SXM 7 and 8 are two large high power broadcasting satellites for SiriusXM's digital audio radio service (DARS).
Space Systems/Loral (SS/L) got in July 2016 the contract to build the two satellites based on their SSL-1300 bus. Both SXM-7 and SXM-8 will operate in the S-band spectrum. Each satellite will generate more than 20-kW of power and will have a large unfurlable antenna reflector, which enables broadcast to radios without the need for large dish-type antennas on the ground.
The satellites will be launched in 2019 and 2020 to replace the XM 3 and 4 satellites.
|Type / Application:||Communication|
|Contractors:||Space Systems/Loral (SS/L)|
|Propulsion:||R-4D-15 HiPAT, 4 × SPT-100 plasma thrusters|
|Power:||2 deployable solar arrays, batteries|