• Year
  • 1934
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 193124

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
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 10.5 & 133 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: B24 - Murphy Radio Ltd.; Welwyn
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Notes
  • 5-valve battery-powered superhet.

    The cabinet is in Walnut and Bird’s Eye Maple in a modernistic style by R.D. Russell.

    Special filters: -

    The aerial is coupled to the grid of V1 by a bandpass tuning circuit which also incorporates an image frequency suppression circuit (whistle suppressor). Additionally in the anode circuit of V4 is a heterodyne filter with a very sharp cut-off.

  • Price in first year of sale
  • 14.00 GBP
  • Literature/Schematics (1)
  • Trader sheet 516
  • Literature/Schematics (2)
  • - - Manufacturers Literature (B24 & B25 Receivers Technical Notes, 3rd Ed.)
  • Author
  • Model page created by Howard Craven. See "Data change" for further contributors.

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