- Country
- United States of America (USA)
- Manufacturer / Brand
- Sparks-Withington Co., (Sparton); Jackson, Michigan
- Year
- 1932 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 58969
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 8
- Main principle
- Superhet with RF-stage; ZF/IF 172.5 kHz; 2 AF stage(s); Screengrid 1926-1935
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 60 cycle, 110 to 130 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Sparton 9X - Sparks-Withington Co., Sparton
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 4 = ca. 1934 and before
- Literature/Schematics (1)
- Sparton Radio Service Manual (Sparton Manual 1, Bulletin 45-1, 2, Bulletin 31-3, 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