• Country
• United States of America (USA)

• Manufacturer / Brand
• Zenith Radio Corp.; Chicago, IL

• Year
• 1924

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 74338

• • alternative name: Chicago Radio Lab

• Number of Tubes
• 3

• Valves / Tubes
• UV201A UV201A UV201A

• Main principle
• Audio-Amplification

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 3M 3-M - Zenith Radio Corp.; Chicago,

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

• Price in first year of sale
• 75.00 $

• Mentioned in
• Zenith Radio The Early Years 1919-1935

• Literature/Schematics (1)
• 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 4496 models, 4101 with images and 3615 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL