• Country
• United States of America (USA)

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

• Year
• 1934 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 331031

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

• Number of Tubes
• 5

• Valves / Tubes
• 2A7 58 2A6 2A5 80

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6 inch = 15.2 cm

• Power out
• 3.2 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 5721S "Minute Man" - Sentinel Radio Corp., Evanston

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 12.5 x 16 x 8 inch / 318 x 406 x 203 mm

• Notes

• Similar to model 5721 (5 tubes).

• Net weight (2.2 lb = 1 kg)
• 16.6 lb (16 lb 9.6 oz) / 7.536 kg

• Author
• Model page created by Michael Boessen. 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