Solar Radio 257 P-E

Acopian Technical Co.

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  • Year
  • 1957
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 112503

 Technical Specifications

  • Number of Transistors
  • 1
  • Semiconductors
  • Main principle
  • Crystal or Solid State Detector with Amplifer
  • Tuned circuits
  • 1 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Solar- and/or muscle driven, also addl. power jack possible
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Solar Radio 257 P-E - Acopian Technical Co.
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 3 x 2 x 0.75 inch / 76 x 51 x 19 mm
  • Notes
  • The Acopian Solar Radio 257 P-E was built from April 1957, being the first solar driven radio. With it's measurements of 3 x 3 x .75 inch it is very small too. See also company history. It uses a Germanium Diode and one Transistor. Acopian calls the ferrite antenna a "Loopstick High-Q", Omni-directional Ferrit-loopstick
  • Price in first year of sale
  • 12.00 $
  • Mentioned in
  • -- Original-techn. papers.
  Solar Radio History 2935 KB
  • Documents regarding this model
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

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