Which of the following describes the satellite configuration used by Sirius Radio?

Sirius Radio utilizes a satellite configuration that comprises three satellites in unique elliptical orbits alongside one geostationary satellite. This setup allows for a comprehensive coverage area, enabling Sirius to deliver a robust signal to its users across various geographic locations.

The unique elliptical orbits of the three satellites provide flexibility and ensure that coverage is maintained even in areas where a geostationary satellite might encounter limitations due to the curvature of the Earth or obstructions like buildings and mountains. The geostationary satellite, positioned at a fixed point relative to the Earth's surface, complements this arrangement by providing a consistent service to certain regions.

By leveraging both geostationary and elliptical orbit satellites, Sirius Radio can offer a reliable and wide-ranging audio service, ensuring that listeners experience minimal disruptions regardless of their location. This hybrid approach exemplifies a strategic satellite configuration designed to maximize broadcast effectiveness and service availability.