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
Abbott Abbott Radio Mfg. Co. Abbott 8 Compartment Type X February 1927 M 8 8 - 201A or 199 12 x 28 2 - Drum 3 N (L) (Abbott) Thick Square X NIF NIF NIF Harry Abbott     Chicago
" " " " " " " " " " Abbott 8 Table Type X February 1927 M 8 8 - 201A or 199 12 x 28 2 - Drum 3 N (L) (Abbott) Thick Square X NIF NIF NIF Harry Abbott " " "
Acme Acme Apparatus Company Long Wave 30 K.C. Transformer X May 1924 P n / a n / a n / a n / a n / a n / a n / a Acme 30 K.C. Open Frame X 42 Heavy Laminated Iron n / a Cambridge, Mass.
" " " " " " " " " Eight Tube Superheterodyne X May 1924 CK 8 8 - 201A or WD12 or 199 7 x 30 engraved 2 5 - 6 N (L) Acme 30 K.C. Open Frame X 42 Heavy Laminated Iron Two Duo-Laterals Coils " " " " " "
Acme - Benson n / a Benson Reflexed Super-Heterodyne   February 28, 1925 B 6 [+ 1] * 6 - 199 or 201A (7 x 24) 2 3 N L (Acme Type R3) Small Rectangular X 500 Iron NIF Thomas W. Benson NIF
Acme - Custom-Built n / a Seven Tube Custom-Built Superheterodyne X (1926) CB 7 7 - (10 x 24) 2 1 N NIF (Acme Type R3) Small Rectangular X   Iron NIF
Adams n / a Eight-Tube Superheterodyne X October 1924 B 8 8 - 201A 10 (?) x 30 2 7 1 - V L or W Adams Flattened Side Tuna Can X NIF NIF NIF Captain H. J. Adams Camp Vail, N. J.
Aero Aero Products, Inc. Aero Coil Oscillator X October 1925 P n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a Chicago
Aero Dyne Aero Radio Co. Aerodyne Standard X (1924) M 7 7 - 201A NIF 2 3 N L NIF   PNF   Detroit
" " " " " " " " Aerodyne Premier PNF (1924) M 7 7 - 201A NIF 2 (3) (N) (L) NIF   PNF   " "
" " " " " " " " Aerodyne - The Luke PNF (1924) M 7 7 - 201A NIF 2 (3) (N) (L) NIF   PNF   " "
Aircore (Radiophone Equipment Co., The) Aircore Super Eight   September 1924 (K) 8 NIF   2   NIF Aircore   PNF   Air Air
Airkore Radiophone Equipment Co. Airkore Super-Heterodyne Kit X November 1924 K 8 NIF NIF NIF NIF NIF NIF Airkore Cylindrical X NIF Air Air Philadelphia
All American Rauland Mfg. Co. Long Wave Radio Frequency Transformer Model R-110 X May 1924 P n / a n / a n / a n / a n / a n / a n / a All American Misc X 30 Iron Air Chicago
" " " " " " " " " " Super-Fine Kit X September 1924 K 8 8 - 201A n / a n / a n / a n / a n / a All American Tuna Can / Misc X 30 Iron Air " " "
" " " " " " " " " " Super-Fine Super Heterodyne X September 1924 BK 8 8 - 201A or WD12 or 199 7 x 30 2 5 N L All American Tuna Can / Misc X 30 Iron Air A. Elkins " " "
" " " " " " " " " " "Music Room" Super-Heterodyne X September 1925 BK 8 8 - 199 or 201A 7 x 18 2 2 N TL All American Tuna Can / Misc X 30 Iron Air " " "
All-American - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W All American Tuna Can / Misc X 30 Iron Air Gerald M. Best X W. P. Brush, Designer San Francisco
All American - Calcaterra n / a Practical Super-Het   May 1925 BK 8 8 - 199 7 x 18 2   All American Tuna Can / Misc X 30 Iron Air Joseph Calcaterra New York City
All American - Custom-Built n / a Custom-Built Three-Dial Superheterodyne X (1925) CB 8 8 - 201A (7 x 36) 3 9 1 -V & 1 - MA NIF All American Tuna Can / Misc X 30 Iron Air
All American - Randolph Randolph Radio Corporation 8-Tube Super-Heterodyne X October 1924 CK 8 8 - 201A or WD12 or 199 8 x 36 2 5 N TL All-American Tuna Can / Misc X 30 Iron Air Chicago
All American - Standard Radio Supply Standard Radio Supply All American Deluxe 8-Tube Super X Spring 1926 CK 8 8 - 199 7 x 18 2 2 N TL All American Tuna Can / Misc X 30 Iron Air Chicago
AMACO American Apparatus Co. (Amacodyne CN-8)   November 1925 (K) (8)     Richmond, Indiana
" " " " " " " " " " " (Amacodyne CN-9)   November 1925 (K) (9)     " " " " " "
American Radio American Radio Manufacturing Co. Super-Assembly 7 Super-Heterodyne   September 1924 SA 7     Kansas City, Mo.
" " " " " " " " " " " " " " " " " Acme Double 'A' Super-Heterodyne   September 1924 (K) 7     " " " " "
Amplex Amplex Instrument Labs. Cockaday Improved ?? Super-Heterodyne Kit   September 1924 K             New York City
Armstrong Armstrong, Major Edwin Howard Five Tube Super Auto-Dyne   May 16,1918 CB 5     Armstrong Resistance Coupled Resistance Coupled Major Edwin Howard Armstrong, inventor X Paris, France
" " " " " " " " " " " " " Six Tube Super Auto-Dyne   Summer 1918 CB 6     " " " " Resistance Coupled Resistance Coupled " " " " " " " " " " "
" " " " " " " " " " " " " Eight Tube Super Auto-Dyne   Summer 1918 CB 8     " " " " Resistance Coupled Resistance Coupled " " " " " " " " " " "
" " " " " " " " " " " " " Five Tube Super Heterodyne ???   1919 CB 5     " " " "   " " " " " " " Yonkers
" " " " " " " " " " " " " Seven Tube Super Auto-Dyne   February 1920 CB 7     " " " " Resistance Coupled Resistance Coupled " " " " " " " New York City
" " " " " " " " " " " " " Seven Tube Super Auto-Dyne   Summer 1920 ?? CB 7     " " " " Resistance Coupled Resistance Coupled " " " " " " " " " " " "
" " " " " " " " " " " " " Super Heterodyne Using Audio Transformers   Summer 1920 ?? CB 8     " " " " Resistance Coupled Resistance Coupled " " " " " " " " " " " "
" " " " " " " " " " " " " Six Tube 2nd Harmonic Super Heterodyne   Fall 1921 ?? CB 6     " " " " 60 Air Air " " " " " " " " " " " "
" " " " " " " " " " " " " Five Tube 2nd Harmonic Reflexed Super Heterodyne   February 1923 CB 5     " " " " " " " " " " " " " " " " " " "
" " " " " " " " " " " " " Four Tube 2nd Harmonic Reflexed Super Heterodyne   February 1923 CB 4     " " " " " " " " " " " " " " " " " " "
" " " " " " " " " " " " " Six Tube 2nd Harmonic Reflexed Super Heterodyne   Spring / Fall 1923 CB 5 / 6     " " " " 60 Air Air " " " " " " " " " " " "
" " " " " " " " " " " " " Portable Six Tube Super Heterodyne   December 1923 CB 6     " " " " " " " " " " " " " " " " " " "
" " " " " " " " " " " " " Super-Regenerative-Heterodyne Combination   February 1924 CB 4     " " " " " " " " " " " " " " " "
" " " " " " " " " " " " " Eight Tube Transformer-Coupled Super Heterodyne   Summer 1924 CB 8     " " " " 60 ?? ?? ?? " " " " " " " " " " " "
Atlantic & Pacific Radio Co. Atlantic & Pacific Radio Co. Improved and Practical Super-Heterodyne PNF January 1924 M / K 8 (201A) NIF 2 (1) N NIF (Atlantic & Pacific Radio Co.) NIF PNF NIF NIF NIF Chief Engineer & Staff New York City
Atwater Kent (Atwater Kent Mfg. Co.) (Eight Tube Superheterodyne)   (1924) CB 8                                 (Philadelphia)
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
Baby Grand n / a Six-Tube Baby Grand Super-Heterodyne X January 1925 B 6 6 - 199 7 x 18 2 1 N TL [Haynes-Griffin] Square X (100) Iron n / a Paul Green       Chicago
" " " " n / a Improved Six-Tube Baby Grand Super-Heterodyne X March 1925 B 6 6 - 199 8 x 15.5 2 3 N TL (Silver Marshall) Misc X 30 Iron Specifically, Iron Paul Green Chicago
Baby Heterodyne n / a Single Tube Baby Heterodyne   February 1924 B 1         John B. Rathbun (San Francisco)
" " " " " " n / a Baby Heterodyne With Two Audios   May 1924 B 3         John B. Rathbun " " " " "
" " " " " " n / a Baby Heterodyne With RF and Audio Stages PNF June 1924 B 5 5 - 201A or 199 (7 x 18) 4 or 2 3 N W Not Used Not Used   NIF n / a n / a John B. Rathbun " " " " "
Baby Heterodyne II n / a Baby Heterodyne II   September 1924 B 1         John B. Rathbun " " " " "
Baby Super Four n / a Four Tube Baby Super   July 11, 1925 B 4 [+ 1] *   3         J. E. Anderson   " " " " "
Baby Super Six n / a Six Tube Baby Super   July 11, 1925 B 6 [[+ 1] *   3         J. E. Anderson   " " " " "
Badger Radio Badger Radio Super-Heterodyne Kits   December 1924 K             Milwaukee, Wis.
Baldwin Nathaniel Baldwin Headphone Co. Nine Tube Superheterodyne X 1924 M 9 NIF (7 x 24) 2 5 1 - V NIF (Baldwin) NIF PNF NIF NIF NIF NIF Salt Lake City
Baldwin-Pacific Baldwin-Pacific & Co. Pacific "S-H" Transformers # 5 & #10 X April 1924 K n / a n / a n / a n / a n / a n / a n / a Baldwin-Pacific Short Cylindrical X 45 (Iron) (Air) (Gerald M. Best ??) X San Francisco
" " " " " " " " " " " " Pacific Ranger "Pacific Quintet" Super-Het Kit X November 1924 K n / a n / a n / a n / a n / a n / a n / a Baldwin-Pacific Short Cylindrical X 45 (Iron) (Air) (Gerald M. Best ??) X " " " " "
" " " " " " " " " " " " Pacific Ranger "Pacific Quintet" Super-Het X November 1924 BK 8 8 - 199 6 x 26 to 30 2 3 1 - V TL Baldwin-Pacific Short Cylindrical X 45 (Iron) (Air) (Gerald M. Best ??) X " " " " "
" " " " " " " " " " " " Pacific Ranger Super-Het X Spring 1926 CK 8 7 - 199 & 1 - 201A (6 x 26) 2 3 n/a TL Baldwin-Pacific Short Cylindrical X 45 (Iron) (Air) (Gerald M. Best ??) X " " " " "
" " " " " " " " " " " " Pacific Rainbow Super Het   February 1926 K          
Baldwin-Pacific - Best n / a Best Modified Superheterodyne Shielded Model X (Fall 1925) BK 7 7 - 199 10 x 21 3 2 1 - V W Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
Baldwin Pacific - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Baldwin-Pacific Short Cylindrical X 45 NIF NIF Gerald M. Best X W. P. Brush, Designer San Francisco
Baldwin Pacific - Hall n / a Compact Super-Heterodyne   April 1925 BK 8   Baldwin-Pacific Short Cylindrical   45 NIF NIF D. J. Hall
Band-Isolator   Band-Isolator   June 1929 CB 5 7 x 24 S. Gordon Taylor New York City
Barawik Co. Barawik Co. High Grade Eight Super-Heterodyne   July 1924 P 8   Columbia ?? Chicago
Bongart n / a Four Tube Super-Heterodyne   July 1924 CK 4           B. J. Bongart       New York City
" " " " " Four Tube Super-Heterodyne   September 12, 1925 B 4                   " " " " "
Boone Boone Corporation, J. T. Super Heterodyne Transformer Kit X August 1924 K n / a n / a n / a n / a n / a n / a n / a Boone Cylindrical X 36 Air Air John T. Boone Detroit
" " " " " " " " " " Eight Tube Super Heterodyne X August 1924 B 9 7 - 201A (7 x 36) 2 8 1 -V & 1 - MA TL Boone Cylindrical X 36 Air Air John T. Boone " " "
" " " " " " " " " " Seven Tube Super Heterodyne X February 1926 B 7 199 7 x 18 2 2 N TL Boone Cylindrical X (36) Air Air John T. Boone " " "
Branston Branston, Chas. A. Branston Transformer Kit No.R-99 X March 1924 K n / a n / a n / a n / a n / a n / a n / a Branston Cylindrical X 57 (Iron) Air Buffalo, N. Y.
" " " " " " " " " Branston R-95 Super-Heterodyne Knockdown ^ PNF (March) 1924 ^ KD 7 7 - 199 (8 x 24) 2 4 (1 - V optional) L or W Branston Cylindrical X 57 (Iron) Air " " " "
" " " " " " " " " Branston R-99 Super-Heterodyne X March 1924 B 7 7 - 199 (8 x 24) 2 4 (1 - V optional) L or W Branston Cylindrical X 57 (Iron) Air " " " "
" " " " " " " " " Branston Transformer Kit No. R-199 X November 1924 K n / a 7 - 199 n / a n / a n / a n / a n / a Branston Misc X (57) Iron Air " " " "
" " " " " " " " " Branston R-199 Reflexed Super-Heterodyne X November 1924 B 7 7 - 199 or 201A 7 x 21 2 2 N L Branston Misc X (57) Iron Air " " " "
" " " " " " " " " Branston R-199 Non-Reflexed Super-Heterodyne PNF November 1924 B 7 7 - 199 or 201A 7 x 21 2 2 N L Branston Misc X (57) Iron Air " " " "
Branston - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Branston Cylindrical X 57 (Iron) Air Gerald M. Best X W. P. Brush, Designer San Francisco
Branston - Ultradyne n / a Branston R-99 Ultradyne X March 1924 B 7 7 - 201A 7 x 30 2 4 (1 - V optional) L or W Branston Cylindrical X 57 (Iron) Air " " " "
Braxton-King Mississippi Valley Radio Company Standard Air-core and Hi-Mu Coils ??   Fall 1925 P n / a n / a Mississippi Valley Radio Company   St. Louis
" " " " " " " " " " " " " " " " (Screen Grid Superheterodyne)   1927 K " " " " " "   " " "
" " " " " " " " " " " " " " " " Braxton-King Shielded, Plug-In IFs   December 1927 P n / a n / a " " " " " " Cylindrical   Air Air " " "
" " " " " " " " " " " " " " " " Braxton-King Shield Grid Eight   November 1928 K 8 " " " " " " " " "   " " "
" " " " " " " " " " " " " " " " Braxton-King Shield Grid Eight Conversion X March 1929 CB 8 Screen Grid (8 x 24) 2 - Drum 2 N   " " " " " " " " " X " " "
" " " " " " " " " " " " " " " " Screen Grid A. C. Superheterodyne   September 1929 K " " " " " " " " "   " " "
" " " " " " " " " " " " " " " " Braxton-King Model A   November 1929 K 9 " " " " " "   " " "
" " " " " " " " " " " " " " " " Braxton-King Model B Tuner Unit   November 1929 P 5 [Tuner] " " " " " "   " " "
Bremer Tully Bremer Tully Mfg. Co. B-T Oscillator Coupler X June 1924 P n / a n / a n / a n / a n / a n / a n / a Bremer Tulley n/a n / a n / a n / a n / a Chicago
" " " " " " " " " " " " B-T Super-Heterodyne Transformer Kit X July 1, 1924 P NIF NIF NIF NIF NIF NIF NIF Bremer Tulley NIF PNF NIF NIF NIF         " " "
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
Brunswick Brunswick Balke Collender Co. & Radio Corporation Of America Beaux Art Radio / Phono Combination ^^ PNF October 1924 ^^ M NIF NIF NIF NIF NIF NIF NIF NIF NIF PNF NIF NIF NIF         Chicago & Camden, N. J.
" " " " " " " " " " " " " " " " " Tudor Model 160 [Radiola / Phono Combination] ^^ X October 1924 ^^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Hudson Model BR-260 [Radio / Phono Combination] ^^ X October 1924 ^^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Empire Model 360 [Radio / Phono Combination] ^^ X October 1924 ^^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Model 60 [Radio / Phono Combination] ^ X 1925 ^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Model 460 [Radio / Phono Combination] ^   1925 ^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Panatrope Model PR-46-C [Radiola / Phono Combination] X 1926 ^ M 7 [+ 1] (199 & 171) Radiola 28 Seven Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 7 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Panatrope Model PR-148-C [Radiola / Phono Combination] X 1926 ^ M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Panatrope Model PR-148-C [Radiola / Phono Combination] X 1926 ^ M 7 [+ 1] (199 & 171) Radiola 28 Seven Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 7 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Cordova 8 - 2D [Dry Battery] [Radiola / Phono Combination] ^   November 1926 M 7 [+ 1] (199 & 171) Radiola 28 Seven Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 7 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Cordova 6 [Radiola / Phono Combination] ^   January 1927 M 6 6 - 199 Model 813 Six Tube Panel 2 2 1 - Optional Internal Loop R.C.A. 6 Tube Reflexed Catacomb X 60 Air n / a Edwin H. Armstrong & Harry Houck X " " " " " " " "
" " " " " " " " " " " " " " " " " Cordova 8 [Radiola / Phono Combination] ^ X January 1927 M 8 (199 & 171) Eight Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 8 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Model BR 18   January 1927 M 7 [+ 1] (199 & 171) Radiola 28 Seven Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 7 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Panatrope Model PR-138-C [Radiola / Phono Combination] X December 1927 M 7 [+ 1] (199 & 171) Radiola 28 Seven Tube Panel 2 - Drum 2 1 - Optional Internal Loop R.C.A. 7 Tube Catacomb X 60 Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Model 3NC8 [A-C] Highboy ^   October 1928 M 8 [+ 1 A-C] Y227, 171, 280 Walnut 1 - Drum 1 n / a Short Indoor R.C.A. Under Chassis Rectangle X 180 KC (Air) n / a " " " " " " " "
" " " " " " " " " " " " " " " " " Model 5NO [A-C] Table Model X October 1928 M 8 [+ 1 A-C] Y227, 171, 280 Walnut 1 - Drum 1 n / a Short Indoor R.C.A. Under Chassis Rectangle X 180 KC (Air) n / a " " " " " " " "
" " " " " " " " " " " " " " " " " Model 5WO [A-C] Table Model X M 8 [+ 1 A-C] Y227, 171, 280 Walnut 1 - Drum 1 n / a Short Indoor R.C.A. Under Chassis Rectangle X 180 KC (Air) n / a " " " " " " " "
" " " " " " " " " " " " " " " " " Model 5NC8 [A-C] Highboy X October 1928 M 8 [+ 1 A-C] Y227, 171, 280 Walnut 1 - Drum 1 n / a Short Indoor R.C.A. Under Chassis Rectangle X 180 KC (Air) n / a " " " " " " " "
" " " " " " " " " " " " " " " " " Model 148 [Radio / Phono Combination] ^   1928 ^ M 8 ^ (199, 171) (Eight Tube Panel) 2 - Drum 2 1 - Optional Internal Loop R.C.A. (8 Tube Catacomb) X (60) Air n / a Edwin H. Armstrong X " " " " " " " "
" " " " " " " " " " " " " " " " " Model 3NW8 [A-C] Highboy   January 1929 M 8 [+ 2 A-C] Y227, 250, 281 Walnut 1 - Drum 1 n / a Short Indoor R.C.A. Under Chassis Rectangle X 180 KC (Air) n / a " " " " " " " "
Bryant n / a Homebuilder's Seven - A Super Set X April 1929 B 7 201A, 171 for DC or 227, 222, 171 for AC 7 x 24 2 - Drum 1 N W Homemade Upright Coils X 214 Air n / a B. B. Bryant NIF
Brinkman n / a Three Level Super-Heterodyne   May 1924 B 12 Henry Brinkman Pelham, N. Y.
Brunn n / a A Choice Superheterodyne   January 1927 CB Brunsten Brunn
Brush n / a Six Tube Het-Duo-Gen   December 1924 CB C. E. Brush Chicago
BSM NIF BSM Super 8 X (1926) NIF 8 NIF NIF NIF NIF NIF   NIF NIF PNF NIF NIF NIF NIF
Buell Buell Manufacturing Company Flewelling Uniformer X May 1924 P n / a n / a n / a n / a n / a n / a n / a Buell Module X NIF (Air) (Air) Edmond T. Flewelling Chicago
Buell - Flewelling Eight " " " " " " " " " " Flewelling 8 X January 28,1928 B 8 201A, 171 (7 x 24) 2 2 N TL Buell Module X NIF (Air) (Air) Edmond T. Flewelling       Chicago
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
Camfield Camfield Radio Manufacturing Company Super Selective Nine X March 1927 CK 9 [5 ******] 201A, 200A, & 112 7 x 30 3 2 N S & L W Rusco No. 95 IFs & Rusco Band Pass Filter Vertical Tuna Can / Module X 95 Air Air         Chicago
" " " " " " " " " " " " " " " " Super Selective Ten   November 1927 CK 10 [6******]   3 2 N   Rusco No. 95 IFs & Rusco Band Pass Filter Vertical Tuna Can / Module   95 Air Air " " "
" " " " " " " " " " " " " " " " Super Selective Nine 'Revised'   January 1928 CK [9 [5 ******])   3 2 N S & L W Rusco No. 95 IFs & Rusco Band Pass Filter Vertical Tuna Can / Module 95 Air Air " " "
Carborundum Company Carborundum Company Carborundum Superheterodyne   January 1927 CB 8 [+ 1] * 3 Madison or Victoreen Suggested Tuna Can 150 Dr. M. L. Hartmann & John R. Meagher, developers*** Niagara Falls, N. Y.
CELCO Central Engineering Laboratories Celco Double "D" Coil IFs   August 1925 P n / a n / a n / a n / a n / a n / a n / a Central Engineering Laboratories Tuna Can X 66 ?? Air Air Chicago
Columbia Columbia Radio Corporation New Columbia IFs, Oscillator Coupler, and Audios X Fall 1924 K n / a n / a n / a n / a n / a n / a n / a Columbia Misc X 38 "Semi-iron" None Chicago
" " " " " " " " " " " " " Semi-Finished 8-Tube Super-Heterodyne X August 1925 CK 8 8 - 201A 7 x 30 2 3 N TL or W Columbia Misc X 38 "Semi-iron" None " " "
" " " " " " " " " " " " " Semi-Finished 8-Tube Super-Heterodyne Deluxe X August 1925 CK 8 8 - 201A 7 x 30 2 5 N TL Columbia Misc X 38 "Semi-iron" None " " "
" " " " " " " " " " " " " (Improved 9-Tube Super Deluxe)   1928 CK 9 201A & 112 or 171 or 250 7 x 30 2 1 N TL or W Columbia Misc X 38 "Semi-iron" None " " "
Columbia - Hamilton Carr " " " " " " " " " " Semi-Finished 8-Tube Super-Heterodyne X (Fall 1926) CK 9 9 - 201A 7 x 30 2 3 N TL or W Columbia Misc X 38 "Semi-iron" None " " "
" " " " " " " " " " " " " " " " " " Improved 9 Tube Super X September 1927 CK 9 201A & 112 or 171 or 250 7 x 30 2 1 N TL or W Columbia Misc X 38 "Semi-iron" None " " "
Columbia - Randolph " " " " " " " " " " Semi-Finished 8-Tube Super-Heterodyne X October 1924 CK 8 8 - 201A or 199 7 x 30 2 5 N TL Columbia Misc X 38 "Semi-iron" None " " "
" " " " " " " " " " " " " " " " " Super-Heterodyne   December 1924 CK 8 Columbia Misc X 38 "Semi-iron" None " " "
" " " " " " " " " " " " " " " " " Semi-Finished 8-Tube Super-Heterodyne Deluxe X August 1925 CK 8 8 - 201A 7 x 30 2 5 N TL Columbia Misc X 38 "Semi-iron" None " " "
Columbia - Ultradyne Columbia Radio Corporationm Ultradyne L-1 Super-Het X Fall 1925 CK 8 8 - 201A 7 x 30 2 5 N Columbia Misc X 38 "Semi-iron" None " " "
Como Como Apparatus Corporation Six-Tube Super-Heterodyne X June 1924 CK 6 6 - 199 or 201A Breadboarded No panel 2 2 N NIF Como / General Radio Misc / Module X 30 Iron Air Boston / Manchester, NH
" " " " " " " " " " " " " Nine-Tube Super-Heterodyne   June 1924 CK 9 6 - 199 or 201A Breadboarded No panel 2 (2) N NIF Como / General Radio Misc / Module X 30 Iron Air " " " " " "
Consomello Mazda Radio Manufacturing Co. Consomello   Fall 1925 M 8 8 - 201A (7 x 24) 2 2 (1 -V) W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James Cleveland
" " " " " " " " " " " " " " " Grand   Fall 1925 M 8           " " "
" " " " " " " " " " " " " " " (Portable ^)   1926 ^ M               " " "
" " " " " " " " " " " " " " " Special   Summer 1926 M               " " "
" " " " " " " " " " " " " " " (Consomello ^)   1926 ^ M 8 ^ 8 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
" " " " " " " " " " " " " " " (Deluxe ^)   1926 ^ M 8 ^ 8 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
" " " " " " " " " " " " " " " (Grand ^)   1926 ^ M 10 ^ 10 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
" " " " " " " " " " " " " " " (Portable ^)   1926 ^ M               " " "
" " " " " " " " " " " " " " " (Premier ^)   1926 ^ M 8 ^ 8 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
" " " " " " " " " " " " " " " (Royal ^)   1926 ^ M 8 ^ 8 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
" " " " " " " " " " " " " " " (Special ^)   1926 ^ M 10 ^ 10 - 201A (7 x 24) 2 2 NIF W St. James Tall Red Top Vacuum Tube X 240 Air in Vacuum Air in Vacuum Robert T. St. James " " "
Consrad Consrad Company Genuine Standard Super-Heterodyne   November 1924 BP (8) (201A) (8 x 40) 2 5 1 -V & 1 - MA L NIF NIF NIF NIF NIF NIF F. F. Webb New York City
" " " " " " " " " Consrad Strobodyne   January 1928 BP 8   11 x 27         (Radio Electric Laboratory)     120 ??     Lucien Chretien [translated by R. E. Lacault]       " " " " "
Daven Super Amplifier Daven Radio Corporation Daven R-3 Super Amplifier X July 1925 P 3 201A n / a n / a n / a n / a n / a Daven Module / Separate Parts X n / a Resistance Coupled n / a Newark, NJ
Daven Resistance Coupled - Popular Mechanics n / a Popular Mechanics 1927 Resistance Coupled Eight X October 1926 CB 8 5 - Daven MU-20 & 3 - 201A 7 x 30 2 2 1 - V [Double Range] TL Daven 3-Stage Super Amp Module / Misc X 45 n / a Air New York City
Dean - Receptrad Charles A. Dean Eight Tube Superheterodyne [SH8-1] X (1924) CB 8 8 - 201A 7 x 40 2 6 N L Radio Receptor Cylindrical X 100 "Comunited Iron" Air Lieut. Victor Greiff Charles A. Dean New York City
DeLand DeLand Radio Manufacturing Company Famous One Spot R. F. Transformer X November 1927 P n / a n / a n / a n / a n / a n / a n / a DeLand Standing Rectangle X NIF (Air) NIF Milwaukee, Wis.
Domino Domino Radio Service Super- Heterodyne Kits   May 1924 K               New York City
Du Bois William L. Du Bois 8-Tube Super-Heterodyne   November 1924 CK 8 NIF NIF NIF NIF NIF NIF NIF NIF PNF NIF NIF NIF NIF Philadelphia
" " " " " " " " " Monarch 4-Tube Super-Het   February 1925 (CB) 4 NIF NIF NIF NIF NIF L NIF NIF PNF NIF NIF NIF NIF " " " "
Duplex Duplex Engine Governor Co., Inc. RK Supplimentary Kit X September 1924 CK Brooklyn, N. Y.
" " " " " " " " " " " " " Super-Het   January 1925 K Duplex Engineering " " " " "
DX Seven n / a DX Seven Super Heterodyne     CB     (7 x 21) 2 2 1 -V & 1 - MA                        
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
Eastern Coil Eastern Coil Corporation Eastern Pickle Bottle Coupler Model FC X January 1925 P n / a n / a n / a n / a n / a n / a n / a n / a Eight-sided Tuning Coil X n / a n / a A. O' Connor New York City
Eclipse NIF Eclipse Superheterodyne   March 1927 CB
Eight-In-Line Boulderadio Eight-In-Line X September 1927 K 8 8 - 201A 7 x 24 2 2 N TL Eight-In-Line Wooden Module X 85 Air Air Boulder, CO
" " " " " " " " Six Tube Unit of the Eight-In-Line X November 1927 K 6 6 - 201A 7 x 24 2 2 N TL Eight-In-Line Wooden Module X 85 Air Air " " " "
E. I. S. / Leutz Experimenter's Information Service, Inc. Armstrong Super-Heterodyne   July 1922 M 8 ??   4 R-C 99 ? Resistance Coupled Resistance Coupled Charles R. Leutz Long Island, NY
" " " " " " " " " " " " " " " " " (Model L Resistance Coupled]   1922 M / K 10     R-C / L-C 99 Resistance or Inductance Coupled Resistance or Inductance Coupled " " " " " " " " "
" " " " " " " " " " " " " " " " " Model L [Transformer Coupled]   October 1922 M / K 8     RCA UV-1714 Misc 30 Iron ?? " " " " " " " " "
" " " " " " " " " " " " " " " " " Model L [Transformer Coupled]   October 1922 M / K 10     RCA UV-1714 Misc 30 Iron ?? " " " " " " " " "
" " " " " " " " " " " " " " " " " Model C   April 1923 M / K 8 2 or 3 RCA UV-1716 / General Radio / Acme Open Frame / E. I. S. Misc or Tuna Can 43 / 50 / 47 Iron or Air Iron or Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Model C-7 Standard   September 1924 K 7 E. I. S. Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Model C-7 Improved   October 1924 K 7 " " " Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Model C-7 Deluxe   (Note 20) K 7 " " " Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Model C-7 Special   K 7 " " " Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " (C-3 Custom Super-Heterodyne)   (1925) K 7 " " " Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Navy Model C-10 Super-Heterodyne   February 1925 K 10 " " " Tuna Can 47 Air Air " " " " " " " " "
" " " " " " " " " " " " " " " " " Universal Transoceanic Type L- 6   September 1926 M / K " " " " " " " " "
E. I. S. - Colburn n / a Colburn Superheterodyne     CB    
Electrical Research ^ Electrical Research and Mfg. Co. ^ Super Heterodyne ^   1924 ^ CB
Ellis n / a "Using What Junk You Have In Making a Super-Heterodyne"   December 1923 CB 6 " " " " " " " " "
" " Ellis Electrical Laboratory Ellis D Coil   November 1927 P Chicago
Ensall Ensall Radio Laboratory Model 780 Super Heterodyne   September 1929 K 7 Warren, Ohio
ERLA Electrical Research Laboratories Town and Country ^ Model S14   1925 ^ CB 6 ERLA Misc Chicago
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
Feldstern-McCusker Radio American Radio Stores, Inc. Five Tube Baby Super-Het   November 1924 BK 5                                 Philadelphia
Flewelling Frequency Changer n/a Flewelling Frequency Changer   September 1925 B 2 2 - 201A (7 x 10) 2 1 N L n / a n / a   n / a n / a n / a Edmond T. Flewelling Chicago
Flewelling 8 (Flewelling Radio Company) Flewelling 8 X January 28, 1928 BK 8 7 - 201A & 1 - 171A (7 x 24) 2 2 N TL Flewelling NIF   NIF NIF NIF Edmond T. Flewelling Chicago
Fournier n / a Fournier Four Filter Eight Tube Super-Heterodyne   March 1925 CB 8 3   60 Jacques Fournier Chicago
Framingham Framingham Company, The Framingham K. D. Super Heterodyne PNF (1924) K 8 Framingham Tall Cylindrical 50 Air Air Farmington, Mass.
Frank Everlast Radio Products Co. Frank Super-Kit X November 1, 1924 K 8 Frank Cylindrical New York City
Foltz Foltz Radio Company New Five Tube Wonder Circuit   August 1923 CB 5 New Castle, Penna.
Foy n / a Seven Tube Super-Heterodyne On Wheels   August 1924 B 7 (Unknown) "Barney" Foy Washington, D. C.
Frederick Tustin Radio Frederick Super-Heterodyne PNF May 4, 1924 K & P NIF NIF NIF NIF NIF NIF NIF (Frederick) NIF NIF NIF NIF NIF (Frederick)       San Francisco
G. A. Sales, The G. A. Sales, The Super Heterodyne   May 1924 CB                                   St. Paul, Minn.
General, The General Radio Repair Co. "The General" Super-Heterodyne   January 1925 CK 7 7 - 199 (7 x 28) 2 2 N Silver Marshall Aluminum Square X 60 Steel McMurdo Silver X Chicago
" " " " " " " " " " " " " Medium Frequency Transformer - Type 271 X July 1924 P n / a n / a General Radio Misc X 33 Iron Air " " " " " "
" " " " " " " " " " " " " 30 Kilocycle Superheterodyne [1st Model]   Fall 1925 CB 7 General Radio Misc X 33 Iron Air " " " " " "
" " " " " " " " " " " " " 30 Kilocycle Superheterodyne [2nd Model]   Fall 1925 CB 7 General Radio Misc X 33 Iron Air " " " " " "
General Radio General Radio Company Six Tube Super Heterodyne April 1924 BK 6 General Radio Misc X 33 Iron Air Cambridge, Mass.
General Radio - Anderson n / a DX Super-Heterodyne   November 1925 BK 8 * General Radio Misc X 33 Iron Air J. E. Anderson
General Radio - Bernard n / a Bernard Portable X April 3, 1926 BK 8 199. 201A 7 x 18 General Radio Misc X 33 Iron Air Herman Bernard
General Radio - Best n / a Best Modified Superheterodyne Shielded Model X (Fall 1925) BK 7 7 - 199 10 x 21 3 2 1 - V W Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
General Radio - Brunn n / a Five Tube Super-Heterodyne   00. BK 5 [+ audio] General Radio Misc X 33 Iron Air Brunsten Brunn
General Radio - Fenway Everyman's n / a Fenway Everyman's Receiver X February 1926 BK 9 [4 ******] 9 - 201A 8 X 28 3 2 1 -V & 1 - MA W General Radio Misc X 33 Iron Air Leo Fenway New York City
General Radio - Funkerburk Funderburk Engineering Corp. Superheterodyne Receiver   (1925) CB 7 General Radio Misc X 33 Iron Air Boston
General Radio - Hollingshead n / a Super-Heterodyne De Luxe X March 1926 BK 8 7 - 199 & 1 - 120 7 x 18 2 2 Y General Radio Misc X 33 Iron Air Paul Hollingshead J. E. Anderson
General Radio - QST   X August 1924 BK  
General Radio - St. Louis Daily Globe St. Louis Daily Globe-Democrat St. Louis Daily Globe-Democrat Superheterodyne X Summer 1926 BK 6 6 - 199 7 x 21 2 3 N W General Radio Misc X 33 Iron Air St. Louis Daily Globe-Democrat Staff St. Louis
Gilbert - Remler Gilbert Gilbert Superheterodyne Model Z5 X (1925) CB 8 8 - 199 Remler Cylindrical 45 Iron Gerald. M. Best
Goldsmith n / a Short-Wave Code Signals Super-Heterodyne   May 1928 CB 5 [+ 1] 4 (Unknown) 50 Lloyd T. Goldsmith
Globe Globe Radio Equipment Company Super-Heterodyne Kit "Original Globe Coils"   August 1924 K Globe Radio Equipment New York City
Godley n / a Godley Super-Heterodyne   December 1921 CB Paul F. Godley X
" " n / a Paragon Super-Heterodyne   February 1923 CB 9 " " " " " X
Graybar ^ Graybar Electric Company ^ Model 330 [A-C] ^ 1929 ^ M 9 RCA ????
" " " " " " " " " " " " Model 330 [A-C] Console 1929 M 9 " " ????
" " " " " " " " " " " " Model 340 [A-C] ^   1929 ^ M 9             " "                   ????
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
Haddaway Haddaway Incorporated Haddaway Resistance Coupling Unit X January 1925 P n / a     n / a       Haddaway Flat Sqaure     Resistance           Los Angeles
Halldorson Halldorson Company, The Halldorson Shield Grid Super 8 [DC]   Fall 1928 BK 8 Halldorson Chicago
" " " " " " " " " " " " " Halldorson Shield Grid Super 8 [AC]   Fall 1928 BK 8 " " " " " " "
Halowat (possibly) Hallock and Watson Halowat Superhet (possibly)   (1924) (M) 8 Remler Cylindrical 45 Iron Gerald M. Best Portland, OR
Hanscom Hanscom Radio Devices Superunit   November 1924 K 4 [+ 2] 9 x 18 Hanscom Misc Module Allan T. Hanscom Woonsocket, R. I.
" " " " " " " " " " " Hanscom Four-Tube Super Set   Spring 1926 K 4 7 x 10 " " " " " " " " " " " " " " "
" " " " " " " " " " " Hanscom Six-Tube Super Set X Spring 1926 K 6 6 - 201A 7 x 18 1 or 2 4 ? 1 - V   " " " " Exposed diamond-weave & large cylinder X   Air Air " " " " " ? " " " " " "
" " " " " " " " " " " Hanscom Superunit Auto Set   Spring 1926 K 4 " " " " " " " " " " " " " " "
Hardy & Sons Hardy & Sons, L. H. Toroidal Transformer ["Toro-Tran"]   February 1924 P n / a n / a Hardy 90 New York City
Haynes Haynes-Griffin Radio Service, Inc. Haynes Multi-Unit Super-Heterodyne   September 1923 BK 7   McMurdo Silver-Wound Vertical Tuna Can 99 Air Air A. J. Haynes / McMurdo Silver New York City
Haynes Griffin Haynes-Griffin Radio Service, Inc. Simplified Super-Heterodyne   January 1924 K 7 TL Haynes-Griffin Tall Square 100 Air Air A. J. Haynes New York City
" " " " " " " " " " " " " " " "New and Improved Radio Apparatus"   February 1924 K n / a n / a n / a n / a n / a n / a n / a Haynes-Griffin Tall Square 100 Air Air " " " " " " " " " "
" " " " " " " " " " " " " " " Laboratory Matched Transformers   April 1924 K n / a n / a n / a n / a n / a n / a n / a Haynes-Griffin Conical 150 Air Air " " " " " " " " " "
" " " " " " " " " " " " " " " De Luxe Super-Heterodyne - Model B   February 1925 BK 9 [6] 199 & [3] 201A 7 x 18 3 Haynes-Griffin Conical 150 Air Air " " " " " " " " " "
" " " " " " " " " " " " " " " De Luxe Super-Heterodyne - Model A   May 1925 BK 9 201A 7 x 18 3 Haynes-Griffin Conical 150 Air Air " " " " " " " " " "
" " " " " " " " " " " " " " " Super-Heterodyne Portable   August 1925 BK 8 Haynes-Griffin Conical 150 Air Air " " " " " " " " " "
Haynes Griffin - Cockaday n / a Superheterodyne Reflex X January 1925 BK 8 Haynes Griffin Cone 150 Air Air Lawrence M. Cockaday X New York City
(Heteroplex) Elvin Radio Co. (Deluxe Heteroplex)   March 1926 BK
Hetrola Hetrola Radio Co. Ltd. R-199-P [Portable]   August 1925 BK 7
HFL High Frequency Laboratories H. F. L. Transformers   April 1926 P n / a n / a n / a n / a n / a n / a HFL Flat Rectangle X 37 Iron Air Ernst Tyrman Chicago
" " " " " " " " " " Nine-in-Line Super   September 1926 BK 9 HFL Flat Rectangle X 37 Iron Air Ernst Tyrman " " "
" " " " " " " " " " N27 Nine-in-Line   March 1927 BK 9 HFL Flat Rectangle X 37 Iron Air (Ernst Tyrman) " " "
" " " " " " " " " " N28 Nine-in-Line   September 1927 BK 9 HFL Flat Rectangle X 37 Iron Air Ernst Tyrman " " "
" " " " " " " " " " Improved Nine-In-Line ???   September 1927 BK 9     HFL Flat Rectangle X 37 Iron Air Ernst Tyrman       " " "
" " " " " " " " " " N28 Nine-in-Line [AC or DC]   January 1928 BK 9 HFL Flat Rectangle X 37 Iron Air   " " "
" " " " " " " " " " HFL Model 10 Screen Grid Isotone - Custom Built   June 1, 1928 CB 10 HFL Flat Rectangle 450   " " "
" " " " " " " " " " Special Nine with the New 250 Power Amplifier   February 1929 CB 9 HFL Flat Rectangle 37 Iron Air " " "
" " " " " " " " " " Mastertone Laboratory-Made Receiver (A-C)   September 1929 M 11 HFL   Impedance " " "
HFL - Citizens Radio Call Book n / a Citizen's Super 8 Using HFL Isotone IF Amp   November 1928 BK 8 HFL Flat Rectangle 37 Iron Air New York City
Hilco A. E. Hill Mfg. Co. Super Hilco-Dyne Kit X August 1924 K 7 7 - 201A or 199 7 x 28 2 3 N W A. E. Hill Mfg. Co. Tuna Can X 40 Air Air Atlanta
" " " " " " " " Hilco Oscillator & Oscillator Coupler   Spring 1926 P n / a n / a n / a n / a n / a n / a " " " " " " Tuna Can X n / a n / a n / a " " "
" " " " " " " " Replacement Hilco IF Transformers   Spring 1926 P n / a n / a n / a n / a n / a n / a " " " " " " Tuna Can X 40 Air Air " " "
" " Super Hilco-Dyne Nine   November 1927 BK 9 " " " " " " Tuna Can X 40 Air Air " " "
" " Algonquin Electric Company, Inc. Super Hilcodyne Nine   December 1927 CB 9         Impedance & Iron   Fred A. Jewel       New York City
Hollister Lincoln Radio Corporation Hollister AC 8 Super X February 1929 CK 8 4 - 222, 3 - 201A, & 1 - 171A 8 x 28 2 - Drum 2 N W Lincoln Tunable Tall Rectangular X Variable 350 to 550 Air Air William H. Hollister " " "
Holmes Holmes Electric Manufacturing Co. Holmes Air-Core RF Transformers ??   June 1927 P n / a n / a Chicago
Holtzmark Wm. Holtzmark Super - Hetrodyne Model H.V.3 X [1926] BK 9 9 - 201A (7 x 28) 2 7 N (TL) Victoreen Tuna Can X 88 Air Air Charles J. Victoreen Wm. Holtzmark X St. Louis
Hopkins Portable Super-Het   August 1925 BK 8 Russel H. Hopkins
House of Coils, The Unique Coil Co. Type F - Super Heterodyne Oscillatior Coil   December 1924 P n / a New York City
Humphries NIF Eight Tube Super-Heterodyne Receiver   October 1924 BK 8                         LeRoy E. Humphries       Atlanta
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
Impedance Coupled - CRCB NIF Impedance Coupled Super-Heterodyne   (September 1927) CB
Imperial - Vistoreen NIF The Imperial Eight X (1925 or 1926) CB 8 8 - 201A 7 x 26 2 2 N TL or W Victoreen Vertical Tuna Can X 88 Air Air Charles J. Victoreen ???
Imperial Imperial Radio Corp. Imperial   September 1926 BK Chicago
Infradyne DX - Remler Radio Constructors Corp. Model DX 1928 Infradyne X July 1927 CK 10 [5 *****] 5-201A, 4-199, 1-112 or 171 Copper Embossed Cabinet 11 x 26 2 - Drum 3 1 - V W Remler Module X 3490 Air Air E. M. Sargent & L. C. Rayment Oakland, CA
" " " " " " " " " " " " " " " Remler Units (1928 Infradyne)   November 1927 CK " " " " " " X " " " " " " " " " " " " " "
" " " " " " " " " " " " " " " 1928 Infradyne   November 1927 CK       " " " " " " X " " " " " "       " " " " " " " "
" " " " " " " " " " " " " " " New 1929 Infradyne   Late 1928 CK 10 [5 *****]     Remler Module " " " X 3490 " " " " " " " " " " " "
IRCO Independent Radio Corp. IRCO Type BK IF Transformers   March 1927 P 9 ??             IRCO       Air Air         Philadelphia
Jaynxon Jaynxon Radio Laboratory Jaynxon Super-Heterodyne   July 1924 CB 8                                 New York City
Jefferson Jefferson (Long Wave) IF Transformers   August 1925 P n / a n / a Jefferson Rectangle   30   Chicago
Jefferson - Best n / a Best Modified Superheterodyne Shielded Model X (Fall 1925) BK 7 7 - 199 10 x 21 3 2 1 - V W Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
Jefferson - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Jefferson Rectangle 30   Gerald M. Best X W. P. Brush, Designer San Francisco
Jefferson - Radio Owners Service n / a Jefferson Superhet Eight PNF October 1925 CK 8 8 - 199 7 x 20 2 2 1 - V TL Jefferson Rectangle 30   " " "
Jellicoe n / a Five Tube Super Receiver PNF April 17, 1926 BK 5 ** (201A) 7 x 20 2 NIF NIF PNF NIF NIF NIF Jasper Jellicoe
Jones NIF Versatile Superheterodyne   December 1926 CB 7 Leslie Raymond Jones, developer?
Johnson NIF Eight Tube Super   May 1924 BK 8             (Homemade)           Leo Johnson        
Kardon Kardon Products Inc. Kompentrol - The Super Heterodyne   1924 M 8 Kardon Peter Kardon New York City
Kellogg Kellogg Switchboard and Supply Kellogg Superheterodyne Transformers X 1924 K n / a n / a Kellogg Rectangle X 45 Iron Air Chicago
Kleinfeld M. H. Kleinfeld & Co. 8-Tube Super-Heterodyne PNF May 1924 M 8 M. H. Kleinfeld New York City
Klentz Klentz Radio Company Klentz Super-Heterodyne Kit X May 1924 K / BP n / a n / a n / a n / a n / a n / a n / a Klentz Tall Rectangle X 95 Air Air Chicago
" " " " " " " " " Klentz Super-Heterodyne X Fall 1924 BP 7 7 - 201A 7 x 30 2 3 N L Klentz Tall Rectangle X 95 Air Air " " "
" " " " " " " " " Klentz Super-Heterodyne   Fall 1925 BP       Klentz Tall Misshapen Rectangle X 95 Air Air " " "
Klentz - Citizens Radio Call Book " " " " " " " 100 K. C. Super-Heterodyne   March 1927 BK 8 8 - 201A 7 x 26 2 3 1 - V L Klentz Tall Misshapen Rectangle X 95 Air Air " " "
" " " " " " " " " " " n / a 100 K. C. Super   September 1927 BK               (Klentz)     100 Air Air         New York City
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
Lacault R. E. Lacault, Inc. R. E. 29 All-Wave X April 1929 BK 6 + 2 + 2 3 - 201A, 3 - 222, 2 - 210, & 2 - 281 7 x 24 2 N N W Lacault Small Horizontal Coils X 120 Air Air Robert E. Lacault X     New York City
Lacault / de Willy n / a Super-Heterodyne with Homebuilt IFs or RCA 1716 IFs X December 1923 CB 10 10 - 201A (24 x 18) 2 7 N W R. C. A. [General Electric] Misc X 60 Iron n / a R. E. Lacault & F. de Willy X New York City
Lake Radio Service Lake Radio Service HI-AMP Super Heterodyne Kit   October 1924 K n / a Chicago
Lakeside Supply Lakeside Supply Company Microdyne Model 550-EM   March 1925 M 7 7 - 201A 7 x 18 2 2 N L Apex Short Cylindrical X NIF Air Air (E. K. Oxner) Chicago
Langbein & Kaufman Langbein & Kaufman Superheterodyne Oscillator Coil X Fall 1924 P n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a NIF n / a n / a New Haven, Conn.
Langhorne Langhorne Radio Company Langhorne Super Heterodyne X 1927 or 1928 CB 8 8 - 201A (7 x 36) 3 5 N (L or W) Langhorne Thick Vertical Tuna Can X NF (Air) Air Thomas J. Langhorne Portland, OR
La Peer La Peer Electrical Mfg. Co. La Peer "D" Coil Essential Kit X November 1927 K n / a n / a Le Peer Vertical Tuna Can X NF Air Air Chicago
" " " " " " " " " " " " La Peer AR-9 Super X November 1927 CK 9 " " " " " " " " X " " " " " "
Lavoy - Remler Lavoy Lavoy Novodyne X (1925) CB 8 6 - 199 & 2- 201A 7 x 28 2 3 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X Lavoy (California)
Leroy Radio Shop, The Leroy Super Heterodyne ^   1924 CB 8 Sunnyvale, Ca.
Levy 60 K. C. Peanut Super Using Western Electric "N" Tubes   February 1926 CB 7 Morris Levy
Liberty Liberty Mail Order House Reflexed Super-Heterodyne Kit [Hanscom]   January 1925 CK 6 Allan T. Hanscom New York City
Liberty Electric Liberty Electric Corporation Super-Heterodyne Kit No. R-40   July 1924 K Liberty Electric Tall Cylindrical 57 Air Air Stamford, Conn.
Liberty Transformer Liberty Transformer Co., Inc. Liberty Special Air Core Radio Frequency Transformer   November 1924 P n / a Liberty Transformer Air Air Chicago
Lincoln Lincoln Radio Corporation Long 45 Tuner / Kit   January 1925 K Chicago
" " " " " " " " Lincoln Oscillascope Oscillator Coupler   November 1924 P n/a " " "
" " " " " " " " Lincoln Superheterodyne   December 1926 CB 8 Silver Marshall Tuna Can Air Air " " "
" " " " " " " " Lincoln 8-80 One-Spot Super X November 1928 CK 8 4 - 222, 3 - 201A, & 1 - 171A (7 x 22) 2 - Drum 2 N W Lincoln Tunable Tall Rectangular X Variable 350 to 550 Air Air William H. Hollister " " "
" " " " " " " " Lincoln 8-40 Super   September 1929 CB 8 Lincoln 475 Impedance " " "
Lincoln Quality Lincoln Quality Products Company Lincoln Quality Approved Products Superheterodyne X 1926 BK 8   2 3 N   Lincoln Quality Small Bakelite Tuna Can X   Air Air Cleveland
Lincoln Quality Rex Laboratories, Inc. Lincoln Quality "Standard of Comparison" Receiver X September 1927 n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a Cleveland
" " " " " " " " " " " " Lincoln Quality "Standard of Comparison" Super Nine X November 1927 BK 9 7 - 201A, 1 - 112, & 1 - 171 7 X 26 2 2 N TL Lincoln Quality Small Bakelite Tuna Can X   Air Air " " "
Lincoln Lincoln Radio REX?? Best Lincoln Nine   September 1927 K 9 7 x 24 Lincoln Gerald M. Best X Cleveland
Locke Locke Radio Shop Sockets & Low-Loss Coils   November 1924 K 7 Victor, N. Y.
Long - Remler Long Radio Works Model S - 8 X (Likely 1925) CB 8 8 - 199 7 x 24 2 3 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X Les or George Long Cornelius, Oregon
Lynch   Super-Het   April 1924 CB (8)                         Arthur H. Lynch        
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
M. A. R. S. Manual Arts Radio & Electric Shop Six-Tube Super-Heterodyne   Mar-24 K 6                                 Los Angeles
M & H Moskowitz & Herbach M. & H. 8-Tube Super-Heterodyne X June 1924 CB / K 8 UV201A or DV-2 or UV199 7 x (26) 2 3 N KL Moskowitz & Herbach Short Cylindrical X 50 (Iron) Air Philadelphia
Madison Madison Radio Corporation Ultradyne Model L-2   June 1926 n / a Madison Tuna Can R. E. Lacault X " " " " "
" " " " " " " " " " " " " Madison Multi-Chokes   January 1927 P n / a Madison New York City
" " " " " " " " " " " " " Madison Ultraformers For Strobodyn   September 1927 P n / a Madison R. E. Lacault X " " " " "
Madison - Lacault Ultradyne LR-4 Radio Electric Laboratories / Madison Radio Corporation Shielded Ultradyne LR-4 Siper-Radio X November 1926 CK 9 9 - UX201A 8 x 24 2 1 N L Madison Multi-Choke Tuna Can X n / a n / a n / a R. E. Lacault, A.M., IRE X " " " " "
(Madison Ultradyne Six) ^ Allen-Rogers-Madison ^ (Ultradyne Six) ^   1928 CK 6 (Madison) New York City
Madison Moore Madison Moore Radio Corp. Madison Moore IFs   August 1925 K n / a n / a n / a n / a n / a n / a n / a Madison Moore Big Tuna Can 35 Air Air Harry Madison Denver
" " " " " " " " " " " " " " " Superheterodyne (201As) X February 19, 1926 BK 8 8 - 201A 7 x 28 2 3 1 -V & 1 - MA L Madison Moore Big Tuna Can X 35 Air Air Harry Madison " "
" " " " " " " " " " " " " " " Superheterodyne (201As) X September 1926 BK 8 8 - 201A 7 x 28 2 3 1 -V & 1 - MA L Madison Moore Big Tuna Can X 92.5 Air Air Harry Madison " "
" " " " " " " " " " " " " " " Superheterodyne (199s) X September 1926 CK 8 8 - 199 7 x 24 2 2 1 - V L Madison Moore Big Tuna Can X 92.5 Air Air Harry Madison " "
" " " " " " " " " " " " " " " New One-Spot   January 1927 BK 8 Madison Moore Big Tuna Can 490 Air Air Harry Madison " "
" " " " " " " " " " " " " " " "One Spot" & "One Spot Batt'ry-less"   March 1927 BK Madison Moore Big Tuna Can 490 Air Air Harry Madison " "
" " " " " " " " " " " " " " " AC International One Spot X September 1927 BK 9 + 3 2 - 199, 6 - 226, 1 - 227, 1 - 280, 1 - 171, & 1 - 874 7 X 28 2 - Drum 2 N TL Madison Moore Arched Aluminum X 490 Air Air Harry Madison " "
Madison Moore Calcatera Shielded Hyboy Superheterodyne   March 1927 CB 8 Madison Moore Tuna Can Air ?? Air ?? Joseph Calcaterra New York City
Magnaformer Radiart Laboratories Co. (Magnaformer 9-8 [D-C] ^)   1926 ^ BK 8 or 9 Magnaformer Tuna Can 69.73 Air Air Chicago
" " " " " " " " " " " " Magnaformer 9-8 All Electric [A-C]   (Spring 1927} BK 8 or 9 Magnaformer Tuna Can 69.73 Air Air " " "
" " " " " " " " " " " " Magnaformer 9-8 Model A-8 [D-C] "Commander-In-Chief Of The Air" X September 1927 BK 8 or 9 201A, 112, & 171 7 x 26 2 Drum 2 N Magnaformer Tuna Can 69.73 Air Air (J. M. Douglas) " " "
" " " " " " " " " " " " Magnaformer 9-8 Model A-8 [A-C] "Commander-In-Chief Of The Air"   November 1927 BK 8 or 9 Magnaformer Tuna Can 69.73 Air Air " " "
" " " " " " " " " " " " Magnaformer AC-29   January 1929 K 10 AC222, 227, 281, & 250 7 x 24 Magnaformer Tuna Can " " "
Magnaformer - Sutton n / a Flexible Nine-Tube Superheterodyne   February 1929 BK 9 Magnaformer Tuna Can 69.73 Air Air Coleman Sutton
Marathon - Ultradyne Marathon Radio Marathon Ultradyne L-1 X April 1924 K n / a n / a n / a n / a n / a n / a n / a Marathon Tuna Can X 30 Air Air N. E. Borch San Francisco
Master Master Radio Supply Company Master Intermediate Frequency Module   January 31, 1925 K / P n / a n / a n / a n / a n / a n / a Master Radio Supply Co Rectangular Module   60 Air Air Chicago
" " Master Radio Supply Company Master Super-Heterodyne   January 31, 1925 BK 8 8 - 201A (7 x 30) 2 4 N Master Radio Supply Co Rectangular Module   60 Air Air Chicago
Maxum Maxum Electric Company Maxum Long Wave Transformer   Fall 1924 P Maxum Philadelphia
Mayo Superheterodyne   July 1923 CB 10 R. R. Mayo
McCullah Efficient Super-Heterodyne April 1924 BK 10 10 - 201A (7 x 30) 2 (4) N W n / a Duo-Lateral Coils     Air Air Arthur B. McCullah
" " " Efficient Super-Heterodyne Improved PNF June 1924 BK 9 [or 10] 9 [or 10] - 201A (7 x 30) 2 (4) N W n / a Duo-Lateral Coils & Variable Caps     Air Air Arthur B. McCullah
" " " Sure Shot Super-Het February 1925 BK 9 9 - 199 & 201A (7 X 30) 2   n / a Duo-Lateral Coils & Variable Caps   Air Air Arthur B. McCullah
McDonald W. E. Fuetterer S. & S. Co. McDonald Superheterodyne X (1924) (M) 8 8 - 201A 8 x 36 2 7 N NIF McDonald Tall Cylindrical X 30 NIF NIF George W. Van Sickle St. Louis
McGown Radio Laboratory Best's 115 K. C. Super Parts   February 1928 K " " " " "
Melo-Heald Robertson-Davis Co., Inc. Melo-Heald Eleven X November 1926 BK 11 10 - 201A & 1 - 112 7 x 28 2 4 1 -V & 1 - MA TL Melo-Heald Cylindrical X 125 Air Air Merwyn Heald Chicago
" " " " " " " " " " " " Melo Heald Hot Spot Fourteen X September 1927 BK 14 8 - 199, 5 - 201A, & 1 - 171 7 x 30 2 4 1 -V & 1 - MA TL Melo-Heald Cylindrical X 125 Air Air Merwyn Heald " " "
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
Mercury H. M. Kipp Co.Limited Standard Ten X (1926) CK 10 10 - Northern Electric R215A "Peanut" (6.75 x 18) 2 2 N L Mercury (Wooden Module) X NIF (Air) (Air) Lowry       Toronto, Canada
" " " H. M. Kipp Co.Limited Scout X (1926) CK 10 10 - Northern Electric R215A "Peanut" (6.75 x 18) 2 2 N L Mercury (Wooden Module) X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten Kit X 1927 CK 10 10 - Northern Electric R215A "Peanut" 6.75 x 18 2 2 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten with De Luxe Renaissance Cabinet X 1927 M 10 10 - Northern Electric R215A "Peanut" 6.75 x 18 2 2 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten with Model "D" Cabinet X 1927 M 10 10 - Northern Electric R215A "Peanut" 6.75 x 18 2 2 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten Model H Cabinet X December 1928 M / CK 10 10 - Northern Electric R215A "Peanut" Partial Decorative Wood 6.75 x 18 1 - Drum 4 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten Model H Cabinet Two-Dial Control X December 1928 M / CK 10 10 - Northern Electric R215A "Peanut" 6.75 x 18 2 2 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten DeLuxe Cabinet X December 1928 M / CK 10 10 - Northern Electric R215A "Peanut" Partial Decorative Wood 6.75 x 18 1 - Drum 4 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
7 " " " " " " " Mercury Super Ten DeLuxe Cabinet Two-Dial Control X December 1928 M / CK 10 10 - Northern Electric R215A "Peanut" 6.75 x 18 2 2 N L Mercury Wooden Module X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten Electric Single Control Without Reproducer PNF December 1928 (M) (10) Northern Electric R215A "Peanut" NIF NIF NIF NIF L Mercury (Wooden Module) X NIF (Air) (Air) Lowry " " " " " "
" " " " " " " " " " Mercury Super Ten Electric Two Control PNF December 1928 (M) (10) Northern Electric R215A "Peanut" NIF NIF NIF NIF L Mercury (Wooden Module) X NIF (Air) (Air) Lowry " " " " " "
Metaform Metaform System Receiver   July 1924 BK Walt S. Thompson, Jr.
Microdyne Apex Electric Mfg. Co. Microdyne X November 1924 M / KD 7 7 - 201A 7 x 18 2 2 N L Apex Short Cylindrical X NIF Air Air (E. K. Oxner) Chicago
Modern Modern Electric Mfg. Co. Modern 30 K. C. Long Wave Transformer   October 1924 P n / a n / a Modern Misc 30 Toledo, Ohio
Mutual Radio Mutual Radio Company Model L - Long Box X (1925) M 6 6 - 199 7 x 18 2 2 N L         Wellesely, Mass
" " " " " " " " " " " " " Model P - Portable X (1925) M 6 6 - 199 7 x 18 2 2 N L         " " " " "
" " " " " " " " " " " " " Model S - Short Box X (1925) M 6 6 - 199 7 x 18 2 2 N L                     " " " " "
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
N. E. T. & T. CO. N. E. T. & T. CO. Super-Heterodyne Radio Receiver X December 4, 1923 BP / K 6 / 7 6 - 201A 12 x 24 2 2 1 -V W N.E.T. & T. CO. Tall Rectangular X NIF NIF NIF Engineering Department Boston
New Jersey Radio Supply New Jersey Radio Supply Company Super-Heterodyne 8-Tube Deluxe   May 1924 CB 8 Newark, N. J.
New York Coil New York Coil Co. Super Heterodyne Parts   May 1924 P New York Coil Co. 100 Air Air New York City
" " " " " " " " " " " Super Heterodyne Kit   June 1924 K New York Coil Co. " " " " " " " " " " "
Nolte Nolte Manufacturing Company Radio Frequency Coil   June 1926 P n / a n / a Jersey City, N. J.
Northern Electric Northern Electric Co., Limited (of Canada) 4-B   (January 1924) M 6     Northern Electric Co., Limited (of Canada)             Canada
" " " " " " " " " " " " " " " " " " " " R-4 Superheterodyne   August 1924 M 6 Northern Electric Co., Limited (of Canada) 50 Metal " " "
" " " " " " " " " " " " " " " " " " " " R-4-L Superheterodyne   1926 M 7 Northern Electric Co., Limited (of Canada) 50 Metal " " "
Northern Electric / Victor " " " " " " " " " " " " " " R-40 Superheterodyne   1926 M 7 Northern Electric Co., Limited (of Canada) 50 Metal " " "
" " " " " " " " " " " " " " " " " " " " " " R-41 Superheterodyne   1926 M 8 Northern Electric Co., Limited (of Canada) 50 Metal " " "
" " " " " " " " " " " " " " " " " " " " Filter Transformer   February 1926 M n / a Northern Electric Co., Limited (of Canada) 42 " " "
Nutron Nutron Manufacturing Company Nutron No "B" Battery [Solodyne] Super-Heterodyne   October 1924 BK 6                                 Passaic, New Jersey
O' Connor Frequency Changer A. O' Connor & Company Frequency-Changer [Unit] X January 1925 CK 1 201A 7 x 14 2 2 + Tap Switch N L or W Eastern Coil Co. Self-supporting Coil Is Eight Sided X 500 n/a n/a A. O' Connor NPF     Cleveland
" " " " " " " " " " " " " " " " " " " Two-Tube Super-Heterodyne   August 1925 CB 2             Eastern Coil Co.                   " " "
Palmar Palmar Products Palmar Long Wave Amplifier   February 1925 K 5 [module]             Palmar Products                    
Paramount Paramount Radio Corporation Paramount Super Heterodyne Kit PNF February 1925 K NIF NIF NIF NIF NIF NIF NIF Paramount NIF PNF NIF NIF NIF Newark, New Jersey
Parker De luxe Super-Heterodyne   April 1925 CB 7
Pearne Superheterodyne   March 1924 CB 8 Frank D. Pearne
" " Superheterodyne PNF June 1924 CB 8 PNF 100 Frank D. Pearne
Perfection Perfection Radio Mfg. Co. Superheterodyne   March 1925 CB Philadelphia
Pfaff Improved Laboratory Superheterodyne   Summer 1926 CB 7 Silver Marshall Ernest R. Pfaff
Pfanstiehl Radio Co. Pfanstiehl Radio Co. Universal Oscillator Unit P-600   December 1924 P n / a n / a 30 to 150 Highland Park, Ill.
Phenix - Ultradyne Phenix Radio Corporation Ultradyne Super-Heterodyne X February 1924 CB 6 6 - 201A 7 x 24 2 4 N L Hand-Wound Misc X 115 Air Air R. E. Lacault, A.M., IRE X New York City
Phenix - Ultradyne L-1 (Six tube) " " " " " " " " " Ultradyne, The Improved Super-Heterodyne L-1 X March 1924 BK 6 6 - 201A 7 x 24 2 4 N L or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air R. E. Lacault, A.M., IRE X " " " " "
Phenix - Ultradyne L-1 Eight Tube " " " " " " " " " Ultradyne, The Improved Super-Heterodyne L-1 X March 1924 BK 8 8 - 201A 7 x 30 2 4 N L or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air R. E. Lacault, A.M., IRE X " " " " "
Phenix Ultradyne L-1 - Seven Tube n / a Real Super-Heterodyne   May 1924 CB 7 7 - 201A 7 x 30 2 4 N L or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air R. E. Lacault, A.M., IRE X W. F. Kuster Chicago
Phenix - Ultradyne L-2 " " " " " " " " " Ultradyne L-2 X November 1924 BK 8 8 - 201A 7 x 30 2 4 N L or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air R. E. Lacault, A.M., IRE X New York City
Phenix - Ultradyne L-2 AC n / a Electric Ultradyne L-2 (Modified for A-C)   December 1928 BK 8   7 x 30 2 4 N L or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air R. E. Lacault, A.M., IRE X " " " " "
Phenix Radio - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Phenix Radio Brown Vertical Tuna Can X 115 Air Air Gerald M. Best X W. P. Brush, Designer San Francisco
Pink-A-Tone Pinkerton Radio Corporation Pink-A-Tone 150 K. C.   October 1924 K 7 Pink-A-Tone Cylindrical 150 Benjamin (?) Meissner New York City
Popular Radio (magazine) Resistance-Coupled Superheterodyne Using Honeycomb Coils   June 1923 CB 8
" " " " " " " " " (Simplified Super-Heterodyne)   November 1924 CB [7]
" " " " " " " " " Resistance-Coupled Superheterodyne   July 1925 CB 8
" " " " " " " " " Eight-Tube Superheterodyne with Single Control   October 1925 CB 8
" " " " " " " " " Town & Country Receiver   July 1926 CB 7 Silver Marshall Misc 60 - 70 Steel S. Gordon Taylor
Pote' Choke Coil-Impedance-Coupled Superheterodyne   July 1927 CB 9 45 Choke Coil Impedance A. E. Pote'
Precel Electrical Manufacturer's Agency, Inc. Super Kit   September 1924 K Chicago
Precise Precise Manufacturing Corp. Precise I. F. Transformer #901 X October 1924 P n / a n / a Precise Misc X 35 Iron James Leo McLaughlin X Rochester, N. Y.
" " " " " " " " " " " Super-Multiformer No. 1700 X October 1924 P n / a n / a Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X " " " " "
" " Precise Manufacturing Corp. / U-Ni-Dial Radio Company One Control Seven Tube Super-Heterodyne X November 1924 BK 7 1 Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X East Orange, N. J.
" " " " " " " " " " " " One Control Seven Tube Super-Heterodyne (Improved)   December 1924 BK 7 1 Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X " " " " " "
" " " " " " " " " " " " Single Control Superheterodyne X October 1925 BK 8 1 Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X " " " " " "
" " " " " " " " " " " " Single Control Superheterodyne [updated]   April 1926 Bk 8 Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X " " " " " "
" " " " " " " " " " " " Seven Tube Super-Heterodyne with Loop X Summer 1926 BK 7 Precise 4 IF Stages in a Module X 35 Iron James Leo McLaughlin X " " " " " "
Precise - Citizens Radio Call Book "A Super Using the Universal Automatic Filament Control System"   Summer ? 1926 CB 8   Precise 4 IF Stages in a Module X 35 Iron New York City
Precise - Flewelling Eight n / a Flewelling 8   September 1926 CB 8     Flewelling   Air ?? Air ?? Edmond T. Flewelling      
Precise - McDonald n / a Grand Prix Eight Tube Super-Heterodyne   October 1925 CB 8 Precise Module X James McDonald
Precision Coil Company Precision Coil Company Autodyne Coupler   February 1925 P n / a n / a New York City
Preston Preston Portable Super-Heterodyne   July 1926 CB 7 Silver Marshall Cecil W. Preston
Princeton   Princeton Superheterodyne Kit     K                                    
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
QST Magazine Super n / a QST Magazine Super   April 1923 CB                            
Qualitone Qualitone Radio Corp. Qualitone Super Kit   October 1925 K 7 or 8 Qualitone Tall Misshapen Rectangle X (95) (Air) (Air) John G. Ryan Chicago
Quality Hi-Power Quality Radio Supply Quality Hi-Power Long Wave Super Heterodyne Transformers   Fall 1925 K n / a     n / a       Quality Radio                   Richmond, Indiana
Radek Radek Radek Superheterodyne   CB 8
Radiodyne Western Coil and Electrical Co. The New 9 Tube Super Radiodyne Series WC-20 (1926) M 9 9 - 199 (7x24) 2 - Drum 2 N NIF (Western Coil and Electrical Co.) NIF PNF NIF NIF NIF Racine, WI
" " " " " " " " " " " " " " The New One Dial 7 Tube Super Radiodyne Series WC-21 (1926) M 7 7 - 199 (7x24) 2 - Drum 2 N NIF (Western Coil and Electrical Co.) NIF PNF NIF NIF NIF " " " "
Radio Age "Dial Twister's" Reflexed Super   October 1924 CB 6 Homemade Air Air
" " " (Seven Tube Super-Heterodyne)   June 1925 CB 7
" " " (Radio Age Super)   March 1927 CB Silver Marshall
Radio Apparatus Co., Inc. Radio Apparatus Co., Inc. Superheterodyne   Fall 1924 CB Omaha, Nebr.
Radio Broadcast Radio Broadcast Super   March 1927 CB Silver Marshall
Radio Constructor's Radio Constructor's Service Matched IF Transformer Kit   September 4, 1926 K n / a n / a Radio Constructor's Service Silicon Steel Laminations Los Angeles
Radio Digest Illustrated [Magazine] (Super-Heterodyne)   June 1924 CB 8
" " " " " " " " " " " " DX Seven Super-Het   1924 CB 7
Radio Experimenter's Bureau Radio Experimenter's Bureau The Super-Heterodyne   February 1924 CB n / a Omaha, Nebr.
Radio Journal [Magazine] n / a Two Tube Super Heterodyne   June 1923 CB 2 2 - 201A           L. R. [Roy] Armstrong Los Angeles
" " " " " " " " " n / a Two Tube Super Heterodyne With UV1714 Transformer ???   September 1923 CB 2 2 - 201A         60   L. R. [Roy] Armstrong " " " " "
" " " " " " " " " n / a (Six ?? Tube Super Heterodyne)   December 1923 CB 6 ??           L. R. [Roy] Armstrong " " " " "
" " " " " " " " " n / a Intermediate Frequency Air Core Transformers   November 1924 P n / a n / a n / a n / a   Cylindrical     L. R. [Roy] Armstrong " " " " "
Radio Mechanics [Magazine] (Radio Mechanics Man-O-War Super)   March 1927 CB Silver Marshall Misc   60 Steel  
" " " " " " " " " " (Radio Mechanics Portable Super)   March 1927 CB Silver Marshall Misc   60 Steel  
Radio News [Staff] Standard Super-Heterodyne Using Resistance Coupling   March 1925 CB 7 New York City
" " " " " " Resistance Coupled Super-Heterodyne   April 1926 CB 8 " " " " "
Radio News Laboratories Radio News Laboratories Super Het Traveling Companion   November 1926 CB 6 Silver Marshall Misc   60 Steel  
" " " " " " " " " " " " " " " " " " (Radio News Super)   March 1927 CB Silver Marshall Misc   60 Steel  
Radio Owners Service Company Radio Owners service Company Eight Tube Baseboard Model Kit   October 1925 BK 8 Jefferson / Remler Oakland
" " " " " " " " " " " " " " " " " " " " " " Eight Tube Shielded Model Kit   October 1925 BK 8 " " "
" " " " " " " " " " " " " " " " " Receptrad Super   June 1924 BK 8 Iron " " " " "
" " " " " " " " " " " " " " " " " Receptrad   September 1924 BK 8 Iron " " " " "
Radio Review A Power Six-Tube Super-Heterodyne   September 1925 BK 6 New York City
Radio World Illustrated [Magazine] n / a Three Tube Super-Heterodyne   August 9, 1924 BK 3 Honeycomb " " " " "
" " " " " " " " " " " " " " Six Tube Super-Heterodyne Using A Variometer   December 6, 1924 BK 6 3 J. E. Anderson " " " " "
" " " " " " " " " " " " " " Portable Super-Heterodyne   June 13, 1925 BK Wainwright Astor " " " " "
" " " " " " " " " " " " " " 8 Tube Set   July 4, 1925 BK 8 Abner J. Gelula " " " " "
" " " " " " " " " " " " " " 8-Tube Super-Heterodyne   September 26, 1925 BK 8 Sidney Finkelstein " " " " "
" " " " " " " " " " " " " " DX Super-Heterodyne   November 21, 1925 BK 8 [+ 1] * 3 J. E. Anderson " " " " "
" " " " " " " " " " " " " " Housing the Pressley Super-Heterodyne   December 1925 BK " " " " " " " " " "
" " " " " " " " " " " " " " Super-Heterodyne De Luxe   March 1926 BK " " " " "
" " " " " " " " " " " " " " A Super From An Old Set   April 1926 BK [Caesar King] " " " " "
" " " " " " " " " " " " " " Converted Super   March 1928 BK " " " " "
" " " " " " " " " " " " " " A Short-Wave Mixer   July 1928 BK 2 n/a n/a 70 ? n/a n/a Herman Bernard
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
Rathbun n / a Improved Super-Heterodyne X June 1924 BK 8 8 - 201A (7 x 32) 2 2 N W Homebuilt Vertical Tuna Can with Bottom Flange X 150 Air Air John B. Rathbun        
Raven Raven Radio, Inc. Superheterodyne Kit X October 1924 K n / a n / a Raven Vertical Tuna Can w/ Terminals on Top X NIF Air Air Frank A. Raven X Albany, NY
" " " " " " " " Superheterodyne Module Kit X December 1924 K n / a n / a Raven Module Air Air Frank A. Raven X " " " "
" " " " " " " " Superheterodyne with Module X December 1924 BK 8   3 Raven Module Air Air Frank A. Raven X " " " "
" " " " " " " " Superheterodyne Unwired Set   November 1925 BK Raven   Air Air Frank A. Raven X " " " "
Raven - Barawick " " " " " " 8 Tube Superheterodyne X October 1924 CK 8 8 - 201A 7x36 2 Raven Vertical Tuna Can w/ Terminals on Top X NIF " " Frank A. Raven X " " " "
Ray-Dee-Artcraft Ray-Dee-Artcraft Instrument Company Super-Heterodyne Neutro-Trans Type 10-A   September 1923 K n / a     Ray-Dee-Artcraft   X 86 Air Air (Arthur L. Munzig) Redlands, Calif.
" " " " " " " " " " " " " " " " " Four Tube Super Heterodyne Neutrodyne   August 1923 BK 4     Ray-Dee-Artcraft Tall Cylinders X 86 Air Air Arthur L. Munzig " " " " "
" " " " " " " " " " " " " " " " " Five Tube Super Heterodyne Neutrodyne   October 1923 BK 5     Ray-Dee-Artcraft Tall Cylinders X 86 Air Air Arthur L. Munzig " " " " "
" " " " " " " " " " " " " " " " " Six Tube Super Heterodyne Neutrodyne   October 1923 BK 6     Ray-Dee-Artcraft Tall Cylinders X 86 Air Air Arthur L. Munzig " " " " "
" " " " " " " " " " " " " " " " " Super Heterodyne Neutrodyne Reflex DX   October 1923 BK 6     Ray-Dee-Artcraft Tall Cylinders X 86 Air Air Arthur L. Munzig " " " " "
" " " " " " " " " " " " " " " " " Tuned R. F. Super Heterodyne X March 1924 BK 8 7 - 201A & 1 - 200A 7 x 36 2 or 6 (5) N L or W Ray-Dee-Artcraft Tall Cylinders X 86 Air Air Arthur L.Munzig " " " " "
R. B. C. " " " " " " " " " " " Type SR Radio Frequency Transformers   March 1924 K n / a "  
" " " " " " " " " " " " " " R. B. C.-Type KM Radio Frequency Filter, Coupler, & Transformers   November 1924 K n / a Rieger-Bailey Air Air  
" " " " " " " " " " " " " " R. B. C. Superheterodyne   January 1925 BK 8  
R. C. A. Radio Corporation Of America IF Transformer UV-1714 X January 15, 1922 P n / a n / a n / a n / a n / a n / a n / a R. C. A. [General Electric] Misc X 60 Iron n / a Camden, N. J.
" " " " " " " " " " " " " " IF Transformer UV-1716 X January 15, 1922 P n / a n / a n / a n / a n / a n / a n / a R. C. A. [General Electric] Misc X 60 Iron n / a " " " " "
" " " " " " " " " " " " " " "SOS" Super Heterodyne Receiver (1922) M n / a " " " " "
" " " " " " " " " " " " " " Radiola Super VIII AR-810   March 4, 1924 ^^^^ M 6 6 - 199   2 2 1 - Optional Internal Loop General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola Super-Heterodyne AR-812 X March 4, 1924 ^^ M 6 6 - 199   2 2 1 - Optional L General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " (Radiola Console AR-813)   (1924) M 6 6 - 199   2 2 1 - Optional L General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " (Phono-Radio Panel AR-813) X (1924) M 6 6 - 199   2 2 1 - Optional L General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 24   May, 12 1925 ^^^^ M 6 6 - 199   2 2 1 - Optional L General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 26   June 13, 1925 ^^^^ M 6 6 - 199   2 2 1 - Optional Internal Loop General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 28 (D-C)   August 1925 ^^ M 8   2 - Drum 2 1 - Optional L General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 25   September 10, 1925 ^^^^ M 6 6 - 199   2 2 1 - Optional L General Electic Reflexed Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 28 (A-C) ^^   September 29, 1925 ^^^^ M 8   2 - Drum 2 1 - Optional L General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 30 (A-C)   February 15, 1925 ^^^^ ?? M 8 [+2 A-C] ^ 199, 210, 281   2 - Drum 2 1 - Optional Internal Loop General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 30-A (A-C)   August 7, 1927 ^^^^ M 8 [+2 A-C] ^ 199, 210, 281   2 - Drum 2 1 - Optional Internal Loop General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 30-A (D-C)   September 14, 1927 ^^^^ M 8 199 & 171   2 - Drum 2 1 - Optional Internal Loop General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 32 (A-C)   July 27, 1927 ^^^^ M 8 [+ 2 A-C] ^ 199, 210, 281   2 - Drum 2 1 - Optional Internal Loop General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 32 (D-C)   September 15, 1927 ^^^^ M 8 199 & 171   2 - Drum 2 1 - Optional Internal Loop General Electic Catacomb X 42 3 Mil Silicon Steel Laminations n / a Edwin H. Armstrong & Harry Houck " " " " "
" " " " " " " " " " " " " " Radiola 60 (A-C)   August 13, 1928 ^^^^ M 9 " " " " "
" " " " " " " " " " " " " " Radiola 60C Console ?????   M
" " " " " " " " " " " " " " Radiola 62 [A-C] AR-892   September 14, 1928 ^^^^ M 9 " " " " "
" " " " " " " " " " " " " " Radiola 64 De Luxe (A-C)   October 23, 1928 ^^^^ M 11 " " " " "
" " " " " " " " " " " " " " Radiola 66 (A-C)   July 18, 1929 ^^^^ M 8 175 " " " " "
" " " " " " " " " " " " " " Radiola 67 Radio / Phonograph (A-C)   September 28, 1929 ^^^^ M 10 " " " " "
R. C. A. - Abbott n / a Compact Nine Tube Super-Heterodyne X 1924 CB 9 9 - 201A or 199 8 x 24 2 7 N L R. C. A. UV-1716 Misc X 60 Iron Air ?? Harry Abbott Harry Abbott Chicago
R. C. A. - Eltz n / a Super-Heterodyne Receiver   November 1923 BK 7 R. C. A. UV-1716 Misc X 48 Iron Air ?? George J. Eltz, Jr. New York City
R. C. A - Pearne n / a Eight Tube Super-heterodyne Receiver   November 1923 BK 8 (201A) (8 x 36) 6 7 N W (General Electric UV1714 / UV1716) Misc X 60 Iron Iron Frank D. Pearne
" " " " " n / a Ten Tube Super-heterodyne Receiver   November 1923 BK 10 (201A) (8 x 36) 6 7 N W (General Electric UV1714 / UV1716) Misc X 60 Iron Iron Frank D. Pearne
R. C. A. - Rathbun n / a Junior Super-Heterodyne (SH-9)   January 1924 BK 2 + 3 + 3 201A, or 216A, or 199 Three Separate Cabinets 2 + 1 6 N B General Electric UV1714 / UV1716 Misc X 60 Iron Two Honeycomb Air Coils John B. Rathbun
R. C. A. - Roberts n / a Practical Super-Heterodyne with 199s X August 1923 BK 5 5 - 199 or 201A (7 x 24) 2 2 N L General Electric UV-1716 Misc X 60 Iron Two 750 Honeycomb Coils Walter Van B. Roberts X Princeton University, N. J.
Real Equity Shop, The - Ultradyne Real Equity Shop, The Equity Ultradyne & SuperHeterodyne Transformers   March 1924 K (8) Real Equity Shop Vertical Tuna Can X 30 Two Honeycomb Air Coils Air Chicago
Real Equity Shop, The Real Equity Shop, The Equity SuperHeterodyne   May 1924 BK Real Equity Shop Vertical Tuna Can X 30 Two Honeycomb Air Coils Air Chicago
Real Equity Shop, The Real Equity Shop, The Super-Heterodyne   October 1924 BK Real Equity Shop Vertical Tuna Can X 30 Two Honeycomb Air Coils Air Chicago
Receptrad Radio Receptor Co. Super-Heterodyne Kit [SH8-1] X March 29, 1924 K n / a n / a n / a n / a n / a n / a n / a Radio Receptor Cylindrical X 100 "Comunited Iron" Air Lieut. Victor Greiff   New York City
" " " " " " " " " " " Eight Tube Long Distance Receiver [SH8-1] X 1924 BK 8 8 - 201A 7 x 40 2 6 1 -V & 1 - MA L Radio Receptor Cylindrical X 100 "Comunited Iron" Air Lieut. Victor Greiff   Allan C. Forbe " " " " "
Receptrad - Barry Barry, Jas A. Improved Super Heterodyne Model B X 1924 CB 8 8 - 201A 7 x 40 2 6 1 -V & 1 - MA L Radio Receptor Cylindrical X 100 "Comunited Iron" Air Lieut. Victor Greiff   Jas. A. "Jimmie" Barry Fort Smith, AR
Receptrad - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Radio Receptor Cylindrical X 100 "Comunited Iron" Air Gerald M. Best X W. P. Brush, Designer San Francisco
Receptrad - Green n / a Easily Made Super-Het X October 1924 BK 8 8 - 199 7 x 28 2 2 N TL Radio Receptor or Silver Marshall Cylindrical or Square X 100 or 50 "Comunited Iron" or Steel Homebuilt Air Paul Green   Chicago
Receptrad - Green n / a Troubleshooting the Super-Het X December 1924 BK 8 8 - 199 or 201A 7 x 28 2 5 N TL Radio Receptor or Silver Marshall Cylindrical or Square X 100 or 50 "Comunited Iron" or Steel Possible Honeycomb Coils or Air Paul Green       " " "
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
R. E. L. Radio Electric Laboratories R. E. L. Units   August 1927 P Robert E. Lacault X New York City
R. E. L. 9 " " " " " " " " " All Wave R. E. L. 9   February 1928 BK 8 AC 8 x 24 2 - Drum 2 N Robert E. Lacault X " " " " "
Reliable Reliable Radio Mfg. Co. Intermediate Frequency Transformers   September 1925 K
Remler Remler Radio Mfg. Company Remler Super Kit May 1924 P n / a n / a n / a n / a n / a n / a n / a Remler Cylindrical X 45 Iron Air (Gerald M. Best) San Francisco / Chicago
" " " " " " " " " " " " Best's Original 45,000 Cycle Superheterodyne   May 1924 BK 8 8 - 199 6 x 26 TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best's Original 45,000 Cycle Superheterodyne - 2nd Generation   September 1924 BK 8 8 - 199 6 x 27 TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best's Improved 45,000 Cycle Superheterodyne   January 1925 BK 8 [7] 199 & [1] 201A Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45 K.C. Superheterodyne   Spring 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45,000 Cycle Superheterodyne   April 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45,000 Cycle Superheterodyne Adapted to 201As   April 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Improved G. M. Best 45,000 Cycle Super-Heterodyne   May 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Modified Best Superheterodyne   BK 8 [5] 201A & [3] 199 Remler Cylindrical X 45 Iron Air Gerald M. Best X San Francisco / Chicago
" " " " " " " " " " " " Best Modified Superheterodyne Baseboard Model X (Fall 1925) BK 8 5 - 201A & 3 - 199 10 x 21 2 3 1 - V L Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best Modified Superheterodyne Shielded Model X (Fall 1925) BK 7 7 - 199 10 x 21 3 2 1 - V W Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Six Tube Super-Heterodyne With One Crystal Detector   August 1925 BK 6 [+ 1] * Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " (Nine Tube Super Heterodyne) ^   1925 ^ BK 9 ^ Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best Remler 8-Tube Super   September 1925 BK 8 [5] 201A & [3] 199 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Barawik's Portable Remler - Best Super Fall 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Eight Tube Superheterodyne   Fall 1925 BK 8     Remler Cylindrical X 45 Iron Air Gerald M. Best X     " " " " " " " "
" " " " " " " " " " " " Remler "8" Tube Super-Heterodyne Fall 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Superheterodyne with Plug-in Coils   December 1925 BK 8 [5] 201A & [3] 199 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45,000 Cycle Superheterodyne for use with ABC Eliminators   December 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45,000 Cycle Superheterodyne Deluxe Model DL-5   December 1925 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best 45 K.C. Superheterodyne With Impedance-Coupled Amplification   Spring 1926 BK 9 Remler Impedance-Coupled 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best's Five Tube Super   September 1926 BK 5 [+ 2] ** Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best Remler 8-Tube Super   September 1926 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best-Remler Portable 8-Tube Super   October 1926 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best Shielded 9 Tube Superheterodyne   October 1926 BK 9 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Improved Remler 8-Tube Super   Fall 1926 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best's Six Tube Super   November 1926 BK 6 [+ 1] * Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Best Shielded 9 Tube Superheterodyne Modified)   November 1926 BK 9 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " (1927 Super)   March 1927 BK Remler Cylindrical   " " " "   Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Improved Best 45 K.C. Super Nine X September 1927 BK 9 7 - 199 & 2 - 112 or 171 7 x 21 2 2 N TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Citizens [Call Book] Super Nine X November 1927 BK 9 6 - 199, 1 - 201A, & 2 - 112 7 x 26 2 - Drum 3 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " New Remler 45 K.C. A.C. Super   Fall 1927 BK 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Shielded Grid 115 K.C. Super-Heterodyne   Fall 1927 BK 9 Remler Cylindrical ?? 115 " " Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Seven Tube Shielded Grid 115 K.C. Super-Heterodyne   March 1928 BK 7     Remler   " " "   Gerald M. Best X     " " " " " " " "
" " " " " " " " " " " " Modified Shielded Grid 115 K.C. Super-Heterodyne   March 1928 BK 9 [5 *****]   ??   Remler " " "   Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Revamped Best 45 K.C. Super   October 1928 BK 9 Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
" " " " " " " " " " " " Remler 29 Screen Grid Super   September 1928 CK 8 Remler Short Cylindrical 115 " "   Gerald M. Best X " " " " " " " "
Remler Infradyne " " " " " " " " " " Remler Infradyne Amplifier No. 700 X August 1926 CK n / a n / a n / a n / a n / a n / a n / a Remler Module X 3490 Air Air E. M. Sargent   " " " " " " " "
" " " " " " " " " " " " " " " Sargent Infradyne Super Heterodyne X August 1926 CK 10 6 - 201A & 4 - 199 (7 x 30) 2 5 1 - V W Remler Module X 3490 Air Air E. M. Sargent X " " " " " " " "
" " " " " " " " " " " " " " " Sargent-Rayment Revised Infradyne X September 1926 CK 10 6 - 201A & 4 - 199 7 x 28 2 5 1 - V W Remler Module X 3490 Air Air E. M. Sargent & L. C. Rayment X " " " " " " " "
" " " " " " " " " " " " " " " Sargent-Rayment Improved Infradyne X November 1926 CK 10 [5 *****] 6 - 201A & 4 - 199 7 x 28 2 5 1 - V W Remler Module X 3490 Air Air E. M. Sargent & L. C. Rayment X " " " " " " " "
" " " " " " " " " " " " " " " Sargent-Rayment Infradyne Combination Set (Combines with second 5 tube TRF set) X November 1926 CK 10 [5 *****] 6 - 201A & 4 - 199 7 x 28 2 5 1 - V W Remler Module X 3490 Air Air E. M. Sargent & L. C. Rayment X     " " " " " " " "
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
Remler - American Beauty American-Beauty "American-Beauty Custom Built Remler Superheterodyne" X (1925) CB 8 8 - 199 (7 x 24) 2 2 1 -V   Remler Cylindrical   45 Iron Air Gerald M. Best X American-Beauty   " " " " " " " "
Remler - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Remler Cylindrical X 45 Iron Air Gerald M. Best X W. P. Brush, Designer San Francisco
Remler - Citizens Radio Call Book n / a 45 Kilocycle Superheterodyne   Fall 1925 BK 9 6 -199 & 3 - 201A Remler Cylindrical X 45 Iron Air Gerald M. Best X New York City
Remler - Citizens Radio Call Book n / a Citizen Super Eight X March 1927 BK 8 199, 112, & 171 7 x 26 2 3 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " "
Remler - Citizens Radio Call Book n / a Citizen Super Nine X September 1927 BK 9 7 - 199, 1 - 201A, & 1 - 112 7 x 26 2 - Drum 3 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " "
Remler - Citizens Radio Call Book n / a 115 K.C. Shielded Grid Super   March 1929 BK (Remler) 115 Gerald M. Best X New York City
Remler - Garrett Wrenn Lewis labs Garrett Wrenn Lewis laboratories Garrett Wrenn Lewis laboratories Super-Heterodyne S7 X   CB 8 Remler Cylindrical X 45 Iron Air Gerald M. Best X San Francisco
Remler - Hetro-Five n / a Hetro-Five Superheterodyne January 1926 BK 5 5 - 201A 7 x 26 or 7 x 24 2 or 4 3 N W Remler Cylindrical X 45 Not Used Air C. E. Butterfield Chicago
Remler - Popular Mechanics n / a Super-Heterodyne Eight X February 1925 CB 8 7 - 201A & 1 - 200A 7 x 26 2 5 1 -V & 1 - MA TL Remler Cylindrical X 45 Iron Air F. L. Brittin, PSM Radio Editor Chicago
Remler - Popular Mechanics with Resistance Coupled Audio n / a Popular Mechanics 1926 Nine with Resistance Coupled Audio X January 1926 CB 9 9 - 201A (7 x 30) 2 1 1 -V & 1 - MA TL Remler Cylindrical X 45 Iron Air " " " " "
Remler - Popular Mechanics Economy Nine   March 1927 CB 9 Remler " " "
Remler - Popular Mechanics Resistance Coupled n / a Popular Mechanics 1928 Economy 9 X November 1927 CB 9 4 - 240, 4 - 201A, & 1 - 112 7 x 26 2 1 N TL or W 5 - Double Resistor Mounts Small Modules / Cylindrical X 45 n / a Air " " " " "
Remler - Radio Doctors Radio Doctors, Inc. Posth Super-Heterodyne (A-4) X September 1924 CB 8 8 - 201A 8 x 32 2 6 1 -V & 1 - MA L Remler Cylindrical X 45 Iron Air "Mr. Posth" of Radio Doctors, Inc. John B. Rathbun Chicago
Remler - Radio Owners Service Radio Owners Service Company ROSC Remler Superhet Eight PNF October 1925 CK 8 8 - 199 7 x 20 2 2 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X San Francisco / Chicago
Remler - Randolph Randolph Radio Corporation Super-Heterodyne   December 1924 CK 8 Remler / Columbia 45 / 38 Gerald M. Best X " " "
Remler - Scott n / a Original Scott Super 8 X November 1924 CB 8 8 - 199 (7 x 28) 2 4 (1 - SV) TL Remler Cylindrical X 45 Iron Air E. H. Scott X Chicago
Remler - Scott n / a Original Scott Super 9 March 1925 CB 9 9 - 199 (7 x 28) 2 4 (1 - SV) TL Remler Cylindrical X 45 Iron Air E. H. Scott X Chicago
Remler - Southern Electrical Southern Electrical Co. Southern Electrical Superhet X (1925) BK 8 5 - 199 & 3 -201A 7 x 20 2 2 1 - V TL Remler Cylindrical X 45 Iron Air Gerald M. Best X Southern Electrical Co.
Remler - Standard Standard Radio Company New 1926 Model 8 Tube Super Heterodyne   Spring 1926 BK 8 Remler Kansas City, Mo.
Remler Infradyne - Remloc Remloc Radio Company Sargent Infradyne Super Heterodyne   August 1926 BK 10 Remler Cylindrical X " " " " " " E. M. Sargent & L. C. Rayment, developers
Resas, Inc. Resas, Inc. 10,000 Meter Super-Heterodyne   July 1924 CB Resas New York City
Resistance Coupled - Popular Mechanics n / a Popular Mechanics 1927 Resistance Coupled Eight X October 1926 CB 8 5 - Daven MU-20 & 3 - 201A 7 x 30 2 2 1 - V [Double Range] TL Daven 3-Stage Super Amp Module / Misc X 45 n / a Air New York City
Resistance Coupled - Popular Mechanics n / a Popular Mechanics 1928 Economy 9 X November 1927 CB 9 4 - 240, 4 - 201A, & 1 - 112A 7 x 26 2 1 N TL or W 5 - Double Resistor Mounts Small Modules / Misc X 45 n / a Air " " " " "
Resistance Coupled - Popular Radio n / a Popular Radio Resistance Coupled Super   June 1923 CB 8 8 - 201A
Rhodes   CB St. Louis
Richards (Richards Superheterodyne Reflex)   January 1926 CB 8
Richardson Richardson Radio Inc. Richardson Self-Evident Superhet X September 1924 CK / K / P/ BP 9 NIF 7 x 26 NIF NIF NIF NIF Richardson Cylindrical X 25 NIF NIF D. W. Richardson New York City
Rieger-Bailey Rieger-Bailey Co. of America, Inc. Type SR Radio Frequency Transformers PNF February 1924 P n / a n / a Rieger-Bailey (Vertical Tuna Can)   30 Air Air Philadelphia
" " " " " " " " " " " " " " " " Type "RBC" A - Radio Frequency Transformer PNF May 1924 P n / a n / a " " " " " " " " " " " Air " " " "
" " " " " " " " " " " " " " " " RBC KM Filter, Oscillator Coupler, & Matched Transformers X December 1924 K 8 " " " " " Vertical Tuna Can " " " Air " " " "
Ritz Ritz Super-Heterodyne   May 1925 CB 8 Remler 45 Iron Charles Caesar Ritz
Roberts n / a Practical Super-Heterodyne with 199s X August 1923 CB 6 6 - 199 or 201A (7 x 24) 2 1 N L Pacent Honeycomb & Homemade Air Coils Honeycomb & Mailing Tube Coils X 100 Air Air Walter Van B. Roberts X Princeton University, N. J.
Roberts Radio Service Roberts Radio Service Seven Tube Super Heterodyne   Fall 1924 CB 7 Chicago
Robertson-Davis Robertson-Davis Co., Inc. Automatic Tuning Super Six   October 1928 K 6 Robertson-Davis Tall Rectangular 465 Impedance Impedance Chicago
" " " " " " " " " " " " " " Single Dial Automatic Super Six   March 1929 K 6 " " " " " " " " " " " " " " " " " " " " "
Roffy Stamm-Lawson Radio Manufacturing Co. Roffy Transformers   December 1924 K Upland, Ca.
Rosenbloom William Rosenbloom Co. W. R. Kit   January 1925 K 8 Rosenbloom William Rosenbloom Revere & Manttapan, Mass.
" " " " " " " " " " " " " " Rosenbloom Portable Superheterodyne Plans X July 1925 K / BP 8 8 - 199 Small Weekender Suitcase 2 2 N L " " " " " NIF PNF NIF NIF NIF William Rosenbloom " " " " " "
" " " " " " " " " " " " " " Rosenbloom Eight-Tube Superheterodyne   July 1925 K 8 " " " " " William Rosenbloom " " " " " "
Rowe Rowe Noiseless Intermediate Amplifier   Summer 1926 K 5 G. C. B. Rowe
Rubicon Rubicon Company Rubicon "Navy Type D" and "SR" Transformers X Fall 1924 K n/a n/a n/a n/a n/a n/a n/a Rubicon Short, Fat Cylindrical with Frame X (50) NIF NIF Philadelphia
" " " " " " " " " " Rubicon Super Set Kit PNF February 1925 K n/a n/a n/a n/a n/a n/a n/a " " " " " " " " X " " NIF NIF " " " "
" " " " " " " " " " Rubicon Eight Tube Super Kit PNF February 1925 BK 8 NIF NIF NIF NIF NIF NIF " " " " " " " " X " " NIF NIF " " " "
" " " " " " " " " " Rubicon Nine Tube Super Kit PNF February 1925 BK 9 NIF NIF NIF NIF NIF NIF " " " " " " " " X " " NIF NIF " " " "
" " " (Heteroflex Super) August 1925 BK " " " " John G. Ryan, possible developer " " "
Rubicon - Lewis n / a Modern Super-Heterodyne Type Receiver   1925 CB 8 201A / WD12 & 216A or 202 10 x 30 Rubber Covered Brass 3 NIF NIF NIF Rubicon Short, Fat Cylindrical X 50 NIF NIF Elmer H. lewis, Assoc, I.R.E.        
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
Sampson - Haynes-Griffin Sampson Sampson Dead Spot Receiver X (Summer 1924) CB 7 7 - 201A (7 x 26) 2 1 N (L) Haynes-Griffin Conical X 150 Air Air A. J. Haynes X Sampson    
Sampter Sampter Radio Corporation Selec-Tran Transformers X July 1925 K n / a n / a n / a n / a n / a n / a n / a Sampter Vacuum Tube Shaped X NIF NIF NIF Brooklyn, NY
Samson Samson Electric Co. Super-Kit X September 1924 K / P n / a n / a n / a n / a n / a n / a n / a Samson Cylindrical On Larger Square Base X 60 / 100 / 300 Air Air Professor Bowles, coil developer Canton, Mass.
Samson - Citizens Callbook " " " " " " " Impedance Coupled Super-Heterodyne   March 1927 CB 8 201A, 200A, & 171 8 x 24 2 1 N TL Samson RF Chokes & Condensers   45 Impedence Air " " " " "
Samson - Cotton " " " " " " " Cotton Super-Heterodyne X November 22, 1924 K / B 8 8 - 201A 7 x 28 2 5 N TL Samson Cylindrical On Larger Square Base X 60 Air Air Richard W. "Dick" Cotton " " " " "
Samson - Ghirard n / a Ghirard VIII Super-Heterodyne   April 1926 CB 8 " " " " " " " " " " " " " Alfred A. Ghirard Staten Island, N. Y.
Samson Impedance Coupled n/a N Y Sun Impedance Coupled Super X January 28, 1928 CB 7 2 - 200A & 5 - 199 7 x 18 2 7 1 - MA L 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
Sangamo Sangamo Electric Company Pressley Super Heterodyne Kit   November 1924 K 7 Sangamo Two Shapes - Square & Enclosed Open Frame 66 Air / Iron ?? Air / Iron ?? Captain Jackson H. Pressley Springfield, Ill
" " " " " " " " " " " " Pressley Super-Heterodyne   December 1924 K 7 " " " " " " " " " " " " " " " " Captain Jackson H. Pressley " " " "
" " " " " " " " " " " " Portable Pressley-Sangamo Airplane Type Receiver   April 1925 K 7 " " " " " " " " " " " " " " " " Captain Jackson H. Pressley " " " "
Sangamo - Edwards n / a Captain Edwards' Superheterodyne   November 1924 K / B 7 Sangamo Two Shapes - Square & Enclosed Open Frame 66 Air / Iron ?? Air / Iron ?? Captain Paul S. Edwards Camp Vail, New Jersey
Sangamo - Pressely Rossiter, Tyler, & McDonald ?? Modified Pressley Super-Heterodyne With AC Tubes   February 1928 BK 8 " " " " Captain Paul S. Edwards New York Ciy
Sargent "Flivver" Super-Heterodyne X April 1924 CB 8 Hand-wounds Thick Tuna Can 171 Air Air E. M. Sargent Oakland, CA
Scott Scott Radio Laboratories World's Record Super 9   December 1924 BP 9 n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a E. H. Scott X Chicago
" " " " " " " " " " " World's Record Super 9 X Fall 1925 BOOK 9 9 - 199 (7 x 28) 2 3 (1 - SV) TL Remler Cylindrical X 45 Iron Air E. H. Scott X Chicago
Scott Scott Transformer Co. World's Record Super 9   November 1925 ^^^^^ CK 9 9 - 201A Scott Cylindrical X 45 Iron Air E. H. Scott X Chicago
" " " " " " " " " " World's Record Super 9 Portable ^^   November 1925 ^^ CK 9 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " Improved World's Record Super 9 X October 1926 CK 9 8 - 201A & 1 - 112 7 x 26 2 3 or 4 1 -V & 1 - MA Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " World's Record Super 10   October 1926 CK 10 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " World's Record Super 8   November 1926 CK 8 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " World's Record Super 8   December 1926 CK 8 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " Ideal Model of the World's Record Super 8   March 1927 CK 8 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " World's Record Super 9   March 1927 CK 9 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " Radio Age's World's Record Super 9   May 1927 CK 9 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " World's Record Super 8   September 1927 CK 8 Scott Cylindrical X 45 Iron Air E. H. Scott X " " "
" " " " " " " " " " New World's Record Super 10 X September 1927 CK 10 9 -201A & 1 - 210 7 x 26 2 - Drum 3 1 - V W Scott Tall Retangular X (45) (Iron) Air E. H. Scott X " " "
" " " " " " " " " " World's Record Economy Super Eight   November 1927 CK 8 Scott E. H. Scott X " " "
" " " " " " " " " " Light-Socket Operated World's Record Super 10   December 1927 CK 10 Scott E. H. Scott X " " "
" " " " " " " " " " World's Record Super 10 with Electric Phono Pickup   January 1928 CK 10 Scott E. H. Scott X " " "
" " " " " " " " " " World's Record Shield Grid 9 - All Electric ^^   February 1928 CK Scott E. H. Scott X " " "
" " " " " " " " " " World's Record Shield-Grid Super 9   May 1928 CK 9 Scott E. H. Scott X " " "
" " " " " " " " " " World's Record Shield-Grid Super "A" [AC]   September 1928 ^^ CK 8 [+ 3] Scott E. H. Scott X " " "
" " " " " " " " " " World's Record Shield-Grid Super "B" [DC]   September 1928 CK 8 Scott E. H. Scott X " " "
" " " " " " " " " " World's Record AC 9 ^^   May 1929 ^^ CK 11 ^ Scott E. H. Scott X " " "
" " " " " " " " " " World's Record A. C. Shield-Grid 10   July 1929 ^^ CK 10 Scott 480 Impedance E. H. Scott X " " "
Scott - MS-8 Portable n/a MS-8 Portable X September 1927 BK 8 8 - 201A Drilled & Engraved (6 x 17) 2 3 1 - V L Scott Cylindrical X 45 Iron Air E. H. Scott X (Unknown) " " "
Shepard - Potter Shepard - Potter Corporation Radio Scout "All Wave Tuner" X January 1924 P 1 1 - 201A (7 x 12) 2 2 N W n / a n / a n / a n / a n / a n / a New York City
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
Silver-Marshall with Haynes Griffin n / a Experimental Six Tube Super X March 1924 CB 6 6 - 199 (16 x 12) 2 NIF N NIF Silver Marshall Hand-wound Squares X n / a Air Air McMurdo Silver X     New York
Silver-Marshall Silver-Marshall, Inc. Oscillator Coupler   September 1924 P n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a n / a McMurdo Silver X Chicago
" " " " " " " " " " " Eight Tube Portable Super-Heterodyne   BK 8 8 - 199 Silver Marshall " " " " " " X McMurdo Silver X " " "
" " " " " " " " " " " Eight Tube Portable Super-Heterodyne   October 1924 BK 8 Silver Marshall " " " " " " X McMurdo Silver X " " "
" " " " " " " " " " " Portable Super-Heterodyne   October 1924 BK 7 Silver Marshall " " " " " " X McMurdo Silver X " " "
" " " " " " " " " " " Silver Super-Heterodyne   November 1924 BK 7 Silver Marshall " " " " " " X McMurdo Silver X " " "
" " " " " " " " " " " Silver Super Laboratory   December 1924 BK 7 Silver Marshall " " " " " " X McMurdo Silver X " " "
" " " " " " " " " " " Silver Super Laboratory (201A / WD11 / WD12 Model)   January 1925 BK 7 Silver Marshall " " " " " " X   McMurdo Silver X " " "
" " " " " " " " " " " Two-Ten & Two-Eleven Charted and Matched IF Transformers   February 1925 BK n / a Silver Marshall Aluminum Square X 60 Steel Air McMurdo Silver X " " "
" " " " " " " " " " " Silver Super Laboratory Model Super-Heterodyne   March 1925 BK 7 Silver Marshall Aluminum Square X 60 Steel Air McMurdo Silver X " " "
" " " " " " " " " " " Silver Super Laboratory - Model B   Spring 1925 BK 7 Silver Marshall Aluminum Square X 60 Steel Air McMurdo Silver X " " "
" " " " " " " " " " " Radio World Aluminum IF Super   June 6, 1925 BK Aluminum Square   60 Steel Air McMurdo Silver  
" " " " " " " " " " " Super Autodyne X July 1925 BK 6 6 - 201A or 6 - 199 7 x 18 2 2 N L Silver Marshall Aluminum Square or Misc X 60 Used only two - Steel Air McMurdo Silver X " " "
" " " " " " " " " " " Silver Super-Heterodyne   December 1925 BK Silver Marshall Aluminum Square X 60 Steel Air McMurdo Silver X " " "
" " " " " " " " " " " Improved Silver All Wave Super X January 1926 BK 7 6 -199 & 1 - 120 or 6 - 201A & 1 - 112 7 x 24 1 or 2 3 N L Silver Marshall Misc X 60 Steel Air Ernest R. Pfaff " " "
" " " " " " " " " " " New Model Home or Portable Super   April 1926 BK 7 Silver Marshall McMurdo Silver X " " "
" " " " " " " " " " " 112 K. C. Long Wave Jeweler's Time Signal Amplifier [440]   September 1927 BK n / a Silver Marshall Jewerler's Time Signal Amplifier 440 Module 112 Air Air Ernest R. Pfaff (likely) " " "
" " " " " " " " " " " 112 K. C. Long Wave Jeweler's Time Signal Amplifier [440-SG]   August 1927 BK n / a Silver Marshall Jewerler's Time Signal Amplifier 440 Module 112 Air Air Ernest R. Pfaff, developer of 440SG ^^ " " "
" " " " " " " " " " " Improved Seven Tube Super-Heterodyne   September 1927 BK 7 Silver Marshall (60) (Steel) McMurdo Silver " " "
" " " " " " " " " " " Improved Shielded Laboratory Super-Het X September 1927 BK 8 7 - 201A & 1 - 171 or 112 (7 x 26) 2 - Drum 3 N W Silver Marshall Jewerler's Time Signal Amplifier 440 Module X 112 Air Air Ernest R. Pfaff, developer of 440SG ^^ " " "
" " " " " " " " " " " Improved Shielded Laboratory Model [A-C]   September 1927 BK 8 Silver Marshall " " " " " Ernest R. Pfaff, developer of 440SG ^^ " " "
" " " " " " " " " " " Improved Laboratory Model [A-C]   September 1927 BK 8 Silver Marshall " " " " " Ernest R. Pfaff, developer of 440SG ^^ " " "
" " " " " " " " " " " High Amplification Super-Heterodyne   November 1927 BK Silver Marshall " " "
" " " " " " " " " " " Improved Sscreen Grid Laboratory Model Super-Heterodyne   February 1928 BK 8 Silver Marshall " " "
" " " " " " " " " " " 1929 Screen Grid Nine Tube Laboratory Super (Model 712)   September 1928 BK 9 Silver Marshall Tall Cylindrical 65 " " "
" " " " " " " " " " " Screen Grid Super Nine   March 1929 BK 9 Silver Marshall " " "
" " " " " " " " " " " Model 714 A-C ^   1929 ^ BK 9 ^ Silver Marshall 175 " " "
" " " " " " " " " " " Model 716 A-C ^   (Fall) 1929 ^ BK 10 ^ Silver Marshall " " "
" " " " " " " " " " " Model 724 A-C ^   1929 ^ BK 9 ^ Silver Marshall " " "
" " " " " " " " " " " Model 724 DC ^   1929 ^ BK 8 ^ Silver Marshall " " "
" " " " " " " " " " " Model 726 A-C ^   1929 ^ BK 9 ^ Silver Marshall 175 " " "
" " " " " " " " " " " ("Model 726-SW 25" ???)   1929 BK Silver Marshall " " "
" " " " " " " " " " " Model 726SW A-C ^   (Fall) 1929 ^ BK 11 ^ Silver Marshall eBay " " "
" " " " " " " " " " " Model 727SW A-C ^   1929 ^ BK 9 ^ Silver Marshall " " "
" " " " " " " " " " " Model 782 A-C Midget ^   1929 ^ BK 8 ^ Silver Marshall " " "
Silver Marshall - Adams n / a Adams 1-2-3 X February 11, 1928 CB 7 [+ 2] [+ Power Supply Tubes] 4 - 227, 3 - 226, & 2 - 171 7 x 24 3 3 N W Silver Marshall Jewerler's Time Signal Amplifier 440 Module X 112 Air Air Dana Adams
" " " " " " " " " " Flexible D.C. Superheterodyne   May 1928 CB 7 3 Silver Marshall Jewerler's Time Signal Screen Grid Amplifier 440SG Module 112 Air Air Dana Adams New York City
" " " " " " " " " " Flexible A.C. Superheterodyne   May 1928 CB 7 3 " " " " " Jewerler's Time Signal Screen Grid Amplifier 440SG Module " " " " " Dana Adams " " " " "
Silver-Marshall - Best n / a Best Modified Superheterodyne Shielded Model X (Fall 1925) BK 7 7 - 199 10 x 21 3 2 1 - V W Remler Cylindrical X 45 Iron Air Gerald M. Best X " " " " " " " "
Silver Marshall - Brennan n / a Improved Lab. S.-G. Superheterodyne   June 10, 1928 BK 9 Silver Marshall Jewerler's Time Signal Amplifier 440 Module 112 Air Air John B. Brennan, Jr. New York City
Silver-Marshall - Brush n / a Kodak Size Midget 45 K.C. Best Super X Spring 1925 BK 7 7 - 199 5 3/4 x 11 2 4 1 - V TL or W Silver Marshall (Aluminum Square) X 60 Iron Air Gerald M. Best X W. P. Brush, Designer San Francisco
Silver Marshall - Callies n / a Callies Super-Heterodyne   September 1926 BK 7 Silver-Marshall Misc X 60 Steel Air Charles H. Callies
Silver Marshall - Clough n / a Six-Tube Super-Heterodyne   September 1926 BK 6 Silver Marshall Misc X 60 Steel Air Kendall Clough
Silver Marshall - Fenway Everyman's n / a Fenway Everyman's Receiver X February 1926 BK 9 [4 ******] 9 - 201a 8 X 28 3 2 1 -V & 1 - MA W Silver-Marshall Misc X 60 Steel Air Leo Fenway New York City
Silver Marshall - Fenway Standard n / a Fenway Standard Nine   BK 9 9 - 201a (8 X 28) 3 (4) 1 - MA W (Silver-Marshall) (Misc) (60) (Steel) (Air) Leo Fenway New York City
Silver-Marshall - General Radio n / a Experimental S-M Eight Tube Super X 1924 CB 8 8 - 199 7 x 16 2 2 N W General Radio / Unknown Filter Misc IF / Tuna Can Filter X 33 Iron Air McMurdo Silver X " " "
Silver Marshall - Green n / a Troubleshooting the Super-Het X December 1924 CB 8 8 - 199 or 201A 7 x 28 2 5 N TL Silver Marshall or Receptrad Square or Cylindrical X 50 Iron or Steel Core Possible Honeycomb Coils or Air