• Year
  • 1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 78147

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superheterodyne (common); ZF/IF 117 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Alternating Current supply (AC) / 200-250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: A4 - Murphy Radio Ltd.; Welwyn
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 15 x 17.5 x 10 inch / 381 x 445 x 254 mm
  • Notes
  • 4-valve, AC-powered superhet with gramophone jack and extra loudspeaker sockets.
    Tuned band-pass filter input.

    The cabinet is finished in Rosewood and Walnut.

    Also available in DC version, Model D4, and battery version Model B5.

  • Price in first year of sale
  • 14.50 GB £
  • Mentioned in
  • - - Manufacturers Literature (1933 Sales Brochure)
  • Literature/Schematics (1)
  • -- Schematic
  • Literature/Schematics (2)
  • Trader sheet 544

 Collections | Museums | Literature

Collections

The model A4 is part of the collections of the following members.

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