• Country
• United States of America (USA)

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

• Year
• 1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58783

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

• Number of Tubes
• 6

• Valves / Tubes
• 6K7G 6A8G 6K7G 6Q7G 6F6G 5Y3G

• Main principle
• Superhet with RF-stage; ZF/IF 345 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Short Wave(s) and Police.

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sparton 617 - Sparks-Withington Co., Sparton

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

• 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 8 = 1937 and before

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition (Rider's 8-9, 8-10)

• Literature/Schematics (1)
• Machine Age to Jet Age II (page 283.)

• Literature/Schematics (2)
• Cathedral & Tombstone Radios (page 254.)

• 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