• Year
  • 1923
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 97673

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Horn / Ø 35.5 cm = 14 inch
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Form C2 - BTH B.T.H., British Thomson-
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 0 x 590 x 0 mm / 0 x 23.2 x 0 inch
  • Notes
  • B.T.H. Type C2, Aluminium swan-neck, brown-painted aluminium flare, brown bakelite base and drive unit, 23" high, 14" diameter flaire, Price 5£ 5s.
    Over 1 million were sold and they were still being advertised in 1930 (Jonathan Hill: Radio, Radio, 1996). coil resistance 2000 Ohm

  • Price in first year of sale
  • 5.50 £
  • Mentioned in
  • J. Hill: Radio, Radio, 1996
  • Literature/Schematics (1)
  • F.A. Paul: Radio Horn Speaker Encyclopedia, 1986
  • Literature/Schematics (2)
  • Advert in Modern Wireless, Sept.1924, p.438
  • Author
  • Model page created by a member from D. See "Data change" for further contributors.

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