The Countryman CN424

Vidor Ltd.; Erith (Kent)

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  • Year
  • 1954
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 101725

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Dry Batteries / 1.5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: The Countryman CN424 - Vidor Ltd.; Erith Kent
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • The 1954 UK Radio show catalogue: "A battery operated table model designed especially for those who live 'beyond the Grid'".

    Basically the CN421 cabinet (restyled) and the CN421 chassis using parallel filament wiring with mains PSU parts omitted. Using 25mA rather than 50mA tubes, though even the similar but later battery/mains CN427 and battery/mains CN431 still used 50mA tubes (also similar chassis, but different tuning scale). The battery / mains versions probably have higher audio output power.

    The batteries may last over 200 hours, L5041 high capacity LT pack and L5039 high capacity HT pack.

    Frame / loop aerial with external aerial/earth sockets for poor reception areas.

  • Source of data
  • -- Original-techn. papers.
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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