• Country
• Japan

• Manufacturer / Brand
• Sharp; Osaka

• Year
• 1970 ??

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 220642

• • alternative name: Hayakawa Electric Co.Ltd.

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Line / Batteries (any type) / 120/ 6x 1,5 Volt

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

• Power out
• 1 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Solid State Tape Recorder RDN-504 Ch= RD 504 [120 Volt] - Sharp; Osaka

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

• Dimensions (WHD)
• 300 x 89 x 274 mm / 11.8 x 3.5 x 10.8 inch

• Notes
• AC nur 120 Volt 60 Hz

• Net weight (2.2 lb = 1 kg)
• 3.5 kg / 7 lb 11.3 oz (7.709 lb)

• Mentioned in
• Sharp Service Unterlagen

• Author
• Model page created by Josef Pilz. 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