FM/AM Digital Clock Radio RD-500

Copal Co., Ltd.; Tokyo

  • Year
  • 1971 ??
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 249578

 Technical Specifications

  • Number of Transistors
  • 10
  • Semiconductors
  • Main principle
  • Superheterodyne (common); ZF/IF 455/10700 kHz
  • Wave bands
  • Broadcast (BC) and FM or UHF.
  • Power type and voltage
  • Alternating Current supply (AC) / 240 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3 inch = 7.6 cm
  • Power out
  • 0.35 W (0.6 W max.)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: FM/AM Digital Clock Radio RD-500 - Copal Co., Ltd.; Tokyo
  • Shape
  • Tablemodel with Clock ((Alarm-) Clock Radio).
  • Dimensions (WHD)
  • 11 x 3.375 x 5.375 inch / 279 x 86 x 137 mm
  • Notes
  • Frequency Range:
    AM 535 - 1605 kHz
    FM 88-108 MHz
    Sensitivity:
    AM Better than 400 µV/m at 1,000 kHz
    FM Better than 20 µV/m at 98 MHz
    S/N Ratio:
    AM Not less than 26 dB
    FM Not less than 30 dB
    Antenna:
    AM Ferrite Bar Antenna
    FM Power Line Antenna
    Clock Movement: Drop-leaf type
    Dimensions: 11" (W) x 5-3/8" (D) x 3-3/8" (H)
    7-diodes & 2 rectifiers.

  • Net weight (2.2 lb = 1 kg)
  • 1.4 kg / 3 lb 1.3 oz (3.084 lb)
  • Mentioned in
  • - - Manufacturers Literature
  • Author
  • Model page created by Walter Much. See "Data change" for further contributors.

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