- Country
- United States of America (USA)
- Manufacturer / Brand
- Sparks-Withington Co., (Sparton); Jackson, Michigan
- Year
- 1934/1935
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 58853
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 7
- Main principle
- Superhet with RF-stage; ZF/IF 345 kHz; 2 AF stage(s)
- Tuned circuits
- 9 AM circuit(s)
- Wave bands
- Broadcast and Short Wave (SW).
- Power type and voltage
- Storage and/or dry batteries / -9 & -3 & 2 & 67.5 & 135 Volt
- Loudspeaker
- Magnetic loudspeaker (reed) generic.
- Material
- Wooden case
- from Radiomuseum.org
- Model: Sparton 70 - Sparks-Withington Co., Sparton
- Shape
- Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
- Notes
-
The model Sparton 70 is a "Country Home Receiver" = Farm Radio. Push-pull audio amplifier. There is a model 775 with the same technic. See the article here about season 1934/35.
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 6 = 1935 and before
- Mentioned in
- Rider's 6-3
- Literature/Schematics (1)
- Machine Age to Jet Age II (page 281.)
- Literature/Schematics (2)
- Cathedral & Tombstone Radios (page 253.)
- Other Models
-
Here you find 804 models, 364 with images and 751 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sparks-Withington Co., (Sparton); Jackson, Michigan