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Dublette mit ID=202993

Country:  United States of America (USA)
Manufacturer / Brand:  General Radio Company; Cambridge (MA)
alternative name
Year: 9999 Category: Radio part (not a module) 
Wave bands Wave Bands given in the notes.
Power type and voltage No Power needed
Loudspeaker - - No sound reproduction output.
Power out
from Model: Dublette mit ID=202993 - General Radio Company;
Material Various materials
Notes Filter arbeitet für Wellenlängen zwischen 150 und 500 Metern.
Price in first year of sale 10.00 $
Mentioned in Radio News (January 1925 p1318)

Model page created by Heinz Höger. See "Data change" for further contributors.

All listed radios etc. from General Radio Company; Cambridge (MA)
Here you find 216 models, 197 with images and 84 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.