• Country
• United States of America (USA)

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

• Year
• 1922

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 106269

• Number of Tubes
• 2

• Valves / Tubes

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Tresco Two-Step Amplifier - Tri-City Radio Supply Co.

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

• Price in first year of sale
• 35.00 $

• Source of data
• Radio Manufacturers of the 1920's, Vol. 3

• 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