The SSL 1300, previously the LS-1300 and the FS-1300, is a satellite bus produced by SSL (company). Total broadcast power ranges from 5 to 25 kW, and the platform can accommodate from 12 to 150 transponders. The SSL 1300 is a modular platform and SSL no longer reports designators for sub-versions, such as: 1300E, 1300HL, 1300S, 1300X.
First available in the late 1980s, the SSL 1300 platform underwent revision multiple times over its design life, all the while remaining a popular communications platform. The earliest models provided 5,000 RF watts of transmitter power, weighed 5,500 kg, and required a 4-meter diameter launch fairing. Newer models provide double that, approximately 10,000 RF watts of transmitter power, weigh 6,700 kg, and require a 5-meter diameter launch fairing.
In September 2015 SSL announced that it had delivered 100 satellites based on the SSL 1300 platform. There are more SSL 1300's currently providing service on orbit than any other model communications satellite.
It was the first to reach 20-kW of power, which enables satellite broadcast of today’s HD and UltraHD television.
It was the first satellite to provide two-way ground-based beam forming, which increases a satellite’s flexibility to meet changing business requirements.
The 1300 was one of the first platforms to use shaped antenna reflectors, which enable precisely defined coverage areas.
The 1300 was the first Western satellite to use electric propulsion, which reduces mass allowing for more payload power or a less costly launch. Today there are 18 1300s with electric propulsion on orbit.