ST300 A.C. Mains

ST Valve, S.T. Limited, John Scott-Taggart; London

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  • Year
  • 1932
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 241021
    • Brand: ST = Scott-Taggart

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • TRF with regeneration; 1 AF stage(s)
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast (MW) and Long Wave.
  • Power type and voltage
  • Powered by external power supply or a main unit. / 4 & 9 & 60 & 120 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: ST300 [A.C. Mains] - ST Valve, S.T. Limited, John
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 16 x 7 x 10 inch / 406 x 178 x 254 mm
  • Notes

  • Similar to the ST300 battery version, mainly by subsitution of indirect filament (A.C.) valves (tubes). Requires Grid Bias battery. LT is 4V AC and multiple HT voltages from separate PSU.

    As it is a kit any alternate equivalent valves (tubes) may be original. High impedance headphones or reed speaker, output is capacitor isolated so an LF choke is used.

    The on/off switch on the ST300 battery is replaced by a Gramophone pickup jack.

    Construction is Panel (Ebonite, Wearite etc) and Wood base, "Box"  case optional.

  • Mentioned in
  • - - Manufacturers Literature (April 1932 The Wireless Constructor)
  • Author
  • Model page created by Michael Watterson. See "Data change" for further contributors.

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