Receiving Circuit with Microtron tubes

Radio Products Corporation; Newark and Hoboken, NJ

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  • Year
  • 1932 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 318357

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • -Loudspeaker incorporated, but system not known.
  • from Radiomuseum.org
  • Model: Receiving Circuit with Microtron tubes - Radio Products Corporation;
  • Notes

  • This page shows a receiver conceived by the Patent Engineering Corp. of Harry van Deventer and Earl Koch.

    It employs special miniaturized tubes (Microtrons) with outside grids and a Crystal Speaker. The set and the tubes are probably a preliminary design.

    In 1932, the Radio Products Corp. announced plans for the release of a miniature radio developed by Earl Koch, in which small versions of 27s and a mercury vapor type 81 rectifier were emplyed. This set however used only 6 tubes, see Model 8.

    Also refer to this forum thread for more information.

  • Mentioned in
  • -- Schematic
  • Literature/Schematics (1)
  • Radio Age Vol.15, No.7, July 1932
  • Author
  • Model page created by Fin Stewart. See "Data change" for further contributors.

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