3 Tube Pocket Radio Rodio PM-20

Sanyo Electric Co. Ltd.; Moriguchi (Osaka)

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  • Year
  • 1955 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 356552

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Superheterodyne (common); ZF/IF 455 kHz; 1 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Dry Batteries / C: 1 x 1.5 & 1 x 45 Volt
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: 3 Tube Pocket Radio Rodio PM-20 - Sanyo Electric Co. Ltd.;
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 5.5 x 3.25 x 1.25 inch / 140 x 83 x 32 mm
  • Notes

  • The Sanyo 3 Tube Pocket Radio (misprint Rodio at the schematic inside of the back cover) is a three tube battery operated MW band superheterodyne receiver. Partially built with printed circuit board. No built-in speaker. Jack for high impedance earphone, usually a crystal earphone.

    Batteries required:

    • "A" 1.5 V (UM-2)
    • "B" 45 V (BL-030L)

    See also the similarly constructed National Pocket Super 3B-267

  • Author
  • Model page created by Aldo Andreani. See "Data change" for further contributors.

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