- Country
- United States of America (USA)
- Manufacturer / Brand
- Sparks-Withington Co., (Sparton); Jackson, Michigan
- Year
- 1931
- Category
- Car Radio, perhaps also + sound player/recorder
- Radiomuseum.org ID
- 58608
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 6
- Main principle
- TRF without regeneration
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Metal case
- from Radiomuseum.org
- Model: Sparton 40A - Sparks-Withington Co., Sparton
- Shape
- Chassis only or for «building in»
- Notes
-
A green folder from Sparton Canada shows at least the models 6, 9A, 10, 15, 24, 26, 30, 35, 40 and the Sparton Visionola. Visionola was described early 1931.
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
- Literature/Schematics (1)
- Sparton Radio Service Manual (Sparton Manual 1, Bulletin 39-1 to -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