• Year
  • 1931/1932
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 74354
    • alternative name: Chicago Radio Lab

 Technical Specifications

  • Number of Tubes
  • 8
  • Valves / Tubes
  • Main principle
  • Superhet with RF-stage; ZF/IF 175 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: Portola - Zenith Radio Corp.; Chicago,
  • Shape
  • Console with any shape - in general
  • Notes
  • little known end table style set made by Sentinel(United Air Cleaners 106B);
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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