- Country
- United States of America (USA)
- Manufacturer / Brand
- Sparks-Withington Co., (Sparton); Jackson, Michigan
- Year
- 1932/1933
- Category
- Car Radio, perhaps also + sound player/recorder
- Radiomuseum.org ID
- 58593
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 172.5 kHz; 2 AF stage(s)
- Tuned circuits
- 7 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries / -63 & -45 & 6 & 90 & 135 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Metal case
- from Radiomuseum.org
- Model: Sparton 34 - Sparks-Withington Co., Sparton
- Shape
- Chassis only or for «building in»
- Notes
-
Push-pull audio amplifier. Supply from 6V car storage battery, plus dry batteries for B and C. The 2nd detector is the Wunderlich tube 70, very rare! In the book "The Collector's Vacuum Tube Handbook" by Robert T. Millard, The Sparton Model 34 is given as the only known model that used a 70. See also the article about Wunderlich tubes.
- Price in first year of sale
- 79.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Circuit diagram reference
- Rider's Perpetual, Volume 3 = 1933 and before
- Mentioned in
- Rider's 3-3, 3-4
- Literature/Schematics (1)
- Sparton Radio Service Manual (Sparton Manual 1, Bulletin 51-1,2 Bulletin 43-3, 4)
- Literature/Schematics (3)
- Radio Retailing (Radio & Television R.) (January 1933 page 29.)
- 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