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USA 98, a second of the NATO's NATO 4 series of encrypted communications satellites, was launched from Cape Canaveral by a Delta 2 rocket. The NATO Satellite Communications System provided immediate communication links between officials of the various NATO nations. As of 1998, one NATO 3 and two NATO 4 satellites were in earth orbit at an altitude of more than 23,000 miles. The satellites are ultra-high, super-high, and extremely-high frequency systems capable of providing secure voice and fax services to hundreds of users simultaneously. Members of an Air Force Space Command unit provided command and control for the NATO system.

Alternate Names

  • USA 98
  • 22921
  • NATO4B

Facts in Brief

Launch Date: 1993-12-08
Launch Vehicle: Delta II
Launch Site: Cape Canaveral, United States
Mass: 1430 kg

Funding Agency

  • North Atlantic Treaty Organization (International)


  • Communications

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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