• Country
• United States of America (USA)

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

• Year
• 1957 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 310089

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

• Number of Tubes
• 4

• Valves / Tubes
• 12AX7 6V6GT 6V6GT 5Y3GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 60 Hz, 117V = 110 -120 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Ch= AMP-138AA - Sentinel Radio Corp., Evanston

• Shape
• Chassis only or for «building in»

• Notes

• Sentinel Chassis AMP-138AA is an AC Operated 10 Watt Audio Amplifier.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 361 Folder 9 dated 6-57)

• Author
• Model page created by Dirk Taekels. 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