• Year
  • 1922
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • Radiomuseum.org ID
  • 70573

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Type C Form A [early] - BTH B.T.H., British Thomson-
  • Shape
  • Tablemodel, slant panel.
  • Dimensions (WHD)
  • 11.4 x 8 x 5.2 inch / 290 x 203 x 132 mm
  • Notes
  • BBC/PMG stamp; GPO No.106; Crystal changeover switch permit to select one of two independant crystals; LW-coils available;

    Receivers from the earliest production run have the raised letters "BTH" moulded in the knobs.

  • Net weight (2.2 lb = 1 kg)
  • 2.7 kg / 5 lb 15.2 oz (5.947 lb)
  • External source of data
  • Konrad Birkner

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The model Type C Form A is part of the collections of the following members.

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