XM Radio asked the FCC for authority to modify the license of its S-band/X-band satellite XM-1 to relocate the satellite to 85.2 degrees West Longitude from the current 115.1 degree WL location.
At 85.2 degrees, XM Radio would cease transmitting on XM-1 and maintain it as an in-orbit spare for the XM-3 satellite currently operating at 85.1 degrees WL.
XM also requested special temporary authority to drift XM-1 to 115.1 degrees WL, operate it at that location for a period of time, and then drift it to 85.2 degrees WL. XM Radio requested an STA to test the XM-4 satellite at 110.7 degrees WL for 90 days following launch and then drift it to the 115-degree WL orbital location once testing is completed.
For information on these applications, see FCC Report SAT-00368.
— TV Technology