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Rotary Spark Discharger CW-20

Country:  United States of America (USA)
Manufacturer / Brand:  Karlowa Radio Co., The; Rock Island, Illinois
Year: 1920 ?? Category: Radio module pre 1926 (not a part, not a key)
Wave bands - without
Power type and voltage Solar- and/or muscle driven, also addl. power jack possible
Loudspeaker - - No sound reproduction output.
Power out
from Model: Rotary Spark Discharger CW-20 - Karlowa Radio Co., The; Rock
Material Metal case
Shape Miscellaneous shapes - described under notes.

Rear pulley for separate motor drive. 

Model page created by a member from A. See "Data change" for further contributors.

All listed radios etc. from Karlowa Radio Co., The; Rock Island, Illinois
Here you find 4 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.