• Country
• Japan

• Manufacturer / Brand
• Showa Tsushinki Mfg. Co., Ltd.; (where?)

• Year
• 1964 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 188685

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

• Number of Transistors
• 6

• Semiconductors
• 2SA53 2SA53 2SB54 2SB54 2SB56 2SB56

• Main principle
• Superheterodyne (common); 3 AF stage(s)

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 9 Volt

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

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: King Six Transistor MT-691 - Showa Tsushinki Mfg. Co., Ltd.

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

• Notes

• See also the similar model King Six Transistor MT-607

  Made in Japan 709

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 20 models, 20 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Showa Tsushinki Mfg. Co., Ltd.; (where?)