SXM‑5: SiriusXM’s Reliable Radio Broadcast Satellite

Overview & Purpose

SXM‑5, also known as XM‑5, is a high-power S‑band geostationary satellite operated by SiriusXM. Launched in October 2010, SXM‑5 is part of SiriusXM’s second-generation satellite constellation, working alongside SXM‑8 and SXM‑9 to deliver satellite radio content—music, news, talk, and sports—across the United States, Canada, and Puerto Rico. Designed primarily as a backup unit, SXM‑5 is fully capable of active service, providing redundancy and increased broadcast strength.

Launch & Operational History

• Launch Date: October 14, 2010 via Proton-M/Briz-M rocket.
• Orbit: Inserted into geostationary orbit at 85.2° West longitude.
• Effective Service: Initially served as an in-orbit spare, activated to replace XM‑4 in December 2010.
• Continues operating in tandem with SXM‑8 to support SiriusXM’s network and broadcast availability.

Satellite Features

• Platform: Built on the Space Systems/Loral 1300-class bus as part of SiriusXM’s high-power satellite fleet.
• Transponder Power: Equipped to boost broadcast signal strength to vehicles, even in obstructed environments.
• Service Role: Enhances signal reliability and network redundancy, ensuring uninterrupted radio service even if other satellites fail.

Significance & Legacy

• SXM‑5 replaced XM‑4, becoming an integral part of SiriusXM’s geostationary S‑band radio network.
• Strengthened coverage in North America, enabling SiriusXM to maintain signal continuity throughout the 2010s.
• Demonstrates SiriusXM’s long-term approach to maintaining a resilient satellite fleet with overlapping capabilities.