• Year
  • 1937
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 206183

 Technical Specifications

  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • -Loudspeaker incorporated, but system not known.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Duo-Matic Intercommunicator - Dictograph Products Co.
  • Shape
  • Tablemodel, low profile (big size).
  • Notes
  • Duo-Matic Intercommunicator; high gain pickup; operates on dry cells for a period of 8 to 12 months; duplex conversation; uses no current when not in actual operation; complete in attractive wooden case with convenient switch for operation.

    The advertisement shows "Dictagraph" which is a misspelling of the well known Dictograph brand and company name.

  • Author
  • Model page created by Heiko zur Mühlen. See "Data change" for further contributors.

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