• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1962

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 82418

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 7

• Semiconductors
• 2SA122 2SC76 2SC76 2SC65 2SC66 2SC65 2SC65

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 3 AF stage(s)

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

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

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 7 Transistor TR-725 - Sony Corporation; Tokyo

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

• Dimensions (WHD)
• 119 x 66 x 30 mm / 4.7 x 2.6 x 1.2 inch

• Notes

• SW: 3.9 ... 12 MHz

  Case in grey or cream colours. Leather bag was optional.

  Price in US: $39.95

• Price in first year of sale
• 8,800.00 JPY

• Source of data
• -- Schematic

• Mentioned in
• Advertisement on Quattroruote magazine - December 1962

• Author
• Model page created by Alessandro De Poi. See "Data change" for further contributors.

• Other Models

• Here you find 3952 models, 3812 with images and 954 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo