Crystal Receiver Type No. 20

Marconi's Wireless Telegraph Co. Ltd.

  • Year
  • 1912 ??
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • ID
  • 326270

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

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Material
  • Wooden case
  • from
  • Model: Crystal Receiver Type No. 20 - Marconi's Wireless Telegraph
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • Receiver utilizing single carborundum crystal. A potentiometer allows for adjustment of the the detector voltage. The set requires high resistance headphones.

    The No. 20 receiver is associated with the Marconi 1 1/2kW shipboard spark station. The multiple tuner of the station would be used either with the magnetic detector, or with the crystal receiver.

  • Mentioned in
  • Hawkhead: Handbook of Technical Instruction for Wireless Telegraphists, 2nd ed. (1915)
  • Author
  • Model page created by Nikolaus Löwe. See "Data change" for further contributors.

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