• 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
• 58570

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

• Number of Tubes
• 10

• Valves / Tubes
• 35 35 27 35 35 27 45 45 80 27

• Main principle
• Superhet with RF-stage; ZF/IF 172.5 kHz

• Wave bands
• Broadcast only (MW).

• Details
• Record Player (perh.Changer)

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sparton 30 Ensemble early - Sparks-Withington Co., Sparton

• Shape
• Console with any shape - in general

• Notes

• Automatic Phonograph. A green folder from Sparton Canada shows at least the models 6, 9A, 10, 15, 24, 26, 30, 35, 40 and the Sparton Visionola. Visionola was described early 1931.

• Price in first year of sale
• 235.00 $

• 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
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Literature/Schematics (1)
• Sparton Radio Service Manual (Sparton Manual 1, Bulletin 38-1 to -8 Bulletin 33-3, 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