Junior Corder RSR-321

Unknown - CUSTOM BUILT: Japan

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  • Year
  • 1960 ??
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 304513

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

 Technical Specifications

  • Number of Transistors
  • 3
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Tape Recorder
  • Power type and voltage
  • Dry Batteries / 9; 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 2.5 inch = 6.4 cm
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: Junior Corder RSR-321 - Unknown - CUSTOM BUILT: Japan
  • Dimensions (WHD)
  • 246 x 60 x 125 mm / 9.7 x 2.4 x 4.9 inch
  • Notes

  • A childs tape recorder, half track, approximate speed is 3.75 ips, spool size 3 inches.

    Motor tilts so double ended spindle engages on the rim of either the take up spool or the rewind spool. Rewind speed slightly faster than play, by virtue of larger diameter motor shaft. Record uses DC bias and permanent magnet erase.
    Supplied with crystal microphone and personal earpiece, 3 inch spool of tape and spare take up spool.

    Uses PP3 9v battery for amplifier & 2 x 1.5v C cells for motor wired in parallel. The tape spools are marked "Sychrotape".

  • Net weight (2.2 lb = 1 kg)
  • 1.2 kg / 2 lb 10.3 oz (2.643 lb)

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