• Year
  • 1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 58617

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • TRF without regeneration; 1 AF stage(s)
  • Tuned circuits
  • 4 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Storage and/or dry batteries / -63 & -45 & 6 & 90 & 135 Volt
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • from Radiomuseum.org
  • Model: Sparton 42 - Sparks-Withington Co., Sparton
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Mentioned in
  • Rider's 8-8

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