440

Invicta Radio Ltd.; Cambridge, London

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  • Year
  • 1938
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 251751

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast, Long Wave and 2 x Short Wave.
  • Power type and voltage
  • Storage and/or dry batteries / 2 & 9 & 110 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: 440 - Invicta Radio Ltd.; Cambridge,
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 16.125 x 19.5 x 10.125 inch / 410 x 495 x 257 mm
  • Notes

  • The 430, 440 & 460 all share same cabinet and coverage.

    • 430 200V to 250V 40Hz to 100Hz AC only. 100 to 250V AC and 25Hz are separate special order versions.
    • 440 Batteries
    • 460 AC/DC operation (Universal)

    Tone compensated volume control. Four colour tuning scale. Three tone settings. HT Power consumption 10mA. Visual indication if set is on or off. Piano finish Walnut veneer cabinet. Octode Frequency Changer. Transformer coupling between TDD2A (double Diode Triode) and PM22A (output Pentode).

    PU (Gram) and Speaker (2 Ohms) sockets.

    LT: 2V Lead  Acid Accumulator.

    GB & HT: Winner 120G or Invicta "INV5". Possibly 81, 108, 110, 120 or higher HT packs with suitable GB selected.

    Wavebands:

    • SW2: 13.5 .. 52 m
    • SW1: 50 .. 200 m
    • MW: 200 .. 560 m
    • LW: 900 .. 2100 m

    Price Approximate (part of brochure missing). Other models in Brochure Mullard mentioned.

  • Price in first year of sale
  • 9.70 GBP
  • Mentioned in
  • - - Manufacturers Literature
  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

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