1508

His Master's Voice (Masters, HMV, H.M.V., Marconi); Hayes, Middlesex, GB

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  • Year
  • 1953 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 146710

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 470 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and Short Wave.
  • Details
  • Record Player (perh.Changer)
  • Power type and voltage
  • Alternating Current supply (AC) / 195-255 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 1508 - His Master's Voice Masters,
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 280 x 350 x 200 mm / 11 x 13.8 x 7.9 inch
  • Notes

  • Portable radiogram. Same chassis as model 1507 but the similar case is veneer instead of rexine like covering and speaker cloth instead of plastic grill.

    Early production used valve/tube types X109, W107, DH107, N108, U107. (all B7G 100 mA except X109, rather than listed Rimlock B8A  100mA types).

    The HMV record player unfolds from the rear. Speeds 33.3, 45 & 78 rpm.

    Mains supply via a side mounted 3 pin connector (Earth is centre pin and required). While there is a transformer and player chassis is earthed, the radio chassis connects to one mains wire and the transformer provides no isolation as it's just an auto-transformer for filament series chain. The HT uses "dropper" resistors to U142/U107 direct from mains "live"

  • Source of data
  • -- Schematic
  • Circuit diagram reference
  • Radio and TV Servicing books (R&TVS) book
  • Author
  • Model page created by Keith Staines. See "Data change" for further contributors.

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