• Year
  • 1932 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 58891

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

 Technical Specifications

  • Number of Tubes
  • 10
  • Main principle
  • Superhet with RF-stage; ZF/IF 172.5 kHz; 2 AF stage(s)
  • Tuned circuits
  • 8 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 60 cycles, 110 to 130 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Sparton 750-X - Sparks-Withington Co., Sparton
  • Shape
  • Console with any shape - in general
  • Notes
  • The Sparton 750-X is an AC operated 10 tube BC band receiver.  Has a band filter input circuit and push-pull output.

    The schematic used for this model is also used for models 17, 18, 28-X, 111-X, 750-A, 870-A and 870-X.

    See article here about different radio seasons.

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before

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