• Year
  • 1922/1923
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 229224

 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: Dictograph Radio Head Set / Headset R-1 - Dictograph Products Co.
  • Shape
  • Miscellaneous shapes - described under notes.
  • Notes
  • 3000 Ohms resistance.

    Introduced in 1922 as Dictograph Radio Head Set, later sold as Dictograph Headset R-1 for a price of $8.

  • Price in first year of sale
  • 12.00 USD
  • Literature/Schematics (1)
  • Popular Science, Nov. 1922

 Collections | Museums | Literature

Collections

The model Dictograph Radio Head Set / Headset is part of the collections of the following members.

 Forum