• Country
• Australia

• Manufacturer / Brand
• Healing, A.G., Ltd.; Melbourne

• Year
• 1952

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 192431

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

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1T4 1S5 3V4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 200-214; 215-234; 235-250 / 90 & 7.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• from Radiomuseum.org
• Model: Trio 400H - Healing, A.G., Ltd.; Melbourne

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• A metal rectifier is used for both H.T. and L.T. when on mains power. No power transformer is used.

  Colours available in Tan, Ivory & Red.

• Price in first year of sale
• 31.50 AUS £

• Circuit diagram reference
• Australian Official Radio Service Manual Vol. XI

• Literature/Schematics (1)
• - - Manufacturers Literature (Healing Service Data Manual, Pages 305 & 306.)

• Author
• Model page created by Stuart Irwin. See "Data change" for further contributors.

• Other Models

• Here you find 415 models, 220 with images and 175 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Healing, A.G., Ltd.; Melbourne