• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1970/1971

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 245929

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

• Number of Transistors
• 8

• Semiconductors
• 2SC403 2SC403 2SC402 2SC402 2SB186 2SB186 2SB187 2SB187 1S188

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

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Batteries / addl. power jack / C: 3 x 1,5 / 4,5 Volt

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

• Power out
• 0.5 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 8 Transistor 7R-83 - Sony Corporation; Tokyo

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 240 x 130 x 70 mm / 9.4 x 5.1 x 2.8 inch

• Price in first year of sale
• 74.60 AUS $

• Mentioned in
• Mingay's Price Service (Aug 1970 & Feb 1971.)

• Literature/Schematics (1)
• J.R. Publications Transistor Radio Service Handbook (Group G7, 1970, Page S40-1.)

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

• Other Models

• Here you find 3913 models, 3773 with images and 947 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo