• Year
  • 1910 ??
  • Category
  • Miscellaneous (Other, Various) - see notes
  • Radiomuseum.org ID
  • 121352

 Technical Specifications

  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Hearing aid
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Acousticon Hearing Aid SRD - Dictograph Products Co.
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • Hearing aid in leather carrying case.

    It consists of a double carbon microphone, a headset earpiece mounted on a detachable handle, and a battery pack, which was often strapped to the leg. The hearing aid has a six-step volume control.

  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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