247 (247-P)
Sentinel Radio Corp., Evanston, Illinois
- Country
- United States of America (USA)
- Manufacturer / Brand
- Sentinel Radio Corp., Evanston, Illinois
- Year
- 1941/1942
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 57525
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 5
- Main principle
- Superheterodyne (common); ZF/IF 455 kHz
- Tuned circuits
- 6 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Line / Batteries (any type) / 117/67.5/1.5 Volt
- Loudspeaker
- Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 3.5 inch = 8.9 cm
- Material
- Bakelite or Plastics (type unknown)
- from Radiomuseum.org
- Model: 247 - Sentinel Radio Corp., Evanston
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
- Line supply = AC or DC 67.5V =+B 1.5V = filament. - Built in extra loop antenna "SEN-TENNA", that permits reception anywhere - in cars, trains and planes.
- External source of data
- Ernst Erb
- Source of data
- Collector's Guide to Antique Radios 4. Edition
- Circuit diagram reference
- Rider's Perpetual, Volume 16 = ca. 1948 and before
- Mentioned in
- Radio Retailing (Radio & Television R.) (June 1941.)
- Other Models
-
Here you find 710 models, 349 with images and 596 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sentinel Radio Corp., Evanston, Illinois
Collections
The model 247 (247-P) is part of the collections of the following members.