• Country
• Japan

• Manufacturer / Brand
• Sony Corporation; Tokyo

• Year
• 1964–1967

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 141342

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

• Number of Transistors
• 8

• Semiconductors
• 2SA70 2SA122 2SC76 2SC76 2SD65 2SD65 2SB383 2SB383 1T23 1T23

• Main principle
• Superheterodyne (common)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Dry Batteries / 6 x 1,5 Volt

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

• Power out
• 1.8 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Super Sensitive Transistor TR-840D - Sony Corporation; Tokyo

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

• Dimensions (WHD)
• 276 x 215 x 90 mm / 10.9 x 8.5 x 3.5 inch

• Notes

• Sony TR-840D is a solid state battery operated 3-band portable receiver.

  Has fine tuning (bandspread capacitor) for SW.
  SW1: 2 ... 6 MHz
  SW2: 6 ... 10 MHz

  See also Sony TR-840DA with additional AC powering option.

• Price in first year of sale
• 51.45 AUS £

• Source of data
• - - Manufacturers Literature

• Mentioned in
• Mingay's Price Service (Feb 1965 to Aug 1967.)

• Literature/Schematics (1)
• J.R. Publications Transistor Radio Service Handbook (Group C3, 1966, Page S39c.)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 3923 models, 3783 with images and 950 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sony Corporation; Tokyo