• Country
• United States of America (USA)

• Manufacturer / Brand
• Sparks-Withington Co., (Sparton); Jackson, Michigan

• Year
• 1939

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58647

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

• Number of Tubes
• 5

• Valves / Tubes
• 12A8GT 12K7GT 12Q7GT 35L6GT 40Z5GT

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 115 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Special material, described in the notes.

• from Radiomuseum.org
• Model: Sparton 500-CB Cloissone - Sparks-Withington Co., Sparton

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Notes

• Catalin case with chrome and cloisonne front.

  Yellow case available with yellow, blue or red face. 

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 12 = ca. 1941 and before

• Mentioned in
• Rider's 12-1

• Literature/Schematics (1)
• Machine Age to Jet Age II (page 282.)

• Literature/Schematics (2)
• Table Top Radios Vol. 1 Stein 98 (page 149.)

• Other Models

• Here you find 817 models, 365 with images and 754 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan