• Country
• Japan

• Manufacturer / Brand
• Toyo Radio Co., Ltd.; Tokyo

• Year
• 1971 ?

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 339496

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Quadio 4-Channel Cartridge Auto System CS-721 - Toyo Radio Co., Ltd.; Tokyo

• Shape
• Chassis only or for «building in»

• Notes

• 4-Channel Cartridge Auto System. Compatible with 2-channel tape cartridges.

• Mentioned in
• -- Original prospect or advert (Billboard (magazine), Feb. 6, 1971, page 17)

• Author
• Model page created by David Erali. See "Data change" for further contributors.

• Other Models

• Here you find 17 models, 17 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Toyo Radio Co., Ltd.; Tokyo