272

Vidor Ltd.; Erith (Kent)

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  • Year
  • 1937
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 201107

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 1 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 108 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Leather / canvas / plastic - over other material
  • from Radiomuseum.org
  • Model: 272 - Vidor Ltd.; Erith Kent
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Notes

  • May also be referred to as CN272, later the "Cat. No." prefix of all Vidor models is reduced to CN.

    Portable battery receiver in a black leatherette suitcase style case with the loudspeaker in the lid. Same chassis as the Burndept 274. Volume is adjusted using the reaction control.

    Batteries: The lead acid 2V  LT is a 16AH Gel type to avoid spills. The grid bias is tapped  on the HT pack (Vidor 17872, tapped at least 1.5, 3, 72 &108V), with GB2 going to 0V (blue), GB1 to 1.5V (yellow), HT- to 3V (black), HT1 to 72V (green) and HT2 to 108V (red), physically the same size as Winner 108 (but not same connections).

    Unusally for a Vidor TRF, both RF valves/Tubes are Hexodes. The output pentode is the later 5 pin version, there is an earlier 4 pin plus side terminal type. Another rare feature for a battery set of this era is the scale lamp separately switched, 2.6V @ 300mA..The frame aerial is in the lid and tuned.

     

  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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