• Year
  • 1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 74124
    • alternative name: Chicago Radio Lab

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

 Technical Specifications

  • Number of Tubes
  • 12
  • Main principle
  • Superhet with RF-stage; ZF/IF 456 kHz
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Details
  • Record Player (perh.Changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 12-S-374 Ch=1204 - Zenith Radio Corp.; Chicago,
  • Shape
  • Console with Push Buttons.
  • Notes
  • The schematic diagram got corrections (red). These lines are already missing in the Zenith drawing as well as in Riders and in Beitman. Model produced ?
  • Circuit diagram reference
  • Rider's Perpetual, Volume 8 = 1937 and before

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