• Year
  • 1929
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 235455

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • TRF with regeneration; 3 AF stage(s); Anode bend detection
  • Tuned circuits
  • 2 AM circuit(s)
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Orgola Senior - Mullard Wireless, London see
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • Replaces earlier Raleigh model.

    A typical Kit TRF Radio of the "SG Det Pen" type (i.e. Screen Grid (Tetrode) RF, Triode detector and Pentode audio output) of late 1920s / early 1930s with driver and push pull output added for more volume.

    Gram/P.U. Selection option.

    Power

    1. Filament/L.T.: The alternate valves/tubes are for 2V, 4V or 6V Accumulator. 30AH Exide recommended.
    2. Grid Bias: 2 x 12V G3 Siemens recommended, 3 different bias voltages from 1.5V to 22.5V
    3. HT: 3 x 50V Siemens 1035. 3  different HT voltages.

    There is an A.C. Mains version using Indirect valves/tubes, Orgola A.C. and also the basic  Orgola.

    There is a wind up gramophone and cabinet option, Orgola Radio Gramophone.

  • Mentioned in
  • - - Manufacturers Literature (Radio for the Million Vol. 4 No.1 September 1929)
  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

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