• Country
• Japan

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

• Year
• 1973 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 225067

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Superheterodyne (common)

• Wave bands
• Broadcast (BC) and FM or UHF.

• Power type and voltage
• Line / Batteries (any type) / 220 / 4 x 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: KTR-1391 - Koyo Denki Co. Ltd.; Kodaira,

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

• Dimensions (WHD)
• 245 x 150 x 80 mm / 9.6 x 5.9 x 3.1 inch

• Notes

• Timer with spring winding.

• Net weight (2.2 lb = 1 kg)
• 1.2 kg / 2 lb 10.3 oz (2.643 lb)

• Author
• Model page created by Gil Silva. See "Data change" for further contributors.

• Other Models

• Here you find 55 models, 51 with images and 8 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Koyo Denki Co. Ltd.; Kodaira, Tokyo