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312 var. 1

312 ; Patterson Radio Corp (ID = 646540) Radio
312 ; Patterson Radio Corp (ID = 541359) Radio 312 ; Patterson Radio Corp (ID = 722962) Radio
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312 ; Patterson Radio Corp (ID = 541359) Radio
Patterson Radio Corp: 312 [Radio] ID = 541359 523x616
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For model 312 var. 1, Patterson Radio Corp.; Los Angeles:
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Country:  United States of America (USA)
Manufacturer / Brand:  Patterson Radio Corp.; Los Angeles
Year: 1938 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 12: 6K7 6A8 6K6 6K7 6E5 6K7 6J7 6C5 6Q7 6V6 6V6 5Y3
Main principle Superhet with RF-stage; ZF/IF 465 kHz; 2 AF stage(s)
Tuned circuits 9 AM circuit(s)
Wave bands Broadcast plus more than 2 Short Wave bands.
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Model: 312 [var. 1] - Patterson Radio Corp.; Los
Material Wooden case
Shape Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

Covers 550 kHz to 18.0 MHz in 4 bands. Tuning eye, BFO. Push-pull audio amplifier.

Stein "Machine Age to J.Vol.2" and "Cathedral & Tombsone Radios" shows different pictures. Please see Model "312 var. 2".

External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 9 = 1938 and before
Mentioned in Rider's 9-4, 9-5, 9-6
Literature/Schematics (1) Machine Age to Jet Age II
Literature/Schematics (2) Cathedral & Tombstone Radios (page 189.)

All listed radios etc. from Patterson Radio Corp.; Los Angeles
Here you find 111 models, 43 with images and 66 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.


Forum contributions about this model
Patterson Radio Corp: 312
Threads: 1 | Posts: 2
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patters-ra: 312 - Tube 6K4
Emilio Ciardiello

Please check the tube line up of this model. The US 6K4 linked to the model was a subminiature triode registered in the late 1945.

Many thanks,


Emilio Ciardiello

We can remove the question mark from this thread. The solution was found by Achim Korn. The mistery tube seems to be a 6K6, also used in other models of the same manufacturer.

Many thanks to all.


Patterson Radio Corp: 312
End of forum contributions about this model