Solid State Six Transistor 4R-57

Sony Corporation; Tokyo

  • Year
  • 1968 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 241821

 Technical Specifications

  • Number of Transistors
  • 6
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / D: 2 x 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Solid State Six Transistor 4R-57 - Sony Corporation; Tokyo
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 180 x 90 x 45 mm / 7.1 x 3.5 x 1.8 inch
  • Notes
  • MW 530 - 1605 kHz.

    Also manufactured in licence by Continental SACIF for Sony in Argentina, see model 4R-57.

  • Author
  • Model page created by Clive Forder. See "Data change" for further contributors.

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