• Year
  • 1925–1927
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 72941
    • alternative name: Gravor

 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: Hallophon 1925 - Grawor, Rundf.techn.Erz. Grass
  • Price in first year of sale
  • 35.00 Mk
  • Source of data
  • Radiokatalog Band 2, Ernst Erb
  • Mentioned in
  • Katalog Radio-Bauer 1927
  • Author
  • Model page created by Wolfgang Eckardt. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

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

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