radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

Dufferin Ch= 7D731

Dufferin Ch= 7D731; De Forest DeForest (ID = 2239633) Radio
 
Dufferin Ch= 7D731; De Forest DeForest (ID = 2239634) Radio
 
Dufferin Ch= 7D731; De Forest DeForest (ID = 2239635) Radio
Dufferin Ch= 7D731; De Forest DeForest (ID = 1161774) Radio Dufferin Ch= 7D731; De Forest DeForest (ID = 1822558) Radio
Use red slider bar for more.
Dufferin Ch= 7D731; De Forest DeForest (ID = 1161774) Radio
De Forest DeForest: Dufferin Ch= 7D731 [Radio] ID = 1161774 933x610
Select picture or schematic to display from thumbnails on the right and click for download.
For model Dufferin Ch= 7D731, De Forest (DeForest) Crosley Radio, Consolidated Industries; Toronto
 
Country:  Canada
Manufacturer / Brand:  De Forest (DeForest) Crosley Radio, Consolidated Industries; Toronto
Year: 1937/1938 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 6A7M 6K7M 75M 6F6M 6X6 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: Dufferin Ch= 7D731 - De Forest DeForest Crosley
Notes The 6X6 tube is used as a tuning indicator. The Rogers 12-70, 12-75, Majestic 770, De Forest Wellend and Victoria are electronically identical to this set. The Majestic 775 is identical with the exception of an added "Silent Tuning" switch.
Circuit diagram reference Radio College of Canada
Mentioned in RCC Rogers-Majestic section page 31, 30 & Cross Reference
Literature/Schematics (4) Table Top Radios Vol. 4 Stein 2003 (page 74.)

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.




  
rmXorg