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RJ-7

RJ-7 ; DeForest Radio (ID = 914055) Radio RJ-7 ; DeForest Radio (ID = 914056) Radio
RJ-7 ; DeForest Radio (ID = 914057) Radio RJ-7 ; DeForest Radio (ID = 914058) Radio
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RJ-7 ; DeForest Radio (ID = 914055) Radio
DeForest Radio: RJ-7 [Radio] ID = 914055 933x438
Select picture or schematic to display from thumbnails on the right and click for download.
For model RJ-7, DeForest Radio Telephone & Telegraph Co. (De Forest); New York
 
Country:  United States of America (USA)
Manufacturer / Brand:  DeForest Radio Telephone & Telegraph Co. (De Forest); New York
alternative name
 
Lee De Forest Mfg.
Year: 1916/1917 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 2: Audion_dbw Audion_dbw
Main principle TRF (Tuned-Radio-Frequency but use of regeneration unknown)
Tuned circuits 1 AM circuit(s)
Wave bands Broadcast (MW) and Long Wave.
Details
Power type and voltage Storage and/or dry batteries
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: RJ-7 - DeForest Radio Telephone &
Material Wooden case, TUBES VISIBLE.
Shape Tablemodel, Box - most often with Lid (NOT slant panel).
Notes tuner + amplifier.
Price in first year of sale 200.00 $
Mentioned in De Forest catalog B16
Literature/Schematics (1) Radio Manufacturers of the 1920s, Vol 1 (p.164)

Model page created by Alan Scott Douglas † 16.11.15. See "Data change" for further contributors.



All listed radios etc. from DeForest Radio Telephone & Telegraph Co. (De Forest); New York
Here you find 138 models, 108 with images and 10 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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