• Year
  • 1952 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 108305

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
  • Power out
  • 0.2 W (unknown quality)
  • from Radiomuseum.org
  • Model: 4-A-40 - Firestone Tire & Rubber Co.
  • Notes
  • Vibrator for +B
    Frequency ranges:
    Broadcast 540 - 1725 kc
    Intermediate 1.8 - 5.8 Mc
    Short Wave 5.8 - 15.5 Mc
    16-13 Meter 17.1 - 22.2 Mc
    19 Meter 14.5 - 17.1 Mc
    25 Meter 11.7 - 12.2 Mc
    31 Meter 9.28 - 9.8 Mc
  • Circuit diagram reference
  • Rider's Perpetual, Volume 20 covering 1950
  • Author
  • Model page created by Egon Penker. See "Data change" for further contributors.

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