LJ 3Q4

Astor (brand), Radio Corporation Pty., Ltd.; Melbourne

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  • Year
  • 1947
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 184267
    • alternative name: Radio Corp.of Australia

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 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 8 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Dry Batteries / 90 & 1.5 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: LJ [3Q4] - Astor brand, Radio Corporation
  • Shape
  • Tablemodel, low profile (big size).
  • Notes

  • Bakelite cabinet type M2, Astor part no. 59/81, the same used on models KN, JJ & FP.

    "The first production run of the 5 tube battery receiver Model 'LJ' has been modified to use a type 3Q4 tube in place of the 3V4. The modification is due to the shortage of type 3V4 tubes. Should it be required to change the 3Q4 tube to a type 3V4 tube, no circuit alterations are necessary exept for the wiring of the tube socket." Reference to 3Q4 valve in LJ-2 Bulletin.

  • Price in first year of sale
  • 31.50 AUS £
  • Circuit diagram reference
  • Australian Official Radio Service Manual Vol. VI
  • Literature/Schematics (1)
  • - - Manufacturers Literature (Astor Technical Bulletins LJ-1, 25/7/1947; LJ-2, 26/7/1947 & LJ-3, 27/2/1949.)
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

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