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Columbian Ch= 7D634

Columbian Ch= 7D634; De Forest DeForest (ID = 2239619) Radio
 
Columbian Ch= 7D634; De Forest DeForest (ID = 2239620) Radio
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Columbian Ch= 7D634; De Forest DeForest (ID = 2239619) Radio
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Country:  Canada
Manufacturer / Brand:  De Forest (DeForest) Crosley Radio, Consolidated Industries; Toronto
Year: 1937/1938 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 6: 6A7M 6K7M 75M 6F6M 2X3 2X3
Main principle Super-Heterodyne (Super in general); ZF/IF 456 kHz; 2 AF stage(s)
Tuned circuits 6 AM circuit(s)
Wave bands Broadcast, Short Wave(s) and Police.
Details
Power type and voltage Alternating Current supply (AC) / 115 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Columbian Ch= 7D634 - De Forest DeForest Crosley
Notes This set has pre-set push-button tunning. The Rogers 12-61, 12-66, Majestic 761 and 768 are electronically identical to this model.
Circuit diagram reference Radio College of Canada
Mentioned in RCC Rogers-Majestic section page 32, 33 & Cross Reference

Model page created by Robin Roeckers. See "Data change" for further contributors.



All listed radios etc. from De Forest (DeForest) Crosley Radio, Consolidated Industries; Toronto
Here you find 250 models, 104 with images and 169 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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