Sparton 85-X

Sparks-Withington Co., (Sparton); Jackson, Michigan

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  • Year
  • 1934/1935
perfect model
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 58932

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

 Technical Specifications

  • Number of Tubes
  • 9
  • Main principle
  • Superhet with RF-stage; ZF/IF 456 kHz; 2 AF stage(s)
  • Tuned circuits
  • 9 AM circuit(s)
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC) / 125, 150, 250 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Sparton 85-X - Sparks-Withington Co., Sparton
  • Shape
  • Console with any shape - in general
  • Notes

  • The Sparton model 85-X is an excport model and receives the following bands: Broadcast 550 - 1500 kHz and the SW bands 1.4 - 3.4 MHz, 3.3 - 8 MHz and 7.5 - 19 MHz. Rider's shows the same schematic for models 80, 83, 84, 85-X and 86-X. Since it has the same chassis as model 83 with VisoGlo we presume that this "higher" model has it too. There are two models 83, one with the VisoGlo tuning indicator and the other without but in principle the same chassis. VisoGlo tuning indicator VG-1 is extremely rare, even in the literature it is nearly not noticed.
    See the article here about season 1934/35.

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 5 = ca. 1934 and before
  • Literature/Schematics (1)
  • -- Schematic

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