1643 ATR-904

Sharp; Osaka

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  • Year
  • 1964–1966
  • Category
  • Car Radio, perhaps also + sound player/recorder
  • Radiomuseum.org ID
  • 316220
    • alternative name: Hayakawa Electric Co.Ltd.

 Technical Specifications

  • Number of Transistors
  • 9
  • Semiconductors
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 1643 ATR-904 - Sharp; Osaka
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 6.25 x 2 x 7.875 inch / 159 x 51 x 200 mm
  • Notes

  • Sharp Model ATR904

       Tuning is simplified by a power operated selector bar. DX local transfer switch giving long range reception for country areas. Negative feedback circuit eliminates tone distortion. All-metal shockproof cabinet.
       Specifications: nine transistor one band superheterodyne system and RF amplifier. Tuning range, 530 - 1605 kC/s (kHz). Intermediate frequency, 455 kC/s (kHz). Output 2½ watts maximum, 1.7 watts undistorted. Power source 12 volt car battery. Speaker 6" x 4" oval PDS type.
       Speaker box dimensions: 2⅝" x 7⅝" x 5⅛"

    Transistor types not mentioned in the schematic.

    This model sold in Australia between 1964 & 1966 for £66/3/-.

  • Author
  • Model page created by Martin Kent. See "Data change" for further contributors.

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