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2.2 The Hisdesat satellite system
The national programme of governmental communications uses the
SpainSat and Xtar-Eur satellites.
Secure Communications System The Xtar-Eur satellite has 12 X-band transponders
and from its 29ºE orbital position provides coverage
SpainSat’s 30ºW orbital position allows simultane- from Brazil to Indonesia, including Europe, Africa, the
ous coverage of most of Europe, North Africa and Middle East and a large part of Asia. Between both
some areas of the Middle East. On the other side of satellites, HISDESAT provides its secure communica-
the Atlantic coverage extends to South and Central tion services to two thirds of the earth’s surface.
America and a large part of North America. It uses
13 X-band transponders and one high-powered Ka- To operate these satellites, there are ground control
band transponder, thereby establishing secure quality centres in Arganda del Rey (Madrid) and Maspalo-
communications. mas (Canary Islands) in the case of SpainSat; and in
SECURE COMMUNICATIONS SYSTEM
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