• Country
• Japan

• Manufacturer / Brand
• Unknown - CUSTOM BUILT: Japan

• Year
• 1965 ??

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 198119

• Number of Transistors
• 4

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Rec.Player+Audio.Amp+LS

• Power type and voltage
• Line / Batteries (any type) / 110; 125; 160; 220/ 1,5 x ? Volt

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

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

• from Radiomuseum.org
• Model: 4 Transistor Universal Type AC/DC Phonograph OTP-441 - Unknown - CUSTOM BUILT: Japan

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

• Dimensions (WHD)
• 240 x 0 x 290 mm / 9.4 x 0 x 11.4 inch

• Notes
• (Oral?) 4 Transistor Universal Type AC/DC Phonograph OTP-441;
  Four speed, AF out, made in Japan.

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

• Other Models

• Here you find 1140 models, 1002 with images and 96 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Unknown - CUSTOM BUILT: Japan