XM
Updated: 04/26/2017 by Computer Hope
Now known as Sirius XM radio, XM is a paid satellite radio service. It provides the listener with hundreds of commercial free music and talk radio stations. The service was launched on September 25, 2001.
On June 29, 2008, XM and Sirius completed their merger and combine their services into one service, which later began being broadcast as one service on November 12, 2008.