Courier TR257

Ace (Brand), Marcus Overton Radio, Ltd., & Ace Radio Ltd.; London

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  • Year
  • 1958 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 127562

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

 Technical Specifications

  • Number of Transistors
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 470 kHz; 3 AF stage(s)
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Dry Batteries / PP1 or PP8: 6 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Power out
  • 0.25 W (unknown quality)
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Courier TR257 - Ace Brand, Marcus Overton
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • A 2 band battery portable transistor radio housed in a wooden case finished in two tone leathercloth, brass trim and a plastic handle. Powered by a PP1 6 volt battery. Elliptical loudspeaker 7 x 4 inches. Sockets underneath for a car aerial, and for connection via a switch to an external longer lasting PP8 battery.

  • Source of data
  • -- Original-techn. papers.
  • Literature/Schematics (1)
  • Practical Wireless July 1958 article
  • Author
  • Model page created by Keith Staines. See "Data change" for further contributors.

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