What aspect of the Sirius radio system allows it to provide more robust coverage?

The integration of satellite and repeater systems is pivotal to the Sirius radio system's ability to deliver more robust coverage. This setup allows Sirius to leverage both satellites in orbit and ground-based repeaters, which work together to fill in coverage gaps and provide consistent service in a variety of environments.

Satellites provide broad coverage over large geographic areas, while repeaters help enhance the signal in urban areas or locations with obstacles like buildings that may obstruct the satellite signals. This dual approach means that even in challenging conditions where direct satellite visibility may be compromised, the repeater systems can maintain signal integrity and ensure that listeners enjoy uninterrupted service.

In other contexts, low-frequency signals tend to offer better propagation characteristics but do not directly relate to the unique coverage capabilities of Sirius and its use of integrated satellite and terrestrial technologies. Relying solely on internet streaming services would not provide the same level of coverage, particularly in remote or underserved areas where internet access may be limited. Lastly, limiting access to satellite-only signals would restrict the service's ability to reach a broader audience, which is contrary to the purpose of a hybrid system designed for comprehensive coverage.