• Country
• Japan

• Manufacturer / Brand
• Kosth Measuring Instrument Co. Ltd.; Tokyo

• Year
• 1955 ??

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 160585

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Wire Recorder (or -Player)

• Power type and voltage
• Dry Batteries / 4 x 1.5 Volt

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

• Material
• Metal case

• from Radiomuseum.org
• Model: QR-101 - Kosth Measuring Instrument Co.

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

• Notes
• The Wire recorder QR-101 from Kosth Meaduring Instrument Co. Ltd. in Tokyo seems to be something like a very early Walkman - perhaps with miniature tubes - or is it transistorized?

• External source of data
• John Lawst, Sacramento, USA

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Kosth Measuring Instrument Co. Ltd.; Tokyo