• Year
  • 1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 72061
    • alternative name: Chicago Radio Lab

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz
  • Wave bands
  • Broadcast, Short Wave(s) and Police.
  • Power type and voltage
  • Alternating Current supply (AC) / 115 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 7S450 5719 - Zenith Radio Corp.; Chicago,
  • Shape
  • Console: Chairside Radio.
  • Dimensions (WHD)
  • 0 x 21 x 0 inch / 0 x 533 x 0 mm
  • Notes
  • Pushbuttons. The Zenith model 7S450 was made in two different versions regarding power supply. Please select the right model page - either mains transformer or voltage doubler for a change or upload etc. The variant is given on both models accordingly. Here a voltage doubler is employed for +B supply.
  • Price in first year of sale
  • 70.00 $
  • Circuit diagram reference
  • Rider's Perpetual, Volume 11 = ca. 1940 and before

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