31B (31B74)
Sentinel Radio Corp., Evanston, Illinois
- Country
- United States of America (USA)
- Manufacturer / Brand
- Sentinel Radio Corp., Evanston, Illinois
- Year
- 1935 ??
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 57586
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 6
- Main principle
- Superheterodyne (common); ZF/IF 465 kHz
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast plus 2 Short Wave bands.
- Power type and voltage
- Storage Battery for all (e.g. for car radios and amateur radios) / 6 Volt
- Loudspeaker
- Magnetic loudspeaker (reed) generic.
- Material
- Wooden case
- from Radiomuseum.org
- Model: 31B - Sentinel Radio Corp., Evanston
- Shape
- Tablemodel, high profile (upright - NOT Cathedral nor decorative).
- Notes
- Sync.vibrator for +B
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 6 = 1935 and before
- Mentioned in
- Machine Age to Jet Age II (page 248.)
- Literature/Schematics (1)
- Cathedral & Tombstone Radios (page 232 & page 230.)
- 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