Lawrence 310 Console

Thom & Smith Pty. Ltd.(Tasma);Mascot, NSW

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  • Year
  • 1936
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 169999
    • Brand: Tasma

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 445 kHz; 3 AF stage(s)
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 67.5 & 135 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Lawrence 310 [Console] - Thom & Smith Pty. Ltd.Tasma;
  • Shape
  • Console, Lowboy (legs < 50 %).
  • Notes

  • Schematics indicate early radios had a 445kHz IF and from serial number 310-289 on used a 470kHz IF.

    Same model number and schematic is used in a mantel, console and radiogram versions.

    This model employs a mixture of 2V directly heated and 6V indirectly heated valves.

    Another unusual feature is the use of type 19 twin-triodes as class “A” push-pull drivers for the class “B” output stage. Phase splitting is effected by the use of a centre tapped choke in the grid circuit.

    See also Genalex model Glenelg BC310.

  • Price in first year of sale
  • 35.50 AUS £
  • Literature/Schematics (2)
  • - - Manufacturers Literature (Drawing No. 170, 7/1/1936.)
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

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