- Country
- United States of America (USA)
- Manufacturer / Brand
- Sentinel Radio Corp., Evanston, Illinois
- Year
- 1932
- Category
- Car Radio, perhaps also + sound player/recorder
- Radiomuseum.org ID
- 57640
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 5
- Main principle
- Superheterodyne (common); ZF/IF 175 kHz; 1 AF stage(s)
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Storage and/or dry batteries / (135 or 180) & (67,5 or 90) & 6 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Metal case
- from Radiomuseum.org
- Model: 521 [old] - Sentinel Radio Corp., Evanston
- Shape
- Chassis only or for «building in»
- Notes
- Car battery for A, dry batteries for B supply.
- Price in first year of sale
- 39.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Circuit diagram reference
- Rider's Perpetual, Volume 5 = ca. 1934 and before
- Other Models
-
Here you find 710 models, 350 with images and 602 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sentinel Radio Corp., Evanston, Illinois