• Country
• United States of America (USA)

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

• Year
• 1939/1940

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 57490

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

• Number of Tubes
• 4

• Valves / Tubes
• 1A7G 1N5G 1H5G 1A5G

• 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
• Storage and/or dry batteries / 90V/1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• from Radiomuseum.org
• Model: 205 BL - Sentinel Radio Corp., Evanston

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

• Dimensions (WHD)
• 12.25 x 9 x 4.875 inch / 311 x 229 x 124 mm

• Notes

• 2x45V for +B (90V) 1.5V for filament built in loop antenna. Tunes 540 to 1600 k.c.

• Net weight (2.2 lb = 1 kg)
• 12.75 lb (12 lb 12 oz) / 5.789 kg

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 11 = ca. 1940 and before

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Literature/Schematics (3)
• Shown for Season 1939/40 for 1940 in Sentinel Folder No. 120.

• Other Models

• Here you find 705 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