Satellite radio is a service that transmits radio signals using one or more satellites orbiting the Earth, rather than from tall towers on the ground. The signal is received by specialized receivers that are typically installed in automobiles and home stereo systems. It works much like AM or FM broadcasting, but provides a clearer, more consistent audio signal with less static and interference. It also has the ability to transmit text information such as stock quotes or sports scores alongside music, and offers coast-to-coast coverage across the United States.
The satellite radio system transmits its signal to a satellite in orbit, which then relays it to one or more terrestrial “repeaters” to augment the signal strength in urban areas where tall buildings may interfere with it. From there, it can be broadcast to cars, trucks, RVs and homes with a specialized tuner. Most automobile manufacturers offer satellite radio as an option, and the service is available in many trucks made by Freightliner and Sterling. The service is billed on a subscription basis; prices vary depending on the package you choose and the number of radios you own.
Sirius and XM Satellite Radio both began broadcasting in 2001, with each competing for marquee talent (such as Howard Stern) to attract subscribers. Both services merged in 2008 to form Sirius XM Radio. Unlike AM or FM stations, satellite radio’s clear digital signal can travel far distances, making it ideal for long road trips. It can also be heard on your boat or RV if you install a receiver with satellite radio controls and an antenna.
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