• Country
• United States of America (USA)

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

• Year
• 1937/1938

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58764

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

• Number of Tubes
• 5

• Valves / Tubes
• 6A8G 6K7G 6Q7G 25L6G 25Z6G BK49B

• 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
• Bakelite case

• from Radiomuseum.org
• Model: Sparton 608-B [Polo Club] - Sparks-Withington Co., Sparton

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

• Dimensions (WHD)
• 12 x 7.25 x 7.625 inch / 305 x 184 x 194 mm

• Notes

• Brown bakelite. Ballast tube BK49B.

  Also available in black bakelite, ivory plaskon or red plaskon.

• 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 9 = 1938 and before

• Mentioned in
• Rider's 9-10, 9-11

• Literature/Schematics (1)
• Radio Retailing (Radio & Television R.) (June 1937.)

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

• Literature/Schematics (3)
• Machine Age to Jet Age II (page 283.)

• 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