• Country
• Japan

• Manufacturer / Brand
• Standard Radio Corp. (SR), Tokyo

• Year
• 1957 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 250529

• Number of Transistors
• 6

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 1 x 9 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Bakelite or Plastics (type unknown)

• from Radiomuseum.org
• Model: SR-F31 - Standard Radio Corp. SR, Tokyo

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Notes

• Une des premières radios standard à transistors.

• Author
• Model page created by Christophe Thevenin. See "Data change" for further contributors.

• Other Models

• Here you find 258 models, 245 with images and 110 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Standard Radio Corp. (SR), Tokyo