Palmavox 724 44545

Palmavox (Brand), F.J. Palmer & Son Ltd.; Sydney NSW

Data
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  • Year
  • 1949–1952
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 312535

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 240v Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm
  • Material
  • Bakelite case
  • from Radiomuseum.org
  • Model: Palmavox 724 44545 - Palmavox Brand, F.J. Palmer &
  • Shape
  • Tablemodel without push buttons, Mantel/Midget/Compact up to 14
  • Dimensions (WHD)
  • 200 x 120 x 110 mm / 7.9 x 4.7 x 4.3 inch
  • Notes

  • Titan made this Palmavox radio for Palmers department store (F.J. Palmers & Sons, Sydney).

    The TRF circuit uses the 6N8 as the RF Amplifier & Detector, the VR91 as a high gain Audio Amplifier driving a 4 inch Speaker and a 6V4 Rectifier valve. The high tension voltage is obtained by direct rectification of the 240 volt mains (no transformer). The low tension voltage for the valve filaments & dial light is taken from a small transformer.

    Although this radio uses a power transformer it only supplies the valve heaters and dial lights. The Active line connects directly to the 6V4 Rectifier valve, then goes to Ground (Chassis) via the filament Transformer winding. The chassis is connected to one side of the mains and may be "live". We do NOT always state such cases - since often the uploader does not know.

    The ON/OFF switch is then operated from the Volume Potentiometer (On/Off/Volume), and the chassis is completely insulated from the Cabinet & Volume & Tuning knobs via the insulated screws on the back Fibre Board cover.

    The circuit is similar to the “TITAN TINY”

    Cabinet available in six shades.

  • Net weight (2.2 lb = 1 kg)
  • 2.5 kg / 5 lb 8.1 oz (5.507 lb)
  • Price in first year of sale
  • 14.75 AUS £
  • Mentioned in
  • HRSA Radio Waves Magazine July, 2008 "Three Babies" by David Bond, Page 36, Palmavox
  • Literature/Schematics (1)
  • Radio Days: Australian Bakelite Radios by Peter Sheridan, Page 203
  • Literature/Schematics (2)
  • Silicon Chip Magazine, Vintage Radio, "TITAN Tiny", by Rodney Champness, Page 86-90
  • Author
  • Model page created by Bruce Wilkie. See "Data change" for further contributors.

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Collections

The model Palmavox 724 is part of the collections of the following members.

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