• Country
• Japan

• Manufacturer / Brand
• Sharp; Osaka

• Year
• 1981 ?

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 159369

• • alternative name: Hayakawa Electric Co.Ltd.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Cassette-Recorder or -Player

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Optonica RT-W7 - Sharp; Osaka

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 430 x 110 x 320 mm / 16.9 x 4.3 x 12.6 inch

• Notes
• Frontloading Stereo Double Cassette Deck with Dolby. 20 - 22.000 Hz, 0,045% WRMS.
  APSS, Digital Peak Reading Meters.

• Net weight (2.2 lb = 1 kg)
• 7.4 kg / 16 lb 4.8 oz (16.3 lb)

• Price in first year of sale
• 69,800.00 JPY

• Author
• Model page created by Franz Scharner. See "Data change" for further contributors.

• Other Models

• Here you find 1328 models, 1200 with images and 515 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sharp; Osaka