Loud Speaking Telephone D Form C

BTH (B.T.H.), British Thomson-Houston Co, Ltd.

  • Year
  • 1924
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 104406

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • Horn / Ø 9.25 inch = 23.5 cm
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Loud Speaking Telephone D [Form C] - BTH B.T.H., British Thomson-
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 18 x 9.25 x 0 inch / 457 x 235 x 0 mm
  • Notes
  • Electro-dynamic driver!

    Cast metal base, brown-enamelled metal horn.

  • Price in first year of sale
  • 12.10 £
  • Literature/Schematics (1)
  • Advert in Modern Wireless, Sept.1924, p.438
  • Author
  • Model page created by Jean-Luc Comblin. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Loud Speaking Telephone is part of the collections of the following members.

 Forum