Radio-Craft Radiophone D-4 Portable Model

DeForest Radio Telephone & Telegraph Co. (De Forest); New York

  • Year
  • 1922
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 205389
    • alternative name: Lee De Forest Mfg.

 Technical Specifications

  • Number of Tubes
  • 1
  • Valves / Tubes
  • Main principle
  • TRF with regeneration
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Radio-Craft Radiophone D-4 [Portable Model] - DeForest Radio Telephone &
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes
  • Radio-Craft Radiophone D-4 Portable 1-Tube regenerative receiver. This was a boxed set with a lid with carrying handle. Radio-Craft also built this model in a table model version the D-4R.
  • Author
  • Model page created by Alan Larsen. See "Data change" for further contributors.

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