• Country
• Japan

• Manufacturer / Brand
• Koyo Denki Co. Ltd.; Kodaira, Tokyo

• Year
• 1963 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 244944

• Number of Transistors
• 8

• Semiconductors

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

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Dry Batteries / 4 x 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 cm = 2 inch

• Power out
• 0.3 W (0.4 W max.)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 8 Transistor 2 Band KTR-837 - Koyo Denki Co. Ltd.; Kodaira,

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

• Dimensions (WHD)
• 170 x 95 x 45 mm / 6.7 x 3.7 x 1.8 inch

• Notes

• SW: 3.9 - 12 MHz.

  Made in Japan 403

   

• Net weight (2.2 lb = 1 kg)
• 0.550 kg / 1 lb 3.4 oz (1.211 lb)

• Price in first year of sale
• 900.00 PTE

• Author
• Model page created by Manuel Albano Neves. See "Data change" for further contributors.

• Other Models

• Here you find 55 models, 51 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Koyo Denki Co. Ltd.; Kodaira, Tokyo