Detector

Marconi's Wireless Telegraph Co. Ltd.

Data
Forum
Pictures
Collections

  • Year
  • 1906 ??
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • Radiomuseum.org ID
  • 364724

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Detector - Marconi's Wireless Telegraph
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 5 x 3.75 x 2.25 inch / 127 x 95 x 57 mm
  • Notes

  • This was possibly used in the Marconi laboratories to experiment with crystal detectors.  This looks like a hybrid of a Carborundum and Pyrite detector.  It has a ball bearing globe adjustment and a micrometer adjustment for the pressure on the crystal.  Since Marconi's Wireless Telegraphy was using Carborundum detectors in their Newfoundland, Canada, to Clifton, Ireland stations in 1907, I believe this predates that.  (History of Telegraphy, Ken Beauchamp 2001).  

    The detector is described as a hybrid of a Carborundum and Pyrite detector, indicating it likely used two different materials known for their rectifying properties:

    • Carborundum (Silicon Carbide): Known for its stability and relatively low-voltage operation.
    • Pyrite (Iron Pyrite, or Fool's Gold): An early, common crystal detector material.
  • Author
  • Model page created by David Smith. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Detector is part of the collections of the following members.

 Forum