• 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
• 58411

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

• Number of Tubes
• 7

• Valves / Tubes
• 35 35 35 27 27 47 80

• Main principle
• Superhet with RF-stage; ZF/IF 172,5 kHz; 1 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 8 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 10 - Sparks-Withington Co., Sparton

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 378 x 457 x 267 mm / 14.9 x 18 x 10.5 inch

• Notes
• Bandfilter input circuits.

• External source of data
• Ernst Erb

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

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

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition (Rider's 2-3, 2-4)

• Literature/Schematics (1)
• Machine Age to Jet Age II (page 281.)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 252.)

• Other Models

• Here you find 773 models, 361 with images and 720 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan