• Country
• United States of America (USA)

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

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58481

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

• Number of Tubes
• 13

• Valves / Tubes
• C-484 or C-485 C-484 or C-485 C-484 or C-485 C-484 or C-485 C-484 or C-485 C-484 or C-485 C-484 or C-485 C-585 or C-586 C-585 or C-586 C-226 C-226 C-281 C-281

• Main principle
• TRF without regeneration; 2 AF stage(s)

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 100-130 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sparton 111-A - Sparks-Withington Co., Sparton

• Shape
• Console with any shape - in general

• Notes

• One dial (primary tuning control knob) . Push-pull audio amplifier.

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Circuit diagram reference
• Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)

• Mentioned in
• Rider's 2-43

• Literature/Schematics (1)
• Sparton Radio Service Manual (Sparton Manual 1, Bulletin 15-1, 2, Bulletin 31-3, 4)

• 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