Transistor Rhapsody OP21A

Kolster Brandes Ltd. (KB, K.B., ITT); Foots Cray; GB

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  • Year
  • 1958
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 104763

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

 Technical Specifications

  • Number of Transistors
  • 6
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Dry Batteries / 9 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Bakelite or Plastics (type unknown)
  • from Radiomuseum.org
  • Model: Transistor Rhapsody OP21A - Kolster Brandes Ltd. KB, K.B.,
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • KB service note;
    The models OP21A & PP31A are similar to the OP21 & PP31 but fitted with Car aerial socket with additional winding on ferrite rod. Incidentally, this rod aerial assembly was used as a replacement item for all four models, the car aerial winding should be left disconnected when used in OP21 and PP31.

  • Mentioned in
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • Trader sheet 1386
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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