• 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)

• Radiomuseum.org ID
• 271172

• Wave bands
• - without

• Power type and voltage
• Solar- and/or muscle driven, also addl. power jack possible

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Rotary Spark Discharger CW-20 - Karlowa Radio Co., The; Rock

• Shape
• Miscellaneous shapes - described under notes.

• Notes

• Rear pulley for separate motor drive. 

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

• Other Models

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