• Country
• United States of America (USA)

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

• Year
• 1921

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

• Radiomuseum.org ID
• 221121

• • alternative name: Chicago Radio Lab

• Main principle
• Tuner pre 1926 (not a wave trap)

• Wave bands
• Broadcast (MW) and Long Wave.

• Power type and voltage
• No Power needed

• Loudspeaker
• - - No sound reproduction output.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Z-Nith Regenerator Regenerative Tuner 1921 Model, 180° variocoupler [vario] - Zenith Radio Corp.; Chicago,

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

• Notes
• The 1921 Chicago Radio Labs Z-Nith Regenerator This receiver covered the 180 to 1200 meters wavelength range. This set featured a variocoupler that would rotate 180 degrees compared to the previous model which would only rotate 90 degrees (center dial).

• Price in first year of sale
• 55.00 $

• Literature/Schematics (1)
• July 1921 Pacific Radio News magazine advertisement page 419

• Author
• Model page created by Alan Larsen. 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