• Year
  • 1967
  • Category
  • Commercial Receiver (may include amateur bands)
  • Radiomuseum.org ID
  • 89299

 Technical Specifications

  • Number of Transistors
  • Semiconductors present.
  • Semiconductors
  • Main principle
  • Superheterodyne (common)
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Alternating Current supply (AC) / 115/230 Volt
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 521A-3 - Watkins Johnson Company,
  • Shape
  • Rack
  • Dimensions (WHD)
  • 19 x 3.5 x 18 inch / 483 x 89 x 457 mm
  • Notes
  • sw / vhf receiver, coverage 20 - 80 MHz, FM, AM, CW (BFO);
    tuned via steel tape dial;
    features internal panoramic display, sweep width 300 kHz;
    in same rack with DRO-290A-1 digital frequency readout with nixie tubes.
    Swiss Military model number E-649.
  • Source of data
  • - - Data from my own collection
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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