• Country
• United States of America (USA)

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

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 58657

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

• Number of Tubes
• 5

• Valves / Tubes
• 78 78 75 43 25Z5

• Main principle
• Superheterodyne (common); ZF/IF 456 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• AC/DC-set / 115 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sparton 506 [wood] - Sparks-Withington Co., Sparton

• Shape
• Tablemodel, with any shape - general.

• Notes

• The Sparton 506 uses a 147 Ohms resistance cord.

  By the way:
  Often mistakenly refered to as the Model 506 by collectors, the art deco Sparton Bluebird and Peachbird radios are actually Model 566 Spartons. 

  For the "Bluebird" mirror radio see this model Bluebird Model 566.

  For the "Peachbird" mirror radio see this model Peachbird Model 566.

  Not only did Sparton "proudly announce Bluebird Model 566" in one of their brochures but there is also the matter of their approach to model numbering. In June of 1935 they announced to the world their line of 1936 "regular" models, the entry level set being the Model 506, this small 5-tube ornamental mantel set priced at $29.95, the cabinet being made entirely out of wood. 

• Price in first year of sale
• 29.95 $

• 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 6 = 1935 and before

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Literature/Schematics (3)
• Radio Retailing (Radio & Television R.) (July 1935 page 55. August 1935 page 63.)

• 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