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R475 Crystal Receiver old

Country:  United States of America (USA)
Manufacturer / Brand:  Gilfillan Bros.Inc.; Los Angeles (CA)
Year: 1923 Category: Detector-Radio (Crystal or diode, without tubes/transistors)
Main principle Crystal or Solid State Detector
Details
Power type and voltage No Power needed
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: R475 Crystal Receiver [old] - Gilfillan Bros.Inc.; Los
Notes One dial (primary tuning control knob)
Price in first year of sale 5.00 $
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932


All listed radios etc. from Gilfillan Bros.Inc.; Los Angeles (CA)
Here you find 184 models, 111 with images and 128 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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