000. Can use 15 foot indoor aerial, but ad says it can be used without any antenna at all! Both long wire and short wire connections on Antenna Coil. Westrad, Fall '28: Lincoln "112" Shielding Metal Cabinet, two-tone finish $5.44 ($9.25 retail). William H. Hollister (designer) wrote the book, "The Secret of the Super". Address: 329 South Wood Street, Chicago. Lincoln also sold Silver-Marshall, Tyrman, Scott, and HFL superhets out of this address. Lincoln also made available two "B" power supplies; "101B" & "101ABC", used "bone dry rectifiers" (see "1001 Radio Questions & Answers" Fall 1928 ad). Also see Hollister Model 8-80 One Spot. Identical radio except the Antenna Coil lies horzontally on the Hollister. Have a Riders schematic.

" "

" " " " " "

Lincoln 8-40 Super

September 1929

Lincoln

475

Impedance

" " "

CRCB - September 1929 - P17 - Complete

CRCB - September 1929 - P65 - Article

CRCB - September 1929 - P66

Completely redesigned with 224 screen-grid tubes. Only three stages of tuned IF due to excess oscillations with four stages. Two Push-Pull 245s. No integrated power supply. Does battery version have push-pull??? 9 tube AC version with push-pull audio amp in 1930 ^. Great explanation of impedance IF coupling in this issue Sept '29 CRCB.

Lincoln Quality

Lincoln Quality Products Company

Lincoln Quality Approved Products Superheterodyne

1926

Lincoln Quality

Small Bakelite Tuna Can

Air

Cleveland

RWI - December 4 & 18, 1926 - P?? - Construction??

RWI - January 1, 1927 - P14 - Layout ??

Used 4 Lincoln Quality air-core IFs in middle, top of baseboard with the Oscillator Coil ("Fixt Inductance") in the center. Used the SM Type 221 and 220 audio transformers on each end of the baseboard. May be same set in Silver-Marshall ad in RLG March 1927, page 20 lists this radio as using SM parts. Four potentiometer knobs spaced across the back of the baseboard. Jones-style multiplug in back center, with Magi's on top and Feldt's under baseboard. See Joe Magi's Lincoln Quality Eight. Obvious Lincoln herald on literature that matched the Magi layout. Good Pix in RWI, Jan 8, '27, P14! Also, may be same set in PR, May '27, P534, Parts, Layout, Scheme. Lincoln Quality was purchased by The Rex Laboratories, Inc. in September of 1927. See Rex Labs.

Lincoln Quality

Rex Laboratories, Inc.

Lincoln Quality "Standard of Comparison" Receiver

September 1927

n / a

Cleveland

CRCB - September 1927- Disclaimer Ad

Rex Labs of 341 The Arcade in Cleveland took over Lincoln Quality by Sept. '27. This ad in CRCB explains the use of the Lincoln Quality shield. "Standard of Comparison" Receiver mentioned in this ad. See Lincoln Quality above. Also see "Lincoln Radio Corporation" of Chicago.

" " " " "

" " " " " " "

Lincoln Quality "Standard of Comparison" Super Nine

November 1927

7 - 201A, 1 - 112, & 1 - 171

7 X 26

Lincoln Quality

Small Bakelite Tuna Can

Air

" " "

CRCB - November 1927 - P204-205 - Two Page Ad

CRCB - November 1927 - P107 - Construction

CRCB - November 1927 - P107

This nine tube super is just a modification of the eight tube set of a year earlier. Many of the physical attributes are the same. There are two potentiometers on the back of the baseboard, for example, rather than the four on the Eight. One extra IF was added to make this set a nine tuber. Five air-core IFs used under-panel in this installation. The Oscillation Coil ("Fixt Inductance") found at the far right of the basebroad, looking from behind. Acme audio transformers ("Model MA-2") recommended here. Lincoln Quality Products are owned by Rex Laboratories, Inc. at 341 The Arcade, Cleveland, Ohio.

Lincoln

Lincoln Radio REX??

Best Lincoln Nine

September 1927

7 x 24

Lincoln

Gerald M. Best

Cleveland

CRCB - September 1927 - P70 - Kit / Parts

CRCB - September 1927 - P416 - Construction

CRCB - September 1927 - P144

CRCB ad shows "Zig Zag" loop antenna. S. Hammer Radio Co offered wired with Corbett cabinet for $154.90 in Sept '27. Used Lincoln Oscillator and 5 Lincoln Intermediate transformers.

Locke

Locke Radio Shop

Sockets & Low-Loss Coils

November 1924

Victor, N. Y.

QST - December 1924 - P108 - Kit / Parts

Advertises seven socket sub-panel and coils for single or double control (dial) "Supers". QST - Nov '24 says to mount Precise Multiformer under sockets and base panel which is 6 x 20 1/2 x 3/16 bakelite panel.

Long - Remler

Long Radio Works

Model S - 8

(Likely 1925)

8 - 199

7 x 24

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

Les or George Long

Cornelius, Oregon

Remler parts. Probably built by the "Long Radio Works" by brothers Les or George Long on the family farm on Rural Route 1 (later renamed "NW Long Road"). This location was 20 miles west of Portland, Oregon or 1 mile north of the town of Cornelius, Oregon. They were in radio business from 1920 through the late 1930s. Info from Art H. Redman email (Portland 8/05): "Thanks for the pictures of the Long Superhet and Langhorne. I would of got back to you sooner but first I had to make a trip to the Mulnomah County Library to find some information. The Long Superhet looks different than most Long Battery sets than again its not a TRF. The blonde cabinet is unique. The dials appear to of the common type available dials in the late 1920s. There are no articles mentioned in the indexes of the two Portland, Oregon newspapers, the Oregonian and the Oregon Journal." See Note 28. See Remler.

Lynch

Super-Het

April 1924

(8)

Arthur H. Lynch

Shown on page 23 of the April 1924 Radio Age.

22 263

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

M. A. R. S.

Manual Arts Radio & Electric Shop

Six-Tube Super-Heterodyne

Mar-24

Los Angeles

RJ - March 1924 - P144 - Complete Assemblies

Complete sets: All parts, less tubes, plus wiring diagrams and complete instructions $70. Sam Scott, Manager

M & H

Moskowitz & Herbach

M. & H. 8-Tube Super-Heterodyne

June 1924

CB / K

UV201A or DV-2 or UV199

7 x (26)

Moskowitz & Herbach

Short Cylindrical

(Iron)

Air

Philadelphia

PR - November 1924 - P32 - Complete / Parts

Identify this set with three honeycomb coils on the front end [left rear of baseboard] and the Precision Selector [filter], a large black, horizontal Tuna Can near the audios. Used two choke coils near the Precision Selector. Superformer IF peak at 6000 meters (50 KC) for use with UV201A, C301A, DV-2, UV199, or C199. All parts are made from hard rubber. Ad in PR, Dec 1024 (X). Complete parts for 8 tube Super $96.50, Superformer $7, and Selector $10. An endorsement ad (PR, Dec '24) said he built a Super using the M & H parts "last June" (1924). $96.50. "Knockdown" and transformers still listed in RTD, Aug '25. Baseboard nearly 12 inches deep. Address was 512 Market (no longer there), Philly

Madison

Madison Radio Corporation

Ultradyne Model L-2

June 1926

n / a

Madison

Tuna Can

R. E. Lacault

" " " " "

RN - June 1926 - P1691 - Complete

Shock! Is this the same Madison of Denver's Madison Moore?? See Lacault, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

" " "

" " " " " " " " " "

Madison Multi-Chokes

January 1927

n / a

Madison

New York City

RN - February 1927 - P1053 -"Chokes"

RN - January 1927 - P824 - Construction

In RN, Jan '27, Carborundum Super Het, it indicates the use of Madison Radio Corp IFs & parts. Madison "Chokes" are used as IF transformers! Was this Harry Madison gone to NYC? See Lacault, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

" " "

" " " " " " " " " "

Madison Ultraformers For Strobodyn

September 1927

n / a

Madison

R. E. Lacault

" " " " "

RN - September 1927 - P201 - Parts

"Designed by R. E. Lacault" See "Lacault", "Phenix", "Ray-Dee-Artcraft", "R.E.L", and "Ultradyne".

Madison Ultradyne LR-4

Radio Electric Laboratories / Madison Radio Corporation

Shielded Ultradyne LR-4 Siper-Radio

November 1926

Madison (Chokes)

Tuna Can

n / a

R. E. Lacault, A.M., IRE

" " " " "

RN - November 1926 - P576 - Super Het Book

RN - January 1927 - P812 - Construction

RN - January 1927 - P813

RN - Jan '27 - P923: "Madison (Radio Corp.) Multi-chokes" for the LR-4. These can be used as the 4 IFs, although they look just like Phenix IFs as shown. RLG - Mar '27 - P177: "Hammarlund Condensers & Coils" for the LR-4. 8x24 inch panel in H-C Summer 1927, $70.95. See Lacault, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

(Madison Ultradyne Six) ^

Allen-Rogers-Madison ^

(Ultradyne Six) ^

1928

(Madison)

New York City

$139.75 ^ I believe this Ultradyne was the first set made after Lacault sold the Ultradyne to Madison of New York. Can the RE-29 (6 tubes) of April '29 be this?? See Lacault, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Madison Moore

Madison Moore Radio Corp.

Madison Moore IFs

August 1925

n / a

Madison Moore

Big Tuna Can

Air

Harry Madison

Denver

R - August 1925 - P51 - IFs Only

CRCB - March 1927 - P144 [Note 3]

"The Finest Transformer in the World!" Air-core units.

" " " " "

" " " " " " " " " "

Superheterodyne (201As)

February 19, 1926

8 - 201A

7 x 28

1 -V & 1 - MA

Madison Moore

Big Tuna Can

Air

Harry Madison

" "

CRCB - Summer ?? 1926 - P66 - IFs Only

CRCB - Summer 1926 - P67 - Construction

CRCB - Summer 1926 - P71 - Layout & Scheme

CRCB introduced this set with blueprints dated February 19, 1926. Operated at 35KC [8575 meters]. Has "Unit" numbers 1 thru 5 stamped on coil labels. Unit 1 was the Oscillator Coil. I believe there were four different labels for the IF cans which may help date the radio. The first from August 1925 to February 1926 were stamped into the metal can. The second series of labels from February 1926 to late 1926 were rivetted metal labels with the painted words "UNIT #" and a blank spot for the number to be painted on it. The third was similar to the second but a painted word "TYPE" was used and a blank spot was available for the letter & number. Lastly, from early 1927 until the shape of the IF changed in the Fall of 1927, on the 201A cans, the area that was left absent of paint before was filled in and the TYPE letter and number were both void of paint [reverse] across the bottom of the label. See picture examples. WHen the new higher frequency IFs came out in the Spring of 1927, the model numbers changed. They had been "M-1" thru "M-5". IN 1927 they became "HW1" thru "HW5". These designated them as One Spot IFs. Located at 39th and Yates. 7x28 inch panel.

" " " " "

" " " " " " " " " "

Superheterodyne (201As)

September 1926

8 - 201A

7 x 28

1 -V & 1 - MA

Madison Moore

Big Tuna Can

92.5

Air

Harry Madison

" "

Randolph Radio Catalogue - Fall 1926 - P?? - Kit

IFs used with 201As had nickel bands around the ends of the can with dark centers. Used 5 IF/Filter cans. IFs operate at 92.5 KC according to Barawik Sept '26 and Randolph, Fall '26. Different circuits for 201As than with 199s. Another small article & scheme: RN - Dec '26 - P680. Randolph, Fall '26: Kit only $62.50 Barawik: Sept '26, P20, complete, $114.60. Chicago Salvage, Nov '26, P6: $92. 7x28 inch panel.

" " " " "

" " " " " " " " " "

Superheterodyne (199s)

September 1926

8 - 199

7 x 24

1 - V

Madison Moore

Big Tuna Can

92.5

Air

Harry Madison

" "

Randolph Radio Catalogue - Fall 1926 - P?? - Kit

CRCB - September 1926 - P103 - Construction

CRCB - September 1926 - P107

IFs used with 199 tubes had all nickel cases with metal labels attached. Used 5 IF/Filter cans. Different circuit used with 199s than with the 201As. IFs operate at 92.5 KC according to Barawik Sept '26 and Randolph, Fall '26. "As specified in CRCB (but) using UX199 tubes." Component layout is slightly different than the CRCB 201A version. Randolph, Fall '26: Kit only $62.50 Barawik: Sept '26, P20, complete, $106.60. Oct '26, P20, complete: $106. 7x24 inch panel.

" " " " "

" " " " " " " " " "

New One-Spot

January 1927

Madison Moore

Big Tuna Can

490

Air

Harry Madison

" "

RB - January 1927 - Back Cover - Transformer Only

RN - December 1927 - P642 - Article

CRCB - March 1927 - P144 (Note 3)

IFs are "Type HWS". Duane Bylund discovered the IF peak at 490 KHz. IF transformers each have a bandwidth of about 30 kHz and they peak at 489 kHz, 503 kHz, 488 kHz, and 492 kHz, respectively. The filter transformer (HW-2) is physically much different than the other transformers but it has similar electrical characteristics. The gain on these transformer stages is about 1/3 of the gain of other sets I have measured (possibly due to the operation near 500 kHz with a 01-A tube – these transformers would probably work better with the type 199 tubes, or possibly even screen grid tubes). Radio News for December 1927 has scheme. By this time, their address was 2524 G Federal Boulevard. 7x26 inch panel.

" " " " "

" " " " " " " " " "

"One Spot" & "One Spot Batt'ry-less"

March 1927

Madison Moore

Big Tuna Can

490

Air

Harry Madison

" "

CRCB - September 1927 - P23 - Kit / Parts

One-Spot transformers used with batteries have Bakelite centers. RB - Mar '27 - P501 - IF only.

" " " " "

" " " " " " " " " "

AC International One Spot

September 1927

9 + 3

2 - 199, 6 - 226, 1 - 227, 1 - 280, 1 - 171, & 1 - 874

7 X 28

2 - Drum

Madison Moore

Arched Aluminum

490

Air

Harry Madison

" "

H-C Catalogue - Late Summer 1927 - P73

CRCB - November 1927 - P102 - Construction

CRCB - November 1927 - P103 - Scheme & Layout

The first two stages, used as untuned RF amps, were 199s. Used 6 - UX226s, 1 - UY227, all 1.5 volt AC tubes, and 2 - UX199s run on 1.5 volts AC, also. This set is designed for use with a specific power supply shown in the Nov 1927 CRCB. The PS schematic and layout is shown on page 105-106. It used two tubes [280 & 874] to develop the filament voltage [1.5 AC] as well as the B+ voltages. It also had an additional power audio stage that used a 171. New MM AC IFs that are flat on the bottom, arched on top, and aluminum. [The IFs for the battery set design was a special One Spot Tuna Can style.] Tyrman double-drum dial. CRCB Jan '28 has operating the International One-Spot. H-C cat. Late Summer 1927 $73.10.

Madison Moore Calcatera

Shielded Hyboy Superheterodyne

March 1927

Madison Moore

Tuna Can

Air ??

Joseph Calcaterra

New York City

RLG - March 1927 - P111 - Construction

RLG - March 1927 - P113

Unusual design. Seven knobs, two meters, and two "Visi-dials" on front panel. Used Madison-Moore "One Spot" (HW-1 to HW-5) IFs.

Magnaformer

Radiart Laboratories Co.

(Magnaformer 9-8 [D-C] ^)

1926 ^

8 or 9

Magnaformer

Tuna Can

69.73

Air

Chicago

H-C Catalogue - Late Summer 1927 - P77

$200.00 ^. No untuned, no tuned, 4 IFs, 2 Audio ^. Magnaformer means GREAT CREATOR in Latin. IFs peaked at 69.73 KC (4300 meters). H-C Catalogue, Late Summer 27, P77: "Specified in the CRCB…". Used 8 - UX201As and one 112 or 171 power tube. Used the NEW Ferranti audio transformers. $76.95 complete. 7x26 inch panel.

" " " "

" " " " " " " "

Magnaformer 9-8 All Electric [A-C]

(Spring 1927}

8 or 9

Magnaformer

Tuna Can

69.73

Air

" " "

H-C Catalogue - Late Summer 1927 - P77

Used 8 - UX227 Acs and one 112 or 171 power tube. Used external B supply & SM 325 filament transformer. $76.95 complete. 7x26 inch panel.

" " " "

" " " " " " " "

Magnaformer 9-8 Model A-8 [D-C] "Commander-In-Chief Of The Air"

September 1927

8 or 9

201A, 112, & 171

7 x 26

2 Drum

Magnaformer

Tuna Can

69.73

Air

(J. M. Douglas)

" " "

Harry Alter Catalog - October 1927 - P57 - Complete

R - September 1927 - P16 - Construction

CRCB - September 1927 - P106

Might have been developed by J. M. Douglas. Model A-8 is complete kit. Construction article by Gerald M. Best in Radio for Sept 27. Construction also in CRCB - Sept 27 - P106. Four stages of IFs. All 5 are air core. Choose either 8 or 9 tubes with a front panel switch. Used 7 - 201As, 1 - 112 in 1st audio, & 171 in last audio. Schematic and info on P642, RN, Dec. '27. PR, Sept 27, P197, ad, complete. American Radio Co, Catalog #117, Pg48, Sept 1927 (X). Also shown in PR, Oct '27, P227 with advanced information, parts list, & empty schematic in PR, Sept 27, P128. Extensive construction article. Still shown in Nov '28 Nelson Electric ad (CRCB, P149). Hammer Cat. Spr & Summer 29: Complete Kit = $129.99, Wired with Corbett cabinet = $170.50. Loop operation. 7x26 inch Formica panel.

" " " "

" " " " " " " "

Magnaformer 9-8 Model A-8 [A-C] "Commander-In-Chief Of The Air"

November 1927

8 or 9

Magnaformer

Tuna Can

69.73

Air

" " "

CRCB - November 1927 - Page 6 - "9-8" Ad

CRCB - November 1927 - P128 - Construction

CRCB - November 1927 - P128

"Commander-In-Chief Of The Air". "Great Creator of True Tone Quality". Choose either 8 or 9 tubes. 7x26 inch panel.

" " " "

" " " " " " " "

Magnaformer AC-29

January 1929

AC222, 227, 281, & 250

7 x 24

Magnaformer

Tuna Can

" " "

Barawik Catalogue - Spring & Summer 1929 - P116 - Complete

CRCB - March 1929 - P152 - [Note 14]

Used 2 - AC222, 5 - 227, 2 - 281, and 1 - 250 tube. 100% shielded. A, B, & C power built-in which is one of the first for a Super, if not the first. Barawik Cat., Sp & Summer 29, $108.72. Outside or loop antenna. Panel is 7x24. I believe they moved from Chicago to Cleveland around late 1929.

Magnaformer - Sutton

n / a

Flexible Nine-Tube Superheterodyne

February 1929

Magnaformer

Tuna Can

69.73

Air

Coleman Sutton

RN - February 1929 - P746 - Lite Construction

RN - February 1929 - P747

The article's pictures show "Magnaformer" IFs, although no brand name parts are specifically mentioned. Huge panel 7x33.5 inches!

Marathon - Ultradyne

Marathon Radio

Marathon Ultradyne L-1

April 1924

n / a

Marathon

Tuna Can

Air

N. E. Borch

San Francisco

R - April 1924 - P91 - Kit

This is a Lacault Ultradyne L-1 knock-off kit. "…parts designed and tested by N. E. Borch, internationally known radio engineer." "These sets are going like hotcakes." Input and Oscillator coils look identical to Phenix coils. Transformers are black rather than the Lacault maroon. Exactly the same ad was published in June of 1925 in Radio bu the price had gone up to $30!! Still listed in RTD, Aug '25. Interesting the address [at 858 Pacific Building in San Fran.] in the ads is the same building as Baldwin-Pacific at 441 Pacific Building. See Phenix Ultradyne L-1.

Master

Master Radio Supply Company

Master Intermediate Frequency Module

January 31, 1925

K / P

n / a

Master Radio Supply Co

Rectangular Module

Air

Chicago

Everybody's Radio Weekly [ERW] January 31, 1925 - P2 - Full Page Ad

Large rectangular block: “Tuned Air Core Long Wave R. F. Transformer Unit. Has a filter and three IFs. “Tuned (not matched) to the same frequency…”. Hermetrically sealed. “The Heart of the Master Super-Heterodyne”. “Make the Master Your Servant and Master the Air”. 16 terminals on top of the box. One on the side. Used in the Sat., Jan 31, 1925 “Everybody’s Radio Weekly” [ERW]. $30.00. Master Oscillator Coil is a tall coil with 1 one large winding, 1 medium winding, & 1 small winding. What appears to be a choke is called a resistor and is made specially by Master. It’s part number 10. Number 11 looks the same. Both under the panel. Used 3 foot loop. Has engraved and drilled panel and sub-panel. Appears to be a 7X30 inch panel.

" "

Master Radio Supply Company

Master Super-Heterodyne

January 31, 1925

8 - 201A

(7 x 30)

Master Radio Supply Co

Rectangular Module

Air

Chicago

Everybody's Radio Weekly [ERW] January 31, 1925 - P3 - Lite Construction

Everybody's Radio Weekly [ERW] January 31, 1925 - P4 - Scheme & Layout

Large rectangular block: “Tuned Air Core Long Wave R. F. Transformer Unit. Has a filter and three IFs. “Tuned (not matched) to the same frequency…”. Hermetrically sealed. “The Heart of the Master Super-Heterodyne”. “Make the Master Your Servant and Master the Air”. 16 terminals on top of the box. One on the side. Used in the Sat., Jan 31, 1925 “Everybody’s Radio Weekly”. $30.00. Master Oscillator Coil is a tall coil with 1 one large winding, 1 medium winding, & 1 small winding. What appears to be a choke is called a resistor and is made specially by Master. It’s part number 10. Number 11 looks the same. Both under the panel. Used 3 foot loop. Has engraved and drilled panel and sub-panel. Appears to be a 7X30 inch panel.

Maxum

Maxum Electric Company

Maxum Long Wave Transformer

Fall 1924

Maxum

Philadelphia

CRCB - Fall 1924 - P177 - Parts

"Type 1001 - 100 KC Air Core Interstage", "Type 1012 - 100 KC Filter Transformer", "Type 501 - 50 KC Iron Core Interstage", and Type 512 - 50 KC Filter Transformer". Maxum was "Successors to Fairmount Electric". Transformers still listed in RTD, Aug '25.

Mayo

Superheterodyne

July 1923

R. R. Mayo

Just a picture of Mayo and set. No other info known.

McCullah

Efficient Super-Heterodyne

April 1924

10 - 201A

(7 x 30)

(4)

n / a

Duo-Lateral Coils

Air

Arthur B. McCullah

RA - April 1924 - P5 - Construction

RA - April 1924 - P8

IFs are Duo-Lateral [honeycomb] coils = L100 & L400 . Has four stages of IF, thus ten tubes. Built in three sections but one cabinet. Used Push-Pull audio amp. Improved schematic shown in Radio Age, June 1924, page 44. (X) See immediately below.

" " "

Efficient Super-Heterodyne Improved

PNF

June 1924

9 [or 10]

9 [or 10] - 201A

(7 x 30)

(4)

n / a

Duo-Lateral Coils & Variable Caps

Air

Arthur B. McCullah

RA - June 1924 - P44 - Scheme

IFs are Duo-Lateral [honeycomb] coils = L100 & L400 with the latter bridged by .0005 variable cap. This variable condenser tuned across IF secondary coil on each IF stage. Built in three sections but one cabinet. Used Push-Pull audio amp. Says another stage of radio can be added, making four IF stages; 9 or 10 total tubes. Changes from first schematic: The IF's variable condensers are a June improvement. Change in the connection of the oscillator condenser. The rotary plates of the variable condensers are connected to the filament to off-set hand capacitance. First detector's plate has the same potential as its grid. Pencil Mark Grid Leak [PMGL] used in grid of second detector. Other changes not listed here.

" " "

Sure Shot Super-Het

February 1925

9 - 199 & 201A

(7 X 30)

n / a

Duo-Lateral Coils & Variable Caps

Air

Arthur B. McCullah

RA - February 1925 - P9 - Construction

RA - February 1925 - P10

The six honeycomb coils, which make up the IFS, are connected to three variable capacitors with dials at the back of the baseboard. The Tropodyne concept is similar to this. The whole radio is breadboarded with two front panels of different sizes. Used 7 - 199s and 2 -201As (audio out). The baseboard appears to be about 12x30 inches.

McDonald

W. E. Fuetterer S. & S. Co.

McDonald Superheterodyne

(1924)

(M)

8 - 201A

8 x 36

NIF

McDonald

Tall Cylindrical

NIF

George W. Van Sickle

St. Louis

At first glance, this appears to be a Receptrad, but it is a McDonald. On each IF, it says "Distributed by W. E. Fuetterer S. & S. Co.". Has four similar looking McDonald cylindrical IFs & filter. Used white porcelain based tube sockets. Has seven Pacent rheostats across the front panel. Taken from the eBay description: "This radio was distributed by Van-Ashe Radio Co., 208-10 North 10th St. St. Louis, MO. It was designed by George W. Van Sickle, Radio Engineer. This unit featured Haynes-Griffin IF, Input Oscillator Transformer Components. The IF is 30 KHz." "It has 2 Faradon UC 487 capacitors. It has Dubilier Mica Capacitors patented July 6th 1920. It has 2 Remler gear driven tuning capacitors." "I have a partial schematic & detailed description of operation of the radio that was in an advertisment in a St. Louis newspaper. But this paper is in very poor condition." Because of the newspaper ad, it might have been distributed by Van-Ash after the labels were put on the IFs. It is 36" wide, 10" deep, & 9 3/4" tall. Sold 0205 on eBay for $307.

McGown Radio Laboratory

Best's 115 K. C. Super Parts

February 1928

" " " " "

R - February 1928 - P12 - Complete / Parts

"D. B. McGown, Radio Laboratorian" took over "Radio" magazine's lab and appears to be the sales vehicle for Best's radios and others.

Melo-Heald

Robertson-Davis Co., Inc.

Melo-Heald Eleven

November 1926

10 - 201A & 1 - 112

7 x 28

1 -V & 1 - MA

Melo-Heald

Cylindrical

125

Air

Merwyn Heald

Chicago

American Radio Co.- Catalogue #117 September 1927 - P40 - Kit / Parts

CRCB - March 1927 - P114 - Construction

CRCB - March 1927 - P116

Used ten 201As and one 112. No oscillator repeats. "...real single point reception". Transformers: Eight Melo Coupler Intermediates, three Multi-stage Meloformer Audios, and one Melo Choke. Meloformer audio transformers introduced (likely August 1925) ?? at Chicago's Third Annual Radio Show [RWI, Feb 26, '26, P29 ad]. Lite construction: RWI, Ap 16 & 23, '27, P?? & P6 (layout). RWI, July 30, '27, P??: "How to shield". Meloformer audios were introduced in late 1924. See Robertson-Davis Co., Inc.below.

" " " "

" " " " " " " "

Melo Heald Hot Spot Fourteen

September 1927

8 - 199, 5 - 201A, & 1 - 171

7 x 30

1 -V & 1 - MA

Melo-Heald

Cylindrical

125

Air

Merwyn Heald

" " "

American Radio Co. - Catalogue #117 September 1927 - Pg49 - Kit / Parts

CRCB - September 1927 - P121 - Construction

CRCB - September 1927 - P121

Used eight 199s and six 201As. No oscillator repeats. "...real single point reception". Transformers: Eleven Melo Coupler Intermediates, three Multi-stage Meloformer Audios, and one Melo Choke. Used 8 - UX199, 5 UX201a, and 1 UX171. Hot Spot means "One Spot". RWI, Ap 16 & 23, 1927 lite construction series. Listed as "King of the Magic Air" in Sept '27 ad. Another ad in CRCB, Sept '27, P81, Kit / Parts. H-C cat, Late Summer '27 $87.90. S. Hammer Radio Co. offered a completely wired set with Corbett cabinet for $199.75 in Sept '27 [P5].

29 292

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Mercury

H. M. Kipp Co.Limited

Standard Ten

(1926)

10 - Northern Electric R215A "Peanut"

(6.75 x 18)

Mercury

(Wooden Module)

NIF

(Air)

Lowry

Toronto, Canada

Mercury Catalogue - eBay Pix - Ca 1926

Earliest sets in 1927 had two typical numbered dials. Used the Northern Electric R215A "Peanut" tube, which is the same as the Western Electric 215A. Uses 4 stages of IF (not typical) and 3 stages of audio, which leaves 1 oscillator, and 2 detector stages. Used wooden module under bakelite baseboard similar to the RCA catacomb but with separate tube sockets. Shown in a 'Deluxe Jewel Box" solid walnut cabinet. This set looks more like the later models. Very different from the "Scout". Used a series-parallel filament circuit for the 1.1 volt tubes on a 6 volt source

" " "

H. M. Kipp Co.Limited

Scout

(1926)

10 - Northern Electric R215A "Peanut"

(6.75 x 18)

Mercury

(Wooden Module)

NIF

(Air)

Lowry

" " " " " "

Mercury Catalogue - eBay Pix - Ca 1926

Used simple rectangular cabinet with no frills. Front panel engraving very different forn the "Standard" model.

" " "

" " " " " " "

Mercury Super Ten Kit

1927

10 - Northern Electric R215A "Peanut"

6.75 x 18

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Story of the Mercury Flier - Dated 1927

AWA OTB - December 1985 - P19 - Basic Scheme

Complete kit only. Had no cabinet nor tubes. $ 120 with connecting cable & plug. Earliest sets into 1927 had two typical numbered dials. Used the Northern Electric R215A "Peanut" tube [$3], which is the same as the Western Electric 215A. Uses 4 stages of IF (not typical) and 3 stages of audio, which leaves 1 oscillator, and 2 detector stages. Used wooden module under bakelite baseboard similar to the RCA catacomb but with separate tube sockets. Mercury History brochure says the 1927 model had "detachable tuning coils" [plug-ins] at each end of the baseboard so they might be changed when later development comes on lower waves, but delivered for the "present WAVE BAND" only. Other coil sets were expected later. But that same catalogue offered coils up to 2000 meteres for $8 per pair. Most chassis had variable capacitors surrounded in clear bakelite to keep dust out, but not all. Used a series-parallel filament circuit for the 1.1 volt tubes on a 6 volt source. Set is just 7 inches deep.

" " "

" " " " " " "

Mercury Super Ten with De Luxe Renaissance Cabinet

1927

10 - Northern Electric R215A "Peanut"

6.75 x 18

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Story of the Mercury Flier - Dated 1927

AWA OTB - December 1985 - P19 - Basic Scheme

"Completely assembled with De Luxe cabinet, less tubes...$180". This was the Renaissance style cabinet, solid walnut Duco finish [$30]. See Mercury description immediately above.

" " "

" " " " " " "

Mercury Super Ten with Model "D" Cabinet

1927

10 - Northern Electric R215A "Peanut"

6.75 x 18

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Story of the Mercury Flier - Dated 1927

AWA OTB - December 1985 - P19 - Basic Scheme

"Completely assembled with Model 'D' cabinet, less tubes...$165". This was the Model "D" style cabinet, walnut Duco finish [$15]. See Mercury description immediately above.

" " "

" " " " " " "

Mercury Super Ten Model H Cabinet

December 1928

M / CK

10 - Northern Electric R215A "Peanut"

Partial Decorative Wood 6.75 x 18

1 - Drum

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Mercury Flier - Dated December 1928

AWA OTB - December 1985 - P19 - Basic Scheme

Two different models of radio panels and two different cabinets.All "two control" sets show Klipish dials. Used the Northern Electric R215A "Peanut" tube, which is the same as the Western Electric 215A. Uses 4 stages of IF (not typical) and 3 stages of audio, which leaves 1 oscillator, and 2 detector stages. Used wooden module under bakelite baseboard similar to the RCA catacomb but with separate tube sockets. Mercury History brochure says the 1927 model had "detachable tuning coils" [plug-ins] at each end of the baseboard so they might be changed when later development comes on lower waves, but delivered for the "present WAVE BAND" only. Other coil sets were available later. Model styles from December 1928 catalogue. Used a series-parallel filament circuit for the 1.1 volt tubes on a 6 volt source. "H" cabinet similar to the "D" with a flat bottom and a circular medallion at center of the end posts. As of Dec 1928, address: 447 Yonge Street. Front panel engraved. Set is just 7 inches deep.

" " "

" " " " " " "

Mercury Super Ten Model H Cabinet Two-Dial Control

December 1928

M / CK

10 - Northern Electric R215A "Peanut"

6.75 x 18

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Mercury Flier - Dated December 1928

AWA OTB - December 1985 - P19 - Basic Scheme

"H" cabinet similar to the "D" with a flat bottom and a circular medallion at center of the end posts. See Mercury description immediately above.

" " "

" " " " " " "

Mercury Super Ten DeLuxe Cabinet

December 1928

M / CK

10 - Northern Electric R215A "Peanut"

Partial Decorative Wood 6.75 x 18

1 - Drum

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Mercury Flier - Dated December 1928

AWA OTB - December 1985 - P19 - Basic Scheme

See Mercury description immediately above.

" " " " " " "

Mercury Super Ten DeLuxe Cabinet Two-Dial Control

December 1928

M / CK

10 - Northern Electric R215A "Peanut"

6.75 x 18

Mercury

Wooden Module

NIF

(Air)

Lowry

" " " " " "

Mercury Flier - Dated December 1928

AWA OTB - December 1985 - P19 - Basic Scheme

See Mercury description immediately above.

" " "

" " " " " " "

Mercury Super Ten Electric Single Control Without Reproducer

PNF

December 1928

(M)

(10)

Northern Electric R215A "Peanut"

NIF

Mercury

(Wooden Module)

NIF

(Air)

Lowry

" " " " " "

No information found.

" " "

" " " " " " "

Mercury Super Ten Electric Two Control

PNF

December 1928

(M)

(10)

Northern Electric R215A "Peanut"

NIF

Mercury

(Wooden Module)

NIF

(Air)

Lowry

" " " " " "

No information found.

Metaform

Metaform System Receiver

July 1924

Walt S. Thompson, Jr.

RWI - June 21 & 28, 1924 - P?? - Construction

RWI - June 21 & 28, 1924 - P??

The first "one-spot" superhet RWI described in its pages. Frequency changer uses just one tube. I believe the IF is 100 meters...2998 KC. RWI - July 26, '24 - P6 - Followup Theory: "The Metaform Receiver has some advantages over the Neutrodyne and the Super-Heterodyne. First, greater amplification...per stage of RF because the RF amplifier, used with th frequency changer, amplifies signals of only one frequency" and, therefore, doesn't have to amplify all others. It has a "sum-frequency" like the Remler Infradyne and a few others. The others have "difference-frequency" mixer. Most work on the lower "difference" as the "sum" results in a higher output from heterodyne process; thus; more accurately, a one-spot. RWI - July 26, '24, "Another advanage in common with the Super-Heterodyne is the simplified control in tuning." Any number of tuned radio frequency stages still result in only two tuning controls." Thompson was a senior at Lehigh University when he developed this set. Did he go on to develop others and create a Thompson radio company?? This information taken from the July 7. 1928 RWI issue, p3. See "Thompson" below.

Microdyne

Apex Electric Mfg. Co.

Microdyne

November 1924

M / KD

7 - 201A

7 x 18

Apex

Short Cylindrical

NIF

Air

(E. K. Oxner)

Chicago

QST - December 1924 - Complete

RN - Nov 1924. RB - Nov 1924. PR - Jan 1925 - P88 - Ads. Advertising gone by April 1925, but Lakeside and Microdyne references through Fall 1927 ?? Used IFs & choke coil. Used only two IFs. Microdyne "story" in Radio Age Dec '24, P64. Says "$160 complete" wired (??) and "$97.50 in knockdown form"! Apparently, as soon as the Luetz trial ended, these were only offered as a complete kit. It appears the Lakeside firm built up the kits. Promoted thru Feb '26 - PR "What's New??". Called a "knockdown" in RTD, Aug '25. See Lakeside Supply Co. Also, see "Stephen". The Microdyne bakelite IF case was used to house the Hammarlund RF choke in Sept '27. Apex advertised in 1922 in RN. Address 1410 West 59th St. in RTD, Feb '25. Front panel drilled & etched. See Stephen and Lakeside.

Modern

Modern Electric Mfg. Co.

Modern 30 K. C. Long Wave Transformer

October 1924

n / a

Modern

Misc

Toledo, Ohio

CRCB - Fall 1924 - P185 - IF Only

PR, Oct '24, P90, Ad: "Use in Superheterodyne and Ultraformer…" Not listed in March 1927 I.R.E. transformer ad, pages XX-XXI.

Mutual Radio

Mutual Radio Company

Model L - Long Box

(1925)

6 - 199

7 x 18

Wellesely, Mass

Brochure

Brochure says six tube reflexed set. Clone of RCA set? The loop antenna in the brochure looks identical to the RCA loop! Use 199 tubes. Dials look like Apex. In fact, panel looks a lot like the Apex Microdyne. Definitely manufactured. Price $140 less batteries and tubes. Solid mahogany cabinet with room for batteries.

" " " " "

" " " " " " " "

Model P - Portable

(1925)

6 - 199

7 x 18

" " " " "

Brochure

Brochure says six tube reflexed set. Clone of RCA set? The loop antenna in the brochure looks identical to the RCA loop! Use 199 tubes. Dials look like Apex. In fact, panel looks a lot like the Apex Microdyne. Definitely manufactured. Price $175 less batteries and tubes. Solid mahogany cabinet. Portable. Forty-nine pounds.

" " " " "

" " " " " " " "

Model S - Short Box

(1925)

6 - 199

7 x 18

" " " " "

Brochure

Brochure says six tube reflexed set. Clone of RCA set? The loop antenna in the brochure looks identical to the RCA loop! Use 199 tubes. Dials look like Apex. In fact, panel looks a lot like the Apex Microdyne. Definitely manufactured. Solid mahogany cabinet. Price $115 less batteries and tubes. Smallest box.

16 308

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

N. E. T. & T. CO.

Super-Heterodyne Radio Receiver

December 4, 1923

BP / K

6 / 7

6 - 201A

12 x 24

1 -V

N.E.T. & T. CO.

Tall Rectangular

NIF

Engineering Department

Boston

From eBay seller: "I can read the following on three of the transformers "NO 83-A RET OIL". I suppose they may be oil filled? I have original blueprints that go with the auction that say "Super-Heterodyne Radio Reciever N.E.T. & T. CO. Engineering Dept, Boston Dec. 4 1923" The blueprints show "83-A RET" for the first 3 transformers and 222-A INP TRANS for the 4th. The blueprints do not match this radio exactly, as it is a 6-tube set, and other minor differences. The front panel measures 24” wide by about 12” high, and the inside cabinet is 7.5” deep. Inside cabinet and removable lid is lined with sheet copper. There are a couple of extra holes in the panel; I don’t think there was anything ever mounted in them because the sheet copper is visible through the holes. Someone might be able to add a jack or switch in those extra holes and make it look nicer. The meter is not the correct meter." This set was found in Utah where it was auctioned on eBay 8/2007.

New Jersey Radio Supply

New Jersey Radio Supply Company

Super-Heterodyne 8-Tube Deluxe

May 1924

Newark, N. J.

PR - May 1924 - P62 - Complete

Great ad. Set looks like a Leutz C. "The last word in radio reception." "Price complete $125 F.O.B. Newark, N. J." "Cabinet 8x40 inches."

New York Coil

New York Coil Co.

Super Heterodyne Parts

May 1924

New York Coil Co.

100

Air

New York City

PR - June - P34 - IF & Oscillator Coil

R, May 24: Oscillator Coupler, air core transformers, & input transformer, all $4 each. PR, June 24: "R. K. Type 3000 meters". Tiny IFs only 1 1/4 inches tall and only slightly larger in diameter. Oscillator coil is 180 degree, 3 3/4 x 3 inches, double silk, 6 Fahnstock terminals. Radio_Sept 1924: "Kit (aircore): Oscillator coil, input, 3 matched IFs". See Note 27. Full ad in Radio, June 1924. Pg 79. Still promoted in "What's New" PR - July 1926.

" " " " "

" " " " " "

Super Heterodyne Kit

June 1924

New York Coil Co.

" "

" " " " "

RB - September 1924 - P3 - Kit

Radio, June 1924, headlines "Super Heterodyne Parts". Sept '24: "Our Super Heterodyne Kit at $20.00, consisting of osc coupler, Input, and three MATCHED intermediate AIR-CORE transformers, makes up the best set known to date".

Nolte

Nolte Manufacturing Company

Radio Frequency Coil

June 1926

n / a

Jersey City, N. J.

RN - June 1926 - P1673 - "New Products"

??? Splurb says "…found to cover the entire wave-length range." Could it have been used as an IF???

Northern Electric

Northern Electric Co., Limited (of Canada)

4-B

(January 1924)

Northern Electric Co., Limited (of Canada)

Canada

Manufactured

Leutz [Note 7]

IS THIS A WESTERN ELECTRIC AND NOT NORTHERN ELECTRIC?? Has two IF stages (Note 7 - P79). Designed to use the WE215 "Peanut Tube" - Filaments in series - Volume limited by these tubes. Output is fed to the WE Power Amplifier (14A or 10A) for better volume. Design for both antenna & loop operation. "It is believed that their receiver is known as a double detection system and is constructed on the Hammond patents. Their receivers are only sold for commercial purposes and are not available for amateur purposes (from "Modern Radio Reception", P79)."

" " " " " "

" " " " " " " " " " " " " "

R-4 Superheterodyne

August 1924

Northern Electric Co., Limited (of Canada)

Metal

" " "

Manufactured

AWA Review, Vol 13 - 2000, P19

For all NE, see article from Robert P. Murray, AWA Review, Vol 13 - 2000, P7-38. Used R215A tubes. $205.00

" " " " " "

" " " " " " " " " " " " " "

R-4-L Superheterodyne

1926

Northern Electric Co., Limited (of Canada)

Metal

" " "

" " " " " " "

Used 6-R215As and 1-R221DX.

Northern Electric / Victor

" " " " " " " " " " " " " "

R-40 Superheterodyne

1926

Northern Electric Co., Limited (of Canada)

Metal

" " "

" " " " " " "

225

" " " " " " " "

" " " " " " " " " " " " " "

R-41 Superheterodyne

1926

Northern Electric Co., Limited (of Canada)

Metal

" " "

" " " " " " "

260

" " " " " "

" " " " " " " " " " " " " "

Filter Transformer

February 1926

n / a

Northern Electric Co., Limited (of Canada)

" " "

Radio - April 1926 - P45 - Part

Sold thru "Army Sales Company" of San Francisco.

Nutron

Nutron Manufacturing Company

Nutron No "B" Battery [Solodyne] Super-Heterodyne

October 1924

Passaic, New Jersey

RN - November 1924 - P728 - Parts & Scheme

Nutron sells a "double-grid" [4 elements] tube, the "Solodyne", that acts as an oscillator and modulator in a single tube. Supplies scheme and matched set of "Silben Spot" single-grid tubes, set of 6 is $24.00. The Solodyne double-grid tube Used no B battery and was introduced August 1924 in RN on P233 is $6.00. PR, Oct '24, P124, ad

O' Connor Frequency Changer

A. O' Connor & Company

Frequency-Changer [Unit]

January 1925

201A

7 x 14

2 + Tap Switch

L or W

Eastern Coil Co.

Self-supporting Coil Is Eight Sided

500

n/a

A. O' Connor

NPF

Cleveland

RB - Jnauary 1925 - Complete Parts

RB - June / August 1925 - P254 & P516

RB - June / August 1925 - P256 / P520

One of the earliest to use such a high IF, 600 meters/500 KHz! This frequency-changer couples into the antenna circuit of a separate TRF, Neutrodyne, or a Single-Circuit "blooper" receiver. RB, Aug 1925: "The object in using 600 meters is to place the intermediate-frequency amplifiers above the broadcasting wavelength bands to avoid interference." See Eastern Coil Company above for main coil. RB June 1925 has construction of Freq Changer (Part 1). Aug '25 issue of RB (Part 2) shows how to use the "Frequency Changer" with ordinary TRFs. Schematics are shown for coils to hook up TRFs, etc. Care must be taken to not short-circuit the 45 volt B+. Could be used with long wire antenna and the tap switch on the front panel. Terminhal posts are available for a two wire loop antenna as well. Radio Review, Nov '25, P9: Five page construction article with schematic. Barawik for Fall '25 (P21): Marvelo parts, $ 29.95. RB-Mar '26: "Complete parts /engraved panel $37.50". The O'Connor & Company promoted "Super-Heterodyne Headquarters Since 1923.". Address: 9702 Euclid Avenue, Cleveland.

" " " " " " " " " "

" " " " " " " " "

Two-Tube Super-Heterodyne

August 1925

Eastern Coil Co.

" " "

RB - August 1925 - P519

Made by adding the single tube "Frequency-Changer" to a single-circuit ticker feedback receiver.

Palmar

Palmar Products

Palmar Long Wave Amplifier

February 1925

5 [module]

Palmar Products

Leutz [Note 7] - P72

Leutz [Note 7] - P74

"Two stages of long wave amplification, detector, and two audio frequency amplification." Just add a Second Harmonic Osc. or Osc. / Antenna Input tubes. Unit is 17 3/4 x 3 x 3 inches.

Paramount

Paramount Radio Corporation

Paramount Super Heterodyne Kit

PNF

February 1925

NIF

Paramount

NIF

PNF

NIF

Newark, New Jersey

Radio Trade Directory (RTD) - February 1925 -P8 - Kit

""Far superior to anything on the market." Address: 23 Central Avenue. Only reference found in the radio trad Directory, Feb 1925.

Parker

De luxe Super-Heterodyne

April 1925

American Radio Mfg. Catalogue - April 1925 - P13 - Complete

"Designed & intended to be used with UV-199s. List $175. With FREE loop, $91.50." Catalogue Vol. E. No. 37. Kansas City.

Pearne

Superheterodyne

March 1924

Frank D. Pearne

RA - March 1924 - P5 - Construction

RA - March 1924 - P5

Used variometer after first stage before the oscillator coil. Correction to schematic [Osc.] in RA, May '24, P45.

" "

Superheterodyne

PNF

June 1924

PNF

100

Frank D. Pearne

RA - April 1924 - P5 - Construction

RA - April 1924 - P6

Called the Superhetereodyne, "The King of them All'! Used the typical Hartley oscillator circuit.

Perfection

Perfection Radio Mfg. Co.

Superheterodyne

March 1925

Philadelphia

RB - March 1925 - P1006 - Parts

"Antenna coupler and Oscillator coil" only.

Pfaff

Improved Laboratory Superheterodyne

Summer 1926

Silver Marshall

Ernest R. Pfaff

RN - Note 21

Used plug-in inductances, oscillator connected through the 1st detector, and shielding. Looks like Silver Marshall IFs at 60 KC. 7x24 panel.

Pfanstiehl Radio Co.

Universal Oscillator Unit P-600

December 1924

n / a

30 to 150

Highland Park, Ill.

RA - December 1924 - P62 - Osc. Coil Only

"For any Super Heterodyne". For 2000 to 10000 meters. $6

Phenix - Ultradyne

Phenix Radio Corporation

Ultradyne Super-Heterodyne

February 1924

Hand-Wound

Misc

115

Air

R. E. Lacault, A.M., IRE

New York City

RN - February1924 - P1058 - Construction

RN - February1924 - P1058 ??

[I designate this the Model "L - 0".] This is the ORIGINAL Ultradyne dated Feb. 1924. Lacault brought in many stations from over 1,000 miles distant, using a 3" coil with 72 turns in the secondary, but "NO antenna, loop, or ground" was attached. Shown in the 1926 "RN Superheterodyne Book", it has 6 tubes and no audio stages. A 2-stage amp was presented in a second article in RN (date unknown). Schematic in this publication shows a long wire antenna and ground as is the December 1924 schematic. Mar '25, Radio Broadcast, tells how to add a loop to this set. Because the company had not been formed yet (June '25 as you noted), this was an instruction for a homebrew Ultradyne. RN Superheterodyne book tells how to wind the coils & IFs.. Webb, "100 HookUps" book (Note 23 - Dec 1924- 3rd Ed. - Page 55) says IFs at 2600 meters/115KC. The pictures in the article in this publication, however, do show what appears to be a set of bakelite "tuna cans' that look an awfully lot like the ones sold by Phenix later! Lacault called the method of heterodyning the "Modulation" method, where the modulator tube has no direct "B" battery on the plate. He also called it the "Metropolitean Method" (Radio Topics, May 1924, p11). RN, Feb '24, P1058, Construction & Scheme. Mar '25, RB, (P907) tells how to ad a loop to this set. The set in the 1926 "RN Superheterodyne Book" (See Note 21) has 6 tubes and no audio stages. A 2-stage amp was presented in a second article in RN (date unknown). Recommends UV201As and a 216A or "E" tube (VT2) for the oscillator. Lacault was amateur in 1911. During WWI, was in French Signal Corps as apparatus designer. Worked later on transmission of pix by wire. Lured to America around 1920. Gernsback liked him and made him technical editor over others who had been with Radio News longer. Left RN when he introduced the Ultradyne thru RN in 1924. Phenix Radio went bankrupt by the end of July, 1926. Started Radio Electric Laboratories [REL] immediately after Phenix was out. See Lacault, Madison, Ray-Dee-Artcraft, Radio Electric Laboratories (R.E.L), Strobodyne, and Ultradyne. Also see Marathon and Sypher Mfg. Thanks David Willenborg for his help with Lacault. 7x24 inch.

Phenix - Ultradyne L-1 (Six tube)

" " " " " " " " "

Ultradyne, The Improved Super-Heterodyne L-1

March 1924

7 x 24

Phenix Radio

Tuna Can

115

R. E. Lacault, A.M., IRE

" " " " "

RN - March 1924 - P1367 - IFs / Book

How to Build and Operate theUltradyne L-1 R. E. Lacault - Construction Booklet

How to Build and Operate theUltradyne L-1 R. E. Lacault - Construction Booklet - P11 & Layout P16

[I designate this the Model "L-dot5".] Thirty-two page book available: "How to build and operate the Ultradyne (L-1)." (X). No untuned, no tuned, 2 IFs, 2 Audio ^. Kit: $24.50 ^. No "REL" branding symbol in August '24 RN. Recommends UV201As and / or a 216A or "E" tube (VT2) for the oscillator. UV199s or WD11s/WD12s also. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, and Ultradyne. Also see Columbia - Ultradyne, Marathon - Ultradyne, Real Equity Shop - Ultradyne, and Strobodyne.

Phenix Ultradyne L-1 - Seven Tube

n / a

Real Super-Heterodyne

May 1924

7 x 30

Phenix Radio

Tuna Can

115

Air

R. E. Lacault, A.M., IRE

W. F. Kuster

Chicago

Radio Topics - May 1924 - P11 - Construction

Radio Topics - May 1924 - P11 - Scheme

Illustrates the RF Pickup and Oscillator coil construction with the schematic of a seven tube version; ie, one less audio tube. Used an RF choke that was not in the original Lacault scheme. Does not recommend any specific IF transformer manufacturer, but mentions Lacault in the article, implying his IFs are available. Kuster was the President of the Radio Instrument Company of Chicago. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Phenix - Ultradyne L-1 Eight Tube

" " " " " " " " "

Ultradyne, The Improved Super-Heterodyne L-1

March 1924

7 x 30

" " "

Tuna Can

115

R. E. Lacault, A.M., IRE

New York City

RN - March 1924 - P1367 - IFs / Book

RA - October 1924 - P18 - Lite Construction

RA - October 1924 - P19 - Layout

"The Standard of Comparison". Thirty-two page book available: "How to build and operate the Ultradyne (L-1)." No untuned, no tuned, 2 IFs, 2 Audio ^. Kit: $24.50 ^. No "REL" branding symbol in August '24 RN. Very informative ad in PR, Dec 1924. Good Ad RA Oct 1924-P47(X). Good article in RA, Oct '24 page 18. Lasted through Oct '24, RB, P523. Still listed in Randolph, Fall '25, P23: Complete $45.85. Recommends UV201As and / or a 216A or "E" tube (VT2) for the oscillator. UV199s or WD11s/WD12s also. RWI, Aug 30, '24, Article. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Phenix - Ultradyne L-2

" " " " " " " " "

Ultradyne L-2

November 1924

" " "

Tuna Can

115

R. E. Lacault, A.M., IRE

" " " " "

PR - November 1924 - P20 & 21 - Kit / Book

RA - January 1925 - P72 - Lite Construction

RN - January 1925 - P1189

Lite construction: CRCB, Spring 1925 (6-1), P45. Lite construction: RWI, July 10, '26, P?? (Radio University columns). Thirty-two page book available: "How to build and operate the Ultradyne (L-2)." "Modulation plus regeneration."(X) Also see Note 21. No untuned, no tuned, 2 IFs, 2 Audio ^. Kit: $30.00 ^. Type "B" Ultraformers are air-core. Large 2-page L-2 ad in RB, Nov '24! RA, Jan 25, P72: One page article on L-2. RR, May 25, P65: Article on L-2 with scheme having no values. However, there is a parts list. Small L-2 ad in RA, Nov '24, P71. RR, May '25 has lite construction. Fall '25, Randolph ad (P28): $26.50 kit only. RWI, Nov 14, 1925, Lite construction article with scheme on page 11. 7x30 inch panel. Madison Radio [New York City] bought out Phenix by June 1926. See Madison Radio Corp. Still promoted in "What's New" PR - July 1926. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Phenix - Ultradyne L-2 AC

n / a

Electric Ultradyne L-2 (Modified for A-C)

December 1928

" " "

Tuna Can

115

R. E. Lacault, A.M., IRE

" " " " "

R - December 1924 - Kit / Book

RN - December 1928 - P568

Short article in RN - Dec '28 as to how to make the Ultradyne L-2 an A-C circuit. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Phenix Radio - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Phenix Radio

Tuna Can

115

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. See Lacault, Madison, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne. Super small: 7 1/2 pounds sans batteries.

Pink-A-Tone

Pinkerton Radio Corporation

Pink-A-Tone 150 K. C.

October 1924

Pink-A-Tone

Cylindrical

150

Benjamin (?) Meissner

New York City

PR - November 1924 - P27 - Kit / Parts / Complete set

No "repeats"; one spot with 150 KC IFs. Famous for "Life-sized Blue Prints / Layout". "Super-Heterodyne exclusively". $32.50 for basic kit. RB - October 1924- P535ish - Parts / Kit / Complete. $80. Still promoted in "What's New" PR - July 1926.

Popular Mechanics (magazine)

Nine Tube Resistance Coupled 1926 Super

January 1926

Remler

Cylindrical

Iron

Air

" " "

Barawik Co. Catalogue - "New 1926" - P19 - Complete

(PM - January 1926 - P133 - Construction)

From the January 1926 Popular Mechanics magazine. This radio is NOT the same as the February 1925 version. "New 1926" Barawik: $89.50

" " " " " " "

Eight Tube Resistance Coupled 1927 Super

Fall 1926

Daven

" " "

Randolph. Catalogue - "New 1927" - P?? - Complete

(PM - ?? 1926 - P?? - Construction)

(PM - ?? 1926 - P??)

Used Daven 3 -Stage "Super Amplifier" Resistance Coupled unit for IF. "New 1926" Randolph: $93.00 7x30 inch panel.

" " " " " " "

New 1927 Super

October 1926

Silver Marshall

" " "

Barawik Co. Catalogue - October 1926 - P29 - Complete

Used Silver Marshall parts including the "211 air-core IFs" tuned to "40 to 50 KC". 7X30 inch panel. Barawik $93.00

" " " " " " "

Economy Nine

March 1927

Remler

" " "

Don Patterson has one. Remler parts.

" " " " " " "

1928 Economy Nine

November 1927

Silver Marshall

Misc

Resistance Coupled

" " "

H-C Catalogue - Late Summer 1927 - P62

(Popular Mechanics - November - P??)

Aluminum shield box around oscillator. Used two Remler variable caps, one SM110A coil, one SM 211 Filter Transformer, one SM 240 Audio, five double resistor mounts, and a bunch of Sangamo or Tobe capacitiors & resistors. H-C cat, Late Summer 1927 $37.50. American Radio Co, Catalog #117, Pg41, Sept 1927, $38.16 (X). 7x26 inch panel.

Popular Radio (magazine)

Resistance-Coupled Superheterodyne Using Honeycomb Coils

June 1923

PR - June 1923 - P468 - Brief Information

PR - June 1923 - P468

Schematic and vague parts list. Used six Honeycomb Coils at front-end. Brief instruction as to how to tune-up the set.

" " " " " " " " "

(Simplified Super-Heterodyne)

November 1924

[7]

(PR - Nov & Dec 1924 - P?? & P?? - Construction)

Mentioned in PR - May 1925 - P494. Used WD-12 tubes in the first five sockets! These are the Oscillator (Nov) & IF Section (Dec) which are used with the "Haynes Circuit" in the Sept. & Oct 1924 issues of PR. I believe this to the 4 cabinet set constructed by Billy Richardson (See pix elsewhere)???

" " " " " " " " "

Resistance-Coupled Superheterodyne

July 1925

PR - July 1925 - P66

Similar set to the one described directly above.

" " " " " " " " "

Eight-Tube Superheterodyne with Single Control

October 1925

PR - October 1925 - (Note 15)

(PR - October 1925 - P?? & P?? - Construction)

" " " " " " " " "

Town & Country Receiver

July 1926

Silver Marshall

Misc

60 - 70

Steel

S. Gordon Taylor

PR - April 1927 - P402

PR - July 1926 - P244 - Construction

PR - July 1926 - P245 - Scheme

Portable. This set very, very closely resembles the January 1926 "Silver Marshall Improved All-Wave Superhet" with just a slight re-arrangement of a few parts. Used SM 110A Antenna Coil, SM 111 Oscillator Coil, and three bakelite Silver Marshall IFs (210s & 211). Seven UX199s used. The 1927 ad explains how readers of PR can get free parts for the Silver-Marshall based Super Het called the "Town & Country".

Pote'

Choke Coil-Impedance-Coupled Superheterodyne

July 1927

Choke Coil Impedance

A. E. Pote'

RN - July 1927 - P62 - Brief Construction

RN - July 1927 - P62

Originally published in NY Herald Tribune [no date]. Used one stage 45 KC bandpass filter [L5]. Push-pull final audio. 8x24 inch panel.

Precel

Electrical Manufacturer's Agency, Inc.

Super Kit

September 1924

Chicago

RA - September 1924 - P53 - Kit

"Build a Super-Het. Including fixed coupler, oscillation coil, filter, three intermediate wave R. F. transformers, blue print, panel layout, etc. Complete kit list $25.00 each. Electrical Manufacturer's Agency, Inc."

Precise

Precise Manufacturing Corp.

Precise I. F. Transformer #901

October 1924

n / a

Precise

Misc

Iron

James Leo McLaughlin

Rochester, N. Y.

RN - October 1924 - What's New - Part

RN - Oct '24 "New Products": No. 901 IF Transformer. "They give high voltage amplification at a wave-length of 8,500 meters (35 KC)." "…of compact construction and shielded." "Peak is somewhat broad…" Addressed at 254 Mill street, Rochester, NY.

" "

" " " " " " " " "

Super-Multiformer No. 1700

October 1924

n / a

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

" " " " "

PR - October 1924 - P13 - Module Only

The Super-Multiformer has 4 IF stages $20. Likely 8,500 meters (35 KC) and iron core. Used also with the McLaughlin One-Dial & McLaughlin's U-NI-DIAL Radio. PR - October 1924 - P13 - Module Only. Still promoted in "What's New" PR - July 1926.

" "

Precise Manufacturing Corp. / U-Ni-Dial Radio Company

One Control Seven Tube Super-Heterodyne

November 1924

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

East Orange, N. J.

PR - April 1925 - P88 - U-Ni-Dial Radio Kit

QST - November 1924 - P9 - Construction

QST - November 1924 - P14 -Scheme

QST version Used "behind-the-panel" dials. Used the Precise Super-Multiformer No. 1700. The Super-Multiformer has 4 IF stages. $20. The Model 1900 Filtoformer is combined RF choke coil and by-pass condenser, $4.50. PR - Jan 1925 - P55 - Ad. Reference to new Super Het at bottom of ad. Ad for PR, July 1925 says "…7-tube Super…" and shows an 8-tube set! Used only one 45 volt battery for B+. x Called a "knockdown" in RTD, Aug '25. Also, sold his parts through "U-Ni-Dial Radio Company" of East Orange, N. J. Also, see Note 27. Barawik (Fall '25, P20) says: Seven tube set for use with outside aerial." "The addition of one tube makes possible the use of a loop aerial. Selectivity is somewhat increased…." Also, says 7x24 inch panel.

" "

" " " " " " " " " "

One Control Seven Tube Super-Heterodyne (Improved)

December 1924

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

" " " " " "

PR - April 1925 - P88 - U-Ni-Dial Radio Kit

R - Dec 1924 - P15 - Construction

R - Dec 1924 - P15 - Construction (Improved). Used the Precise Super-Multiformer No. 1700. Also, sold his parts through "U-Ni-Dial Radio Company" of East Orange, N. J. Also, see Note 27. 7x24 inch panel

" "

" " " " " " " " " "

Single Control Superheterodyne

October 1925

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

" " " " " "

Barawik Co. Catalogue - Spring 1926 - P21 - Complete

PR - October 1925 - P350 - Construction

PR - October 1925 - P351 - Layout & Scheme

Used the Precise Super-Multiformer "1700" and other Precise parts. Very differently shaped from most Supers. Panel is only 14 1/2 inches wide and 10 inches tall. Benjamin introduced an eight-tube socket panel specific to this radio (X). Front panel designed to utilize two meters across the top. Fourteen pages of construction in PR. D. T. W. (Tobe brand) loop recommended. Shows McLaughlin, appears very young. Unique 10x14.5 inch panel.

" "

" " " " " " " " " "

Single Control Superheterodyne [updated]

April 1926

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

" " " " " "

PR - April 1926 - P389 - Construction

PR - April 1926 - P390 - Scheme????

A brief update of the previous circuit immediately above.

" "

" " " " " " " " " "

Seven Tube Super-Heterodyne with Loop

Summer 1926

Precise

4 IF Stages in a Module

Iron

James Leo McLaughlin

" " " " " "

Barawik Co. Catalogue - Fall 1925 - P20 - Complete

CRCB - Summer 1926 - P?? - Construction ??

CRCB - Summer 1926 - P?? - Scheme

Seven tube set for use with a loop aerial. Used the Precise Super-Multiformer No. 1700. 7x24 inch panel.

Precise - Citizens Radio Call Book

"A Super Using the Universal Automatic Filament Control System"

Summer ? 1926

Precise

4 IF Stages in a Module

Iron

New York City

CRCB - Summer ?? 1926 - P170 - Parts

CRCB - Summer ?? 1926 - P61 - construction

CRCB - Summer ?? 1926 - P64

Used the Precise Super-Multiformer, Filtoformer, and audios.

Precise - Flewelling Eight

n / a

Flewelling 8

September 1926

Flewelling

Air ??

Edmond T. Flewelling

Special capacitive strip used under the sub-panel which connects tube sockets and other components to a common point. RN [Sept '26] article tells of numerous IFs and components being swapped out as a test of the capacitive strip construction. Pix shows Precise Multiformer. Flewelling invented the strip. Article about strip in RN, August '26. Also see Buell for Flewelling.

Precise - McDonald

n / a

Grand Prix Eight Tube Super-Heterodyne

October 1925

Precise

Module

James McDonald

Radio Digest - Parts 1 & 2 - October 24 & 31, 1925 P17 & 39 - Multipart Construction Series

Used a Lincoln "Oscillascope Oscillator Coupler" between the variable condensers and a Precise Multiformer unit. This is at least a 3 part series. 7x18 inch panel.

Precision Coil Company

Autodyne Coupler

February 1925

n / a

New York City

R - February 1925 - P81 - Part

Oscillation coupler only. "Made by the makers of the genuine 'Cockaday' coil."

Preston

Portable Super-Heterodyne

July 1926

Silver Marshall

Cecil W. Preston

RWI - April 8, 1925 - P24 - Complete

RN - July 1926 - P46 - Construction

RN - July 1926 - P46

Although the Parts List does not reflect any specific manufacturer, it's apparent Preston used Silver-Marshall Oscillator Coil and IFs.

Princeton

Princeton Superheterodyne Kit

Referenced in the AWA Annual Conference Auction Report, OTB, November 1997, P19. Sold for $70.

50 358

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

QST Magazine Super

n / a

QST Magazine Super

April 1923

QST - April 1923 - Construction

Article about superhets, how to build them and make them work. Nothing else known.

Qualitone

Qualitone Radio Corp.

Qualitone Super Kit

October 1925

7 or 8

Qualitone

Tall Misshapen Rectangle

(95)

(Air)

John G. Ryan

Chicago

RDI - October 24, 1925 - P19 - Kit / Blue Prints

[Note 26]

Kit used as 7 or 8 tube Super Het, in Ryan's "Simplest Possible Super" (See under Ryan below), or in "Heteroflex" (See under Radio Digest Ill. below). The shape is the same as the 2nd style of Klentz IF from the Summer 1926. Both companies were fron Chicago. See Klentz above. Dale Davenport has a Qualitone Super and also has a Qualitone Loop.

Quality Hi-Power

Quality Radio Supply

Quality Hi-Power Long Wave Super Heterodyne Transformers

Fall 1925

n / a

Quality Radio

Richmond, Indiana

[Note 27]

Transformers: Audios: $3.00 to $7.50. Radio: $2.00 to $6.00. Long Wave: $2.00 to $7.00. Push-Pull: $4.75. Location: 610 National Road. Early ad in RN, April-May 1922 (X).

Radek

Radek Superheterodyne

eBay pictures from 12/99

Radiodyne

Western Coil and Electrical Co.

The New 9 Tube Super Radiodyne Series WC-20

(1926)

9 - 199

(7x24)

2 - Drum

NIF

(Western Coil and Electrical Co.)

NIF

PNF

NIF

Racine, WI

Advertising Brochure

Taken from a brochure on eBay about 2003. Pictured are two Low Boy cabinets, a High Boy, and a table model. Nothing else known. Appears to be 7x24 inch panel.

" " " "

" " " " " " " " " "

The New One Dial 7 Tube Super Radiodyne Series WC-21

(1926)

7 - 199

(7x24)

2 - Drum

NIF

(Western Coil and Electrical Co.)

NIF

PNF

NIF

" " " "

Advertising Brochure

Taken from a brochure on eBay about 2003. Brochure pictures a tableNothing else known. Appears to be 7x24 inch panel.

Radio Age

"Dial Twister's" Reflexed Super

October 1924

Homemade

Air

RA - October 1924 - P44 - Lite Construction

RA - October 1924 - P44

From a Letter To The Editor, an small article detailing basic construction of this reflexed Super. Shows specs and how to make IF coils and cabinet construction. Generic parts are listed. The writer had his name withheld, but is called "A Dial Twister". Used "Turn-It" grid leak. Panel 18x7 inches.

" " "

(Seven Tube Super-Heterodyne)

June 1925

(RA - June 1925 - P??? - Construction)

" " "

(Radio Age Super)

March 1927

Silver Marshall

[Note 4]

Used Silver-Marshall parts.

Radio Apparatus Co., Inc.

Superheterodyne

Fall 1924

Omaha, Nebr.

CRCB - Fall 1924 - P184 - Parts

Ad mentions having parts for various circuit including an unbranded Super Het. Several branded Super Het are listed. Did they sell their own?

Radio Broadcast

Radio Broadcast Super

March 1927

Silver Marshall

[Note 4]

Used Silver-Marshall parts.

Radio Constructor's

Radio Constructor's Service Matched IF Transformer Kit

September 4, 1926

n / a

Radio Constructor's Service

Silicon Steel Laminations

Los Angeles

RWI - September 4, 1926 - P26 - Kit

"Build 'em Yourself…" Kit of parts builds 4 matched IF transformers. $12 postpaid.

Radio Digest Illustrated [Magazine]

(Super-Heterodyne)

June 1924

R - June 1924 - P80

Schematic part of an Allen-Bradley Co. ad. Compare scheme to next radio down.

" " " " " " " " " " " "

DX Seven Super-Het

1924

RD - 1924 - P?? - Construction [Note 13]

RD - 1924 - P?? [Note 13]

Construction and assembly plans in the booklet "Radio receivers - How to Operate & How to Make" (Circa 1924). On eBay 10/12/01. See Super Het Pix.

Radio Doctors

Radio Doctors, Inc.

Super-Heterodyne (A-4)

September 1924

Remler

Cylindrical

Iron

"Mr. Posth"

John B. Rathbun

Chicago

RN - September 1924 - P348 - Parts

RA - December 1924 - P41 - Construction

RA - December 1924 - P42

Advertised as a "1, 2, 3, or 8" tube Super Het. Circuit developed by "Mr. Posth of the Radio Doctors, Inc., Chicago." Standard Super construction. Nice layout blueprint on RA, P44. IFs are iron-core 45 KC types. Probably Remler, however, it Used 201As. Correction in the Oscillator Coil in RA, Jan '25, P50 & 52. RA - Aug '25 - P78 appears to be the same radio as the Dec '24 version. "FREE BULLETIN on 'How to Build a Superheterodyne'." Big radio. 8x32 inch panel.

Radio Experimenter's Bureau

The Super-Heterodyne

February 1924

n / a

Omaha, Nebr.

RDI - February 23, 1924 - P30 - Blue Print & Booklet

"Use your extra parts…" "306 Patterson Block Omaha, Nebr." "Better service to the Experimenter"

Radio Journal [Magazine]

n / a

Two Tube Super Heterodyne

June 1923

2 - 201A

L. R. [Roy] Armstrong

Los Angeles

RJ - June 1923 - P?? - Construction

RJ - June 1923 - P??

Used 201As. Believe this is Roy Armstrong who was Editor of Radio Journal at the time.

" " " " " " " " "

n / a

Two Tube Super Heterodyne With UV1714 Transformer ???

September 1923

2 - 201A

L. R. [Roy] Armstrong

" " " " "

RJ - September 1923 - P130 - Construction

RJ - September 1923 - P130

Changes to first set. This Used Radio Guild RF Coupler. Used 201As.

" " " " " " " " "

n / a

(Six ?? Tube Super Heterodyne)

December 1923

6 ??

L. R. [Roy] Armstrong

" " " " "

(RJ - December 1923 - P?? - Construction ??)

References in January 1924 issue.

" " " " " " " " "

n / a

Intermediate Frequency Air Core Transformers

November 1924

n / a

Cylindrical

L. R. [Roy] Armstrong

" " " " "

RJ - November 1924 - P16 - IF Construction

These are 4 inch tubes with variable condensers on one end.

Radio Mechanics [Magazine]

(Radio Mechanics Man-O-War Super)

March 1927

Silver Marshall

Misc

Steel

[Note 4 & 13]

Called "Radio Mechanics Portable Super" in the ad in CRCB - Mar '27. Called separate radios in April 1927 RB ad for SM. Used Silver-Marshall parts. May also be called the "Eclipes".

" " " " " " " " " "

(Radio Mechanics Portable Super)

March 1927

Silver Marshall

Misc

Steel

[Note 4]

Called "Radio Mechanics Portable Super" in the ad in CRCB - Mar '27. Called separate radios in April 1927 RB ad for SM. Used Silver-Marshall parts.

Radio News [Staff]

Standard Super-Heterodyne Using Resistance Coupling

March 1925

New York City

RN - March 1925 - P1682 - Brief Information

RN - March 1925 - P1682

From "Standard Hookups" column, "Sheet 20", "Circuit 85". Values shown.

" " " " " "

Resistance Coupled Super-Heterodyne

April 1926

" " " " "

RN - April 1926 - P1450 [158] - Brief Information

RN - April 1926 - P1450

From "Standard Hookups" column, "Circuit 1558". Values shown.

Radio News Laboratories

Super Het Traveling Companion

November 1926

Silver Marshall

Misc

Steel

RN - November 1926 - P486 - Construction

RN - November 1926 - P486

Six UV199s used. Set built into small suitcase. Used Silver Marshall IFs.

" " " " " " " " "

(Radio News Super)

March 1927

Silver Marshall

Misc

Steel

[Note 4 & 13]

Used Silver-Marshall parts.

Radio Owners Service Company

Radio Owners service Company

Eight Tube Baseboard Model Kit

October 1925

Jefferson / Remler

Oakland

RW - October 1925 - 39 - Complete

Used Jefferson No. 150 or Remler No. 600 IFs.

" " " " " " " " " " "

Eight Tube Shielded Model Kit

October 1925

" " "

RW - October 1925 - 39 - Complete

" " " " " " " " " " "

" " " " " "

Receptrad Super

June 1924

Iron

" " " " "

R - June 1924 - P44 - Parts / Manual

Oscillator coils look like Ultradyne L-2. Six (6) rheostats on front panel. IF transformer has changed name to "Type 1716, Long Wave". Victor Greiff author of "Super-Heterodyne Manual". Very similar to Dale's Berry Super. Front panel from eBay is 37x9.5x10.5 inches deep.

" " " " " " " " " " "

" " " " " "

Receptrad

September 1924

Iron

" " " " "

RB - September 1924 - P484ish - Kit / Parts

Good ad RB Nov '24 P176. Called "Receptrad Kit" in RB, Jan '25, P582. D:\

Radio Review

A Power Six-Tube Super-Heterodyne

September 1925

New York City

(RR - September 1925 - P15 - Construction)

Referenced in RR, Dec 25, P71. Probably the McMurdo Silver 6 tube Autodyne. RR says Radio World published this set first.

Radio World Illustrated [Magazine]

n / a

Three Tube Super-Heterodyne

August 9, 1924

Honeycomb

" " " " "

RWI - August 9, 1924 - P1 - Construction

RWI - August 9, 1924 - P1

Used honeycomb coils. Apparently did not work well as it had negative reader comments.

" " " " " " " " " " " "

" "

Six Tube Super-Heterodyne Using A Variometer

December 6, 1924

J. E. Anderson

" " " " "

(RWI - December 6, 1924 - P??)

RWI - August 15, 1925 - P19 - Schematic/Parts

Might be a three-dial set. RWI, August 15, 1925, P19: Schematic has complete parts list and details. The variometer is to be used to tune the wavelength. IFs designed at 50 KC. UV201As should be used, each at 10 ohms.

" " " " " " " " " " " "

" "

Portable Super-Heterodyne

June 13, 1925

Wainwright Astor

" " " " "

(RWI - June 13, 1925 - P??)

" " " " " " " " " " " "

" "

8 Tube Set

July 4, 1925

Abner J. Gelula

" " " " "

(RWI - July 4, 1925 - P??? - Construction ??)

" " " " " " " " " " " "

" "

8-Tube Super-Heterodyne

September 26, 1925

Sidney Finkelstein

" " " " "

RWI - September 1925 - P?? - Construction

" " " " " " " " " " " "

" "

DX Super-Heterodyne

November 21, 1925

8 [+ 1] *

J. E. Anderson

" " " " "

(RWI - November 21, 1925 - P?? - Construction)

(RWI - November 1925 - P??)

This is the same three-dial Super as shown in the "Baby Super" above with additional stages for DX'ing. Used a crystal detector rather rthan a tube detector, so, the radio theoretically is a nine tube set. Schematic also found in January 2, 1925 RWI with detailed parts description.

" " " " " " " " " " " "

" "

Housing the Pressley Super-Heterodyne

December 1925

" " " " "

RWI - December 12, 1925 - P??? - Three Part Construction

Three part article: Dec 12, Dec 19, & Dec 26.

" " " " " " " " " " " "

" "

Super-Heterodyne De Luxe

March 1926

" " " " "

RWI - March 20, 1926 - P??? - Construction???

[Note 17]

" " " " " " " " " " " "

" "

A Super From An Old Set

April 1926

[Caesar King]

" " " " "

RWI - April 10, 1926 - P??? - Construction???

" " " " " " " " " " " "

" "

Converted Super

March 1928

" " " " "

Article by Tim Turkey in RWI, March 17, '28.

" " " " " " " " " " " "

" "

A Short-Wave Mixer

July 1928

n/a

70 ?

n/a

Herman Bernard

RWI - July 7, 1928 - P2 - Construction/layout

RWI - July 7, 1928 - P2 - Scheme

This is two tube mixer only is of the "sum-frequency" type, used by only a few Supers like the Infradydne as a One-Spot receiver. The RF stage tube is a Screen Grid tube while the oscillation stage "can be a 112". Otherwise, it wouild be a UX201A. This mixer is to be used for Short-Wave reception (15 to 135 meters) and pulls in the broadcast band (200 to 600 meters) without changing condensers or coils. Mixer output possibly in the range of 70 KC is indicated. This circuit might have been incorporated into many homebrews after the Summer of 1928. Watch for two sets of two small, ganged tuning condensers with a larger condenser placed between the two sets of two. Two variable coils grace the baseboard, separated by one of the pairs of ganged, small condensers. Herman Bernard was the RWI Editor at that time.

41 399

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Rathbun

n / a

Improved Super-Heterodyne

June 1924

8 - 201A

(7 x 32)

Homebuilt

Vertical Tuna Can with Bottom Flange

150

Air

John B. Rathbun

RA - June 1924 - P19 - Construction

RA - June 1924 - P19 - Layout

Standard Super construction. Homebuilt neutrodyne-type air core transformers are used for the IFs. Intermediate Frequency is 2000 meters or 150 KC. Schematic in Radio Age, June 1924 on page 20.

Raven

Raven Radio, Inc.

Superheterodyne Kit

October 1924

n / a

Raven

Vertical Tuna Can w/ Terminals on Top

NIF

Air

Frank A. Raven

Albany, NY

Montgomery Ward Catalogue - [Fall] 1924 - P30 - Kit

From Rich Wolven, "(Raven) IF unit made of brown bakelite that was made in a local billiard ball factory." Kit contains One Oscillator Coil, one Tuned Stage transformer, three Intermediate Transformers, Schematic, and Wiring Diagram. Nice ads PR, Nov '24, P54 & PR, Dec '24, P108 (X). Incorporated in October of 1924 (Note 16). Montgomery Ward Catalogue, 1924, $19. Barawik, Oct 24: Kit, $22.50. RN, Oct 24, P450 (Barawik Ad) shows kit. Barawik, Fall '25: Kit, $15. P. A. E. Armstrong wrote book, "Superheterodyne Receiver, Theory, Operation, and Construction." Before selling Supers, sold variometers/variocouplers. Advertised full page variometers, etc in PR, Nov '23. Addressed at 8 Learned Street, Albany, NY. Rich Wolven [mailto:Wolvenrich@aol.com] of Albany, NY is said to be a Raven authority.

" "

" " " " " "

Superheterodyne Module Kit

December 1924

n / a

Raven

Module

Air

Frank A. Raven

" " " "

Raven Brochure - 1924

Raven brochure shows a three-dial radio and says module is "Tuned and Matched". "Moisture proof - Sealed In - Stays Adjusted". "7 1/2 x 4 3/4 x 2 1/4". "Laboratory Matched". "...seven binding posts now replace thirty-seven to forty-two solder connections which have to be made with separate parts." Module has "1 Filter Circuit Coil, 3 Radio Frequency Transformers, 3 Sockets for Standard Tubes 201A or 301A. Completely wired in moisture proof wax. Binding posts plainly marked. One Oscillator included with each 'Kit'. A Single Complete Unit. $25."

" "

" " " " " "

Superheterodyne with Module

December 1924

Raven

Module

Air

Frank A. Raven

" " " "

Raven Brochure - 1924

Raven brochure shows a three-dial radio created from customer's two-dial oldie.

" "

" " " " " "

Superheterodyne Unwired Set

November 1925

Raven

Air

Frank A. Raven

" " " "

RN - November 1925 - P674 - Radio Set Directory

RN ad says dry cell or storage batteries, loop antenna, separate speaker, two tuning controls, and lists at $125. RTD, Aug '25: Made their own cabinets in Cobleskill, NY.

Raven - Barawick

" " " " " "

8 Tube Superheterodyne

October 1924

8 - 201A

7x36

Raven

Vertical Tuna Can w/ Terminals on Top

NIF

Frank A. Raven

" " " "

RN - October 1924 - P450 - Barawick Ad - Complete

Barawick ad of Oct. 1924 shows a complete Super with parts chosen by Barawick. Panel is 7x36 inches (WOW).

Ray-Dee-Artcraft

Ray-Dee-Artcraft Instrument Company

Super-Heterodyne Neutro-Trans Type 10-A

September 1923

n / a

Ray-Dee-Artcraft

Air

(Arthur L. Munzig)

Redlands, Calif.

RJ - September 1923 - P144 - Set Of Four Transformers

"Set of 4 Super-Heterodyne Neutro-Transformers with complete instructions for building a six tube DX receiver." It's based on 6 tubes, but without audio amplication. Used 1 Input transformer and 3 of the Ray-Dee-Artcraft Super Heterodyne Tuned RF Transformers Type 10-A. Wound with #24 wire rather than the typical #32. "Having windings of large wire the distributed capacity is extremely low, thus increasing the inductive value and lowering the radio-frequency resistance, a condition so very desirable when long wave transformers are considered. We know of no other Super-Heterodyne transformer constructed in this manner." IFs set at a "Neutrodyne" angle on the baseboard. Kit was $35. Ad in RJ, Nov '24, back cover still mentioned Super Het IFs and parts.

" " " " " "

" " " " " " " " " " "

Four Tube Super Heterodyne Neutrodyne

August 1923

Ray-Dee-Artcraft

Tall Cylinders

Air

Arthur L. Munzig

" " " " "

RJ - August 1923 - P60 - Construction

RJ - August 1923 - P63

Arthur L. Munzig was president of the Ray-Dee-Artcraft Instrument Company.

" " " " " "

" " " " " " " " " " "

Five Tube Super Heterodyne Neutrodyne

October 1923

Ray-Dee-Artcraft

Tall Cylinders

Air

Arthur L. Munzig

" " " " "

RJ - Oct. / Nov. 1923 - P164

" " " " " "

" " " " " " " " " " "

Six Tube Super Heterodyne Neutrodyne

October 1923

Ray-Dee-Artcraft

Tall Cylinders

Air

Arthur L. Munzig

" " " " "

RJ - Oct. / Nov. 1923 - P164

" " " " " "

" " " " " " " " " " "

Super Heterodyne Neutrodyne Reflex DX

October 1923

Ray-Dee-Artcraft

Tall Cylinders

Air

Arthur L. Munzig

" " " " "

RJ - Oct. / Nov. 1923 - P206 - Transformer Type 10-A

RJ - Oct. / Nov. 1923 - P164 - Construction

RJ - Oct. / Nov. 1923 - P164, 165, 166

Article shows several schematic configurations based mostly on 6 tubes using the Ray-Dee-Artcraft transformers. "Drycell tubes used throughout!!" As well as 201As, it can use WD-11 tubes. "Can be built for less than $150." 8x48 inch panel!!!

" " " " " "

" " " " " " " " " " "

Tuned R. F. Super Heterodyne

March 1924

7 - 201A & 1 - 200A

7 x 36

2 or 6

(5)

L or W

Ray-Dee-Artcraft

Tall Cylinders

Air

Arthur L.Munzig

" " " " "

Radio - June 1924 - Pg 78 ???

RJ - March 1924 - P127 - Construction

RJ - March 1924 - P127

Note a multi-tap switch on the left end of the front panel between the main tuning dials; used to tune the long-wire antenna. A minimum of four taps. Used Modulation System from Lacault, found by noting that there is no plate voltage on the Modulator [Mixer] tube. Four 11-plate condensers on front panel to tune each IF stage are pictured in article. Munzig says they are optional as the IFs are efficient enough to leave them out. Schematic does not show them. Spacing between each IF has to be three inches to keep it from having to be shielded. Thus, the long panel at 36 inches! Used 201As in all sockets except the second Detector, sixth tube in. Both Oscillator & Antenna coils are lying down on the baseboard and both are hand-wound, shown in the article. "Can use loop, but with less intensity." See "Phenix".

R. B. C.

" " " " " " " " " " "

Type SR Radio Frequency Transformers

March 1924

n / a

PR - March 1924 - P58 - Parts

"…sharp peak of 10, 000 meters…". Ad printed from PR, Dec 1924.

" " "

" " " " " " " " " " "

R. B. C.-Type KM Radio Frequency Filter, Coupler, & Transformers

November 1924

n / a

Rieger-Bailey

Air

PR - November 1924 - P40 - Parts

"Matched standard", "Air core", "Shielded in Nickel-brass case", "Specially constructed filter, embodying a new principle never before used in radio".

" " "

" " " " " " " " " " "

R. B. C. Superheterodyne

January 1925

PR - January 1925 - P50 - Parts

R. C. A.

Radio Corporation Of America

IF Transformer UV-1714

January 15, 1922

n / a

R. C. A. [General Electric]

Misc

Iron

n / a

Camden, N. J.

RN - January 1922 - P623 - IF Transformers

"For use solely with Radiotron UV201...Delivery begin January 15, '22." 200 to 500 meters and 500 to 5000 meters [60 KC] with taps. RCA says $6.25. Designed by General Electric in Schenectady, N. Y. with RCA logo. See E. I. S. for usage.

" " "

" " " " " " " " " " "

IF Transformer UV-1716

January 15, 1922

n / a

R. C. A. [General Electric]

Misc

Iron

n / a

" " " " "

RN - January 1922 - P623 - IF Transformers

"For use solely with Radiotron UV201...Delivery begin January 15, '22.". Effective at 30 to 50 KC. 5000 to 25000 meters. QST, December 1924, P9, says "Transformer peaks 7000 meters." Used at 60 KC in most applications. RCA says $8.50. Eltz in RB, Nov '23, article says UV-1716 is "extremely efficient at 47.5 KC". From Jan 28, '28 issue of New York Sun Radio Section: "Using a '99 or 6 mu (tube) and a 1716 RCA transformer peaking at 30 KC and with a 3 1/2 to 1 ratio, the gain is theoretically 3 1/2 X 6, or 21 per stage...therefore (3 stages are) 21x21x21...See RCA-Pearne and EIS for usage. " Designed by General Electric in Schenectady, N. Y. with RCA logo.

" " "

" " " " " " " " " " "

"SOS" Super Heterodyne Receiver

(1922)

n / a

" " " " "

Shown in a brochure from RCA. Appears to be 8 or 9 tube of Armstrong design.

" " "

" " " " " " " " " " "

Radiola Super VIII AR-810

March 4, 1924 ^^^^

6 - 199

1 - Optional

Internal Loop

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA P19]

- , 1 tuned, 2 IFs, 2 Audio ^. $425.00 ^. Extensive review of the 810 in the Feb '25 issue of PR on page118.

" " "

" " " " " " " " " " "

Radiola Super-Heterodyne AR-812

March 4, 1924 ^^

6 - 199

1 - Optional

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

PR - March 1924 - Inside Front Cover - Manufactured

R - June 1924 - P37

RB - Mar 1924 - P12: First announcement of Supers. Scheme in Radio, June '24, is not detailed. (Note 12:) April 1924 announced Semi-Portable AR-812 & Super VIII AR-810. Made by General Electric for RCA. - , - , 2 IFs, 2 Audio ^. $220.00 ^.

" " "

" " " " " " " " " " "

(Radiola Console AR-813)

(1924)

6 - 199

1 - Optional

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

Self-contained radio with panel in small, Brunswick-made cabinet just to house the 813 panel.

" " "

" " " " " " " " " " "

(Phono-Radio Panel AR-813)

(1924)

6 - 199

1 - Optional

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

Found in the Brunswick Phono-Radio Console Model 160, ????, and ????

" " "

" " " " " " " " " " "

Radiola 24

May, 12 1925 ^^^^

6 - 199

1 - Optional

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

RRET - July 1925 - P44 & 45 - Manufactured

[Note 18 - RCA P19]

Made by Westinghouse ^^. (Note 12:) Not as popular as the Radiola 26. Discontinued before Christmas 1925. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $195.00.

" " "

" " " " " " " " " " "

Radiola 26

June 13, 1925 ^^^^

6 - 199

1 - Optional

Internal Loop

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

RRET - July 1925 - P44 & 45 - Manufactured

[Note 18 - RCA P19]

Repackaged AR-812 and made by Westinghouse ^^. (Note 12:) More popular than the Radiola 24. Lasted into 1927. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $225.00.

" " "

" " " " " " " " " " "

Radiola 28 (D-C)

August 1925 ^^

2 - Drum

1 - Optional

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-22]

(Note 12:) "UX" style catacomb for new UX171 output tube. Seven UX199s & one UX171. Adaptable to light-socket with Radiola Loudspeaker Model 104 ($310 - Sept '25). Second series Supers. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $260.00 ^. IFs peak at 60 KC.[5000 meters] & scheme [most values missing] in RN, Sept '26, P254. Lite scheme in R, April 26, P36

" " "

" " " " " " " " " " "

Radiola 25

September 10, 1925 ^^^^

6 - 199

1 - Optional

General Electic

Reflexed Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-20 & 21]

(Note 12:) Used the "UX" style catacomb for the new UX171 output tube. Could be adapted to light-socket use with the RCA Radiola Loudspeaker Model 104. Second series Supers. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $165.00 ^.

" " "

" " " " " " " " " " "

Radiola 28 (A-C) ^^

September 29, 1925 ^^^^

2 - Drum

1 - Optional

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-23]

" " "

" " " " " " " " " " "

Radiola 30 (A-C)

February 15, 1925 ^^^^ ??

8 [+2 A-C] ^

199, 210, 281

2 - Drum

1 - Optional

Internal Loop

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-24]

(Note 12:) First RCA Radiola self-contained A-C version. A basic Model 28 with a light-socket power unit. It used only 7 tube locations in the catacomb with the final audio tube 171 or 210 externally. One schematic shows two UX216-B tubes in the power supply rather than the 281s typically used. Not popular. Discontinued in early 1927. Second series Supers. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $575.00 ^.

" " "

" " " " " " " " " " "

Radiola 30-A (A-C)

August 7, 1927 ^^^^

8 [+2 A-C] ^

199, 210, 281

2 - Drum

1 - Optional

Internal Loop

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Beckley Ralston Cat. - Xmas 1928 - P4 - Manufactured

[Note 18 - RCA 1-25]

(Note 12:) Model 28 with light-socket power unit & built-in modified RCA 100A speaker. One schematic shows two UX216-B tubes in the power supply rather than the 281s typically used. Illuminated dial. Into 1929. Second series Supers. Could use Dry Cell batteries. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $495.00 ^. Fall 1928, Beckley Ralston catalogue: $285.

" " "

" " " " " " " " " " "

Radiola 30-A (D-C)

September 14, 1927 ^^^^

199 & 171

2 - Drum

1 - Optional

Internal Loop

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-25]

Probably Model 28. Seven UX199s & one UX171. Second series Supers. Used Dry Cell batteries. No untuned, 1 tuned, 2 IFs, 2 Audio ^.

" " "

" " " " " " " " " " "

Radiola 32 (A-C)

July 27, 1927 ^^^^

8 [+ 2 A-C] ^

199, 210, 281

2 - Drum

1 - Optional

Internal Loop

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-27]

(Note 12:) Model 28, the 104 Loudspeaker with socket power unit, & internal, rotatable loop at $895! Could use Dry Cells. Discontinued in mid 1928. Second series Supers. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $895.00 ^.

" " "

" " " " " " " " " " "

Radiola 32 (D-C)

September 15, 1927 ^^^^

199 & 171

2 - Drum

1 - Optional

Internal Loop

General Electic

Catacomb

3 Mil Silicon Steel Laminations

n / a

Edwin H. Armstrong & Harry Houck

" " " " "

Manufactured

[Note 18 - RCA 1-27] ??

(Note 12:) Model 28. Could use Dry Cells. Discontinued in mid 1928. Second series Supers. No untuned, 1 tuned, 2 IFs, 2 Audio ^.

" " "

" " " " " " " " " " "

Radiola 60 (A-C)

August 13, 1928 ^^^^

" " " " "

Beckley Ralston Cat. - Xmas 1928 - P3 - Manufactured

[Note 18 - RCA 1-39]

(Note 12:) Considered the first TRUE modern A-C Superheterodyne. Used 7-UY227, 1-UX171A (power amp), and 1-UX280 (power supply). Lighted single dial. Third series of Super. No untuned, 2 tuned, 2 IFs, 1 Audio ^. $175.00 ^. IFs peak at 180 KC.

" " "

" " " " " " " " " " "

Radiola 60C Console ?????

" " "

" " " " " " " " " " "

Radiola 62 [A-C] AR-892

September 14, 1928 ^^^^

" " " " "

Beckley Ralston Cat. - Xmas 1928 - P3 - Manufactured

[Note 18 - RCA 1-40]

(Note 12:) Essentially the same chassis as the Radiola 60, but more expensive burled-Walnut highboy cabinet and a dynamic speaker. Used 8-UY227, 1-UX280 (power amp), 2-UX281 (power supply), and 1-UX250 (as part of the dynamic speaker circuit). Third series of Super. No untuned, 2 tuned, 2 IFs, 1 Audio ^. $375.00 ^. IFs peak at 180 KC.

" " "

" " " " " " " " " " "

Radiola 64 De Luxe (A-C)

October 23, 1928 ^^^^

" " " " "

Beckley Ralston Cat. - Xmas 1928 - P2 - Manufactured

RE - February 1929 - P29

[Note 18 - RCA 1-41]

(Note 12:) Top of the line (Radiola 60) with lots of extra features (like the new AVC), more tubes, and a special power supply. Used 8-UY227, 1-UX280 (power amp), 2-UX281 (power supply), and 1-UX250 (as part of the dynamic speaker circuit). Third series of Super. No untuned, 2 tuned, 2 IFs, 1 Audio ^. $555.00 ^. Article in RE, Feb '29, P29. IFs peak at 180 KC.

" " "

" " " " " " " " " " "

Radiola 66 (A-C)

July 18, 1929 ^^^^

175

" " " " "

Manufactured

[Note 18 - RCA 1-42]

(Note 12:) Low-priced replacement for the Radiola 62. Third series of Super. No untuned, 1 tuned, 2 IFs, 1 Audio ^. $179.00 ^. IFs peak at 175 KC.

" " "

" " " " " " " " " " "

Radiola 67 Radio / Phonograph (A-C)

September 28, 1929 ^^^^

" " " " "

Manufactured

[Note 18 - RCA 1-43]

(Note 12:) Most elaborate of the third series of Super. First RCA Victor radio-phono combination. Similar to the Radiola 64 chassis but with Radiola 66 modifications. No untuned, 1 tuned, 2 IFs, 2 Audio ^. $690.00 ^.

R. C. A. - Abbott

n / a

Compact Nine Tube Super-Heterodyne

1924

9 - 201A or 199

8 x 24

R. C. A. UV-1716

Misc

Iron

Air ??

Harry Abbott

Chicago

RDI - "Radio Receivers" Book 1924 - P65 - Construction

RDI - "Radio Receivers" Book 1924 - P65

From RDI article by Harry Abbott called "Another Long Distance Getter". A builder might use three "Duo-Lateral Coils" rather than unwound wire from a commercial Input coil [90 degree variometer]. Used 4 Radio Corporation UV1716 IFs (50 KC) or homemade coils. 8x24 inches panel.

R. C. A. - Eltz

n / a

Super-Heterodyne Receiver

November 1923

R. C. A. UV-1716

Misc

Iron

Air ??

George J. Eltz, Jr.

New York City

RB - November 1923 - P71 - Construction

RB - November 1923 - P72

IFs tuned to 47.5KC or near 6000 meters. Used RCA 1716 IFs. Set used isolation thru the use of metal dividers between IFs as taught by Armstrong at Radio Club of America meetings. Designed for 201As, but UV199s, WD11s, and WD12s can be used. Eltz demonstrated his Super in front of the Radio Club of America using WD11s. In late 1923, Eltz was Radio Sales Manager for Manhattan Electrical Supply Company (MESCO) in New York City. Worked with Armstrong on the "Super-Regen-Het" (See Armstrong above). Another scheme: RB Sept 1924. ?? inch panel.

R. C. A - Pearne

n / a

Eight Tube Super-heterodyne Receiver

November 1923

(201A)

(8 x 36)

(General Electric UV1714 / UV1716)

Misc

Iron

Frank D. Pearne

RA - November 1923 - P3 - Construction

RA - November 1923 - P2 - Layout & Scheme

Used a variometer in the antenna circuit. Used 250 turn honeycomb coils as a "transfer" stage between the first detector and the first IF stage. Corrections to scheme on page 44 in May 1924 Radio Age. This set and the one immediately below had characteristics similar to the early Leutz sets with the multiple tuning & filament dials. Nov 1923 (RA) shows exterior and interior of a Leutz C. Also, shown in the Radio Age Annual, page 79 with the scheme on page 80. Likely an 8x36 inch panel.

" " " " "

n / a

Ten Tube Super-heterodyne Receiver

November 1923

(201A)

(8 x 36)

(General Electric UV1714 / UV1716)

Misc

Iron

Frank D. Pearne

RA - November 1923 - P3 - Construction

RA - November 1923 - P2 - Layout & Scheme

Used a variometer in the antenna circuit. Used 250 turn honeycomb coils as a "transfer" stage between the first detector and the first IF stage. Became a ten tube set by using to additional audio stages after the first audio shown in the schematic of the eight tube receiver. Corrections to scheme on page 44 in May 1924 Radio Age. This set and the one immediately above had characteristics similar to the early Leutz sets with the multiple tuning & filament dials. Nov 1923 (RA) shows exterior and interior of a Leutz C. Also, shown in the Radio Age Annual, page 79 with the scheme on page 80. Likely an 8x36 inch panel.

R. C. A. - Rathbun

n / a

Junior Super-Heterodyne (SH-9)

January 1924

2 + 3 + 3

201A, or 216A, or 199

Three Separate Cabinets

2 + 1

General Electric UV1714 / UV1716

Misc

Iron

Two Honeycomb Air Coils

John B. Rathbun

RA Annual - 1924 - P74 - Lite Construction

RA Annual - 1924 - P74 - Scheme

Standard 1923 receiver construction. Three separate cabinets were used. First cabinet [about 12 inches long] was the Tuner-Oscillation section. The second [also about 12 inches long] was the Frequency Changer section. The third [about 8 inches long] was the audio section. In the first section, the schematic showed how regeneration could be added if the builder wished. Said it made the set harder to tune, however. It had two tubes; the oscillator and the first detector. The second cabinet had two movable 250 turn honeycomb coils for energy transfer. It held three tubes, all in the IF. Recommended RCA 60 KC IF transformers. Construction of the IFs came in the March 1924 issue of Radio Age, P11, if you wanted to build your won. The audio section was shown as three stages, but no further info was provided. Rathbun said 199s would work, but discouraged it. RA, January 1924, P11,Construction and p10 for the layout. Schematic in Radio Age, June 1924 on page 20. Also, Radio Age Annual for 1924, p74. Could work on a long wire or loop antenna. See details above for panel sizes.

R. C. A. - Roberts

n / a

Practical Super-Heterodyne with 199s

August 1923

5 - 199 or 201A

(7 x 24)

General Electric UV-1716

Misc

Iron

Two 750 Honeycomb Coils

Walter Van B. Roberts

Princeton University, N. J.

RB - August 1923 - P340 -Construction

RB - August 1923 - P345

This is about the first homebuilt super using 199 tubes. Used RCA 1716 IF transformers. General Radio variable condensers were recommended. Variable caps were used to tune each of the IF stages, but likely not from the front panel. Pacent Coils and Pacent parts for Roberts Super in RB - Aug '23. His original super for this article had only two IF stages, making the set a 5 tube arrangement. The filter stage ahead of the IFs is a pair of DL 750 honeycomb coils, shunted by a .001 variable capacitor each. This is the first circuit described in Robert's article. See "Roberts" for details of the other superhet.featured.

Real Equity Shop, The - Ultradyne

Real Equity Shop, The

Equity Ultradyne & SuperHeterodyne Transformers

March 1924

(8)

Real Equity Shop

Vertical Tuna Can

Two Honeycomb Air Coils

Air

Chicago

RA - March 1924 - P45 - Kit

This is a Lacault Ultradyne knock-off. "The coils are honeycomb wound with double green silk. Case, 3"x3"x1 1/2", genuine moulded bakelite. Type R2 for all Superheterodynes. Type R1 for first R. F. Transformer for use in Ultradyne…Either, each postpaid, $7.50."

Real Equity Shop, The

Equity SuperHeterodyne

May 1924

Real Equity Shop

Vertical Tuna Can

Two Honeycomb Air Coils

Air

Chicago

PR - May 1924 - P104 - Blue Prints

"Gets result." "Not a fliver." "The coils are honeycomb wound with double green silk. Case, 3"x3"x1 1/2", genuine moulded bakelite. Type R2 for all Superheterodynes." See Ultradyne [Real Equity Shop, The] below.

Real Equity Shop, The

Super-Heterodyne

October 1924

Real Equity Shop

Vertical Tuna Can

Two Honeycomb Air Coils

Air

Chicago

RN - October 1924 - P ??? - Kit / Parts

"Matched set of four...A hookup diagram furnished free from which wonderful results are obtained." Used IFs and choke coil. "The [IF] coils are honeycomb wound with double green silk. Case, 3"x3"x1 1/2", genuine moulded bakelite." (Also, RN - November 1924 - P859 - Kit / Parts)

Receptrad

Radio Receptor Co.

Super-Heterodyne Kit [SH8-1]

March 29, 1924

n / a

Radio Receptor

Cylindrical

100

"Comunited Iron"

Air

Lieut. Victor Greiff

New York City

RWI - March 29, 1924 - Complete Kit

Greiff [Note 10] - Construction

Greiff [Note 10]

The SH8-1 kit contained one Oscillo-Coupler, type SW-21, one Tuned Filter Coupler, type H-34, Intermediate Frequency Transformers, type RF-1716, two By-Pass Condensers 1mfd., C-1000, one Audio Transformer, type ATX, and one Audio Transformer, type AT-3. Mar '24 PR: $55.00. Radio World March 29, 1924 - Ad for Chicgo Salvage, complete kit, $92.50 (X). PR, March 1924, P89, Kit. QST - May '24 - Classified ad on P109 & an ad on P 97. Im May 1924 in the Harry Alter catalogue, the $55 basic list kit was reduced to only $19.95. What a deal! June 1924 Radio ad "Model 1716" IF transformers (Maybe called 1716 after the RCA IFs). "Knockdown" still listed in RTD, Aug '25, although, the term "knockdown" would have been illegal due to the RCA suit! Also see "Silver Marshall - Green". 8x40 inch panel!

" " " "

" " " " " " "

Eight Tube Long Distance Receiver [SH8-1]

1924

8 - 201A

7 x 40

1 -V & 1 - MA

Radio Receptor

Cylindrical

100

"Comunited Iron"

Air

Lieut. Victor Greiff

Allan C. Forbe

" " " " "

RDI - "Radio Receivers" Book 1924 - P61 - Construction

RDI - "Radio Receivers" Book 1924 - P61

This might have been Receptrad's Model A. All others found are somewhat different. The Barry Receptrad is called the Improved Model B and is very similar to all others found. Article by Allan C. Forbes called "How To Construct A Super-Heterodyne Set". Used Radio Receptor Receptrad IFs, numbered the same as the RCA transformers, "1716". IF used "Herring Bone Windings" which was patented and used by only RR. IF is of commuted iron called the steel core type. This receiver is different from the typical Receptrad as it has a tap switch between the tuning dials and only five filament controls across the bottom of the front panel where all others have six with most sets having them above the filament controls.I believe the fronty panels were engraved to order like in the case of the Dean Receptrad. Most other panels are 8x40 rather than the 7x39.5 inches of this early model. [WOW]. See Dean Receptrad above.

Receptrad - Barry

Barry, Jas A.

Improved Super Heterodyne Model B

1924

8 - 201A

7 x 40

1 -V & 1 - MA

Radio Receptor

Cylindrical

100

"Comunited Iron"

Air

Lieut. Victor Greiff

Jas. A. "Jimmie" Barry

Fort Smith, AR

From Dale Davenport. Only known surviving copy of a low production set manufactured in Fort Smith Arkansas in 1924.....obtained from Jimmie Barry, who built them. These were sort of thin "knock offs" of the Victor Greif Receptrad design. (This one won the Hauck award in 1994 at the last ARCA Convention) The Jimmy Barry set uses Radio Receptor IFs as well as audios and is a permutation of the Victor Greif design. The sub panel engraving says: "IMPROVED SUPER HETRODYNE" (sp), "Designed by Jas. A Barry", "1924". The front panel engraving says: "MODEL B IMPROVED SUPER-----HETRODYNE". Berry once told Davenport the parts were purchased from and the panel / sub-panel engraving / drilling were done by Sterling Radio In Kansas City. To the best of Barry's recollection, production may have totalled less than a couple of dozen, but they were "designed", built, and marketed [under RCA's nose!]. Given the small community (Fort Smith) where they were built and sold, Davenprt believes it's a reasonable figure. If a serial numbering system was used, it must have been by a paper tag or some such, as none is evident now, Davenport adds. This single surviving example was originally sold to a state legislator in Oklahoma in a town 30 or 40 miles to the south west of Fort Smith. See Sidebar: In Fort Smith, Arkansas, fifteen-year-old Jimmie Barry signed on WGAR at 5:00 P.M. each day: "This is WGAR, the Southwest American station, located at Fort Smith, Arkansas, the Playground of America. We have just come on the air, and we wonder if anyone is listening." He would call names of various set owners and ask whether they were home yet. The telephone would ring, and someone would say that the program was coming in fine. When a person called and said that he was having trouble with his receiving set, Barry would announce that fact on the air and promptly lose most of his listeners. They would hurry to the home of the owner of the defective set to help with repairs. Receptrad above.

Receptrad - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Radio Receptor

Cylindrical

100

"Comunited Iron"

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Receptrad - Green

n / a

Easily Made Super-Het

October 1924

8 - 199

7 x 28

Radio Receptor or Silver Marshall

Cylindrical or Square

100 or 50

"Comunited Iron" or Steel

Homebuilt Air

Paul Green

Chicago

RA - October 1924 - P9 - Construction

RA - October 1924 - P9

Pictured with enclosed Acme tuning capacitors. Two filament controls on final design. Two makes of IFs on the Oct final versions; Silver Marshall or Receptrad. The latter could work as low as 50 KC, but peaked closer to 100. The output filter can be two 1000-turn movable honeycomb coils rather than homemade coil of first article. 36 inch panel on the experimental set shown in RA, Dec '24 (X). It's the multi-page followup article on P17-19 to the Oct '24 construction. See better scheme on P18-19. 5 Filament controls and unknown IFs on this earliest Het. See two other Paul Green Supers under "Baby Grand" above. Panel 7x28 inches.

Receptrad - Green

n / a

Troubleshooting the Super-Het

December 1924

8 - 199 or 201A

7 x 28

Radio Receptor or Silver Marshall

Cylindrical or Square

100 or 50

"Comunited Iron" or Steel

Possible Honeycomb Coils or Air

Paul Green

" " "

RA - October 1924 - P9 - Construction

RA - October 1924 - P9

Pictured with enclosed Acme tuning capacitors. Two filament controls on final design. Two makes of IFs on the Dec. final version: Silver Marshall or Receptrad. The latter could work as low as 50 KC, but peaked closer to 100. The output filter can be a commercial unit or two 1000-turn honeycomb coils [movable from 1 to 6 inches] rather than homemade coil of first article. 7x36 inch panel on the experimental set shown in RA, Dec '24 (X). It's the multi-page followup article on P17-19 to the Oct '24 construction. See better scheme on P18-19. Five filament controls and Silver-Marshall IFs on this Het. See two other Paul Green Supers under "Baby Grand" above. Panel 7x28 inches.

51 450

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

R. E. L.

Radio Electric Laboratories

R. E. L. Units

August 1927

Robert E. Lacault

New York City

RN - August 1927 - P177 - Plug-in Coil

The REL Unit is specified for the Strobodyne. See "Lacault", "Madison", "Phenix", "Ray-Dee-Artcraft", and "Ultradyne"

R. E. L. 9

" " " " " " " " "

All Wave R. E. L. 9

February 1928

8 x 24

2 - Drum

Robert E. Lacault

" " " " "

RN - May 1928 - P1295 - Complete

RN - February 1928 - P908 - Construction

RN - February 1928 - P908 - Layout & Scheme

Described in the Feb '28 RN and "Spring '28" RLG issues. Lacault's book "Super Heterodyne Construction and Operation through Consrad Co., Inc." ad in RLG June '24. See "Lacault", "Madison", "Phenix", "Ray-Dee-Artcraft", and "Ultradyne"

Reliable

Reliable Radio Mfg. Co.

Intermediate Frequency Transformers

September 1925

PR - September 1925 - P278 - "New Products"

Rieger-Bailey

Rieger-Bailey Co. of America, Inc.

Type SR Radio Frequency Transformers

PNF

February 1924

n / a

Rieger-Bailey

(Vertical Tuna Can)

Air

Philadelphia

PR - February 1924 - P84 - Transformer

Have ad from PR March 1924 Pg 58. (X) "…sharp peak of 10, 000 meters…". Thought not stated, very likely air core. Says "Super-Heterodyne 'The Rolls Royce of Reception'". Price $7.00. Address at 539 Real Estate Trust Building, Philadelphia.

" " " " "

" " " " " " " " " " "

Type "RBC" A - Radio Frequency Transformer

PNF

May 1924

n / a

" " " " "

" " "

" "

Air

" " " "

CRCB - May 1924 - P146 - Transformer

Ad from CRCB May 1924 Pg 146. (X) "30,000 cycles". Says "Super-Heterodyne 'Aristocrat of Radio'". Price $8.50. Address at 815 1/2 Real Estate Trust Building, Philadelphia.

" " " " "

" " " " " " " " " " "

RBC KM Filter, Oscillator Coupler, & Matched Transformers

December 1924

" " " " "

Vertical Tuna Can

" "

Air

" " " "

PR - December 1924 - P82 - Kit

Shielded in nickeled brass case. Likely 30 KC Ad references use with 8 tubes.

Remler

Remler Radio Mfg. Company

Remler Super Kit

May 1924

n / a

Remler

Cylindrical

Iron

Air

(Gerald M. Best)

San Francisco / Chicago

R - June 1924 - P5 - Kit / Parts

R - January 1931 - P20 - Remler Super-Het History

"Type 600" peaks at 6700 meters - 45 KC according to QST, Dec '24, P9, Transformer "Type 600" statistics only. The kit is... "Type 600 IF", "Type 610 Tuned Stage Transformer", & "Type 620 Coupler Unit" [a variometer]. The 600 was iron core and 610 with outboard condenser attached was air. Advertised May thru June 1924 as "Remler Radio Mfg. Company, San Francisco-Chicago". Radio, Jan '31, P20: Remler Super-Het History. Elmer Cunningham, who had made a mark in the radio world in the manufacturing of Cunningham brand radios tubes, founded Remler in San Francisco in 1918 along with Thomas B. Gray and Ernest G. Danielson. Cunningham came up with the name "Remler" for the new company by spelling his first name backwards and adding an extra "R" for "radio" to the end of it. They started by making radio parts, sockets, switches, and other small components. By 1922 Cunningham had dropped out and although it's products were still branded "Remler," the company was taken over by Remler's partners and called the Gray and Danielson Mfg. Co. The Remler lab had been experimenting with the Super Het circuit since 1922. In May 1924 they produced the first of their line of high quality super-heterodyne radio receivers. The 45KC version was closed out, according to an ad in the Chicago Salvage Catalogue, in summer 1926. The Infradyne was right around the corner. See the many Remler hybrid sets listed just below "Remler".

" "

" " " " " " " " " "

Best's Original 45,000 Cycle Superheterodyne

May 1924

8 - 199

6 x 26

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Radio - May 1924 - P10 - Construction

Radio - May 1924 - P11- Scheme

Maximum efficiency with C299 tubes. CRCB, Fall '25, P57: "IF 600", "Tuned Stage 610", and "Balanced Coupling Unit". Telmaco Catalogue - Dec 1925 - P27 - Complete. CHECK THIS: See Note 21, P49…possibly the same??? (It has "C" bias battery.) Also see Note 21.

" "

" " " " " " " " " "

Best's Original 45,000 Cycle Superheterodyne - 2nd Generation

September 1924

8 - 199

6 x 27

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Radio - September 1924 - P10 - Construction

Radio - September 1924 - P11- Scheme

Some slight wiring differences from 1st generation. Front and base panels lengthed by one inch to add binding posts to the front right. The battery on-off switch was moved to the right-hand side. There were additional phone jacks placed on the front panel. The output jack are arranged across the front panel, rather than vertically as is the 1st generation. One of these disconnects the voltmeter from the radio's circuit so that flexible leads with clips might be used to test the "C" battery, etc. If you find a General Electric Wayne door bell transformer and a 201A tube socket for the last stage, it is a modification to the last audio, which includes two variable 25 ohm Cutler Hammer resistances and a 200 variable potentiometer in the tubes filament circuit. A nine volt battery is used in the grid circuit of that same 201A. The 25 Henry primary of the door bell transformer in conjunction with a 2 microfarad capacitor completes the improvement for the high voltage (120 v.) audio stage.

" "

" " " " " " " " " "

Best's Improved 45,000 Cycle Superheterodyne

January 1925

[7] 199 & [1] 201A

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Barawik Co. Catalogue - Fall 1925 - P10 - Complete

TR - January 31, 1925 - Front Cover - Construction

TR - January 31, 1925 - Scheme - Front Page

Seven 199 tubes & one 201A tube used. Construction article in "The Radio" (Philadelphia Evening Public Ledger) published January 31, 1925. This panel is a 7x20 inch Celeron. Construction in Radio (January 1925 - P10) shows Remler 600 / 610 (iron-core) IFs, but can use "Baldwin-Pacific 25, All-American, Branston, Jefferson, Phenix, Receptrad, or Silver-Marshall". Barawik, Fall '25: $62.50. Possible layout from Chicago Evening Post in Barawik, Fall '25 (33). 7x21 inch panel in Barawik.

" "

" " " " " " " " " "

Best 45 K.C. Superheterodyne

Spring 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

CRCB - Spring 1925 - P126 - Layout

Scheme and layout on P126 of CRCB for Spring 1925 (Vol 6 #1) and brief description on P123. Assumed to be a "Best".

" "

" " " " " " " " " "

Best 45,000 Cycle Superheterodyne

April 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

American Radio Mfg. Catalogue - April 1925 - P13 - Complete

Catalogue ad says "Completely wired $108." "The Master of the Air." "Adopted by February 1925 Popular Mechanics magazine." "Late 1925 model."

" "

" " " " " " " " " "

Best 45,000 Cycle Superheterodyne Adapted to 201As

April 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

American Radio Mfg. Catalogue - April 1925 - P13 - Complete

R - May 1925 - P 38 - Conversion instructions.

R - May 1925 - P 38

This is the "Improved" 45,000 cycle version. Can use Pacific No. 25 IFs. See Baldwin-Pacific Company above. See immediately above for catalogue info.

" "

" " " " " " " " " "

Improved G. M. Best 45,000 Cycle Super-Heterodyne

May 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

From "RadioRog": "The front panel of the radio has the label 'Best Super Heterodyne.' The radio contains 8 C-299 tubes. I also got the blueprint with the radio. On the print it states, 'Improved G. M. Best Super-Heterodyne,' with the name 'I. J. Cooper Rubber Co., 12-20 North Jefferson St., Dayton, Ohio'. The print was drawn on 5/14/25 by Jackson.

" "

" " " " " " " " " "

Modified Best Superheterodyne

[5] 201A & [3] 199

Remler

Cylindrical

Iron

Air

Gerald M. Best

San Francisco / Chicago

RN - Note 21

See Note 21. Used 5-UV201A and 3-UV199s.Baseboard and no shielding. Could have Remler, General Radio 271, Jefferson 150, Silver Marshall 60 KC, Baldwin-Pacific Shielded IFs. 7x20 inch panel.

" "

" " " " " " " " " "

Best Modified Superheterodyne Baseboard Model

(Fall 1925)

5 - 201A & 3 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

Three-dial Super. See Note 21. "All Wave". Used UV199s.Completely brass shielded. Could have General Radio 271, Jefferson 150, Silver Marshall 60 KC, Baldwin-Pacific Shielded IFs. Remler NOT mentioned! But, Best mentioned in the article that the IF should be between 40 and 50 KC, which, at 45 KC, would be perfect for the Remler IFs. Maybe didn't want to create conflict of interest. Sub-panel is 16 gauge brass and is 7x16. Brass shields were used to sepaarate various sections of the radio inside the case. Adapted to a long wire outdoor antenna. A hand-wound "loading coil" was used to compensate for various lengths of antenna wire starting at 75 feet.

" "

" " " " " " " " " "

Best Modified Superheterodyne Shielded Model

(Fall 1925)

7 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

" "

" " " " " " " " " "

Six Tube Super-Heterodyne With One Crystal Detector

August 1925

6 [+ 1] *

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

R - August 1925 - P37

* Used one Carborundum detector in place of the second detector tube.

" "

" " " " " " " " " "

(Nine Tube Super Heterodyne) ^

1925 ^

9 ^

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

(Kit)

$90.00 ^.

" "

" " " " " " " " " "

Best Remler 8-Tube Super

September 1925

[5] 201A & [3] 199

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Barawik Co. Catalogue - October 1926 - P24 - Complete

(R - September 1925 - P?? - Construction)

Used 5-UX 199s and 3-UX 201As. "Of course, 199s can be used through out." Construction articles ask for a 7 x 20 inch (non-standard panel). Barawik sold a 21 inch panel with the set. Radio also referenced in R - May 1926 - P38 - "Ask the experts".

" "

" " " " " " " " " "

Barawik's Portable Remler - Best Super

Fall 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Barawik Co. Catalogue - Fall 1925 - P11 - Complete

Barawik brought together these parts: Remler Superhet and the "Acre" (brand) cabinet has built-in loop (in the cover) and speaker. What's unique about the radio chassis is that it's just 5 inches deep. The design put eight 199-style "spring sockets", mounted on a long, narrow bakelite strip, mounted over (with use of Benjamin brackets) the IF and audio transformers; making the set very slim. The tubes, due to the type of the sockets in the picture, might have been "UV"-style. The case, which is 22x15x7 inches, has black leather grained Keratol covering. Center tapped loop antenna is 21 inches tall which is the cover for the case. Uses Hoyt voltmeter in the center of the panel. Barawick advertised it again in the Spring of 1926 on page 13 (X). Prices were the same. Barawik price: $69.50 plus $39.75 for case, tubes, batteries, Utah speaker unit. Weighs 35 lbs in all. The case by itself is $15.95. 7x21 inch panel.

" "

" " " " " " " " " "

Eight Tube Superheterodyne

Fall 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Randolph catalogue - Fall 1925 - P16 - Wired

Is this model were the last tube is a 112?

" "

" " " " " " " " " "

Remler "8" Tube Super-Heterodyne

Fall 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Columbia catalogue - Fall 1925 - P15 - Complete

This compact set has 8 UX199s with six centered on the baseboard in a row and two 199s between the front panel and the audio transformers. Picture shows what appears to be the backside of a small panel meter. None are in the parts list, but a "Connecticut Switch" is listed and must be that part. List $72.25. Columbia price $42.90. 7x21 inch panel.

" "

" " " " " " " " " "

Superheterodyne with Plug-in Coils

December 1925

[5] 201A & [3] 199

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

PR - December 1925 - P??

PR - December 1925 - P564

L1 & L2 are changeable Plug-In Coils connected to the Oscillator Coil. Used five UV-201As and three UV-199s. Used Remler "611", General Radio "271", or Silver "Untuned" IFs.

" "

" " " " " " " " " "

Best 45,000 Cycle Superheterodyne for use with ABC Eliminators

December 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

R - December 1925 - P?? - Construction

R - August 1926 - P33

Changes for use with ABC eliminator.

" "

" " " " " " " " " "

Best 45,000 Cycle Superheterodyne Deluxe Model DL-5

December 1925

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Telmaco Catalogue - December 1925 - P27 - Complete

This set Used UV199s. Sockets in a line on top of sub-panel. IFs under the sub-panel. Panel 7x26 inch.

" "

" " " " " " " " " "

Best 45 K.C. Superheterodyne With Impedance-Coupled Amplification

Spring 1926

Remler

Impedance-Coupled

Iron

Air

Gerald M. Best

" " " " " " " "

CRCB - Summer 1926?? - P120 - Explanation

CRCB - Summer 1926?? - P100 - Layout

Used Impedance Coupled Amplification.

" "

" " " " " " " " " "

Best's Five Tube Super

September 1926

5 [+ 2] **

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

(R - October 1926 - P?? - Construction)

(R - October 1926 - P??)

Three-dial Super. ** Used two Carborundum detectors in place of both detector tubes. Lite construction article in RN, Sept '26, P254. RN, Sept 26, P255. 10x20 inch panel.

" "

" " " " " " " " " "

Best Remler 8-Tube Super

September 1926

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Barawik Co. Catalogue - October 1926 - P24 - Complete

Used 5-UX199s and 3-UX201As with a 7x21 inch panel in the "New Radio Buyer's Guide" catalogue.

" "

" " " " " " " " " "

Best-Remler Portable 8-Tube Super

October 1926

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Barawik Co. Catalogue - October 1926 - P29 - Complete

Used UX199s with a 7x21 inch panel. Set is only 5 inches deep. Promoted as "portable'. The "New 1926 Barawik" (Oct.) catalogue shows a real portable! Used an "Acre Portable Radio Case" 22x15x7 inches. Has antenna as part of the case. 21 inches high center tapped. See Randolph, Fall 1927, P22?? for good drawing. 7x21 inch panel.

" "

" " " " " " " " " "

Best Shielded 9 Tube Superheterodyne

October 1926

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

(R - October 1926 - P?? - Construction)

(R - October 1926 - P??)

three-dial Super. "Has a stage of RF amplification ahead of the first detector". Used long wire antenna or loop.

" "

" " " " " " " " " "

Improved Remler 8-Tube Super

Fall 1926

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Randolph Radio Catalogue - Fall 1926 - P24 - Complete

Used 8-UX199s, or 7-UX199s and 1-UX201A or 1-UX-120. Might find this set with all UX201As which was special order. 7x21 inch panel.

" "

" " " " " " " " " "

Best's Six Tube Super

November 1926

6 [+ 1] *

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

R - November 1926 - P37 - Lite Construction

R - November 1926 - P37

three-dial Super. * Used one Carborundum detector in place of 2nd detector tube. Lite construction article in R, Nov '26, P37. 10x20 ?? inch panel.

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" " " " " " " " " "

Best Shielded 9 Tube Superheterodyne Modified)

November 1926

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

R - November 1926 - P35 - Lite Construction

R - November 1926 - P35

Modified: Two of the three tuning condensers are "geared in tandem". "Has a stage of RF amplification ahead of the first detector". Used long wire antenna or loop. See above.

" "

" " " " " " " " " "

(1927 Super)

March 1927

Remler

Cylindrical

" "

Gerald M. Best

" " " " " " " "

(Note 4 & 13)

Used Silver-Marshall parts.

" "

" " " " " " " " " "

Improved Best 45 K.C. Super Nine

September 1927

7 - 199 & 2 - 112 or 171

7 x 21

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

Harry Alter Catalogue - October 1927 - P57 - Complete

CRCB - September 1927 - P158 - Construction

CRCB - September 1927 - P161

H-C cat, Late Summer '27, NEW Knight K200 audio and Knight Push-Pull, 7-199s & 2-112 or 171s, complete $44.75. Alter has a 26 inch panel H-C has 7x21 inch panel. Fall 1927 Haskell Radio [$44.75] had 7x21 inch panel for a 24 inch cabinet.

" "

" " " " " " " " " "

Citizens [Call Book] Super Nine

November 1927

6 - 199, 1 - 201A, & 2 - 112

7 x 26

2 - Drum

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

American Radio Co. - Sept 1927- Catalogue #117 - Pg42 - Complete

CRCB - November 1927 - P97 - Construction

CRCB - November 1927 - P97 - Scheme & Layout

This radio constructed and tested by Citizens Radio labs. Tryman Push-Pull audios. 6-199s, 1-201A, & 2-112. Harry Alter Catalogue, October 1927, P57, Complete.

" "

" " " " " " " " " "

New Remler 45 K.C. A.C. Super

Fall 1927

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

H-C Catalogue - Late Summer 1927 - P54

CRCB - January 1928 - P142 - Construction

CRCB - January 1928 - P143

Also described in Radio Broadcast (Fall 1927). From H-C cat, Late Summer '27: "…fully electrified and designed for complete A.C. all electric operation." New Remler Universal Drum Dials. Remler 600 series IFs. Used lots of S-M parts. Used 6 - 5 prong tube sockets for 1.5 volt AC tubes.and 2 - UX sockets. $86.54 complete." 7x24 inch panel. R, February '28, P43 shows parts. Also, believe shown in the Allied catalog for late 1928??? 7x26 inch panel in Allied, late '28: $96.40.

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Shielded Grid 115 K.C. Super-Heterodyne

Fall 1927

Remler

Cylindrical ??

115

" "

Gerald M. Best

" " " " " " " "

CRCB - January 1928 - P198

R - January 1928 - P (??) - Construction

R - January 1928 - P (??)

Also in CRCB (Fall 1927). Used the following 115 KC Remler Interchangeable Inductances: 1 - # 550, 1 - # 570, 2 - # 560, 1 - # 512, and 2 - # 614. Has 16 Remler # 50 tube sockets and 1 Jewel 0 to 5 volt meter. Nine tubes, four of which are Screen Grid. Two are used in the Tuned RF stages and two in the IF stages. Seven copper shieldscover all tubes and inductances. H-C, Late Summer '27, $82.50 complete. R, Feb 1928, P46 Ad Complete / Parts. RSWC, Oct '28: List $163.95 Net $96.40 Complete Kit of Parts. 7x26 inch panel.

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Seven Tube Shielded Grid 115 K.C. Super-Heterodyne

March 1928

Remler

" "

Gerald M. Best

" " " " " " " "

R - March 1928 - P27

" "

" " " " " " " " " "

Modified Shielded Grid 115 K.C. Super-Heterodyne

March 1928

9 [5 *****]

Remler

" "

Gerald M. Best

" " " " " " " "

R - March 1928 - P16 - Modifications

R - March 1928 - P17

****** - Modified to use five tubes for local, adding regeneration, and replacing 199s with 201As.

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Revamped Best 45 K.C. Super

October 1928

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

R - October 1928 - P23 - Construction

Adds Shielded-Grid tube [UX222] as 1st RF stage. Used 1-222, 5-199, 2-201A, and 112A or 371A. RF and oscillator coils are shielded in individual copper compartments which are the same as used in the 115KC receiver. Used 12 tube sockets where 2 RF coils and 1 oscillator coil take three of the sockets. Article shows stranded wiring rather than square buss. 7x26 inch panel.

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Remler 29 Screen Grid Super

September 1928

Remler

Short Cylindrical

115

" "

Gerald M. Best

" " " " " " " "

CRCB -September 1929 - P41 - Complete

CRCB - September 1928 - P66 - Lite Construction

CRCB - September 1928 - P68 - Layout & Scheme

Michael Feldt has a beautiful one. He says it's a small Infradyne (Don't think so ???). Another schematic in CRCB, March 1929, P152 (Note 14). Advertised as the Superhet with "Unit Construction" which means the baseboard and the metal sub-base for the IFs and tubes are rivetted together. Only a very few wires on the bottom are needed to be connected to complete the set, getting around the RCA patents. Those wires are shown in the CRCB article. "Three shield-grid IFs. Entire RF, IF, and audio stages are shielded in copper. RSWC, Oct '28: List $131.25. Net $77.17. R, Oct 28, P8 & 9: Complete kit [list] $131.25. Allied, late '28: $77.17 and a Remler 950 Power Amp with "B+" and 4 power tubes at $67.03. Barawik Cat., Sp & Summer '29 says the 712 Unit (about 90% of the entire radio) is "completely wired and inspected before leaving factory...". An accessory is the Remler 950 which uses a UX250 tube. $77.17. Wiring hidden in steel sub-base. Lacquered copper case. CRCB article shows scheme and parts list for tha associated Power Amplifier. Uses standard or Lignole 7x26 inch panel. Factory at 260 First Street, San Fran.

Remler Infradyne

" " " " " " " " " "

Remler Infradyne Amplifier No. 700

August 1926

n / a

Remler

Module

3490

Air

E. M. Sargent

" " " " " " " "

R - August 1925 - P5 - Amplifier

SOME ?? ad says: "Link…with your Neutrodyne or TRF…". NO reference to Super Hets. Controls mounted on a Bakelite panel. The amplifier enclosed in a polished and lacquered copper case. Sargeant won a contest in Radio (1923) for designing "a long distance receiver that is extremely selective and sensitive for wavelengths 180 to 750 meters. Full details are given...[in the Sept 1923, Radio]". No reference to Super there. Lists for $25. See Sargent-Rayment below. Also see "Infradyne DX" above.

" " " " "

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Sargent Infradyne Super Heterodyne

August 1926

6 - 201A & 4 - 199

(7 x 30)

1 - V

Remler

Module

3490

Air

E. M. Sargent

" " " " " " " "

RB - October 1926 - P541

R - August 1926 - P11 - Construction

R - August 1926 - P11 & 46

Designed by E. M. Sargent and L. C. Rayment over a two year period going through over 500 variants. Rayment improved the Infradyne enough that Sargent included his name officially in Radio magazine in November 1926. This radio is a straight Super Het; has no 5 tube TRF conversion. Differs from the September 1926 version in that it uses the Thorola doughnut-style coils and Ameritran or Silver-Marshall audios. The radio was one of the first to operate on the SUM of the heterodyning and not the DIFFERENCE, meaning the IF module amplified "short waves [in the range of 95 meters (3490 KC)] instead of long waves [10,000 (30 KC)] as in the typical superhet and no harmonic. No long wave distortion or noises." Resulting in only one dial setting for each station. The set uses 10 tubes: an oscillator, two stages of RF amplification, first detector or mixer, three stages of 95 meter amplification, second detector or de-modulator, and two stages of AF amplification. There are six UX201As and four UX199s, three of which are in the module. Parts layout different than the Revised version below. Barawik, Summer '26: $96.50 and Oct '26: $83.15. Model 700 Infradyne Amplifier module lists for $25. There is the first Citizen's Radio Call Book version. The only difference between the original and the CRCB version is a Jones plug for battery connections rather than terminal posts on the original. Randolph Radio Catalogue - Fall 1926 - P22 - Complete. Also, see Remloc Radio below. See "Sargent Flivver". Also see "Infradyne" above and "Remloc Remler Infradyne" below .

" " " " "

" " " " " " " " " "

Sargent-Rayment Revised Infradyne

September 1926

6 - 201A & 4 - 199

7 x 28

1 - V

Remler

Module

3490

Air

E. M. Sargent & L. C. Rayment

" " " " " " " "

Randolph Radio Catalogue - Fall 1926 - P23 - Complete

CRCB - September 1926 - P137 - Construction

CRCB - September 1926 - P142

This is the second Citizen's Radio Call Book construction. Layout different than August version! Used Camfield Duoformer (binocular) coils rather than Thorola doughnut-style coils. Camfield Oscillator coil. Four UX201As, four UX199s, one UX200A, and one UX112. See RN Oct '26 P356 for construction. Also, see "E*M*Sargent's Official Infra*Dyne Manual - Oct 1, 1926 - First edition - 25,000 copies" Chicago Salvage, Nov '26: $75. 7x28 inch panel.

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Sargent-Rayment Improved Infradyne

November 1926

10 [5 *****]

6 - 201A & 4 - 199

7 x 28

1 - V

Remler

Module

3490

Air

E. M. Sargent & L. C. Rayment

" " " " " " " "

R - November 1926 - P21 - Construction

R - November 1926 - P22

Improved filament and volume control, new three-gang condenser, and a more compact arrangement of parts. Thorola Doughnut coils still used here; although, an ad for Camfield's Duoformers appears on page 13 in this same November issue. I believe this article should have appeared in the September '26 issue as it's outdated even by Sargent's standards. His book about a later version was out on October 1st. RN, Dec '26, P655, Construction: Appears to be a one-dial Infradyne at first glance. Panel remains at 7x30 inches.

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Sargent-Rayment Infradyne Combination Set (Combines with second 5 tube TRF set)

November 1926

10 [5 *****]

6 - 201A & 4 - 199

7 x 28

1 - V

Remler

Module

3490

Air

E. M. Sargent & L. C. Rayment

" " " " " " " "

RN - December 1926 - P655 - Construction

RN - December 1926 - P655

Hybrid. ***** Used the five tube Infradyne Combo with a second 5 tube TRF set to make a 10 tube Infradyne. RN, Dec '26, P655, Construction: Appears to be a one-dial Infradyne at first glance. R, Nov '26, P21: Excellent construction article.

44 494

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Remler - American Beauty

American-Beauty

"American-Beauty Custom Built Remler Superheterodyne"

(1925)

8 - 199

(7 x 24)

1 -V

Remler

Cylindrical

Iron

Air

Gerald M. Best

American-Beauty

" " " " " " " "

Taken from eBay 8/2006. Far right of the front panel has this: "American - Beauty" Under that there is an engraved rose blossom and beneath that is "Custom Remler Made" with Remler in larger letters. Under that is the word "Superheterodyne". Panel is dark red [mahogany] with meter on right, front half. Used 199s as with Remlers. Appears to be well made with a sub-chassis of bakelite. No other information known.

Remler - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Remler

Cylindrical

Iron

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Remler - Citizens Radio Call Book

n / a

45 Kilocycle Superheterodyne

Fall 1925

6 -199 & 3 - 201A

Remler

Cylindrical

Iron

Air

Gerald M. Best

New York City

CRCB - Fall 1925 - P51 - Construction

CRCB - Fall 1925 - P54

Used six UV-199s and three UV-201As. Used Remler 600 & 610 IFs.

Remler - Citizens Radio Call Book

n / a

Citizen Super Eight

March 1927

199, 112, & 171

7 x 26

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " "

CRCB - March 1927 - P95 - Construction

CRCB - March 1927 - P97

Have eBay pictures to use. Used Remler 600-610 IFs and dials and Silver Marshall oscillator coil. The eBay set shows at least two standard General Radios audios, where the CRCB article listed three Silver Marshall audios.

Remler - Citizens Radio Call Book

n / a

Citizen Super Nine

September 1927

7 - 199, 1 - 201A, & 1 - 112

7 x 26

2 - Drum

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " "

American Radio Co - Catalog #117 - September 1927 - Pg42

CRCB - November 1927 - P97 - Construction

CRCB - November 1927 - P99 - Scheme & Layout

Used Remler 600-610 IFs and parts, Tyrman drum dials, Camfield 620 oscillator coil (looks like Remlers), and a Tyrman Audio Frequency Transformer and Tyrman Push-Pull Audios. Tyrman transformer cans are eight sided with TRC logo on the top. Due to the Push-Pull output, it had nine tubes. Might have used the Silver-Marshall Oscillator Coupler rather than the Camfield 620. Harry Alter Cat, Oct '27, P57, Tyrman audios, 8-199s & 1-201A, complete $63.94. American Radio Co Catalog #117 for Sept 1927 indicated this set and the Harry Alter set, previously mentioned, did NOT have push-pull audio output, rather a single 201A tube.

Remler - Citizens Radio Call Book

n / a

115 K.C. Shielded Grid Super

March 1929

(Remler)

115

Gerald M. Best

New York City

CRCB - March 1929 - P152 - (Note 14)

Likely Remler.

Remler - Hetro-Five

n / a

Hetro-Five Superheterodyne

January 1926

5 - 201A

7 x 26 or 7 x 24

2 or 4

Remler

Cylindrical

Not Used

Air

C. E. Butterfield

Chicago

Radio Review - January 1926 - P27 - Constructions

Radio Review - January 1926 - P27 - Scheme

Autodyne principle borrowed from the Tropadyne developed by Fitch. Used a bridged oscillator developed by Pressley and used in Silver's Autodyne Super. Used two tuned IFs (Filter units). "Remler 610 IFs a must" as the Remler 600 will not work in this radio. Two main tuning dial on the front panel might have an additional two that would be used to tune the Remler Filter units, if the builder improvised incorrectly. Used a homemade "Figure 8" coil. Text said it was not easy to make. Look for it. Non-reflexed, non-radiating, & non-regeneration. Original article from The Chicago Evening Post. Also, see RN "Superheterodyne" book. See Note 21 below. A panel of 7x24 is usable if you tighten up the parts.

Remler - Popular Mechanics

n / a

Super-Heterodyne Eight

February 1925

7 - 201A & 1 - 200A

7 x 26

1 -V & 1 - MA

Remler

Cylindrical

Iron

Air

F. L. Brittin, PSM Radio Editor

Chicago

Barawik Co. Catalogue - Spring 1926 - Complete

RR - July 1925 - P3 - Construction

RR - July 1925 - P812 - Wiring Diagram [No scheme]

My reprint of the February and March 1925 articles has construction details, layout, but no schematic. It should also be in the RN Superheterodyne Book. See Note 21. Neat looking set with two tuning dials, five filament controls, two meters on the front panel. Had a Jewel two-position volt meter; 0-10 and 0-100. Used 201As and Remler parts. Two three-tube sockets used in March 1925 might differentiate this set. Also, look for a single flashlight battery mounted to the baseboard for bias. Used external three tap loop made by Mathiesen. Loop antenna attached through a hole on cabinet top. Metal panels shield several sections inside the radio. Fall '25 Barawik catalogue ($99.50 with dual meters). The outward appearance of this radio is the same as the Spring 1926 version, but the layout is different. "The Buy of a Lifetime at $125 (complete)". Taken from my copy of the magazine reprint: "How To Build POPULAR MECHANICS’ Magazine SUPERHETERODYNE EIGHT. Reprint from February & March 1925 issues. Mr. F. L. Brittin, Radio Editor of Popular Mechanics Magazine and designer of the Superheterodyne Eight, will be glad to answer any questions regarding the instrument. 200 East Ontario Street, Chicago, Ill."

Remler - Popular Mechanics

n / a

Super-Heterodyne Nine

Remler - Posth

Radio Doctors Inc.

New 8 Tube Super-Heterodyne [SH-55A]

December 1924

8 - 201A

8 x 32

1 -V & 1 - MA

Remler

Cylindrical

Iron

Air

"Mr. Posth"

Chicago

RA - December 1924 - P41 - Construction

RA - December 1924 - P45 - Blueprint & Scheme

Article in RA, Dec. 1924, was written by John B. Rathbun. He did not develop the Super. It is NOT a Best designed Remler. From the description of the set's IFs, it's likely they are Remlers. Schematic in Radio Age, December 1924 on page 46. Standard Super construction. UV200 detector is not recommended here. 8x32 panel.

Remler - Radio Owners Service

Radio Owners Service Company

ROSC Remler Superhet Eight

PNF

October 1925

8 - 199

7 x 20

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

San Francisco / Chicago

Radiocast Weekly - October 18, 1925

A good way to help distinguish this kit from most is to see if it has one of these three General Radio Oscillation Coils: # 277A, 277B, & 277C. This is different from most remlers that used the Remler 620 Oscillation Coil. Parts list recommended three small Benjamin tube sockets and five large Benjamin sockets. Recommended one Weston voltmeter. Used Remler IFs. Could have Thordarson, All American, Lyric, or Karas audio transformers. Complete kit at $82.75 or $89.50 (special audios) sans cabinet and matched tubes at $2.50 each. RSOC is addressed at 660 12th Street, Oakland.

Remler - Randolph

Randolph Radio Corporation

Super-Heterodyne

December 1924

Remler / Columbia

45 / 38

Gerald M. Best

" " "

RN - December 1924 - P955 - Complete

Used either Remler or Columbia (as shown in picture) IFs. Randolph was a parts clearing house selling cheap kits. $59.75. 7x30 inch panel.

Remler - Scott

n / a

Original Scott Super 8

November 1924

8 - 199

(7 x 28)

(1 - SV)

Remler

Cylindrical

Iron

Air

E. H. Scott

Chicago

This is Scott's first super and the duplicate he built while in New Zealand. Originally, he built a straight Remler Best. Modified it to use two 600s and two 610s each with a Remler variable capacitor across them. Provided better selectivity. This is what appears to have made the Scott such a fine Super. Information from the book, "E. H. Scott...The Dean of DX, Second Edition 2002" by Marvin Hobbs. Remler "Type 600" peaks at 6700 meters - 45 KC according to QST, Dec '24, P9, Transformer "Type 600" statistics only. The basic Remler kit is...three "Type 600 IF", "Type 610 Tuned Stage Transformer", & "Type 620 Coupler Unit" [a variometer]. The 600 was iron core and 610 with outboard fixed condenser attached was air. Used a small vernier on the front panel for the oscillator circuit.

Remler - Scott

n / a

Original Scott Super 9

March 1925

9 - 199

(7 x 28)

(1 - SV)

Remler

Cylindrical

Iron

Air

E. H. Scott

Chicago

This is Scott's second super was built as a duplicate just before he left New Zealand. Scott had a couple of extra 199s he added to the original Super 8 and this duplicate, creating a two tube parallel audio output, making the tube count 9 on each Super. Information from the book, "E. H. Scott...The Dean of DX, Second Edition 2002" by Marvin Hobbs. Used a small vernier on the front panel for the oscillator circuit.

Remler - Southern Electrical

Southern Electrical Co.

Southern Electrical Superhet

(1925)

5 - 199 & 3 -201A

7 x 20

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

Southern Electrical Co.

Set custom-built Remler by the Southern Electricl Co. but no location found. Has metal disk on front panel showing wings and the words, "The One Bright Spot". Typical Remler. The last detector and the two audio stages were 201As. Nothing else known at this time.

Remler - Standard

Standard Radio Company

New 1926 Model 8 Tube Super Heterodyne

Spring 1926

Remler

Kansas City, Mo.

Standard Radio Catalogue - Spring 1926 - Back Cover

Built with Remler parts. 7-UV199s & 1-UX120. "Precision Built Best's 45, 000 Cycle Circuit". "The Greatest Receiver Of All." "$125". Any 8 tube Super built for $25 extra. Standard offered a huge cabinet for this radio that was 36 inches long.

Remler Infradyne - Remloc

Remloc Radio Company

Sargent Infradyne Super Heterodyne

August 1926

Remler

Cylindrical

" "

E. M. Sargent & L. C. Rayment, developers

See Remler "Sargent Infradyne" (August 1926) above. This set is displayed at the Radio Boulevard in Virginia City, Nevada. Web site indicates it is not original due to the Thorola donut-style coils and that Silver Marshall coils were standard. Not true. Camfield Duoformer (binocular) coils, which might look like SM coils to some, were incorporated into the second design version in September 1926. The Thorola donut coils were standard in the August 1926 version. This is likely the CRCB version as it does not appear to have the pair of terminal strips on the back, right side of the baseboard and would have a Jone connecting plug. Presumably, this company is a typical set-builder that assembled superhets for resale. Because the name incorporates part of the Remler name and is in San Francisco, it's possible it was a Remler company building their own sets.

Resas, Inc.

10,000 Meter Super-Heterodyne

July 1924

Resas

New York City

RN - September 1924 - P398 - Kit

RN: "The RESAS Kit comprises 3 Long Wave Transformers, 1 Coupler for 10,000 meters, and I Oscillator Coupler." RWI July 26, '24: "The Super-Het that got Scotland. Special Kit Offer $39.95 Super-Sales-Service Factory: 112 Chambers St."

Resistance Coupled - Popular Mechanics

Resistance Coupled - Popular Radio

Rhodes

St. Louis

(From Jim Collings) Rhodes was sold at AWA auction in 2000. Apparently came from St. Louis. Nothing more is known of this Super.

Richards

(Richards Superheterodyne Reflex)

January 1926

PR - January 1926 - P?? - Construction

This radio referenced in PR - March 1926 - P6. Shows Super Hets in all-aluminum cabinet.

Richardson

Richardson Radio Inc.

Richardson Replacement Parts for Super Heterodyne

October 1924

n / a

Richardson

D. W. Richardson

New York City

RN - October 1924 - P526 - / Kit / Parts / Blue Print

"Oscillo-Coupler, Tuned Intermediate Transfer, and R. F. Transformer - 12,000 meters." ???? Incorporation notice RWI, May 3, '24, P26: "Richardson Radio, New York City, 250 shares common stock, no par value; D. W. Richardson, I. O. Blake, and L. O. Blake, Jr."

" " " "

" " " " " " "

Richardson 'Kan't-Go-Wrong' Super-Heterodyne 9

November 1924

" " " " "

D. W. Richardson

" " " " "

RN - November 1924 - P738 - Complete / Kit / Parts

Used Push-Pull audio. IFs tuned to 12,000 meters. Convert your Neutrodyne into a Super kit.

Ritz

Ritz Super-Heterodyne

May 1925

Remler

Iron

Charles Caesar Ritz

RR - May 1925 - P77 - Article

RR - May 1925 - P77

RR, May '25: Excellent pictures! Charles Caesar Ritz was associated with "Science and Invention" magazine where this set was first shown. In a huge cabinet, 38 x 28 x 8 inches, which RR, May 25, says "Of course, it is not portable…(in) that it can be carried around by hand, but is for automobile use in travel." IFs are 45 KC, therefore, likely be Remlers. Used UV199s and 15 turns, 2 1/2 foot center-tapped loop. 8x36 inch panel.

Roberts

n / a

Practical Super-Heterodyne with 199s

August 1923

6 - 199 or 201A

(7 x 24)

Pacent Honeycomb & Homemade Air Coils

Honeycomb & Mailing Tube Coils

100

Air

Walter Van B. Roberts

Princeton University, N. J.

RB - August 1923 - P340 -Construction

RB - August 1923 - P345

This is about the first homebuilt super using 199 tubes. General Radio variable condensers were recommended. Variable caps were used to tune each of the IF stages, but likely not from the front panel. Neutrodyne caps in the form of pennies set 1/4 inch apart should be used on the 201A tubes as shown. Pacent Coils and Pacent parts for Roberts Super in RB - Aug '23. One audio stage [transformer] out of the detector. This is the second circuit described in Robert's article. See "RCA - Roberts" for details of the other superhet featured.

Roberts Radio Service

Seven Tube Super Heterodyne

Fall 1924

Chicago

CRCB - Fall 1924 - P199 - Blue Print Kit Only

Their "kit" contained "four beautiful 18x28 blue prints showing schematic diagram, graphic illustration, baseboard layout, list of parts and dimensions".

Robertson-Davis

Robertson-Davis Co., Inc.

Automatic Tuning Super Six

October 1928

Robertson-Davis

Tall Rectangular

465

Impedance

Chicago

RSWC - October 1928 - P28 - Complete

CRCB - November 1928 - P74 - Complete

CRCB - November 1928 - P76

Choice of "Automatic Tuning" or "Single Dial". This is the "Auto Tune". Three stages of A-C Shielded Grid and 3 - 228 tubes. Used only 18 milliamps of "B" current. No aerial required, but aerial or loop can be used. Used new "R-D Shielded Plug-in Meloformers" numbered "661" through "666". RSWC, Oct '28: "R-D Television shortwave plug-in coils $3.53." "...can be completely assembled in eighteen minutes". The "R-D Automatic Electric Tuner"..."plays six stations automatically or any on of seven buttons cuts out all the rest except the one station desired." $27.93. Additional audio and Power Pack available. 7x21 inch Panel.

" " " " " "

" " " " " " " "

Single Dial Automatic Super Six

March 1929

" " " " "

" "

" " "

CRCB - March 1929 - P65 - Complete

CRCB - March 1929 - P66

Choice of "Automatic Tuning" or "Single Dial". This is the "Single Dial".

Roffy

Stamm-Lawson Radio Manufacturing Co.

Roffy Transformers

December 1924

Upland, Ca.

RN - December 1924 - P1077 - Parts

Ad references the circuit "Super Roffy" already published in RN.

Rosenbloom

William Rosenbloom Co.

W. R. Kit

January 1925

Rosenbloom

William Rosenbloom

Revere & Manttapan, Mass.

RTD - August 1925 - P117 - Kit

The W. R. kit has a retail price of $10 with blue prints. Good pix in RDI, Jan. 3, '25. Had various lesser circuits published in periodicals like Radio Age 1924.

" " " " "

" " " " " " " " "

Rosenbloom Portable Superheterodyne Plans

July 1925

K / BP

8 - 199

Small Weekender Suitcase

" " " " "

NIF

PNF

NIF

William Rosenbloom

" " " " " "

RRET - July 1925 - P99 - Kit & BP

These ads are directed to the radio jobber. "The design is such that the complete set can be assembled on a small baseboard and then placed in a weekend case." The W. R. kit has an intended retail price of $10 with blue prints. "It is entirely self-contained, including loop (in lid of weekend suitcase), loud speaker, and batteries. "UV-199 tubes are to be used. Very light weight - Not over 30 pounds. After vacation is over the same parts can be used for the regular set." Address: 11 Deering Road, Mattapan.

" " " " "

" " " " " " " " "

Rosenbloom Eight-Tube Superheterodyne

July 1925

" " " " "

William Rosenbloom

" " " " " "

RRET - July 1925 - P99 - Kit

"The design is such that the complete set can be assembled on a small baseboard…". The W. R. kit has an intended retail price of $10 with blue prints. UV-199 tubes are to be used.

Rowe

Noiseless Intermediate Amplifier

Summer 1926

G. C. B. Rowe

RN - Note 21

This is just a very specific series of coils and tubes designed to replace typical IF transformers. See Note 21

Rubicon

Rubicon Company

Rubicon "Navy Type D" and "SR" Transformers

Fall 1924

n/a

Rubicon

Short, Fat Cylindrical with Frame

(50)

NIF

Philadelphia

CRCB - Fall 1924 - P191 - IF Only

The Type "SR" IF transformer at about the same time as the Navy Type D. See Lewis Modern Super-Heterodyne below.

" " "

" " " " " " "

Rubicon Super Set Kit

PNF

February 1925

n/a

" " " "

" "

NIF

" " " "

RITH - June 1925 -P30 - Kit

Small ad shows a Rubicon Super Kit. "Kits to build 8 or 9 tube set, $23.50 to $138.50." Price of the basic kit went up to $33.75 between Feb. and March of 1925. PR, Feb '25, P72 is first kit reference. Also, see CRCB, Spring 1925 (Vol 6 #1), P148 for same.

" " "

" " " " " " "

Rubicon Eight Tube Super Kit

PNF

February 1925

NIF

" " " "

" "

NIF

" " " "

RITH - June 1925 -P30 - Kit

Small ad shows a Rubicon Super Kit. "Kits to build 8 or 9 tube set, $23.50 to $138.50. PR, March '25, P36 is first kit reference. Also, see CRCB, Spring 1925 (Vol 6 #1), P148 for same.

" " "

" " " " " " "

Rubicon Nine Tube Super Kit

PNF

February 1925

NIF

" " " "

" "

NIF

" " " "

RITH - June 1925 -P30 - Kit

Small ad shows a Rubicon Super Kit. "Kits to build 8 or 9 tube set, $23.50 to $138.50. PR, March '25, P36 is first kit reference. Also, see CRCB, Spring 1925 (Vol 6 #1), P148 for same.

" " "

(Heteroflex Super)

August 1925

" " " "

John G. Ryan, possible developer

" " "

RDI - October 24, 1925 - P19 - Mentioned in Qualitone Ad

(RDI - October 31, 1925 - P?? - Construction)

Used Qualitone Super Kit. Heteroflex article in August 1, '25 RDI mentioned in October 24, 1925 Radio Digest Illustrated.

Rubicon - Lewis

n / a

Modern Super-Heterodyne Type Receiver

1925

201A / WD12 & 216A or 202

10 x 30 Rubber Covered Brass

NIF

Rubicon

Short, Fat Cylindrical

NIF

Elmer H. lewis, Assoc, I.R.E.

Three-dials. From the construction booklet, dated 1925 by Norman W.Henley Publishing Co.: The three coils in the first three stages are homebuilt as is the Filter transformer. The two IFs are Rubicon Type "SR" transformers. Used seven UV201A and a 216A or UV202 in the last audio. With a slight wiring change six WD12s and two UV201As can be substituted. Front panel made of 1/16 inch brass with No. 34 sheet brass shielding deviders between the second, third, and filter/audio stages. inside the cabinet. Front of the brass panel is covered with 1/4 inch rubber panel for appearance sakes.Construction booklet has multiple full-sized construction layout and schematics. Set is 10 inches deep. See "Rubicon" above.

40 534

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Sampson - Haynes-Griffin

Sampson

Sampson Dead Spot Receiver

(Summer 1924)

7 - 201A

(7 x 26)

(L)

Haynes-Griffin

Conical

150

Air

A. J. Haynes

Sampson

Circuit likely the Simplified Superhet by Haynes. Appears to have an Oscillator Coil with external variable condenser. Radio owned by Ron Lawrence.

Sampter

Sampter Radio Corporation

Selec-Tran Transformers

July 1925

n / a

Sampter

Vacuum Tube Shaped

NIF

Brooklyn, NY

RB - August 1925 - P443 - IFs

These tunable RF transformers will fit into a tube socket. "Bakelite shielded - Moisture proof". Ad in QST July '25 P87 at $7.50 list. Also had two audio transformers that took a standard audio transformer shape for $5 list.

Samson

Samson Electric Co.

Super-Kit

September 1924

K / P

n / a

Samson

Cylindrical On Larger Square Base

60 / 100 / 300

Air

Professor Bowles, coil developer

Canton, Mass.

R - September 1924 - P72 - Parts

RN - Jan '25 shows "Samson HW-R1 Helical Wound" IF (X). IFs peak at 60 KC or 5000 meters wave length. The "HW-R1" IFs were also offered in September 1924 in 1000 meters (300 KC) and 3000 meters (100 KC). Labels on the unit's bottom showed the peak frequency. LAter ads did NOT promote anything but 5000 meteres. Ads say matched transformers are better due to the helical windings and they are never more than 87 cycles of each other and in most cases only 20 cycles. Good pix of kit in Randolph Catalogue, Fall '26. Barawick, Spring 1926: Kit $22.50. See Samson - Cotton and Citizen Callbook below.

Samson - Citizens Callbook

" " " " " " "

Impedance Coupled Super-Heterodyne

March 1927

201A, 200A, & 171

8 x 24

Samson

RF Chokes & Condensers

Impedence

Air

" " " " "

CRCB - March 1927 - P100 - Construction

CRCB - March 1927 - P104 - Layout & Scheme

This radio works more along the principle of "Band-Pass" with the passing of frequesncies between 40 to 50 KC. Used a multitude of small cylindrical RF Chokes and small flat rectangular fixed condensers, all under the subpanel. Had vertical eight-sided, double-wound tuned [filter] transformer near the top, center of the subpanel. Had horizontal double-wound oscillator coil near the top, center of the subpanel nearest the front panel. Had five "output" transformers on the left side of the subpanel, looking from the back. Lots of Amperites in filament line. Also called the "Samson Super' in an ad for Shure Brothers: CRCB - Mar '27 -P214.

Samson - Cotton

" " " " " " "

Cotton Super-Heterodyne

November 22, 1924

K / B

8 - 201A

7 x 28

Samson

Cylindrical On Larger Square Base

Air

Richard W. "Dick" Cotton

" " " " "

R - February 1925 - P62

R - February 1925 - P10 - Construction

R - February 1925 - P11- Layout & Scheme

First splash of this set in The Radio (See "TR" in Legend K below) on November 22, 1924. Same schematic as in Radio, Feb. '25 which used Samson "HW-R1 - 60 KC" IFs. Published in the LA Evening Express about the same time as TR. R, Feb 25: Full construction article with layout. Also, see CRCB for Spring 1925 (Vol 6 #1) on P78 for another construction article. See Samson ad in CRCB - Fall 1925 - P79. RR, July 25, P23: "This article basically assembly & wiring rather than construction." "IFs are primarily air core with a very small amount of iron in them. Just enough iron to broaden the peak a little." One of the few Superhets where the operator could adjust the oscillator frequency through the front panel with the knob centered between the tuning condensers. With a 201A as the Oscillator tube, a grid leak of 30,000 ohms should work. Its not critical. Even a 50 Kohm resistor will work satisfactorily, according to text in RN (date unknown).RN has construction info, layout, and scheme. Used a three tap loop for regeneration in the first stage. Richard W. "Dick" Cotton was an Engineer for Samson. Also see Note 21.

Samson - Ghirard

n / a

Ghirard VIII Super-Heterodyne

April 1926

" " "

" " " "

" "

Alfred A. Ghirard

Staten Island, N. Y.

RN - April 1926 - P1430 - Construction

RN - April 1926 - P1431

Used Samson 60 KC IFs. [5000 meter helical-wound IFs designed by Professor Bowles.] Used a homebuilt Oscillator-Coupler described in Sept '26, Radio News [P254]. Circuit similar to R. W. "Dick" Cotton's receiver. Tubes were UV201As.

Samson Impedance Coupled

n/a

N Y Sun Impedance Coupled Super

January 28, 1928

2 - 200A & 5 - 199

7 x 18

1 - MA

Samson No. 125 Chokes & Filter

Cylindrical with Square End Caps

Tunable from 25 to 100 KC

Samson No. 125 Chokes

Samson Filter

Norman E. Taylor

New York City

N.Y. Sun Newspaper - January 28, 1928 - Light Construction

N.Y. Sun Newspaper - January 28, 1928 - Light Scheme

Small set. It's a modified impedance-coupled or also called "choke-coil" super. Decent non-technical explanation of how Impedance-coupled amps work. Silver Marshall 110-A ring and coil used as part of the oscillator circuit. Designer liked the 200A tubes with 3 volt grid bias (not condenser-grid leak) for both detector stages, but 199s could be used there. Samson filter is laid out such that small fixed condensers can be slid on and off its wires to tune various output frequencies from 25 KC to 100 KC. Shielding for the oscillator stage only is 30 guage aluminum. Used Remler variable condensers because of no hand-capacitance. Designer used six 30 ohm rheostats for better filament control, but scheme uses one. See "Impedance Coupled - CRCB" above.

Sangamo

Sangamo Electric Company

Pressley Super Heterodyne Kit

November 1924

Sangamo

Two Shapes - Square & Enclosed Open Frame

Air / Iron ??

Captain Jackson H. Pressley

Springfield, Ill

R - December 1924 - Kit

RWI - March 20, 1926 - P6 - Scheme

Developed by Jackson H. Pressley, Chief Engineer, Signal Corps Radio Lab, Camp Vail, NJ, who was then 26 years old and one of the highest-salaried government radio engineers (RWI, Nov 8, ;24, P30)! See Note 21. New frontend circuit utilizes a capacity bridge that eliminates radiation from the aerial. The first tube is oscillator and detector; thus, eliminating complications of the second harmonic. First five tubes are WD12s abd the last two are 201As. Discussion of the revised wiring of the set in PR issue for Feb '25 on page 195. Troubleshooting in PR, March 1925 (X). Addendum in PR, May 1925 (X). Good light construction article in RR, May '25, P22. Scheme on P23. Condensers might be marked "X Laboratory". Complete kit in Randolph, Fall '25, P22, $64.75. Barawik, Fall '25 (P32) shows layout.Pix of factory in ad, Dec 1924 (X). Kit is 4 IFs and coupler coil (all matched and tuned) for $22.50. 7x18 inch panel.

" " "

" " " " " " " " "

Pressley Super-Heterodyne

December 1924

" " " "

" " " " "

" " "

Captain Jackson H. Pressley

" " " "

PR - December 1924 - P580 - Construction

PR - December 1924 - P580 & 581

"4500 meters" for IFs. Used Sangamo Type AT-60 might imply 60 KC peak (actually 66.6) ??? Used WD12 in the first 5 sockets (in series) and UV201As in the last two in parallel. RWI - 3 parts: April 18, 25, & May 2, 1925 - P4, P??, & P??. RWI, schematic April 18, '25, P4. RWI, schematic November 7, '25, P13. RR, May 25, P22: "Data on the new Pressley Super-Heterodyne" gives info as to how to wire, including special loop antenna construction. Stopped making Super-Het parts by July 1925. Due to patent litigation, "…last 100 genuine Sangamo Kits on the market." PR, July 1925, P53, Complete. Barawik ad. Also see pix of Billy Richardson with is Pressley Aeroplane Receiver. 7x18 inch panel.

" " "

" " " " " " " " "

Portable Pressley-Sangamo Airplane Type Receiver

April 1925

" " " "

" " " " "

" " "

Captain Jackson H. Pressley

" " " "

PR - July 1925 - P53 - Complete

RWI, Ap 18, '25 ad: Operates on built-in loop…" Weighs 22 lbs. With tubes and batteries $134.40 and without same $103. Built into a suitcase with cone speaker. Stopped making Super-Het parts by July 1925. Due to patent litigation, "…last 100 genuine Sangamo Kits on the market." Barawik ad. RWI, Sept 5, '25, P15: Scheme and coil construction. The Superadio Co. of NYC still selling Pressley Supers (RWI, Dec 5, '25, P22).

Sangamo - Edwards

n / a

Captain Edwards' Superheterodyne

November 1924

K / B

Sangamo

Two Shapes - Square & Enclosed Open Frame

Air / Iron ??

Captain Paul S. Edwards

Camp Vail, New Jersey

PR - January 1925 - P88 - Complete

PR - December 1924 - P?? - Construction

PR - December 1924 - P?? - Scheme

This is most likely Pressley's Super. Sangamo IF-60's (60 KC??) and parts. Used Benjamin 7-socket shelf. Non-radiating.Complete parts list in Morison Elect Supply ad in PR, March '25, P106. 7x18 inch panel.

Sangamo - Pressely

Rossiter, Tyler, & McDonald ??

Modified Pressley Super-Heterodyne With AC Tubes

February 1928

" " " "

Captain Paul S. Edwards

New York Ciy

R - February 1928 - P35

Used two UX210s as Push-Pull audio. Apparently, Rossiter, Tyler, & McDonald picked it up as a "knockdown" by Aug '25 according to RTD, Aug '25. Earlier Rossiter & Co, Inc. were wholesale distributors for Sangamo in NYC.

Sargent

"Flivver" Super-Heterodyne

April 1924

Hand-wounds

Thick Tuna Can

171

Air

E. M. Sargent

Oakland, CA

R - April 1924 - P13 - Construction

R - April 1924 - P14

IFs are hand-wound over four 3 1/4" bakelite tubes set at a. 45 degree angle, 8 inches between centers. Used modified honeycomb coil mount on front panel. Also, see Remler. Sargent-Rayment produced an AM/FM/TV sound receiver Ca 1950.

Scott

Scott Radio Laboratories

World's Record Super 9

December 1924

n / a

E. H. Scott

Chicago

Dec '24, P54 - Blue Prints only.

Early ad (Maybe the first): Dec '24, P54 - Blue Prints only. Probably the last under "Scott Radio Laboratories". Address was 35 South Dearborn Street.

" "

" " " " " " " " "

World's Record Super 9

Fall 1925

BOOK

9 - 199

(7 x 28)

(1 - SV)

Remler

Cylindrical

Iron

Air

E. H. Scott

Chicago

RA / RN - Fall 1925 - 20 Page Book with Construction Info, parts list, & scheme

Information from the book, "E. H. Scott...The Dean of DX, Second Edition 2002" by Marvin Hobbs. After Scott returned to America, he had many requests for construction info. Put together a 20 page book with parts list and blueprints. Charged $5.00. Advertised it in Ra and RN in the Fall of 1925. This is Scott's first super and the duplicate he built while in New Zealand. Originally, he built a straight Remler Best. Modified it to use two 600s and two 610s each with a Remler variable capacitor across them. Provided better selectivity. This is what appears to have made the Scott such a fine Super. Information from the book, "E. H. Scott...The Dean of DX, Second Edition 2002" by Marvin Hobbs. Remler "Type 600" peaks at 6700 meters - 45 KC according to QST, Dec '24, P9, Transformer "Type 600" statistics only. The basic Remler kit is...three "Type 600 IF", "Type 610 Tuned Stage Transformer", & "Type 620 Coupler Unit" [a variometer]. The 600 was iron core and 610 with outboard fixed condenser attached was air. Used a small vernier on the front panel for the oscillator circuit not counted in "Additional Knobs".

Scott

Scott Transformer Co.

World's Record Super 9

November 1925 ^^^^^

9 - 201A

Scott

Cylindrical

Iron

Air

E. H. Scott

Chicago

RN - March 1926 - P1358 - Complete

Firt advertied in Radio Age in November 1925. Radio, Feb '26, P58: Ad for complete parts. Douglas book shows Barawik catalog for April (actually1926 with "Improved" W. R. Super 9 at $98.80 ^^.

" "

" " " " " " " "

World's Record Super 9 Portable ^^

November 1925 ^^

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

$103.26 in Nov '25 and $89 in Jan '26 ^^. McMurdo-Silver Company [Silver Marshall] absorbed by E. H. Scott Company in 1938.

" "

" " " " " " " "

Improved World's Record Super 9

October 1926

8 - 201A & 1 - 112

7 x 26

3 or 4

1 -V & 1 - MA

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

Barawik Co. Catalogue - October 1926 - P27 - Complete

Used the R400 Series IF & Filter. Both IF & Filter units are shown as R400s. Later the Filter was listed as the R410. IF had specially shaped core and high grade silicon steel laminations. IFs designed for either 199s or 201As. Three IF and two Filter units were on the bakelite baseboard while the tubes & sockets were on 22 fiber posts above the IFs. Used two "Interchangeable Couplers". One as a Oscillator Coupler and the second as an Antenna Coupler. These don't appear to be the typical "Thor" Coupler. These had special bases that allowed the changing of wavelength thru changing either of two couplers, 25 to 150 meters or 220 to 550 meters. These had split stators with balanced windings.Last tube ibn the audio was likely a 112 as a 112 Amperite was described in the parts list. Barawick, Oct '26 had list at $123.50. Their price $98.80. Shipping weight was 15 pounds. Drilled & engraved 7x26 inch panel.

" "

" " " " " " " "

World's Record Super 10

October 1926

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

CEP - October 1926 - P15 - Article

CEP - October 1926 - P15

" "

" " " " " " " "

World's Record Super 8

November 1926

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

RA - November 1926 - P38 - Construction

RA - Nov 1926 - P408 - Scheme / Parts

RA - Jan '27 - P18 has another construction article nearly identical to the November 1926 article but with more detail. $86.00 kit ^^. 7x26 inch panel.

" "

" " " " " " " "

World's Record Super 8

December 1926

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

RN - December 1926 - P677 - "Products" - Parts

CRCB - December 1926 - P82 - Construction

CRCB - December 1926 - P85

7x21 inch panel.

" "

" " " " " " " "

Ideal Model of the World's Record Super 8

March 1927

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

CRCB -March 1927 - P195 - Parts

RA - March 1927 - P17 - Construction

RA - May 1927 - P21

Panel arrangement is different from the January 1927 model. Are there more differences?? 7x26 inch panel.

" "

" " " " " " " "

World's Record Super 9

March 1927

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

CRCB -March 1927 - P123 - Construction

CRCB - March 1927 - P125

7x26 inch panel.

" "

" " " " " " " "

Radio Age's World's Record Super 9

May 1927

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

RA - May / June 1927 - P25 - Construction

RA - May / June 1927 - P31

7x26 inch panel.

" "

" " " " " " " "

World's Record Super 8

September 1927

Scott

Cylindrical

Iron

Air

E. H. Scott

" " "

H-C Catalogue - Late Summer 1927 - P57 - Complete

Note 1

H-C cat, Late Summer '27 $49.50. 7x24 inch panel.

" "

" " " " " " " "

New World's Record Super 10

September 1927

9 -201A & 1 - 210

7 x 26

2 - Drum

1 - V

Scott

Tall Retangular

(45)

(Iron)

Air

E. H. Scott

" " "

H-C Catalogue - Late Summer 1927 - P57 - Complete

CRCB - September 1927 - P91 - Construction

RLG - September 1927 - P91 - Scheme, Layout, Parts

Used NEW tall, rectangular Scott Selectone Matched units ("B500" series), the NEW Remler triple-ganged condenser, and the NEW Remler drum dial. Two RF stages ahead of the first detector. Used long-wire antenna of 20 to 30 feet only. CRCB Sept '27 is two page ad. Listed as "NEW". Another construction article in RLG - Sept '27. CRCB Jan '28 construction includes Phono Pick-Up & Power Amp. Article in RWI, March 25, '28. WCFL, Oct '27, P22 & 23, Complete / Parts. H-C cat, Late Summer '27 $82.80. Same info & price in Haskell catalogue for Fall 1927. S. Hammer Radio Co offered a completely wired set in a Corbett cabinet for $184.80 in Sept '27. American Radio Co, Catalog #117, Pg40, Sept 1927 (X). 7x26 inch Formica panel.

" "

" " " " " " " "

World's Record Economy Super Eight

November 1927

Scott

E. H. Scott

" " "

CRCB - November 1927 - P171 - Kit

CRCB - November 1927 - P154 - Construction

CRCB - November 1927 - P154

Ad shows 2 styles of IF cans: sub-base mounting & baseboard mounting.

" "

" " " " " " " "

Light-Socket Operated World's Record Super 10

December 1927

Scott

E. H. Scott

" " "

RLG -December 1927 - P117 - Construction

RLG -December 1927 - P118

" "

" " " " " " " "

World's Record Super 10 with Electric Phono Pickup

January 1928

Scott

E. H. Scott

" " "

CRCB -January 1928 - P60 - Article

CRCB -January 1928 - P61

RLG - March '28 has AC hookup and the Electric Phono Pickup.

" "

" " " " " " " "

World's Record Shield Grid 9 - All Electric ^^

February 1928

Scott

E. H. Scott

" " "

(RN - February 1929 - P76 - Complete) ^^

" "

" " " " " " " "

World's Record Shield-Grid Super 9

May 1928

Scott

E. H. Scott

" " "

RN - May 1928 - P1296 - Complete

CRCB - September 1928 - P48 - Lite Construction

CRCB - September 1928 - P50 - Layout & Scheme

Four page construction article with schematic of Scott designed Power Amp and Power Supply in CRCB, September 1928. No untuned, 1 tuned, 3 IFs, 2 Audio ^. Used UX222 Screen Grid tubes. 7x26 inch Panel.

" "

" " " " " " " "

World's Record Shield-Grid Super "A" [AC]

September 1928 ^^

8 [+ 3]

Scott

E. H. Scott

" " "

CRCB - November 1928 - P145 - Complete

(CRCB - September 1928 - P48 - Construction) ^^

Allied, late '28: Apparently the same set as immediately below, but with a three tube "Scott Amplifier and Power Pack". Appears in the November 1928, CRCB, ad that there's an extra tube on the main chassis and a nickeled box not found on the "B" below. $48.80". ????? Shown in the Westrad Cat., P45, Fall 1928 says "Where A.C. current is available, the ninth tube, the new No. 250 with the specially designed Scott power Pack and Amplifier, will give tremondous volume and tone quality." List $138.10, Westrad: $81.20.

" "

" " " " " " " "

World's Record Shield-Grid Super "B" [DC]

September 1928

Scott

E. H. Scott

" " "

RSWC - October 1927 - P26 - Complete

CRCB - November 1928 - P66 - Construction

CRCB - November 1928 - P67

Battery version. Shown in the Westrad Cat., P45, Fall 1928 says "If A.C. current is not available, you can operate this receiver economically with dry batteries. The eight tubes used in the receiver itself use only 29 mils of B and less than 2 amps. of "A" current. Allied, late '28: $81.14. RSWC, Oct '28: Power Pack and second stage audio. Parts $48.80.

" "

" " " " " " " "

World's Record AC 9 ^^

May 1929 ^^

11 ^

Scott

E. H. Scott

" " "

" "

" " " " " " " "

World's Record A. C. Shield-Grid 10

July 1929 ^^

Scott

480

Impedance

E. H. Scott

" " "

CRCB - September 1929 - P7 - Complete

CRCB - September 1929 - P7 - Article

CRCB - September 1929 - P56

Article tells how to tune IF trimmers. Four stages of IF. Audio output is push-pull using 245s. Power supply uses two 280s for 90 volt B+. Schematics include power supply & connections. Sold cabinets also for the chassis. Called "A. C. Shield-Grid 10" in Sept '29 CRCB & "A-C Screen Grid 10" in Nov '29 CRCB. (Radio - September 1929 - P?? -Complete). "According to Jim Clark's book on Scott, the third version (with four 224 tubes) was not introduced until March 1930. The fourth 224 replaced a 227 in the mixer (first detector) stage. The first version of the AC-10 was introduced in July 1929; the second version in November 1929. Superficially, the only difference between versions one and two may have been that version 1 had a large dial escutcheon while version 2 had a small dial escutcheon, which carried over into version 3." (From Tolbert Prowell - email 2-19-04) Panel 7x18 inch walnut. This is the last Scott in the decade: The New 1931 Scoot All Wave Superheterodyne was offered Nov. 1930 per CRCB (Vol. 11, No. 4) for Nov. 1930.

Scott - MS-8 Portable

n/a

MS-8 Portable

September 1927

8 - 201A

Drilled & Engraved (6 x 17)

1 - V

Scott

Cylindrical

Iron

Air

E. H. Scott

(Unknown)

" " "

Barawik Catalogue - Fall 1927 - Complete Kit

Used 2 Scott Selectone R400 and 2 - R410 transformers and a Thor oscillator coupler type 460. Likely two Thordarson audios. Kit was $52.05. Portable cabinet cost $ 15. "Junior" loop antena was $3.50. Cabinet was a 12x 17.5 x 18 inch portable that weighed 35 lbs. with batteries. Kit include schematic.

Shepard - Potter

Shepard - Potter Corporation

Radio Scout "All Wave Tuner"

January 1924

1 - 201A

(7 x 12)

n / a

New York City

RD - January 19, 1924 - Kit

This is an early receiving set that can be used as a front-end tuner fior a superhet circuit. Comploetely wired and ready to operate. $21 without accessories. Address: 1552 Franklin st.

37 571

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Silver-Marshall with Haynes Griffin

n / a

Experimental Six Tube Super

March 1924

6 - 199

(16 x 12)

NIF

Silver Marshall

Hand-wound Squares

n / a

Air

McMurdo Silver

New York

RB - March 1924 - P414

Info taken about Haynes from RB, March 1924. Used six UV-199s. Hand-wound IFs and filter. (Air / Air). Built while with Haynes in New York. Experimental. "Not recommended for general construction." 16x12 inch panel.

Silver-Marshall

Silver-Marshall, Inc.

Oscillator Coupler

September 1924

n / a

McMurdo Silver

Chicago

RB - September 1924 - Near Last Page - Parts

Biography of McMurdo Silver in RH, June 1020 - Page 1076. RB - Sept 1924 - "New Equipment" - Shows Osc Coil. RWI, Ap 20, '29, P9: Moving into new 100,000 sq foot factory on Chicago's west side in summer 1929, 4 times bigger than old Jackson Blvd factory. Enough additional room to make more conventional set to be supplied to merchandisers of private brands. McMurdo-Silver Company [Silver Marshall] absorbed by E. H. Scott Company in 1938.

" " " " "

" " " " " "

Eight Tube Portable Super-Heterodyne

8 - 199

Silver Marshall

" " " " " "

McMurdo Silver

" " "

Note 22 - 1924 - P??

Shown in the RB, Oct '24, P458 using 8-tube ganged socket, iron-core IFs in a rectangular block under the subpanel, and all UV199s. The 401 IF Block has 2 IF transformers and a filter transformer inside. Good ad in RA, Oct '24, page 63. (Oct '24 RB article shows this radio.) May be the same as the Portable below??? 7x18 inch panel.

" " " " "

" " " " " "

Eight Tube Portable Super-Heterodyne

October 1924

Silver Marshall

" " " " " "

McMurdo Silver

" " "

Note 22 - 1924 - P??

" " " " "

" " " " " "

Portable Super-Heterodyne

October 1924

Silver Marshall

" " " " " "

McMurdo Silver

" " "

CRCB - Fall 1924 - P76 - Complete / Parts

CRCB - Fall 1924 - P77 - Construction

CRCB - Fall 1924 - P77

Used 5-tube ganged socket and 2 separate sockets, all UV199s. Used the Transformer Unit Model 401 (Iron / Air) under the panel. Good ad in RA, Oct '24, page 63. (Oct '24 RB article shows this radio.) "The Portable Super-Heterodyne" book in R - Nov 1924 - P88. Several months later called the "Silver Super" Portable. Described in RWI, June 13, 1925 by Wainwright Astor (Pg ??). RWI pictures in Aug 29, 1925. 7x18 inch panel.

" " " " "

" " " " " "

Silver Super-Heterodyne

November 1924

Silver Marshall

" " " " " "

McMurdo Silver

" " "

RA - November 1924 - P65 - Complete

Same as the Laboratory model below, but Used only the 50 KC Transformer Unit No. 401. The Balance Condenser is a .000045 mf. Dec '24, RA, P58 advertises "Parts / Kit". 7x24 inch panel.

" " " " "

" " " " " "

Silver Super Laboratory

December 1924

Silver Marshall

" " " " " "

McMurdo Silver

" " "

PR - December 1924 - Parts

RA - March 1925 - P13 - Complete

RA - March 1925 - P14

Used a 50 KC IF (module) 401 unit or 2 - 60 KC "charted transformers and 1 - 60 KC charted filter". Ad also R, Dec 1924. 7x24 inch panel.

" " " " "

" " " " " "

Silver Super Laboratory (201A / WD11 / WD12 Model)

January 1925

Silver Marshall

" " " " " "

McMurdo Silver

" " "

CRCB - Spring 1925 (Vol 6 #1) - P62 - Kit / Parts

RB - January 1925 - P498 - Construction

RB - January 1925 - P500

Used a 50 ?? or 60 ?? KC IF (module) unit Model 401, 2-SM Low Loss (filter) Condensers, and 1 - SM Osc. Coil Model 101. Can also use WD-11s & WD12s. RA, Jan 25, P71, Ad. 7x24 inch panel.

" " " " "

" " " " " "

Two-Ten & Two-Eleven Charted and Matched IF Transformers

February 1925

n / a

Silver Marshall

Aluminum Square

Steel

Air

McMurdo Silver

" " "

R - February 1925 - P57 - IFs Only

IFs are aluminum blocks also shown RB June '25. Kit (shown in PR June '25) includes 2 "Two-Ten"s (IFs) which peak at 5000 meters (same IFs used in the 401 Unit), 1 "Two-Eleven" (Filter), and 1 "101B"(Coupling Unit) with instructions. RA - February 1925 - P62 - IFs Only. These IFs did not work well and were replaced by about January 1926. (See January 1926 "Improved All-Wave" for details on bakelite IFs.) See Fenway for usage.

" " " " "

" " " " " "

Silver Super Laboratory Model Super-Heterodyne

March 1925

Silver Marshall

Aluminum Square

Steel

Air

McMurdo Silver

" " "

RB - June 1925 - P?? - Complete

RA - March - P13 -Construction

RA - March - P14

Used the "RF Transformer Unit or two metal 60 KC Charted Transformers and one 60 KC Charted Filter. Used 201As. Laboratory Model. Panel is 7x24.

" " " " "

" " " " " "

Silver Super Laboratory - Model B

Spring 1925

Silver Marshall

Aluminum Square

Steel

Air

McMurdo Silver

" " "

See Dale Davenports set. IF box has engraved plate that says "Model B". Box is slightly different than the December 1924 ad in model above. Used a 60 KC IF (Unit) 401 unit or 2 - 60 KC "charted transformers and 1 - 60 KC charted filter". 7x24 inch panel.

" " " " "

" " " " " "

Radio World Aluminum IF Super

June 6, 1925

Aluminum Square

Steel

Air

McMurdo Silver

Is this the Autodyne?? See RB for June 1925…Same seven tuber as this???

" " " " "

" " " " " "

Super Autodyne

July 1925

6 - 201A or 6 - 199

7 x 18

Silver Marshall

Aluminum Square or Misc

Used only two - Steel

Air

McMurdo Silver

" " "

CRCB - Fall 1925 - P93 - Parts

RB - July 1925 - P377 - Construction

CRCB - Fall 1925 - P92

Barawik (Fall '25) says: "This circuit is a adaption of the famous Pressley [Bridge Oscillator] circuit - much simplified, more effective, and with one less tube." "Will not radiate, not even over slight distances of a few yards." IFs work at 60 KC. MIght be found with the aluminum square IFs or the newer miscellaneous shaped IFs. Radio appeared at the transition of the IFs. PR - July 1925 - P32 - Ad. RN, "Superheterodyne" book [Note 21] published details on how to build your own IFs, Filter, and Oscillator coil. It also has a scheme and parts list, showing S-M 60 KC IFs and Filter. Apparent construction article appeared in NY Herald / NY Tribune on Aug 30, 1925. Construction in CRCB - Fall 1925 - P89. "SM Super Parts" CRCB - Fall 1925 - P93. Also see Note 21. "New 1926" Barawik still shows it, $58.50.

" " " " "

" " " " " "

Silver Super-Heterodyne

December 1925

Silver Marshall

Aluminum Square

Steel

Air

McMurdo Silver

" " "

PR - December 1925 - P570 - "New Products"

" " " " "

" " " " " "

Improved Silver All Wave Super

January 1926

6 -199 & 1 - 120 or 6 - 201A & 1 - 112

7 x 24

1 or 2

Silver Marshall

Misc

Steel

Air

Ernest R. Pfaff

" " "

Barawik Co. Catalogue - September 1926 - Complete

CRCB - Summer 1926 (Vol 7 - No 3??) - P115 - Features & Parts List

CRCB - Summer 1926 (Vol 7 - No 3??) - P92 - Layout

Also, RN Jan '26 article. It has a scheme. There is a shielded version and an unshielded version. See RN Jan 1926. Used SM "210 & "211" transformers (peak at 60 K.C. Specifically, 201A tubes: 50 to 60 KC, 199 tubes: 60 to 70 KC) and "110A" & "111A" Special coils. Another way to identify this set is to look for the use of grid bias on both detectors is rather than the grid resistor and condenser. That is, note the absence of a grid resistor on the grid of both detector tubes. Silver recommends 199s to the last stage which is a 120. If 201As are used then the last stage is a 112. 201As will give better results. Indicates that oscillator circuit is broad enough that the two main tuning dials could be geared together for single control tuning. So, this set might have a single tuning dial. If it has a single dial, it should use only a long wire antenna unless modifications are made to the front end of the set (see RN, "Superheterodyne" book test). "New 1926" Barawik: "Two stages of RF amplification with special biased detector and 3 stages of resistance coupled audio amplifier." "This radio won the First and Second Place Prizes at the Chicago Radio Show" says Barawick Catalogue, September 1926.

" " " " "

" " " " " "

New Model Home or Portable Super

April 1926

Silver Marshall

McMurdo Silver

" " "

Barawik Co. Catalogue - October 1926 - P45 - Complete

CRCB - Summer 1926?? - P115 - Features & Parts List

CRCB - Summer 1926?? - P92 - Layout

Different than the "Improved All Wave" above. Used SM "210 & "211" transformers (peak at 60 K.C.) and "111A" Special coil. Two Thordarson audios. 7x18 inch panel. Without portable case, $62.50

" " " " "

" " " " " "

112 K. C. Long Wave Jeweler's Time Signal Amplifier [440]

September 1927

n / a

Silver Marshall

Jewerler's Time Signal Amplifier 440 Module

112

Air

Ernest R. Pfaff (likely)

" " "

Barawik Co. Catalogue - Spring & Summer 1928 - P106 - Module

This four-tube module, tuned to 112 K.C. [2677 meters], is a 3-stage IF unit (and 1-stage detector) just like the Remler "InfraDyne" (700) unit. Barawik Sp & Summer '29: Requires 4-UX201A. H-C cat., Late Summer '27, $20.58 Copper & brass catacomb. Suggested retair $35.

" " " " "

" " " " " "

112 K. C. Long Wave Jeweler's Time Signal Amplifier [440-SG]

August 1927

n / a

Silver Marshall

Jewerler's Time Signal Amplifier 440 Module

112

Air

Ernest R. Pfaff, developer of 440SG ^^

" " "

RN - August 1927 - P166 - Module

This four-tube module, in burnished copper, tuned to 112 K.C. [2677 meters], is a 3-stage IF unit (and 1-stage detector) just like the Remler "InfraDyne" (700) unit. 15 x 5 x 5.5 inches. RLG, June '28: Requires 3-UX222 and 1-UX201A. H-C cat., Spring '29, $23.52

" " " " "

" " " " " "

Improved Seven Tube Super-Heterodyne

September 1927

Silver Marshall

(60)

(Steel)

McMurdo Silver

" " "

[Note 1]

" " " " "

" " " " " "

Improved Shielded Laboratory Super-Het

September 1927

7 - 201A & 1 - 171 or 112

(7 x 26)

2 - Drum

Silver Marshall

Jewerler's Time Signal Amplifier 440 Module

112

Air

Ernest R. Pfaff, developer of 440SG ^^

" " "

Setbuilders Supply - CRCB - September 1927

RLG - September 1927 - P94 - Construction

RLG - September 1927 - P95

Hammer Cat. Sept '27 [P53] says "It is unconditionally guaranteed to out-perform any other eight tube receiver at any price, and to equal or exceed in performance any ten tube receiver regardless of price." First detector and oscillator are completely shielded. "Adaptable…also for new AC tubes." Used SM 220 audio xfmrs. CRCB and RB (both) for Sept '27 have construction articles, too. RN, Jan '28, P788 article & scheme. RLG, Sept '27, P141, parts. RWI, Nov. 19, 26, & Dec 3, 1927 construction series. H-C cat., Late Summer '27 complete $54.50. Haskell Fall 1927, $54.50. Hammer Cat. Sept 27: Complete Kit = $98.45, Wired with Fritts cabinet = $131.95. By Sp '29, Barawik showed it at $45.79 complete. American Radio Co, Catalog #117, Pg42, Sept 1927, $100 (X). Aluminum shield boxes optional for RF & Oscillator stages. Long-wire antenna about 20 to 30 feet.

" " " " "

" " " " " "

Improved Shielded Laboratory Model [A-C]

September 1927

Silver Marshall

" "

Ernest R. Pfaff, developer of 440SG ^^

" " "

H-C Catalogue - Late Summer 1927 - P53

CRCB - November 1927 - P144 - Construction

CRCB - November 1927 - P144

[Same as directly above except AC filaments are used]

" " " " "

" " " " " "

Improved Laboratory Model [A-C]

September 1927

Silver Marshall

" "

Ernest R. Pfaff, developer of 440SG ^^

" " "

H-C Catalogue - Late Summer 1927 - P51

CRCB - November 1927 - P144 - Construction

RN - January 1928 - P796

Used McCullough or Sovereign AC tubes

" " " " "

" " " " " "

High Amplification Super-Heterodyne

November 1927

Silver Marshall

" " "

(Note 1)

" " " " "

" " " " " "

Improved Sscreen Grid Laboratory Model Super-Heterodyne

February 1928

Silver Marshall

" " "

RLG - June 1928 - P85 - Construction

RLG - June 1928 - P886

First in RWI, Feb. 25 & March 3, '28, 2-Part series by Ernest R. Pfaff, creator of the 440-SG 112 KC Time Amplifier unit. 7x24 inch panel.

" " " " "

" " " " " "

1929 Screen Grid Nine Tube Laboratory Super (Model 712)

September 1928

Silver Marshall

Tall Cylindrical

" " "

American Radio Catalogue - October 1928 - P16 - Complete

CRCB - September 1928 - P60 - Lite Construction

CRCB - September 1928 - P61 & 62 - Layout & Scheme

Barawick referenced it as the Model 712 in Sp & Summer '29 catalogue. Used 6 - 222, 2 - 201A, and 1 - 112 tubes. Used two stages of 65 KC IFs from SM 210 long wave transformers. These transformers were found to work well with the screen-grid tubes according to the article in CRCB. Article said the low IF benefitted over the higher IF (over 100 KC). "...the perfectly obvious desirability the low I.F. to get great amplification and selectivity." Used the Clough System of audio amplification. Most of the electronics is covered by seven retangular, copper boxes. Barawik Cat., Sp & Summer '29 says the 712 Unit (about 90% of the entire radio) is "completely wired and inspected before leaving factory...". at $55.98. The SM 700 two-tone brown metal shielding cabinet is $5.55 extra.

" " " " "

" " " " " "

Screen Grid Super Nine

March 1929

Silver Marshall

" " "

CRCB - November 1927 - P144

" " " " "

" " " " " "

Model 714 A-C ^

1929 ^

9 ^

Silver Marshall

175

" " "

Likely late 1929 into late 1930. $87.50 ^. No untuned, 1 tuned, 2 IFs, 2 Audio Push-Pull.

" " " " "

" " " " " "

Model 716 A-C ^

(Fall) 1929 ^

10 ^

Silver Marshall

" " "

One untuned, 2 tuned, no IFs ??? , 2 Audio Push-Pull ^.

" " " " "

" " " " " "

Model 724 A-C ^

1929 ^

9 ^

Silver Marshall

" " "

No untuned, 1 tuned, 2 IFs, 1 Audio Push-Pull ?? ^. $99.50 ^.

" " " " "

" " " " " "

Model 724 DC ^

1929 ^

8 ^

Silver Marshall

" " "

Dry cell tubes ^. No untuned, 1 tuned, 2 IFs, 1 Audio Push-Pull ?? ^. $82.50 ^.

" " " " "

" " " " " "

Model 726 A-C ^

1929 ^

9 ^

Silver Marshall

175

" " "

No untuned, 1 tuned, 2 IFs, 1 Audio Push-Pull ?? ^.

" " " " "

" " " " " "

("Model 726-SW 25" ???)

1929

Silver Marshall

" " "

(See Dale Davenport ?? This was a super at the head of the class and ahead of the first multi-band Scotts in some ways...additionally this is a 25 hz model of which only a handful are estimated to have been made during the less than a year production life of the sets before the 727 model was introduced. (May be the same as right below ???) )

" " " " "

" " " " " "

Model 726SW A-C ^

(Fall) 1929 ^

11 ^

Silver Marshall

eBay

" " "

Probably a Short-wave Super Het. No untuned, 1 tuned, 2 IFs, 1 Audio Push-Pull ?? ^.

" " " " "

" " " " " "

Model 727SW A-C ^

1929 ^

9 ^

Silver Marshall

" " "

(No info)

" " " " "

" " " " " "

Model 782 A-C Midget ^

1929 ^

8 ^

Silver Marshall

" " "

- , - , 2 IFs, 1 Audio Push-Pull ?? ^.

Silver Marshall - Adams

n / a

Adams 1-2-3

February 11, 1928

7 [+ 2] [+ Power Supply Tubes]

4 - 227, 3 - 226, & 2 - 171

7 x 24

Silver Marshall

Jewerler's Time Signal Amplifier 440 Module

112

Air

Dana Adams

RWI - February 11, 1928- P9 - Construction

RWI - February 11, 1928 - P9 - Scheme

This seems to be the Rolls Royce of the Rolls Royce of Superhet Receivers! As a three-dial Super, it used the Silver Marshal 112 KC IF module, the SM 440 Time Signal Amplifier. The three-dials are the Oscillator Condenser, the Secondary Condenser, and the Antenna Condenser, left to right looking at the front panel. It is a Local/Superhet hybrid. A switch changes the Super into a single-dial, one screen grid-tube local receiver. There is a feedback circuit and a switch that makes the antenna circuit aperiodic or periodic which aides in distance getting. Used four 327 and three 326 tubes. Developer recommends a push-pull power amplifier on the output making the set a 9 tube receiver, if added. Using a pair of 171s is slightly better than one 210, while two 210s with low distortion is better than a single 250. Using two 250s has an extreme output. Oscillator is a modified Hartley. See Dana Adams other superhets under the "Flexible DC" and Flexible AC" immediately below. See Silver Marshall for more info on the Time Signal Amplifier. Twelve inches deep. 7X24 inch front panel.

" " " " " " " "

" "

Flexible D.C. Superheterodyne

May 1928

Silver Marshall

Jewerler's Time Signal Screen Grid Amplifier 440SG Module

112

Air

Dana Adams

New York City

RB - May 1928 - P54 - Small Ad

RB - May 1928 - P39 - Construction

RB - May 1928 - P41 - Scheme

Three-dial Super. Switch transforms Super Het to single circuit receiver. Used SM Time Amplifier. Four 327 tubes and three 326 tubes. DC version. See Dana Adams' other super under "Adams" above. 7x24 inch panel.

" " " " " " " "

" "

Flexible A.C. Superheterodyne

May 1928

" " " " "

Jewerler's Time Signal Screen Grid Amplifier 440SG Module

" "

Dana Adams

" " " " "

RB - May 1928 - P54 - Small Ad

RB - May 1928 - P39 - Construction

RB - May 1928 - P40 - Scheme

Three-dial Super. Switch transforms Super Het to single circuit receiver. Used SM Time Amplifier. Four 327 tubes and three 326 tubes. AC version. See Dana Adams' other super under "Adams" above. 7x24 inch panel.

Silver-Marshall - Best

n / a

Best Modified Superheterodyne Shielded Model

(Fall 1925)

7 - 199

10 x 21

1 - V

Remler

Cylindrical

Iron

Air

Gerald M. Best

" " " " " " " "

RN - Note 21

Silver Marshall - Brennan

n / a

Improved Lab. S.-G. Superheterodyne

June 10, 1928

Silver Marshall

Jewerler's Time Signal Amplifier 440 Module

112

Air

John B. Brennan, Jr.

New York City

NYHT - June 10, 1928 - P5 - Lite Construction

NYHT - June 10, 1928 - P5 - Scheme & Base Layout

Built in a "Deck" (tower) design. Used the Silver Marshall Jeweler's Time Signal Screen Grid Amplifier Module and all Screen-Grid tubes. Audio stages are resistance-coupled. "First tube circuit consists of regenerative …feedback." "A novel feature…is the use of two meters, one a seven-volt voltmeter and the other a twenty-five mil, mill-ameter...".

Silver-Marshall - Brush

n / a

Kodak Size Midget 45 K.C. Best Super

Spring 1925

7 - 199

5 3/4 x 11

1 - V

TL or W

Silver Marshall

(Aluminum Square)

Iron

Air

Gerald M. Best

W. P. Brush, Designer

San Francisco

RR - October 1925 - P11 - Lite Construction

RR - October 1925 - P13

"Radio" magazine for 1925 (Month unknown, "First part of this year") has full construction article by Clinton Osborne. RR, May '25, list numerous brands of IFs for use in this radio. They must all be near 45 K.C.: Remler, All-American, Baldwin Pacific, Branston, Jefferson, Phenix, Receptrad, Silver-Marshall. RR, Oct '25: Construction of untuned & tuned 45 KC IFs shown. Same construction info, woodcut pictures, and scheme in RN, "Superheterodyne" book. Operated on tuned loop, but there is a schematic of an adapter for use with a long wire antenna in RN, "Superheterodyne" book. See Note 21. Super small: 7 1/2 pounds sans batteries.

Silver Marshall - Callies

n / a

Callies Super-Heterodyne

September 1926

Silver-Marshall

Misc

Steel

Air

Charles H. Callies

(Silver-Marshall ad in RB March 1927, page 537)

RLG - September 1926 - P130 - Construction

RLG - September 1926 - P131 - Scheme

Used Silver-Marshall parts. Featured tone quality over other Supers, including other Silver Marshall Supers. Silver-Marshall ad in CRCB March 1927, page 197 lists radio as using SM parts. 7x24 panel.

Silver Marshall - Clough

n / a

Six-Tube Super-Heterodyne

September 1926

Silver Marshall

Misc

Steel

Air

Kendall Clough

RB - January 1927 - P260 - Construction

RB - January 1927 - P261

Used Silver-Marshall parts. Tuning condensers & circuitry are shielded. Interesting set. Two stages of IF used rather than three. Used 201As. Designed for short indoor antenna. Also, RA Jan 1927. I have a reprint of the original articles in RB, Sept 1926 and RB, Jan 1927. 7x18 inch panel.

Silver Marshall - Fenway Everyman's

n / a

Fenway Everyman's Receiver

February 1926

9 [4 ******]

9 - 201a

8 X 28

1 -V & 1 - MA

Silver-Marshall

Misc

Steel

Air

Leo Fenway

New York City

RWI - March 6,1926 - P2 - Complete Parts

RN - June & July 1926 - P?? & P44 - Construction

RN - June 1926 - P1656

Silver Marshall - Fenway Standard

n / a

Fenway Standard Nine

9 - 201a

(8 X 28)

(4)

1 - MA

(Silver-Marshall)

(Misc)

(60)

(Steel)

(Air)

Leo Fenway

New York City

Three-dial set! NOT SWITCHABLE FROM SUPER TO TRF. No TRF stages. Fenway, 29 West 64th Street, NY. Moved in Dec '28 to 831 Eighth Ave (across from Madison Sq Garden)...then known as DX, Inc.

Silver-Marshall - General Radio

n / a

Experimental S-M Eight Tube Super

1924

8 - 199

7 x 16

General Radio / Unknown Filter

Misc IF / Tuna Can Filter

Iron

Air

McMurdo Silver

" " "

Note 22 - 1924 - P??

Info taken from McMurdo Silver booklet, "The Portable Super-Heterodyne" (See Note 22). Used eight UV-199s. Apparently used General Radio IFs and a special filter unit. Also see Haynes-Griffin history. 16 inch panel.

Silver Marshall - Green

n / a

Troubleshooting the Super-Het

December 1924

8 - 199 or 201A

7 x 28

Silver Marshall or Receptrad

Square or Cylindrical

Iron or Steel Core

Possible Honeycomb Coils or Air

Paul Green

" " "

RA - October 1924 - P9 - Construction

RA - October 1924 - P9

Silver-Marshall - Popular Science Monthly

Town and Country Super-Heterodyne

September 1924

7 x 20

Silver-Marshall

Misc

Steel

Air

S. Gordon Taylor

PSM - September 1924 - P66?? - Construction

PSM - September 1924 - P66??

"How to Build a Super-Heterodyne - Part One - The First Detector and Two stage amplifier Units" as listed in Sept '24 issue of PSM. Composite front panel.

47 618

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Silverman

23-Control DX receiver

April 1926

Samuel Silverman

New York City

RN - April 1926 - P1400 - Article

"1 oscillator, 2 detectors, 3 stages of regenerative tuned radio frequency, 3 stages of tuned radio frequency amplifiers, 4 stages of audio frequency. Twenty-three controls operate the radio.

Sleeper

n / a

7-Tube Super Heterodyne

(1924)

7 - 199 or 201A

(7 x 24)

NIF

PNF

NIF

M. B. Sleeper

From Sleeper's book: "Radio & Model Engineering Series No. 7 - Super Heterodyne and Inverse Duplex, Radio Frequency, Regenerative Receiving Sets, ". Three-dial Super with one dial on the far right, two on the left, and three small dials in the center. Nothing else known.

" " "

n / a

Eclipse Superheterodyne

March 1927

NIF

PNF

NIF

M. B. Sleeper

Radio Mechanics - March 1927 - ???

Cover pix from eBay. Nothing else known.

Smith-Pagel - Victoreen

Smith-Pagel

Smith-Pagel Super Deluxe

(Late 1926)

8 - 201A

(7 x 24)

L or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Owned by Doug Houston of Detroit. Paid $15 for it! Victoreen circuit with Mazda "Consomello" audios of Cleveland. Same location as Victoreen. Appears to have 5 filament controls.

St. James

St. James Laboratories

Transformer RT

December 1924

K & P

n / a

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

Chicago

CRCB - Fall 1925 - P195 - Parts

QST - December 1924 - P9 - Transformer ""R. T." only

Model "RT" must have been "Radip Transformer". (St. James may have started as early as 1923.) QST, Dec 1924 indicates peak at 1200 meters (250 KC) (X). Vacuum-sealed tube. It was said by Marvin W. Thompson, one-time Technical Editor of Radio Digest Illustrated (1924, 1925, & 1926) that Robert T. St. James matches the transformers himself rather than to leave it to an employee (RDI, Jan. '27, Issue 2, P7). CRCB Spring 1925 (Vol 6 #1) and Fall 1925 ads show a taller glass envelope than show in 1927 ads. Also shown in Feb '25 issue of PR on page 189, "What's New?". Showns Red Top.

" " "

St. James Laboratories Incorporated

St. James Eight-Tube Super

April 1926

8 - 201A or 199

7 x 24

1 - V

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

Barawik Co. Catalogue - October 1926 - P21 - Complete

(CRCB - Maybe April 1926?? - Construction??)

IFs operate at 240 KC according to Barawik September '26. Used the earlier (Fall 1925) style of glass, air-core IF transformer without the red top. Barawik: September '26 and Oct '26, $85.60 St James IFs described (Taken from an ad in CRCB Sept '26): Only one of its kind. Two air coils, wound ina special mannerto reduce inter-turn (internal) apacity to a minimum, are mounted on a glass rod. The coil terminals are silver-soldered to terminal wires running to the transformer terminals. The glass rod carrying the coils is mounted in a high lead-content glass casing. The coils are then completely dehydrated by athe repeated additon and subtraction of dehydrated air. The added effeciency due to the complete absence of moisture must be experienced to be appreciated... The diameter of the largest coil used in the St. James transformers is slightly under 7/8-inch. This unusal small size, together with the effect of the vacuum and the shielding effect of the high lead-content glass, combine to produce a magnetic field so concentrated that the hand may be placed directly around any of the transformers while the set is in operation, without the slightest de-tuning effect... With the intermediates operating at 240 KC (hence the name, 2-40), oscillator repeats are reduced toa minimum, and, with a total lack of inherent harmonics... 7x24 inch panel.

" " "

" " " " " " " " " " " "

St. James Red Top IF Vacuum Transformer

Spring 1926

St. James

Tall Red Top Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

CRCB - Summer 1926?? - P186 - IFs Only

Red paint on top of glass envelope.

" " "

" " " " " " " " " " " "

St. James Super With New Dehydrated IFs

September 1926

St. James

Short Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

CRCB - September 1926 - P68 - Construction

CRCB - September 1926 - P71

Chicago Salvage, Nov '26, says it Used a Jewel Pattern No. 135 0-8 volt meter.$78.50. 7x24 inch panel.

" " "

" " " " " " " " " " " "

Transformer Two-Forty

January 1927

St. James

Short Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

CRCB - March 1927 - P219 - Kit

IF was tuned to 240 KC.

" " "

" " " " " " " " " " " "

Semi-Portable

September 1927

St. James

Short Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

[Note 1]

" " "

" " " " " " " " " " " "

Upright 8

September 1927

St. James

Short Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

CRCB - September 1927 - P184 & 185 - Kit / Parts

CRCB - September 1927 - P145 - Construction

CRCB - September 1927 - P165

Four over four tubes. 15" high, 19" long, 3" deep, 13 lbs. "Small enough to be used as portable."

" " "

" " " " " " " " " " " "

Improved Two-Forty Super-Heterodyne

November 1927

8 - 201A

7 x 24

1 - V

St. James

Short Vacuum Tube

240

Air in Vacuum

n / a

Robert T. St. James

" " "

W. Rowan Catalogue - Season 1928 - P12 - Parts / Complete Kit

CRCB - March 1927 - P143 (Note 3)

Had four short, glass vacuum tube IFs. Rowan Catalogue says "New Improvements…Elimination of the filter stage with filter condenser…". Also, "...completely re-designed…". Used St. James Choke Coil. Used a loop antenna. Drilled 7x24 inch panel.

" " "

" " " " " " " " " " " "

Twin 4, The Famous 'U' Circuit

November 1927

St. James

Short Vacuum Tube

240

Air in Vacuum

Robert T. St. James

" " "

CRCB - November 1927 - P195

CRCB - January 1928 - P118 - Construction

CRCB - January 1928 - P120

7x21 inch panel. CRCB, Nov 1927, ad on page 195 says "Regular 7x18 panel".

Standard

Standard Radio Company

Standard Wave King 8 Tube Super Heterodyne

Spring 1926

7x20

Standard Radio

Horizontal Tuna Can

Kansas City, Mo.

Standard Radio Catalogue - Spring 1926 - P57 - Kit / Complete

The IFs are their own - Standard Radio. "The Wonder 8-Tube Set of the Radio World". $65 for Dry Cell Operation. $69 for Storage Battery operation. Any 8 tube Super built for $25 extra. 7x20 inch panel.

Stanwood

Stanwood Electrical Specialty Co., Inc

Superheterodyne

December 1925

PR - December 1925 - "New Products" - Kit

Listing shows it as a "New Receiver". Page 571

" " "

" " " " " " "

Victoreen A-C Console

October 1929

" " "

RN - October 1929 - P346 - Details for "Console"

"One untuned RF: 27, Oscil: 27, 1st Det: 27, 3 IFs: 27, 2nd Det: 27, 1st Audio: 27, 2nd Audio: 50, 2 Voltage Reg Tubes, 2 - 81 Rect Tubes, 1 - C Rect. Superheterodyne."

Standardyne

Standardyne Superheterodyne

Wooster, Mass.

John Wolkonowicz has this.

Stephen

Apex Electric Mfg. Co.

Stephen Microdyne

(1925)

7 - 201A

7 x 18

Apex

Short Cylindrical

NIF

Air

(E. K. Oxner)

(Chicago)

Collector Dale Davenport reports... His Apex says "Stephen" in gold script on the underside of the cabinet lid. But the chassis is the standard Apex Microdyne seven tube Super. He doesn't believe "Stephen" is just the name of the cabinet maker.Rather, it's a brand sold by Apex. No other info. See "Microdyne" and "Lakeside".

Sterling Mfg. Co.

January 1925

Cleveland

PR - January 1925 - P106 - Parts

Ad mentions RF and IF "trio" with shown audio transformer.

Strobodyne

Radio Electric Laboratories

Strobodyne

September 1927

7 - 201A, 1 - 112A or 171A, & 1 - 210

8 x 24

Radio Electric Laboratory

Small Cylindrical

(120)

Air

Lucien Chretien [translated by R. E. Lacault]

Paris, France / New York

RN - September 1927 - Parts [RELTransformers]

RN - August 1927 - P132 - Construction

RN - August 1927 - P134 - Layout

**** "French translation and American adaptation by R. E. Lacault" according to RN. Developed in early 1926 in Paris. Four part series in RN: July, Aug, Sept, & Oct, 1927. First part is explanation of how the circuit works and is different than other Supers. Three part series in RW: Sept 17 & 24 and Oct 1, 1927. The latter has schematic and parts list on P19. One stage of TRF for 1st stage, making three tuning dials. IFs are Madison [Lacault designed] tuned units. May or may not have the Madison name on them. Used 7 - 201As & 1 - 112A or 171A. Sept 1927, RN showed a scheme for an AC-DC power supply, using a single 210 tube. Three metal boxes shield the tuning units. M & H Sporting Goods of Philadelphia exhibited a working Strobodyne during Sept '27. S. Hammer Radio Co. offered completely wired in Fritts cabinet for $173 in Sept. '27 [P9]. Also see Consrad.

Strobodyne Shield Grid

R. E. Lacault, Inc.

New "222" Shield Grid Strobodyne

September 1928

Radio Electric Laboratory ??

R. E. Lacault

" " " " " "

RN - September 1928 - P267 - Complete

RN - September 1928 - P235 - Construction

RN - September 1928 - P236

Also, see "Phenix" and "Radio Electric Laboratory" for other Lacault achievements. Used 3 - 222s, 2 - 201As, 1 - 112A, and 2 - 171As in Push-Pull. 7x24 inch panel.

Stuart-Frey

3,000 Mile Super-Heterodyne

February 1926

R. A. Stuart-Frey

Paris, France

RN - February 1926 - P1118 - Construction

RN - February 1926 - P1118

Employs Tropodyne method of heterodyning. One RF before the detector-oscillator stage. Home-made iron-core IF transformers. IF frequency not given. Also see Note 21. 40 x 8 inch panel.

(Superdyne)

Seven Tube Superheterodyne

Spring 1925

CRCB - Spring 1925 [Vol 6 #1] - P112

CRCB (Spring 1925 -Vol 6 #1) P122: Said it's a "recent circuit which has appeared successful." Called it the "Superdyne".

Super Hetumat 8

Bosserman Radio Laboratory

Regular Super-Heterodyne

March 1925

San Francisco

RN - March 1925 - P1651 - Manufactured

Used UV199 tubes. Shown as a factory-ready Super. Complete $149.00. See Note 27. Location: 766 Post St. Likely associated with Hesson Super Helumat (below).

Super Hetumat 10

Hesson Radio Laboratory

Ten Tube Super-Heterodyne

San Francisco

Complete $185 with loop only. See Note 27. Location: 762 Post St. Likely associated with Bosserman a couple of doors up (immediately above).

Superadio Product

De Witt La France Company, Inc.

Superadio Superheterodyne

October 1925

Welty

William A. Welty

Chicago

CRCB - Fall 1925 - P193 - Complete / Kit

See Superadio by Welty, below. He was "Representative" for De Witt La France's Chicago office in 1925. RN, Nov '25 ad says includes "…treatise by Louis C. Billotte…". See Sure-Fire below.

" " " " " "

Welty & Company, William A.

Superadio Superheterodyne

October 1925

" "

William A. Welty

" "

RN - November 1925 - P706

"Perfectly matched transformers and filter". Used two Heath Radiant condensers, eight Benjamin sockets, two Keystone audios at $73.50. "Kit $17.50". See De Witt La France of Cambridge, Mass above. Welty was "Representative" for De Witt La France's Chicago office in 1925. RDI, Oct 31, '25 has complete set $73.50 also. Has good parts descriptions.

Super-Sun

Sun Manufacturing Co.

(Super-Sun)

November 1925

Louisville, Kentucky

RN - November 1925 - P686 - Radio Set Directory

RN, Nov '25 says it Used dry cells…no antenna...and the Type of Circuit is "Radio frequency and special (our own)". Has two tuning controls. Separate speaker. $125. Might be a Super Het.

Supertone

Buckwalter Radio Corporation

Supertone - Super Audibility Heterodyne

August 1925

(Buckwalter)

40 ^^^

Iron ^^^

Clarence Buckwalter ^^^

Chicago & Denver?? ^^^

RTD - August 1925 - P126

$150.00 ^. "Supertone" (8 tubes) for 1925 (No $$) & six-tube "Burad Supertone" in Radio Collector's Guide (McMahon 1973) for $90.00 in 1926 ^. ^^^ See Wayne Gilbert's articles on Buckwalter Supertone in Colorado Radio Collector's newsletter "The FLASH" in 1998. Supertone employed a unique type of early printed circuit. The chassis was made from a Bakelite type of material and had traces milled into its lower surface. These traces were filled with a copper paste for conductivity, and components were connected to (and through) the filled traces with small bolts and electrical eyelets.

Sure-Fire

De Witt La France Company, Inc.

Sure-Fire Super-Het Kit

October 1925

Welty

William A. Welty

Cambridge, Mass.

RB - October 1925 - P836 - Kit

RB, Nov '25, P129 says "…contains 1 Antenna Coupler, 1 Oscillator Coupler, 1 Special variable Condenser, 1 Tuned Filter Transformer, 3 matched Intermediate Transformers, and all necessary hardware with diagrams, layouts, Complete Super-heterodyne Treatise by Louis C. Billotte." Kit = $17.50. Designed by Louis C. Billotte. See Superadio above.

Syco

Syco Radio Products Corp. ^

Matched Transformers

November 1924

n / a

" " " "

PR - November 1924 - P110 - Kit / Parts

Nov. '24 ad has no reference to Ultradyne. RDI, Jan. 3, '25 has Ultradyne reference. "Around 3100 meters." See above.

Sypher - Ultradyne

Sypher Mfg. Co.

Ultradyne L-1 Super-Het Kit

October 1924

(8)

201A

7 x 30

Sypher

Iron

Iron ??

Toledo, Ohio

PR - October 1924 - P44 - Kit / Parts PR - November 1924 - P110 - Kit / Parts

This is an Ultradyne Knock-off. Same as the Phenix Ultradyne L-1. The October ad promotes Ultradyne. The Nov 1924 issue of Popular Radio has NO mention of Ultradyne (USE both)! Lacault apparently stopped them from using the name. These are iron core where the original Ultraformers are air core. These are matched using the wave meter method. Set of four Ultraformers $20, one Oscillator Coil $2, one Tuning Coil $2. "Each set of transformers is tested out individually in a set on broadcast wves before it receives our stamp of approval." Sypher was making crystal detectors and radio parts in early 1922. I have these IFs. See Ultradyne L-1.

33 653

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Taylor

Impedance Coupled Superheterodyne

January 1928

n/a

Norman E. Taylor

New York Sun Radio Section January 28, 1928 - P ?? - Construction

New York Sun Radio Section January 28, 1928 - P ??

Used seven tubes: five 199s and two 201As. Shielded oscillator in center front of sub-panel. Schematic vague. Set has "tunable" impedance coupling by changing the restance thru four fheostats on front panel. Total ofsix rheostats on the front panel!. Used four RF chokes. 7x18 inch panel.

Thompson, Marvin W.

NIF

1927 De Luxe: The Finest Super

January 1927

St. James

Marvin W. Thompson

Chicago

RDI - January 15, 1927 - P7 - Construction

RDI - February 1, 1927 - P29

This set Used St James IFs. Appears the IFs are tuned to 240 KC.?? Designed for 201As. 7x24 inch panel.

Thompson, Walt S., Jr.

Halldorson Company, The

Thompson Super Seven

November 1927

6 - 201A & 1 - 171

7 x 21

2 - Drum

Halldorson

Misc

Iron

Air

Walt S. Thompson, Jr. (likely developer)

Chicago

CRCB - November 1927 - P177 - Kit / Parts

CRCB - November 1927 - P112 - Construction

CRCB - November 1927 - P113 - Scheme & Layout

This seven tube set omits the typical 1st stage RF amp. The right hand variable condenser tunes the anttennna directly. The Oscillator used an non-variable Ellis "D" coil. Used only two iron-core IF transformers and one air-core filter. All IFs and audios are Halldorson transformers. Easy to spot. Walt S. Thompson, Jr., possible developer. See "Metaform" above. Used Halldorson IFs. See "Ellis Electrical Labs.". See "Halldorson" above for 1928 model.

Todd Superior Power Transformers

Todd Electric Co., The

[Unknown]

1928

n/a

Todd

[Unknown]

NIF

n/a

New York City

N.Y. Sun Newspaper - February 11, 1928 - Small Ad

Possible made IF transformers. Ad says "Transformers for all popular circuits."

Trans-Atlantic

NIF

Trans-Atlantic Superheterodyne Blueprints

(1924)

8 - 201A

(7 x 26)

TL or W

NIF

PNF

NIF

Air

Scheme In My Possession

Large schematic purchased from eBay Spring 2003 for $16. All IF transformers appear, from the drawing, to be air-core. No other info found.

Trans-O-Dyne - Victoreen

NIF

Trans-O-Dyne Super

(1926)

8 - 201A

(10 x 18)

1 -V

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Pictures from Dale Davenport. Used five (5) front panel rheostats turned by Pacent knobs. Early General Radio geared, variable capacitors. Pix shows at least one All American audio and what appears to be a Thordarson audio. Victoreen IFs don't show the labels. Maybe removed? Poor wiring job. One meter possibly activated by button beneath the meter. All components except rheostats, tube sockets, & terminal are below the subpanel. Also, referenced in the AWA Annual Conference Auction Report, OTB, November 1997, P19. Sold for $210. Etched front panel approximately 10x18 inches.

Tropadyne

Radio Industries Corporation / Radio Specialty Company

Tropadyne Super-Heterodyne

August 1924

6 - 201A

7 x 30

L or W

Radio Industries

Tall Rectangular with Small Knob on Top

Tunable Semi-Iron

Not Used

Clyde J. Fitch

New York City

RN - October 1924 - P521 - Kit / Parts

RN - August 1924 - P 170 - Construction

RN - August 1924 - P 172

Six tube set. First Detector & Oscillator combined in first tube. Very atypical. IFs are tuned by individual variable condensers. Tunes from 2000 to 7000 meters. The homebrew IFs shown in RN, :Superheterodynes" book were built with japanned silicon stell. Likely, the Tropadyne variable IFs had the same type of core. No grid leak on second Detector stage as it was found to cause distortion decreased as the tube was operated on the lower end of the characteristic curve. Only one audio stage. Later sold by sister-company, Radio Specialty Company. Also, see Webb (Note 6) - P15. Sold for $60.50 in Kit form ^. Also see Note 21. See Note 27. Tropaformer only $6.75. Split antenna coil means no radiation [I believe that's Pressley's development].It is regenerative. "Tropaia" in Greek means change; "dyne" meaning force. It was said from articles of the day that this six tube super performed better than a seven tube super. "Knockdown" still listed in RTD, Aug '25. Vincennes Phonograph Company of Vincennes, Indiana, bought Radio Industries Corp just before Chtistmas of 1925 and both became "The Radio Industries Corporation (RRET, Jan '26, P67). Also see RN for November 1924 and the RN "Superheterodynes" book [X] for more details. 7x30 inch panel.

Turner

Superheterodyne

May 1926

10 [5 ******]

Edwin E. Turner

R -May 1926 - P15 - Construction

This is a three-dial set! (Actually 4!) 5100 Meters, home-grown Best IFs. Very Different! No particular IFs used. Converts to 5 tube for local signals.

Turnock

Turnock CT-1

Harry C. Turnock??

"Harry C. Turnock CT-1"- Michael Feldt has pix of this based on Victoreen IFs. He used to own it.

Tyrman

Tyrman Electric Corp.

Tyrman Products

September 1927

Tall Rectangular

346

Air

Ernst Tyrman

Chicago

CRCB - September 1927 - P204 & 205

Transformers [RN - Jan '28]: 8-70 for Tuned RF stages, 8-71 for Oscillator stage [Tunes 160 to 360 meters], 8-80 for IF stages, 3-30 is an audio [all for 201As & power tube]. CRCB Nov '27: "Specified for the Camfield Super-Selective 10" [See above].

Tyrman Ten

" " " " " " "

Tyrman Ten

September 1927

2 Drum

Tyrman

Ernst Tyrman

" " "

H-C Catalogue - Late Summer 1927 - P69

CRCB - September 1927 - P82 - Construction

CRCB - September 1927 - P86

One RF stage ahead of the first detector stage. Used outside antenna. Transformers: two RF 8-70, one RF 8-71, four RF 8-80, one AF 3-30, and one pair Push Pull. Tubes were UX201As. Part one, Construction: RWI, Oct 22, '27, P??. Part two, Followup: RWI, Oct 29, '27, P5. H-C cat, Late Summer '27 $81.95. Also, Alter's Oct 1927 catalog P54 and American Radio Co, Catalog #117, Pg31, Sept 1927 (X). 7x26 inch panel.

Tyrman 70

" " " " " " "

Tyrman 70 Screen Grid Amplimax

November 1927

2 Drum

" " "

Tall Rectangular

340

Impedance

Ernst Tyrman

" " "

H-C Catalogue - Late Summer 1927 - P69

CRCB - January 1928 - P87 - Construction

CRCB - January 1928 - P89

CRCB says first model of 7 tube super-het to use Screen Grid tubes (SP-122). Also known as "Screen Grid 7"; constructed in RN - Jan '28 - P764. The article in NYSRS has much detail as to consruction including baseboard layout. I believe the oscillator ran at 1025 KC. IFs peaked at 346 KC. Therefore, the beat frequency is separated by 680 KC [as claimed in the text] so a station appears only once on the dial..."One Spot". "IF amplification has a factor of 50 compared with 7" in previous typical IF applications. Camfield variable condensers recommended (X). Used Webster AB70 eliminator. RWI articles Feb 4 (X) & 11 (X), '28, Part 3 of 4, Feb 18, 1928 (X). Ad in CRCB, Jan '28, P203. Transformers [different than the 8-80s used with 201As]: three RF 9-90, one Inductance 9-80, two AF 3-30, and one Output. Tubes were UX222 Shield Grid 25 mA "B" current and 1.25 "A" current. H-C cat, Late Summer '27 $74.75. Jones plug allows eliminator or DC operation. 7x24 inch panel.

Tyrman Ten

" " " " " " "

Super Ten

November 1927

2 Drum

" " "

340

Ernst Tyrman

" " "

(Kit)

CRCB - November 1927 - P147 - Construction

CRCB - November 1927 - P147

Used "Abox" eliminator & "Thordarson Power Amp".

Tyrman Ten [AC]

" " " " " " "

A-C One Spot Ten

November 1927

2 Drum

" " "

340

Ernst Tyrman

" " "

CRCB - November 1927 - P13

Tyrman 80

" " " " " " "

Tyrman Imperial '80' Custom-Bilt Shielded Grid [DC]

October 1928

8 x 21

" " "

Tall Rectangular

(340)

Impedance

Ernst Tyrman

" " "

Beckley Ralston Cat. - Xmas 1928 - P17 - Kit

CRCB - November 1928 - P52 - Construction

CRCB - November1928 - P54

Barawik Cat., Sp & Summer '29: Tubes used: 3 - 222 AC Shielded Grid, 4 - 227 tubes. List $134.50; $79.08. Genuine wood-walnut impressed on steel. Also, see R, Mar '29, 333, for another schematic.

Tyrman 80

" " " " " " "

Tyrman Imperial "80" Custom-Bilt Shielded Grid [AC]

October 1928

7 [+ 3]

[3] 222, [4] 227, & [1] 250

8 x 21

" " "

Tall Rectangular

(340)

" "

Ernst Tyrman

" " "

RSWC - October 1928 - P24 - Complete

CRCB - November 1928 - P52 - Construction

CRCB - November1928 - P54

Shortwave plug-in coils, dynamic speaker hookup, & phono hookup. Barawik Cat., Sp & Summer '29: Tubes used: 3 - 222 AC Shielded Grid, 4 - 227. In the power supply: 1 - 250 or 210 tube and 2 - 281 tubes. List wired $233.50, $137.30 with factory assembled power supply. Kit with Power Pack List $199.50, $117.30. Factory-built Power Pack List $66.50, $38.22. Genuine wood-walnut impressed on steel. Also, see R, Mar '29, 333, for another schematic.

Tyrman 72

" " " " " " "

Tyrman '72' Custom-bilt Screen Grid [D-C]

October 1928

8 x 21

" " "

Tall Rectangular

(340)

" "

Ernst Tyrman

" " "

Barawick Catalogue - Spring & Summer 1929 - P103 - Kit/Wired

A lesser version of the Tyrman 80. On sight, "the '72' closely resembles the '80' except the front panel is of metal with burl-walnut finish". Seven tubes used with batteries. Three 222 A-C Shielded Grid & 4 - 227 tubes. List $98.50. Allied, late '28: $57.92. Barawik Cat. Sp & Summer '29: Factory wired $77.92.

Tyrman 72

" " " " " " "

Tyrman '72' Custom-bilt Screen Grid [A-C]

October 1928

8 [+ 1]

8 x 21

" " "

Tall Rectangular

(340)

" "

Ernst Tyrman

" " "

RSWC - October 1928 - P24 - Complete

A lesser version of the Tyrman 80. On sight, "the '72' closely resembles the '80' except the front panel is of metal with burl-walnut finish". Eight tubes with a 9th in the power supply. Three 222 A-C Shielded Grid, 4 - 227 tubes, 1 - 171A, & 1 - 280 tubes. The 280 in the Power Supply. List $98.50 and Power Supply $55. Barawik, Sp & Summer '29: AC kit of parts list $153.50; $90.26 Power supply list $55; $32.34.

Tyrman 60

" " " " " " "

Tyrman "60" Custom-bilt Shielded Grid

October 1928

7 x 18

" " "

Tall Rectangular

(340)

" "

Ernst Tyrman

" " "

R - October 1928 - P43 - Complete

Six tube, battery or eliminator version of the Tyrman 70. "Has one double purpose tube"; Autodyne. Used 3 - 222 shielded grid tubes, 2 - 201As, & 1 power tube. CRCB, Nov 28, P31, Complete. Allied, Late '28 says: "Includes...one antenna and oscillator coupler..." "List $69.50. Allied's price: $40.86". Beckley Ralston catalog, Xmas '28: $69.50. Barawik Sp & Summer '29: Complete kit $40.86, Factory wired $60.86. Westrad, Fall '28: Lists "Wired less tubes $60.87".

Tzigan

Elite Radio Stores ^

Tzigan Reflexed Super Heterodyne ^

1925 ^

No untuned, no tuned, 4 IFs, 2 Audio ^. $125.00 ^. Used Dry Cell batteries for UV-199s??

19 672

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Ultra-5

n / a

Ultra-5 Super-Heterodyne

March 1927

UX201A, 112 or 171

7 x 21

n / a

Silver Marshall Model 110-A Plug-in Coil

NIF

Air

n / a

Theoadore H. Nakken

NIF

New York City

RN - March 1927 - P1120 - Construction

RN - March 1927 - P1120 - Scheme, Layout, & Wiring

A 5 tube adaptation of the Ultradyne L-1. Used Lacault's Modulation System of heterodyning, where the plate of the first detector is at ground potential (no B+ applied). Silver Marshall 110-A Plug-in Coil used for the only IF transformer. Had homebrew Antenna & Oscillator coils. No typical IF transformers used as it has only one stage of Intermediate Frequency, through which the frequency can be varied without detriment to any other part of the circuit. Audio output used a large choke to accomidate either a 112 or 171 tube. The latter used if operator had a power supply rather than B batteries. Construction also found in Radio New Amateurs' Handibook for 1927. Some info from David Willenborg. 7x21 inch Lignole panel which is recommended for it, which is already drilled and engraved.

Ultradyne AC Commander

Ultradyne Sales Company

Ultradyne A.C. Commander

June 1928

8 [+ 4]

8 x 24

Ultradyne Sales Company

115

Air

R. E. Lacault ??

Chicago

RLG - June 1928 - P159 - Complete

RLG - June 1928 - P96 - Construction

RLG - June 1928 - P97

This is a new company in Chicago for the Ultradyne concept. This set is "all electric" using only 60 cycle AC. Separate power supply has 7x12 inch panel. Tubes are Sovereign AC. Used the original Lacault "Modulation System". Has first stage as tuned RF amp. Both osc. & mixer are shielded. Uses Tyrman drum dial. See Lacault, Madison, Phenix, Ray-Dee-Artcraft, R.E.L, Strobodyne, and Ultradyne.

Uniradio Manufacturing Company

Super-Unidyne

August 1924

K / P

5, 6, 7, 8

Uniradio

Tuna Can

30-50-100

Air

Detroit

WA - August 1924 - P90 - Kit / Parts

Combines TRF & Super, but not a hybrid. Four (4) tuning dials "which tune together" & six (6) pots! Can be set up as a 5, 6, 7, or 8 tube set. "Three tube Super with two stages of TRF amplification and any form of audio which may be desired." "TRF amplification plus oscillator action give all signals additional strength, regardless of distance. One stage IF amplification assures full volume and a clear, pure tone without distortion." "Complete kits for any kind Super may be purchased at prices ranging from $7.50 to $20." IF transformer is made in three frequencies (30-50-100 KC) and schematics/layouts for 5, 6, 7, & 8 tubes for any type Super. WA, Oct 1924 ad: $16 for kit. Good ad also RB, Oct '24, P530ish. (Schematic available)

Utz

n / a

Seventeen Tube, 200 Pound AC Super-Heterodyne

July 1927

17 - 201A

(10 x 72)

9 +

1 -V & 1 - MA

NIF

William C. Utz

Westminster, Md.

RN - July 1927 - P54 - Short Article

RN - July 1927 - P54

Published letter, in RN, July 1927, from Utz about his 5 foot long, 30 inch deep, 200 pound set! Covered 35 to 1000 meters. Could be switched between a regenerative, set, a TRF receiver, or a superhet, using from 4 tubes up! RF and First Detector have three ganged condensers with "proper verniers and conpensators". Used a Western Electric 7A three tube amplifier [not shown] for a total of 17 tubes!! Used 110 volt AC. AC filament wire ran through metal tubing which eliminated the HUMMM. Scheme has limited values. Said most parts were not standard, off-the-shelf parts. Used 300 foot outside wire 60 feet up. On speaker it could be heard more than a mile away! One of a kind set at 93 Liberty street, Westminster, MD. 72 inch irvory, gold and black panel.

Victor

Victor Phonograph Co. & Radio Corporation Of America

Borgia I Orthophonic - Model 9-3 ^^ [DC]

1926 ^

RCA Catacomb

Camden, N. J.

Manufactured

[Note 18 - RCA 1-58]

Radiola 28 ^^. Storage battery-operated radio. (Note 12:) An agreement in 1925 produced Super-Het phono panels for this Victor and RCA combination. Referenced in RRET, Jan '26, P57. Spanish cabinet finished in mahogany with maple overlays blended. $675 ^.

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Borgia II Orthophonic - Model 9-2 ^^ [AC]

1925 - 1926 ^^

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Radiola 28. Electric. 1927 Haynes Griffin ad says "Borgia II Model differs (from Hyperion) only in cabinet design and style of reproducer...full (sic) electric operated both for radio and Victrola". Referenced in RRET, Jan '26, P57. "Has concealed directional built-in loop antenna. Tubes used are 7-UX199, 2-UX216B, 1-UV876, and 1-UX210." A jack allows for separate external speaker. The Italian Renaissance cabinet is finished in blended walnut. Replaced by the 9-40 in Oct 1926 with some modifications ^^. $1000.00 ^^.

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Alhambria II Orthophonic 7-2 ^^

1925 - 1926 ^^

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[Note 18 - RCA 1-57]

Radiola 25 ^^. The Alhambra I had a Radiola 20; the Model II exactly the same but with Radiola 25. Referenced in RRET, Jan '26, P57. Spanish cabinet finished in mahogany with maple overlays blended. $425.00 ^^.

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Florenza Orthophonic - Model 9-1 [DC] ^^

January 1926 ^^

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[Note 18 - RCA 1-57]

Radiola 25 ^^. Storage battery-operated ^. Referenced in RRET, Jan '26, P57. Italian cabinet finished in blended walnut. $550.00 ^^. Later $475.00 ^^.

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Florenza Orthophonic Electric - Model 9-1 [AC] ^^

January 1926 ^^

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[Note 18 - RCA 1-57]

Radiola 25 ^^. Electric. Referenced in RRET, Jan '26, P57. Italian cabinet finished in blended walnut. $585.00 for electric ^^.

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Hyperion Electrola ^ (A-C / D-C)

1926 ^

8 [10 / A-C] ^

" " " " "

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[Have eBay Pix]

[Note 18 - RCA 1-58]

Radiola 28. 1927 Haynes Griffin ad says "Hyperion is full (sic) electric operated both for radio and Victrola. Included in a magnificant Italian Renaissance (Orthophonic) design are an eight tube Superheterodyne in combination with a power cone reproducer. Electric power amplification can be applied to the radio or Victrola as desired. Loop operated and no ground or aerial required." Referenced in RRET, Jan '26, P57. Italian cabinet finished in walnut with maple overlays blended. Reproduction thru 10 inch cone. "Has a compartment and pilot lamp, fixed top, drop panel and four doors in front." $900.00 ^.

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Orthophonic - Model 9-15 ^^ [DC]

Late 1926 ^^

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Radiola 28 ^^. Storage battery-operated ^. This Victor replaced the Borgia Model I. $600.00 ^. Electric turntable version $635 ^^.

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Orthophonic - Model 9-40

October 1926 ^^

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[Note 18 - RCA 1-65]

Radiola 28. Electric. Likely the tubes used are 7-UX199, 2-UX216B, 1-UV876, and 1-UX210." Replaced the Borgia Model II in Oct 1926 with some modifications ^^. $1000.00 ^^.

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"Electrola Radiola - Model 9-25" ^ (A-C)

1927 - 1928 ^^

" " " " "

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[Note 18 - RCA 1-65]

Radiola 28 & 104 ^^. $1150.00 ^.

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"Electrola Radiola - Model 9-55" ^ (A-C)

November 1927 ^^

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Radiola 28 $1550.00 ^.

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Electrola Model 9-16 ^ (A-C)

1928

" " " " "

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750

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Automatic Electrola Radiola - Model 9-54 ^ (A-C / D-C)

1928 ^

" " " " "

" " " " " "

[Note 18 - RCA 1-66]

Radiola 64 ^^. $1350.00 - basic model ^.

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Automatic Electrola Radiola - Chinese Chippendale - Model 9-56 ^ ^^ (A-C)

December 1928 ^^

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Radiola 64 ^^. $1750.00 ^.

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Electrola Model 9-18 ^ (A-C)

1929 ^

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Radiola 64 $925.00

18 690

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Victoreen

Victoreen Radio, Inc.

An Improved Super Heterodyne Set Using Victoreen Transformers

September 27, 1924

8 - 201A

(8 x 28)

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

H.G. Silbersdorff, builder

Cleveland

(New York "Evening World" - September 27, 1924)

From printing on blueprints on eBay, 2/11/02: "Editor's note states the author's original story appeared in the New York "Evening World" September 27, 1924. H.G. Silbersdorff was the writer of the article and discusses the layout, what to do, what not to do, what types of tubes to be used, (301A or 201A). There is a list of parts required to build this set as well as the estimated cost of the materials. ($50.-$75.00) There is some writing in pencil on it and the aforementioned stamp by the Sales Rep, Hartzell Sales Co. of Chicago. Blueprints measure 17 x 27 inches.

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Super Heterodyne Kit

February 1925

n / a

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

PR - May 1925 - P42 - Kit / Parts / Blue Prints

RR - May 1925 - P55 - Construction

RR - May 1925 - P556

Used six coils. First is the "HetroCoupler", 2nd is the "Oscillator" Coupler, and then 4 IFs. IF worked at 88 KC, chosen because it gave the "least trouble with harmonics". First mentioned in PR Feb '25 issue on page 190, the "What's New" column. Good construction in RR, May '25. Recommended 7x26 inch panel, but a 22 or 24 will work according to RR, May '25. Though Charles was Victoreen's first name, he was called John, his middle name. See "George W. Walker Company" for more.

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Super-Heterodyne Eight

February 1925

M / PW

8 - 201A

(8 x 28)

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

PR - May 1925 - P42 - Kit / Parts / Blue Prints

RR - May 1925 - P55 - Construction

RR - May 1925 - P556

I believe this radio [#302] was built by the Victoreen Laboratory before the court order was placed making manufactured superhets illegal. In any event, this is an extremely rare, factory-manufactured Victoreen. The following taken from the eBay description of 2004: This radio has a nice engraved panel indicating “Victoreen Eight”, and has a glued on piece of paper inside the cabinet identifying it as a Victoreen Laboratory Super-Heterodyne with s/n 302! It is the only superhet I’ve seen, aside from the RCA sets, that has had a serial number. I did not take a photo of this, but the back of the panel has scribe marks where the holes were located for drilling, and it is also marked with the number 302! I doubt that a normal builder would mark the back of the panel with a number 302, but I also doubt that the factory would still be using scribe marks to drill every hole after making 302 sets. The antenna coupling transformer is missing, the wires behind the loop jack have been cut off and a small variable capacitor has been added, but everything else is original. Address of the Victoreen Laboratory on the label changed from 7817 Carnegie Avenue to a pencilled in 1900 E 93, Cleveland.

Victoreen

George W. Walker Co.

Super Heterodyne Kit - Type "OM"

November 1925

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

RN - November 1925 - P684 - Kit / Parts for Complete Set

Arrangement of oscillation coil changed to front, center of baseboard. George W. Walker advertised as the "Merchandiser of Victoreen Products" and also called himself a "Marketing Rep" for Victoreen. CRCB, Fall '25, P166, Kit / Parts. RN ad says each kit had 5 units: 3 - No. 170 RF Transformers, 1 - No. 175 Antenna Coupler [for loop only], & 1 - No. 150 [Oscillator] Coupling Unit. For outside aerial, No. 160 Antenna Coupler is required extra.. Kit $33.50. "UV199 or 201A Type of Tubes may be used. A truly Victoreen Feature. 'B' Battery consumption is remarkably low -- 8-10 milliamps, with Potentiometer at negative side." [Incidently, a bit later the Type "171" IF transformer was introduced for specific use with the 199 type tubes. Referenced in Rowan Radio catalogue of late 1927.] RN, Sept '26 says there is a variable capacitor inside the case connected to the secondary of each IF coil. The nut on the outside of the case changes the capacity to "match" each unit to its peak. Also, the "One Dial Master Control Unit" advertised in RN, Jan '27, P886. Seen in Spring 1926 Barawik, P23, for $29.25. Complete kit $79. 7x24 inch panel. According to AWA article [Ohio's Radio Industry in the 1920s] by D. K. Owens on page31, Victoreen announced the formation of a company to make (manufacture complete) Super Hets. "He produced a line of 1930 models, but vanashed after that." Not so!

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1926 Model Victoreen Super

February 1926

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

CRCB - Summer 1926?? - P99 - Complete / Parts

CRCB - Summer 1926?? - P116 - Features & Parts List

CRCB - Summer 1926?? - P98 - Layout

Three-part construction series by Herbert E. Hayden in RWI beginning Feb 20, 1926 (27 & Mar 6 & 13). Schematic: RWI, Feb 27, '26, P14. Also, lite schematic: RWI, Sept 18, '26, P7. "Type 170" IFs. Barawik: Complete, September '26, $89.15; Oct '26: $77.36. Chicago Salvage, Nov '26, $78.50. 7x24 inch panel recommended, possibly 7x26 inch suggested.

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Victoreen Super Heterodyne

September 1926

7 x 24

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Cleveland

CRCB - September 1926 - P118 - Parts

CRCB - September 1926 - P119 - Construction

CRCB - September 1926 - P123

RWI, Sept 18, '26, P3: Lite Construction. Barawik Catalogue, Oct '26, P22, Complete: $89.15. 7x24 inch panel.

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1927 Victoreen

September 1926

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Herman Bernard / Arthur Lynch, builder

" " "

RWI - September 11, 18, 25, 1926 - P3 - Lite Construction

RWI - September 18, 1926 - P3

Lynch Power Supply/Amplifier constructed separately. Major construction change is inclusion of 1 mfd bypass caps in parallel with .5 meg resistors in the B+.plate leads (to allow higher B+) to allow adaptation of Lynch power supply/audio amp combo. The Sept 25th installment has the lamp-socket power supply and audio amp for this Victoreen. Special choice of tubes stressed: 2-CECO type H detector, 3-CECO high mu type G, 1-CECO type A. Lynch says "It would be hard to find a Super-Heterodyne which has given the home constructor more joy and less trouble than the Victoreen…In almost every instance, the builder of a Victoreen has been pleased with its performance from the beginning and the ordinary buzz has been noticably absent." Bernard followup: RWI, Oct 2, '27, P? Either 8x22 inch or 7x21 inch panel.

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Victoreen Master Control Unit

September 1926

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

Barawik Co. Catalogue - October 1926 - P22 - Complete

This is the unit that combines two variable capacitors into one center-panel dial. Barawik: Complete, September '26: $98.50

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New Victoreen Universal with Master Control Unit

October 1926

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

Barawik Co. Catalogue - October 1926 - P22 - Complete

Earliest version of the "One dial" Victoreen. Used the "Master Control Unit". 7x26 inch panel. Barawik: $98.50. Might have appeared in RWI, Sept. 18, 25 & Oct 2, '26, articles by Arthur Lynch, "The 1927 Victoreen" and Herman Bernard, "Wiring up the Victoreen".

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Victoreen Super Set Parts

February 1927

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

RN - February 1927 - P1002 - Kit / Parts

Lists "No. 170" as the IF transformer, "No. 160" is Antenna Coupler, and "No. 150" is Coupling Unit. The "No. 171" for dry tubes advertised in RN, Nov '27.

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Six Tube Victoreen

February 1927

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Herman Bernard

" " "

RWI - February 19 & 26, 1927 - P?? - Construction

RWI - February 19 & 26, 1927 - P??

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Victoreen De Luxe Portable

May 1927

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Robert S. Alter, builder, Cincinnati, OH

" " "

RWI - May 21, 1927 - Part 1 of 3 - Cover - Construction

RWI - May 21, 1927 - Part 1 of 3 - P3 - Scheme

Nicely designed portable in RWI, May 21 (scheme), 28 (layout data), and June 4 (construction) 1927, three parts.

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Victoreen Automobile Super

July 1927

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

John F. Rider

" " "

RWI, July 23 & 30, 1927, P?? - Construction

RWI, July 23 & 30, 1927, P??

Car radio in RWI for July 23 & 30, 1927, two part series. John F. Rider, of the schematic book fame, built this.

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Universal 112 [Storage Battery Tubes]

September 1927

7 - 201A & 1 - 112

7 x 26

1 - V

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

Hamilton Carr Catalogue - 1928 - Kit

CRCB - November 1927 - P124 - Construction

CRCB - November 1927 - P97

Used new single unit push-pull audio transformer Model 112 using UX112 power tube. Single or two dials. Model 170 IFs for 201A storage battery tubes. Model 171 IFs for 199 dry cell tubes. Have full sized schematics. Four part series by Capt. P. V. O'Rourke in RWI started Sept 3, '27 (10, 18, & 25). H-C cat. Late Summer 1927, $62.40. S. Hammer Radio Co. offered a completely wired set in Corbett cabinet for $157 in Sept '27. American Radio Co, Catalog #117, Pg42, Sept 1927 (X). See directly below.

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Universal 112 [Dry Cell Tubes]

September 1927

7 - 199 & 1 - 171

7 x 26

1 - V

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

Hamilton Carr Catalogue - 1928 - Kit

CRCB - November 1927 - P124 - Construction

CRCB - November 1927 - P97

Used new single unit push-pull audio transformer. Single dial promotede, but it might have the typical two dials. Model 171 IFs for dry cell tubes. See directly above.

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AC Victoreen

February 1928

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Capt. Peter V. O'Rourke

" " "

RWI - February 1928 - P3 - Construction

Two part article by Capt. Peter V. O' Rourke. Victoreen 112 audio transformer passes 16 to 5,000 cycles. Genuine CeCo, RCA, or Cunningham tubes recommended. Panel 7x24 inches.

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New Victoreen A-C Circuit

June 1928

TL or W

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

" " "

RN - November 1928 - P468 - Complete

CRCB - November 1928 - P44 - Construction

CRCB - November 1928 - P46

Called the "Master Super Heterodyne" in CRCB, March 1929. Victoreen Power Amplifier & "B" Supply Used 2 - 81 and a 310 tube. Power Supply is $66.15 in Westrad, Fall '28.

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New Victoreen Transformer

September 1928

n / a

Victoreen

Vertical Half Tuna Can

(New Freq)

Charles J. Victoreen

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CRCB - September 1928 -P11 - IF Transformer

New Victoreen Transformer Model 172. Says it has new IF frequency. Promotes new 1929 A. C. Circuit. 2825 Chester Avenue, Cleveland, Ohio

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Improved Victoreen Universal [A-C]

February 1929

Victoreen

Vertical Half Tuna Can

" "

Charles J. Victoreen

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RN - February 1929 - P784 - Complete

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Improved Victoreen Universal [D-C]

February 1929

Victoreen

Vertical Half Tuna Can

" "

Charles J. Victoreen

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Barawick Catalogue - Spring/Summer 1929 - P99 - Complete

Vastly improved "...Super Transformers for 1929" and the "...circuitry itself contains improves far ahead of its time". Promoted as "The Standard Of the World". (Thought Cadillac was?) DC unit because many communities didn't have 110 volt AC. The 1929 model 172 IF xfmr not mentioned. Barawick Cat. Sp/Summer 1929 DC unit $56.95. RWI, Ap 20, '29, P4: Victoreen "surplus" parts blowout article. $37 kits sold for $6. Obvious demised of Victoreen. This is the last Victoreen in the decade: The "George W. Walker Super-Converter" (attached to your TRF radio at the antenna post to convert it to a Shortwave Superheterodyne radio.) was offered Nov. 1930 per CRCB (Vol. 11, No. 4) for Nov. 1930.

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Victoreen A-C Console

October 1929

Victoreen

Vertical Half Tuna Can

" "

Charles J. Victoreen

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RN - October 1929 - P346 - Details for "Console"

"One untuned RF: 27, Oscil: 27, 1st Det: 27, 3 IFs: 27, 2nd Det: 27, 1st Audio: 27, 2nd Audio: 50, 2 Voltage Reg Tubes, 2 - 81 Rect Tubes, 1 - 201A, and 1 - 'C' Rect. Superheterodyne."

Victoreen - Citizens Callbook

George W. Walker Co.

Victoreen Universal

December 1926

Victoreen

Vertical Tuna Can

" "

Charles J. Victoreen

" " "

CRCB - March 1927 - P107 - Construction

CRCB - November 1927 - P110

Articles by Ralph g. Hurd in RWI, Dec 11 & 18, '26 (P??). Two audio transformers for push-pull. Single or two dials. Used Silver-Marshall parts. 7x26 inch panel.

Victoreen - RWI

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Victoreen Portable

June 1926

Victoreen

Vertical Tuna Can

Air

Charles J. Victoreen

Herman Bernard

New York City

RWI - June 26 & July 3, 1926 - P??? - Construction???

RWI - June 26 & July 3, 1926 - P???

VirBren DX

Radio Instrument Company Inc.

DX Radio Frequency Amplifying Transformer DX-2H

January 1923

n / a

Radio Instrument Co.

Rectangular

Air

Brent Daniel

Washington, DC

RN - January 1923 - P1389 - Parts

Radio, Jan '23, P21: Article on RF amplifier shows these transformers, tho, not as a Super. Shown RN, Jan '23, P1389, Parts. Patented Dec. 19, 1922. The first "plug-in" transformer. "First on the market" which is debatable as RCA advertised the 714 & 716 in the same RN issue as the Vir Bren transformer was shown in an amplifier article. Transformer "DX-2" (long rectangular design) peaks at 3300 meters. Location: 930 "D" St. NW. Washington, DC

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VirBren DX

December 1924

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Brent Daniel

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QST - January 1925 - P94 - Kit

QST - December 1924 - P9 - Transformer "DX-2H" only

Transformer "DX-2H" (long rectangular design) peaks at 3300 meters. Ad in Mar '25, PR, P120, says 5000 meters are used in the DX-2H IF transformer ($6.60). Super includes DX-Input transformer ($6.60), oscillator coil ($3.00), antenna coil ($2.50), and blueprint (75 cents). Used 16 inch loop.

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Salesman's Set

October 1927

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Brent Daniel

Robert S. Alter, builder, Cincinnati, OH

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RW - October 1, 1927 - P6 - Lite Construction

RW - October 1, 1927 - P7

Used the transformer "DX-2H" (long rectangular). See above. Panel 14x4 1/2.

Voice Of The Praire

W. W. Grant Radio Ltd. [Canada]

Voice Of The Praire Seven

1927

W. W. Grant Radio Ltd.

Calgary, Canada

AWA OTB - August 1992 - P19 - History Article

Three tuning dial set. AWA OTB article written by Dr. Robert P. Murray, "Brief History of W. W. Grant" (Canada). Used "peanut tubes" (R215-A)

24 714

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

Webb, F. F.

Genuine Standard Super-Heterodyne

November 1924

F. F. Webb

Webb [Note 6] - Construction

Webb [Note 6] - P15- Scheme

See Consrad above.

Webb, F. F. ??

Super-Heterodyne

July 1924

Haynes Griffin

Rectangular

F. F. Webb

Pix from RB, July 1924

Webb, Harold C.

Super-Heterodyne Construction

March 1926

(Not specific)

Air or Iron

Harold C. Webb

RB - March 1926 - P589 -Construction Tips

RB - March 1926 - P589

"Timely Hints and Construction data are Given for the Benefit of Those Contemplating the Construction of Such a Receiver." Developer used DeForest DV-2s. Developer designed 9600 meter Input Coil. Last audio output Push-Pull.

Webb Tuned Filter Super

10000 Meter Tuned Filter Super-Heterodyne

December 1924

Iron

W. F. Webb

Note 23

Very limited information. Just scheme. W. F. Webb is likely developer as it's from his book. Could use Acme 30KC Ifs.

Welty

William Welty

Welty's Super kit

September 1926

n / a

William Welty

Cylindrical

William Welty

Chicago

CRCB -September 1926 - P228 - Kit / Complete

RWI, Oct 30, 1926, Inside Front Cover, Kit: Antenna Coupler, Osc. Coupler, special Variable Condenser, Tuned Input Transformer, 3 Matched IFs and hardware, Booklet, and Diagrams. $17.50. Later Super Het kit with Welty's Shielded Oscillator: $22.50. Complete kit (all parts) $73.50.

Weisenmayer, R.

Super Heterodyne Sets

February 1924

n / a

Chicago

RDI - February 2, 1924 - P31 - Sets Built

Small ad early on.

Werner

Werner Radio Mfg. Co.

Werner Radio Frequency Transformer ???

n / a

Werner

Brooklyn. NY

Western Electric

3-A

(1922)

Western Electric

Boston

Manufactured

Built to sell commercially. Exceptionally rare! Distinctive binding posts along both sides vertically. Claude Kagan owns one. See Pix

" " " " "

4-A

October 1922 ^^

Western Electric

" " "

Manufactured

Built to sell commercially. Has three IF stages which was said to be more than adequate. These why the 4-B has only 2 stages. (Note 7 - P79).

" " " " "

4-B

January 1924 ^^

" " " " "

Flat Rectangular

" " "

Manufactured

Leutz (Note 7 ) - Fig.47

Has two IF stages (Note 7 - P79). Designed to use the WE215 "Peanut Tube" also called the "N" tube - Filaments in series - Volume limited by these tubes. Output is fed to the WE Power Amplifier (14A or 10A) for better volume. Designed for loop use only. Leutz in his book "Modern Radio Reception" show how to convert it to antenna, also."It is believed that their receiver is known as a double detection system and is constructed on the Hammond patents. Their receivers are only sold for commercial purposes and are not available for amateur purposes (from "Modern Radio Reception", P79)." Used a lot of tube & front panel shielding. Free from reflexing. First Super Het installed in the White House in early 1924 ^^.

" " " " "

4-C

1924

" " " " "

Flat Rectangular

" " "

Manufactured

Different from the 4B in that is has another jack on the front panel.

" " " " "

4-D

1924

" " " " "

Flat Rectangular

" " "

Manufactured

Different from the 4B in that is has more jacks on the front panel. Reorganized after selling to its employees in 1926 ^^. All radios produced thereafter was sold as "Graybar" from the founders of W. E. , Gray and Barton ^^.

" " " " "

Type 6004C

April 1926

" " " " "

" " "

Manufactured

RN - April 1926 - P1455 [2159] - Lite Construction

RN - April 1926 - P1455 [2159]

Very rare scheme and construction details. 50 to 60 K. C. IFs were suggested. Used W. E. "N" type tubes or could have used 199s.

Western Electric (Canada)

Western Electric Company, Ltd. (Canada)

44002

1924 ^^

Manufactured

Based on the "4A" ^^.

Western Electric - Coast Guard Super

Western Electric

Coast Guard Double Detection Super

1925

8 - Western Electric 215A "N" "Peanut"

(12 x 26)

1 - MA

Western Electric

Flat Rectangular

N.Y. Herald Tribune - January 3, 1926 - Informative Article

N.Y. Herald Tribune - January 3, 1926 - Scheme

Three dials. Double detection Super means it has a first and second detector. This set is designed to receive code tones rather than speech. Grid leak for the first detector stage is output of the oscillator (through its grid circuit); thus, no pickup coil is necessary. All 8 tubes are connected in series. Has numerous small panel lights to indicate the tube is operating properly. All sections are shielded. Tuned grid oscillator is used. If an amateur would build this set, it's recommended to use a 30 KC IF and WD-11 or WD-12 tubes.

Western Radio Mfg. Co. ^

1929 Nine Tube Screen Grid Laboratory Super

September 1928

(Silver Marshall)

(McMurdo Silver)

Chicago

Advertising Brochure

"Radio Collector's Guide ^" says Silver-Marshall radios were sold by Western Radio Mfg. Co. - Used two ?? stages of 65 KC IFs. The SM 700 two-tone brown metal shielding cabinet is $5.55 extra. $ 55.32 complete. Barawik Cat., Sp & Summer 29: $55.98. Used 6 - 222, 2 - 201A, and 1 - 112 tube.

White

Four Tube Super-Heterodyne

May 1924

Honeycomb

Charles H. M. White, Consulting Engineer

RWI - May 1924 - P?? - Construction

RWI - July 26, 1924 - P10

Construction: RWI, May 31, June 7, 14, 21, 1924. Troubleshooting by Wainwright Astor: RWI - July 26, 1924 - P10. One stage of RF/mixer, oscillator, and two stages of AF. NO DETECTOR. Oscillator coupler is homebrew. The IF transformer is four DL 1500 turns. A fifth DL 1500 can be added for additional v olume. RWI, July 26, '24, P10: This schematic is slightly different than original article. Some part values also different here.

" "

Four Tube Reflexed Super-Heterodyne

June 1924

" " " "

Charles H. M. White, Consulting Engineer

RWI - July 26, 1924 - P3 - Construction

RWI - July 26, 1924 - P3

"Three stages of RF, oscillator, crystal detector, and two stages of AF are accomplished…by reflex." Used "standard type of (oscillator) coupler." Designed for 199s. The 3 IF transformers are DL 75 turn and DL 350-400 turn honeycomb coils, tightly tied together for close-coupling. Good AF transformers used to reflex. Also, schematic & brief construction shown in "Radio Progress" for June 1, 1924 on Page 8.

Wilkerson

Novel Superheterodyne Using An Electrolytic Detector

Summer 1926

(201A)

NIF

(5)

L or W

D. C. Wilkerson

RN - Note 21

RN - Note 21 - Lite Scheme

Had only six tubes because designer used a galena crystal detector and an Zincite ["Crystodyne"] detector. Wilkerson give limited circuit construction info, but did say he would use an IF of 35 KC to 45 KC. RF choke used in the oscillator circuit. See Note 21, RN, "Superheterodyne" book.

18 732

COMMON NAME

MANUFACTURER / DISTRIBUTOR

MODEL

PIX

FIRST OFFERED

HOW OFFERED

NUMBER OF TUBES

TUBE TYPES

FRONT PANEL SIZE

MAJOR TUNING DIALS

ADD'L PANEL KNOBS

METER

WIRE OR LOOP

IF / FILTER MFG

IF / FILTER SHAPES

IF PIX

IF PEAK (KC)

IF CORE

FILTER CORE

CIRCUIT DEVELOPER

PIX

BUILDER

PIX

WHERE DEVELOPED

ADVERTISING

PIX

ARTICLE

PIX

SCHEME / PARTS LIST

PIX

DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS DETAILS

(Unidentified)

50 kilocycle Super-Heterodyne

Mentioned in an ad for CRCB - Nov '24 - P109.

(Unidentified)

(HAVE PICTURES OF THIS ONE)

(Unidentified)

(Resistance Coupled)

March 1923

Referenced in RN June 1923 P2152

(Unidentified)

Heterodyne Circuit Super-Heterodyne

Early 1924

Radsco Catalogue # 11 - Early 1924

(Unidentified)

Non-radiating Superheterodyne

Spring 1925

CRCB - Spring 1925 [Vol 6 #1] - P98

CRCB (Spring 1925 -Vol 6 #1) P121: Said WD12 tubes are used in the first 6 sockets with 2-UV201As in the last two Push-Pull configuration.

(Unidentified)

Custom Built Nine

August 1927

RB - August 1927 - P252

Mentioned as part of a RB listing of "Directory of Manufactured Receivers". "# 463. - $375 - 2 dials - Modulated Volume Control - 9 tubes - 8 '01As & 1 '71 - 40 mA of Current Drawn - Loop antenna". 7x21 inch panel.

RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES RESOURCES

LEGEND A: DEFINITIONS OF THE CATEGORIES

LEGEND B: HOW OFFERED

LEGEND E: FOOTNOTE REFERENCES FROM THE DATABASE

LEGEND H: Miscellaneous Abbreviations

LEGEND L: ABBREVIATIONS OF PUBLICATION NAMES

COMMON NAME: This name appears on the front panel or on the Intermediate Frequency transformers. It could be a brand name or a custom-builder's name.

M = Manufactured

Note 1: From list of blue prints available from Citizens Radio Call Book, September 1927, Page 193

# = This symbol denotes a front panel meter with two scales.

[1 = Newspaper 2 = Magazine 3 = Pulp Magazine 4 = Catalogue]

It's possible the name on the front panel is different from the one on the IFs. In this case, the set is likely a custom-built radio and this database would focus

CB = Custom-Built

Note 2: From list of blue prints available from Citizens Radio Call Book, November 1927, page 193

on the name on the IFs first.

PW = Professionally Wired

Note 3: Pictorial component layout in CRCB March 1927, page 144

n / a = Not Applicable

AWA OTB - Antique Wireless Association Old Timers Bulletin [2]

SA = Semi-Assembled

Note 4: "Man of High Fidelity: Edwin Howard Armstrong" by Lawrence Lessing

CEP - Chicago Evening Post [1]

MANUFACTURE / DISTRIBUTOR: This is the name of the manufacturer or distributor of the radio, the Intermediate Frequency transformers,

K = Kit [Usually only IFs, Filter, and Oscillator Coil]

Bantham Books - March 1969 Edition

NF = Not Found

CRCB - Citizens Radio Call Book [2]

or a specific part such as an Oscillator Coil. Randolph Radio is a good example of a distributor.

CK = Complete Kit and parts

Note 5: From list of blue prints available from Citizens Radio Call book, March 1927, page 228

ERW = Everybody's Radio Weekly [Chicago] [3]

BK = Built from a kit and parts

Note 6: "Super-Heterodyne Theory And Construction" by F. F. Webb, 3rd printing, June 1925

NIF = No Information Found

H-C - Hamilton Carr [4]

MODEL: This reflects the manufacturer's model, the name attributed to the set by the builder, or the name of the radio as provided by a construction article.

B = Built from various parts

First printing, November 1924. An Electro Importing Company / Gernsback publication

NYHT - New York Herald Tribune Radio Section [1]

With over 750 "models", this heading could mean a specific model, an improved version of a previous model, or a builder's variation on a previous circuit,

T = Transformer only

Note 7: "Modern Radio Reception" by Charles R. Leutz, 2nd printing, February 1925

PNF = Picture Not Found

PEPL - Philadelphia Evening Public Ledge - "The Radio" Section [1]

O = Oscillator Coil only

First printing, November 1924

PBPW = Pacific Broadcast Peogram Weekly [1]

PIX: Marked with an "X" if a picture is available.

P = Part(s) Miscellaneous

Note 8: Mentioned in ad for Lignole Panels in CRCB, January 1928, P15

(Ultradyne Six) = Perenthesis around a name denotes a legitimate reference to it

PM - Popular Mechanics [2]

BP = Blueprints and Plans Only

Note 9: From list of blue prints available from Citizens Radio Call Book, January 1928, page 193

was made but true documentation has not been found.

PR - Popular Radio [2]

FIRST OFFERED: The category establishes the first time information was found about this "common name".

KD = KnockDown [Not legal to offer after Spring 1925]

Note 10: "Super-Heterodyne Manual" by Lieut. Victor Greiff from Radio Receptor Press. (Date???)

PSM - Popular Science Monthly [2]

Note 11: From "E*M*Sargent's Official Infra*Dyne Manual, October 1, 1926, First edition, 25,000 copies"

(1924) = Perenthesis around a date denotes the likely date. No documented date found.

QST - QST [2]

HOW OFFERED: A difficult category to define. "Legend B" provides the definitions. "M = Manufactured" is as implied. RCA won a law suit in early 1925 that precluded

Note 12: "Radio Age" (Don Patterson's magazine) series (1977 & 1978) by John Wolkonowicz

R - Radio [2]

any other company from manufacturing a completely constructed Superheterodyne radio. However, there were a few companies that manufactured sets

LEGEND C: Three or more dials [31]

Note 13: Radio Digest - "Radio Receivers - How to Operate & How To Make" (1924)

(RN - February 1928 - P?? - Construction??) = Perenthesis around a source

RA - Radio Age [2]

before the results of the suit were known or blatantly built them anyway without regard to RCA's judgement. "CB = Custom-Built" fits those sets built from kits

Note 14: From list of blue prints available from Citizens Radio Call Book, March 1929, page 152.

denotes the source has not yet been documented.

RB - Radio Broadcast [2]

by a person who constructed Superhets for a living. These were usually owners of radio shops and, in the mid-20s, typically had the owner's name, brand

Baby Heterodyne (4 Dials)

Note 15: From list of blue prints available from Popular Radio, April 1927, page 399

RDI - Radio Digest Illustrated [3]

name, or mark on the panel. This name was unrelated to the kit used as a basis of the radio. By the late 1920s, anyone anywhere with building experience could be

Baby Super

Note 16: From RWI, Nov 8, 24, P32.

RE - Radio Engineering [2]

hired by a national radio company to assemble their sets for resale. This deminished the need to build a Superhet at home while it got around RCA patents.

Best Modified Superheterodyne Shielded Model All Wave

Note 17: n / a

LEGEND I: COLOR CODES IN THE FAR LEFT COLUMN

RITH - Radio In The Home [3]

"PW = Professionally Wired" is a close kin to the previous definition. Some of the documented Superhets appear to be manufactured, but were likely built-up

Camfield 9 Combination Set - March 1927

Note 18: From Riders????

RJ - Radio Journal [2]

in associated, but separate, facilities, thereby, getting around the patent law. "SA = Semi-Assembled" from the late 20s is as the name emplies. The radio was

Camfield 9 "Revised" Combination Set - January 1928

Note 19: From "Modern Radio Reception", Charles R. Leutz

All Or Most Information Found

RLG - Radio Listeners' Guide & Call Book / Radio Review [2]

factory-assembled with the exception of the last few wires. It was expected the purchaser could solder these, keeping the set a "K = Kit". A "CK = Complete Kit"

Camfield 10 Combination Set - November 1927

Experimenter's Information Service, Inc., Second Edition - February 1925

RM - Radio Mechanics [2]

was one sold as a kit with all the associated parts to complete the set. Commonly called a "knockdown" in the industry, the RCA suit prohibited the Superhet

Carborundrum

Note 20: From article in the newsletter of the Northern Indiana Members of the Indiana Historical

Only Some Information Found

RN - Radio News [2]

from being sold as a knockdown; however, it was a way to get around the law. A Superhet as described in a magazine or newspaper article would be "B = Built"

DX Super-Heterodyne

Radio Society. Written by the late Ross Smith of Elkhart, IN. Also published In the

RP - Radio Progress [2]

from parts or "BK = Built from a kit and parts". The rest of the definitions like "K = Kit" and "P = Parts" are self-explanatory.

Experimenter's Information service [From 3 to 4 Dials]

Antique Wireless Association's OldTimer's Bulletin of November 1996, page 43

Only Very Limited Information Found

RR - Radio Review [2]

Fenway Combination Set - Feb 1926

Note 21: From "The Radio News Superheterodyne Book", Radio News, 1926

RRET - Radio Retailer [2]

NUMBER OF TUBES: This reflects the total number of tubes used with some notation.

Flexible DC

Note 22: From "The Portable Super-Heterodyne" by McMurdo Silver, published by

RSWC - Radio Setbuilders Wholesale Catalog [4]

Flexible AC

the Silver-Marshal company of Chicago, 1924.

LEGEND J: SPECIFIC NOTATIONS FROM THE DATABASE

RTD - Radio Trade Directory [McGraw-Hill] Feb 1924 and Aug 1925 [4]

TUBE TYPES: In order to restore a Superhet that has lost its tubes long ago, this category should be of great help. Some of the early designs allowed for the use

Fournier

Note 23: From "100 Radio Hookups" by W.F. Webb - 3rd printing -

RW - Radiocast Weekly [2]

of several tube types to be interchangable, such as the UV201A.and the WD12 or the 199 with an adapter. Later in the decade, new tube types were introduced

Goldsmith Short-Wave Code Super (4 Dials)

December 1924 - Page 54

^ - Rider's Original Radio Advertising Guide (1931?), later "Radio Collector's

RWI - Radio World (Illustrated) [3]

for a variety of uses in Superhet circuits, including the screen grid tubes, 171, 250, and etc. The first tube-type in the list is the type recommended over the next

Haynes-Griffin Deluxe "A"

Note 24: From fantastic Armstrong/Houck historical web site:

Guide" (McMahon - 1973)

WA - Wireless Age [2]

tube-type(s) listed. As an example, "201A or 199" denotes the set was designed for the 201A type tube, but a 199 will also work; however, the 199 might not

Haynes-Griffin Deluxe "B"

http://users.erols.com/oldradio/index.htm

WCFL - WCFL Radio Magazine [1]

work as well and would need an adapter, of course. The symbol "%" denotes 199 tubes adapters were used in 201A tube sockets.

Langhorne Super

Note 25: Rider's Original Radio Advertising Guide (1931?), later "Radio Collector's

^^ - "Radio Manufacturers of the 1920s" (Douglas - 1991)

Lewis Modern Super-Het

Guide" (McMahon - 1973)

FRONT PANEL SIZE: For identification purposes, this size is given in inches. Realize, the builder might have deviated from the original plans.

Radio World Illustrated Six Tube Super-Heterodyne Using A Variometer

Note 26: "Ryan's Simplest Possible Super-Het Manual" from Radio Digest Publications, Chicago.

^^^ - Wayne Gilbert from articles in the Colorado Radio Collectors' Club

LEGEND M: MOST POPULAR (26)

Radio World Illustrated Six Tube Regenerative Super-Heterodyne

Note 27: "The Radio Dealer Year Book" by :The Radio Dealer" (magazine) New York City

newsletter @ 1998

TUNING DIALS: Some of these radios have more or less than two tuning dials. Legend "C" is a list of those with three or more tuning dials..

Raven

All American 7

Remler - Custom-built and owned by Ron Lawrence

Note 28: From article in Antique Radio Classified for February 2005 written by Art Redman called

^^^^ - AWA / OTB article (November 1887). "Release Date For Popular

Baldwin Pacific

ADD'L PANEL KNOBS: Based on original plans for rheostats and/or potentiometers. Excludes switches and headphone jacks. Also excludes small vernier tuning knobs.

R. C. A. - Pearne Eight Tube Super [6 Dials]

Long Radio Works, Page 6, 7, & 8.

RCA Receivers And Speakers" By Dick Ramsley and Bob Allen. Page11

Branston

Beware. Extra knobs may have been added or a documented knob[s] might not have been used at all.

R. C. A. - Pearne ETen Tube Super [6 Dials]

Brunswick 1

Sleeper Seven Tube Super

^^^^^ = Kent King's Scott Advertiaing Database

EIS / Leutz 13

METER: Based on original plans. Beware. Extra meters may have been added or a documented meter might not have been used at all. On the RCA, Brunswick, and Victor

Turner Combination Super

LEGEND F:

General Radio 8

Superhet panels an optional volt meter could be mounted into the panel or two pin jacks could be attached to the panel for use with an external meter.

Uniradio Manufacturing Company ( 4 Dials)

Haynes Griffin 6

V = Volt and MA = Milliammeter. SV denotes the voltmeter can be switched between three different voltages.

Utz Custom-built

Title taken from the slogan at the top of an ad for E. I. S. in the April 1925 Popular Radio (P49).

LEGEND K: PUBLICATION DATES FOR CITIZENS RADIO CALL BOOK

HFL 10

Voice Of The Praire [Canadian]

Infradyne - Remler 20

WIRE OR LOOP: Recommend antenna type. Long Wire, Long & Short Wire, Loop, or both [W & L] could have been used with an antenna coupler. A Tapped

Western Electric Coast Guard Super

CRCB - May 1924 = Vol. 5 / No. 1

Madison Moore 16

or split Loop [TL] is noted, usually for regeneration in the first stage. Internal Loop = Some of the Brunswick and Victor cabinets had the loop in a side door.

LEGEND G: SPECIFIC NOTATIONS FROM THE DATABASE

CRCB - Fall 1924 = Vol. 5 / No. 2

Magnaformer 11

CRCB - Spring 1925 = Vol. 6 / No. 1

Mercury 15

IF / FILTER MFG: This category is the most critical one. Determination of the radio's source is taken from the name here.

LEGEND D: Hybrid Super Het & TRF Combin

* - Used one Carborundum or crystal detector in place of a detector tube.

CRCB - Fall 1925 = Vol. 6 / No. 2

Microdyne 18

CRCB - Spring 1926 = Vol. 7 / No. 1

Phenix 3

IF / FILTER SHAPES: As an aid in determining a specific model, variation, or year of origin, this category is critical.

Adams 1-2-3

** - Used two Carborundum or crystal detectors in place of both detector tubes.

CRCB - Summer 1926 = (Vol. 7 / No. 2)

Precise

Camfield 9 Combination Set - March 1927 (9 & 5 tubes)

CRCB - Summer 1926 = (Vol. 7 / No. 3)

Raven 19

IF PEAK: This category is for the serious hobbyist or tech-type. When a set is restored, this value helps with the alignment.

Camfield 9 "Revised" Combination Set - January 1928 (10 & 6 tubes)

*** - Dr. M. L. Hartmann, Research Director, and John R. Meagher, Radio Research

CRCB - Spring 1927 = Vol. 8 / No. 1

RCA 1

Camfield 10 Combination Set - November 1927 (10 & 6 tubes)

Engineer, both for the Carborundum Company

CRCB - Fall 1927 = Vol. 8 / No. 2

Receptrad 14

IF CORE & FILTER CORE: This category is for the serious hobbyist or tech-type.

Fenway Combination Set - Feb 1926 (9 & 4 tubes)

CRCB -

Remler 2

Radio Constructor Corporation (Remler) “New 1929 Infradyne”

**** - French translation and American adaptation by R. E. Lacault

CRCB -

Sangamo Pressley 17

DEVELOPER & BUILDER: The developer designed the specific circuit used. The builder put the components together to create a set for an article, for example.

Remler Infradyne Combination Set - Nov 1926 (10 & 5 tubes)

CRCB -

Scott 9

Remler Infradyne DX Conbination - July 1927 (10 & 5 tubes)

***** - Used the five tube Infradyne Combo with a second 5 tube TRF set

CRCB -

Silver Marshall 5

ADVERTISING: Denotes the first time advertising was found for this radio, kit, or part.

Remler Modified Shielded Grid 115 K.C. Super Combination - Nov 1928 (10 & 5 tubes)

to make a 10 tube Infradyne.

St. James

Turner Combination Super

Tyrman 12

ARTICLE: Source and date of the appearance of the radio's construction information.

Utz Custom-built

****** - Switches from Superhet to TRF for local reception only. See Legend J.

Victor 1

Victoreen 4

SCHEME / PARTS LIST: Source and date of the appearance of the radio's schematic, layout, and / or parts list.

DETAILS: A catch-all category to exploit any information about the set or parts whether important or not, in an effort to help identify the product.

Allen Jockem indicates Worcester, Mass as location of manufacturer.