• Year
  • 1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 175399

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • Superheterodyne (common); ZF/IF 460 kHz; 2 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC) / 200; 240; 260 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm
  • Power out
  • 7 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 409 Ch= 639D - His Master's Voice HMV, H.M.V.
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes
  • This model has two levels of selectivity and a noise limiter.
  • Circuit diagram reference
  • Australian Official Radio Service Manual Vol. III
  • Literature/Schematics (1)
  • Mingay's Radio Diagram & I.F. Index
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

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