• Year
  • 1948/1949
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 233706

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Number of Transistors
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 230 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Special material, described in the notes.
  • from Radiomuseum.org
  • Model: Gulbransen Little Jewel 518N - Cromwell, Gulbransen NZ,
  • Shape
  • Design Radio or Novelty / Gadget - fancy or unusual shape.
  • Dimensions (WHD)
  • 150 x 240 x 150 mm / 5.9 x 9.4 x 5.9 inch
  • Notes
  • Bakelite case with the centre section of brass sheet metal and a carrying handle.

    GULBRANSEN model 518N Bakelite 1948 nicknamed "THE FRIDGE".

    5 Valve (tube) model with Selenium Rectifier RE.3612. 

    Celestion 5" PM speaker equiped with a low resonance cone suspension and high impedance transformer and should only be replaced with the same type.

    Available colors: brown bakelite / finished (painted) white, gray-green, red, metallic green.

    The USA model was the Little Jewel, "Refrigerator",   WESTINGHOUSE H-126

    See also CROMWELL 518N

    Manufactured by Collier & Beale Ltd for H. W. Clarke Ltd who used to import the American Gulbransens until import restrictions were imposed in 1936.

     

  • Net weight (2.2 lb = 1 kg)
  • 3.5 kg / 7 lb 11.3 oz (7.709 lb)
  • Price in first year of sale
  • 21.00 NZ Guineas
  • Mentioned in
  • -- Collector info (Sammler) (Hauraki Plains Gazette 26 November 1948 Page 4)
  • Literature/Schematics (1)
  • RADIO ART by Robert Hawes & The RADIO by David Attwood
  • Literature/Schematics (2)
  • Technical Information & Schematic by Collier & Beale Ltd. Wellington, New Zealand
  • Author
  • Model page created by Bruce Wilkie. See "Data change" for further contributors.

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