Browning-Drake receiver utilising Airzone Browning-Drake coils

Airzone (1931) Ltd.; Sydney

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  • Year
  • 1926
  • Category
  • Kit (Parts plus instruction) or building instructions only
  • Radiomuseum.org ID
  • 354245

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

 Technical Specifications

  • Main principle
  • TRF with regeneration
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Batteries / addl. power jack
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Browning-Drake receiver utilising Airzone Browning-Drake coils - Airzone 1931 Ltd.; Sydney
  • Shape
  • Tablemodel, Box - most often with Lid (NOT slant panel).
  • Notes

  • Browning-Drake receiver utilising the Airzone Browning-Drake coils.

    The trend of modern research work in receiver design has nearly all been directed toward obtaining a greater degree of amplification per stage of radio frequency, and this goal has been the special aim of "Neutrodyne" and "Browning-Drake" circuits.

    It is not so much the circuits employed in these sets as the correct design, of the coils to be used. Describing this receiver, however, which employs the "Browning-Drake" circuit, is not intended to give details of the coil construction, as there are several excellent "Browning-Drake" coil kits available from our radio dealers, and their price is so reasonable that It would not pay anyone to make them for themselves.

    The four-valve receiver I am about to describe uses one stage of radio frequency amplification, a regenerative detector, and two stages of transformer-coupled audio amplification. The coils used are the "Airzone Kit," but there are other "Browning-Drake Kits" available, which should do equally well. The same remarks apply to all the other component parts used, such as the condensers, audio transformers, etc.; any good make should do, if, however, any reader wishes to make his set as compact as this one he may find it necessary to use rather small valves, such as UK199's or Cossor WR1, the latter with English bases. If the former are used It would be necessary in the last audio stage to employ a UX 120 power valve, for a UX 199 would be hopelessly overloaded here.

    Daily Telegraph Aug 13, 1926, Page Sup 8.

  • Mentioned in
  • -- Original prospect or advert (Daily Telegraph Aug 13, 1926, Page Sup 8.)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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