• Year
  • 1930 ?
  • Category
  • Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter
  • Radiomuseum.org ID
  • 131201

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

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • RF Converter/Adapter (not voltage converter); ZF/IF 840 kHz; Screengrid 1926-1935
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • from Radiomuseum.org
  • Model: 33 - Jackson-Bell Co. pre 1935; Los
  • Notes
  • Converter: SW-bands to BC-band; SW1 = 18 to 40 m; SW2 = 40 to 80 m; SW3 = 80 to 160m.
  • Circuit diagram reference
  • Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

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