• Country
• United States of America (USA)

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

• Year
• 1938 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 57737

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

• Number of Tubes
• 4

• Valves / Tubes
• 1C6 34 1F6 33 5E1

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Storage and/or dry batteries / 133/22.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: 90B - Sentinel Radio Corp., Evanston

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 9 = 1938 and before

• Other Models

• Here you find 710 models, 349 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