• Country
• United States of America (USA)

• Manufacturer / Brand
• MILITARY U.S. (different makers for same model)

• Year
• 1951 ??

• Category
• Military Equipment (not Re, Tr or RXT)

• Radiomuseum.org ID
• 169122

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

• Number of Tubes
• 7

• Valves / Tubes
• 12AU7 12AU7 12AU7 6AK6 6AK6 0B2 0B2

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Batteries / addl. power jack / 6, 12, 24 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: AF amplifier AM-65/GRC - MILITARY U.S. different makers

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 200 x 110 x 330 mm / 7.9 x 4.3 x 13 inch

• Notes
• AF amplifier installed in Army vehicles. Two isolated audio inputs are routed to a headset/intercom output via a common audio amplifier.
  AUDIO 1 from Receiver/Transmitter RT-70/GRC
  AUDIO 2 from Receiver/Transmitter RT-66/GRC or RT-67/GRC or RT-68/GRC.
  Furthermore, this unit contains heater supply and anode supply (90V) for RT-70/GRC. This is accomplished a power inverter, built into the AM-65/GRC unit. Depending on primary battery supply, this can be:
  PP448/GRC for 6V Battery
  PP281/GRC for 12V Battery or
  PP282/GRC for 24V Battery.
  This unit of american origin has been built by contractors in several NATO countries. German Model built by Telefunken.

• Net weight (2.2 lb = 1 kg)
• 7 kg / 15 lb 6.7 oz (15.419 lb)

• Source of data
• - - Manufacturers Literature

• Author
• Model page created by Franz Harder. See "Data change" for further contributors.

• Other Models

• Here you find 393 models, 345 with images and 210 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from MILITARY U.S. (different makers for same model)