• Country
• United States of America (USA)

• Manufacturer / Brand
• Turner Co. (The); Cedar Rapids (IA)

• Year
• 1933 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 63748

• • Brand: Colortone

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Audio-Amplification

• Wave bands
• - without

• from Radiomuseum.org
• Model: Crystal Mic Amplifier - Turner Co. The; Cedar Rapids

• Notes
• Crystal microphone amplifier.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 5 = ca. 1934 and before

• Other Models

• Here you find 74 models, 55 with images and 21 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Turner Co. (The); Cedar Rapids (IA)