• Country
• United States of America (USA)

• Manufacturer / Brand
• Tri-City Radio Supply Co. (Tresco); Davenport, Iowa

• Year
• 1921

• Category
• Radio module pre 1926 (not a part, not a key)

• Radiomuseum.org ID
• 106335

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• Detector with Vacuum Tube (Valve), no tuner; 3 AF stage(s)

• Wave bands
• - without

• Power type and voltage
• Storage and/or dry batteries

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Tresco Detector-Amplifier [Cat.No.33] - Tri-City Radio Supply Co.

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes

• Together with Tuner and Transmitter Part of the "University 1 KW" station. 3-Step Amplifier.

• Net weight (2.2 lb = 1 kg)
• 30 lb (30 lb 0 oz) / 13.620 kg

• Price in first year of sale
• 125.00 $

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 3 (p.189)

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 80 models, 53 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tri-City Radio Supply Co. (Tresco); Davenport, Iowa