• Country
• United States of America (USA)

• Manufacturer / Brand
• Sentinel Radio Corp., Evanston, Illinois

• Year
• 1956

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 91468

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 4

• Valves / Tubes
• 1R5 1U4 1U5 3V4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Line / Batteries (any type) / 60 Hz, 117V = 110 -120;4.5 & 90 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: 1U355P - Sentinel Radio Corp., Evanston

• Shape
• Portable set > 8 inch (also usable without mains)

• Notes

• The Sentinel Model 1U-355P is a line or battey powered portable AM superheterodyne receiver. Selenium rectifier.

• Literature/Schematics (1)
• Beitman Radio Diagrams, Vol. 14, 1954

• Literature/Schematics (2)
• Photofact Folder, Howard W. SAMS (Set 325 Folder 11 dated 8-56)

• Author
• Model page created by Walter Wiesmüller † May 2012. See "Data change" for further contributors.

• 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