• Year
  • 1924 ??
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 331129

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - Is a Headphone or Earphone
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Headphones [4,000 ohms] - BTH B.T.H., British Thomson-
  • Notes
  • BTH headphones metal case 2,000 + 2,000 ohms earphones in series

  • Mentioned in
  • -- Collector info (Sammler) (Own collection)
  • Author
  • Model page created by Lindsay Shepherd. See "Data change" for further contributors.

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Collections

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

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