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How to get the right portable satellite radio 
Choose the satellite radio subscription that will suit your needs for the best portable radio. 
There is 1 satellite radio service provider in the united states: siriusxm satellite radio. The company was formed when 2 competing companies, sirius radio and xm, merged in 2008.
The xm subscriptions have more channels available for all subscription levels than sirius, except the internet and smartphone option which has equal channels for both systems. Some shows are exclusive to either the sirius or xm packages.