3R Long Distance Receiver-Amplifier late

• Country
• United States of America (USA)

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

• Year
• 1923

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 67445

• • alternative name: Chicago Radio Lab

• Picture
• Schematics

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

• Number of Tubes
• 4

• Valves / Tubes

• Main principle
• TRF with regeneration

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 3R Long Distance Receiver-Amplifier [late] - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, slant panel.

• Notes
• Has no porthole in the front panel. (the early version has one).

• Price in first year of sale
• 175.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Radio Manufacturers of the 1920's, Vol. 3

• Literature/Schematics (1)
• Zenith Radio The Early Years 1919-1935

• Literature/Schematics (2)
• Radio Broadcast, Jun. 1924, p. 185

• Other Models

• Here you find 4505 models, 4101 with images and 3631 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Zenith Radio Corp.; Chicago, IL