• Country
• United States of America (USA)

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

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 67919

• • alternative name: Chicago Radio Lab

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

• Number of Tubes
• 7

• Valves / Tubes
• 57 58 57 56 2A6 59 80

• Main principle
• Superheterodyne (common); ZF/IF 485 kHz

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 712 Ch= 2052 - Zenith Radio Corp.; Chicago,

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• Mentioned in
• Machine Age to Jet Age II (page 325.)

• Literature/Schematics (1)
• Cathedral & Tombstone Radios (page 285.)

• 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