• Country
• Japan

• Manufacturer / Brand
• Standard Radio Corp. (SR), Tokyo

• Year
• 1968 ?

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 132182

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

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Tape Recorder

• Power type and voltage
• Line / Batteries (any type) / 230 / 5 × 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9 cm = 3.5 inch

• Power out
• 1.5 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: SR-250 - Standard Radio Corp. SR, Tokyo

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

• Dimensions (WHD)
• 235 x 140 x 80 mm / 9.3 x 5.5 x 3.1 inch

• Notes
• Bandes de 60 mm de diamètre - vitesse 4,75 et 9,5 cm/sec. 2 speed, 2 track.

• Net weight (2.2 lb = 1 kg)
• 2.2 kg / 4 lb 13.5 oz (4.846 lb)

• Source of data
• - - Data from my own collection

• Literature/Schematics (1)
• Radio And Television Servicing books (R&TVS)

• Author
• Model page created by Roger Bertin. See "Data change" for further contributors.

• Other Models

• Here you find 258 models, 245 with images and 110 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Standard Radio Corp. (SR), Tokyo