• Country
• United States of America (USA)

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

• Year
• 1931

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 58758

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

• Number of Tubes
• 3

• Valves / Tubes
• 24A 24A 27

• Main principle
• Superhet with RF-stage; ZF/IF 900 kHz

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - For headphones or amp.

• from Radiomuseum.org
• Model: Sparton 26AW Shortwave - Sparks-Withington Co., Sparton

• Notes

• SW-Converter for 26AW Broadcast model. 4 bands: 1.5-25.5 MHz. Separate 115V transformer for heater supply voltage.

• External source of data
• Ernst Erb

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

• Mentioned in
• Rider's 2-10

• Literature/Schematics (1)
• Sparton Radio Service Manual (Sparton Manual 1, Bulletin 37-1, 3 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