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by—September 16, 2020Lockheed Martin’s sixth Advanced Extremely High Frequency (AEHF-6) protected communications satellite is encapsulated in its protective fairings ahead of its March 26 launch on a United Launch Alliance Atlas 5 rocket. Credit: Lockheed Martin
The sixth Advanced Extremely High Frequency (AEHF-6) communications satellite successfully completed on-orbit testing Aug. 27.
WASHINGTON — The AEHF-6 military communications satellite launched March 26 has completed on-orbit testing and will be turned over to U.S. Space Command for additional tests before the spacecraft can be declared operational, the program manager told SpaceNews Sept. 16.
“We are going to start operational testing with the users,” said Col. John Dukes, head of the Space Production Corps’ Geosynchronous Orbit Division at the Space and Missile Systems Center.
The satellite’s manufacturer Lockheed Martin announced Sept. 15 that the sixth Advanced Extremely High Frequency (AEHF-6) protected communications satellite successfully completed on-orbit testing Aug. 27.
“Now the users have to continue testing,” Dukes said.
The 4th Space Operations Squadron at Schriever Air Force Base, Colorado, maintains and commands the 10-satellite AEHF-MILSTAR constellation that operates in geosynchronous Earth orbit
The satellites provide secret-level global communications services to the U.S. military and international partners Australia, Canada, the Netherlands and the United Kingdom.
AEHF-6 is the final satellite of the constellation. The Space and Missile Systems Center is studying options for future systems.
The AEHF satellites supplement five older MILSTAR satellites that were produced in the 1990s. Dukes said there is a misconception that AEHF satellites are replacements to MILSTAR. “It does not replace MILSTAR, it enhances that capability,” he said.
Once AEHF-6 is ready for operational use, the protected satellite program will be complete.
“This is a process which has taken more than 26 years,” the Space Force said in a news release. The first MILSTAR satellite launched in February 1994.