XM Radio
- XM Radio
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XM Satellite Radio
XM Satellite Radio, ou XM Radio, NASDAQ : XMSR est un opérateur américain de radio numérique par satellite.
En 2008, XM comprend 239 stations radio sans publicité (parmi lesquelles 68 chaînes musicales, 30 chaînes d'information, de divertissement ou de sport et une vingtaine de chaînes locales).
Le système utilise deux satellites géostationnaires appelés Rock et Roll situés respectivement à 115°O et 85°O. Couvrant tout le continent nord-américain, ils ont été construits par Alcatel Space sur une plateforme Hughes System 702. La diversité apportée par les deux satellites situés à des orbites différentes permet d'améliorer la qualité de la transmission, notamment en cas de masquage d'un des deux satellites.
La transmission est effectuée en bande S.
Lien externe
Site officiel de XM Radio
Portail des entreprises
Catégories : Société cotée au NASDAQ | Entreprise du NASDAQ-100 | Entreprise américaine du secteur des médias | Bouquet de radio par satellite
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2010.
Contenu soumis à la licence CC-BY-SA. Source : Article XM Radio de Wikipédia en français (auteurs)
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