• Year
  • 1923
  • Category
  • Detector-Radio (Crystal or diode, without tubes/transistors)
  • Radiomuseum.org ID
  • 46829

 Technical Specifications

  • Main principle
  • Crystal or Solid State Detector
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Big 4 - Martian Manufacturing Co. Inc.
  • Dimensions (WHD)
  • 140 x 220 x 140 mm / 5.5 x 8.7 x 5.5 inch
  • Notes
  • one or two tuning sliders (ball on coiled spring); Lit.: M.L.Sievers: "Crystal Clear" vol.1, p.72

  • Price in first year of sale
  • 7.00 $
  • External source of data
  • Ernst Erb

 Collections | Museums | Literature

Collections

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

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