• Country
• United States of America (USA)

• Manufacturer / Brand
• Thordarson Electric Mfg. Co. ; Chicago (IL)

• Year
• 1939

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 183710

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

• Number of Tubes
• 7

• Valves / Tubes
• 6J7 6J7 6J7 6C5 6L6 6L6 5Z3

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110-120 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 20 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: T-20W25 - Thordarson Electric Mfg. Co. ;

• Shape
• Chassis only or for «building in»

• Price in first year of sale
• 75.00 USD

• Literature/Schematics (1)
• Radio Retailing (Radio & Television R.) (May 1939 page 40)

• Author
• Model page created by Hannes Gerber. See "Data change" for further contributors.

• Other Models

• Here you find 65 models, 53 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Thordarson Electric Mfg. Co. ; Chicago (IL)