• Year
  • 1965
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 79477
    • Brand: TRF

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

 Technical Specifications

  • Number of Transistors
  • 9
  • Main principle
  • Superheterodyne (common); ZF/IF 475 kHz
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / PP9: 9 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Power out
  • 0.7 W (unknown quality)
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: Autotwin Mk.II 3140 - Ferguson Brand, Ferguson Radio
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 10 x 6 x 3 inch / 254 x 152 x 76 mm
  • Notes
  • A battery powered portable nine transistor radio covering MW (178.5-566 metres) and LW (1120-2025 metres). Special facilities for operation from a car aerial. The circuit features a stabilizing device to compensate for temperature changes and falling battery voltage. Its dial cursor is lit up. Sockets for car aerial and earphone.

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