• Country
• United States of America (USA)

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

• Year
• 1941 ??

• Category
• Miscellaneous (Other, Various) - see notes

• Radiomuseum.org ID
• 280932

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

• Number of Tubes
• 12

• Valves / Tubes
• 955 955 12SJ7 9004 9004 12SH7 12SH7 12SH7 12SH7 12SN7 12H6 12H6 0D3

• Power type and voltage
• Storage and/or dry batteries / 14-24 Volt

• Material
• Metal case

• from Radiomuseum.org
• Model: Radio altimeter RT-40/APN-1X - MILITARY U.S. different makers

• Notes

• Radio altimeter

  Frequency range: 418 - 462 MHz.
  Using the Doppler effect it is able to detect altitudes from 3 to 4000 feet (from 0.914 to 1219 meters).
  Power supply with dynamotor.

  Courtesy of "Radiosurplus Ieri e Oggi", Umberto Bianchi. Italy.

• Mentioned in
• The Surplus Handbook - Receivers and Transmitters (page 1-2)

• Author
• Model page created by Alessandro De Poi. 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)