GSAT
The GSAT-7A, a military communications satellite, in deployed configuration | |
| Manufacturer | ISRO |
|---|---|
| Country of origin | India |
| Operator | INSAT |
| Applications | Communications |
| Specifications | |
| Regime | Geostationary orbit |
| Production | |
| Status | In service |
| On order | 6 |
| Built | 27 |
| Launched | 27 |
| Operational | 20 |
| Retired | 3 |
| Failed | 3 |
| Lost | 1 |
| Maiden launch | GSAT-1 (GramSat-1) 18 April 2001 |
| Last launch | GSAT-7R (CMS-03) 2 November 2025 |
The GSAT (Geosynchronous Satellite) series is a family of Indian communications satellites, indigenously developed and operated by the ISRO. The prorgamme was initiated in the early 2000s to create indigenous, multi-purpose, geostationary spacecrafts capable of supporting India's growing needs in telecommunications, broadcasting, broadband, emergency management, reconnaissance and navigation. The programme was supported by the development of Geosynchronous Satellite Launch Vehicle.
GSAT satellites include a total of 168 transponders (out of which 95 are leased out to provide services to broadcasters), and operate primarily in C, Extended C, Ku, Ka, S and L bands, with payload configurations tailored for civilian, commercial, and strategic needs. The development of both GSAT satellites and the GSLV launch system represents India's transition from dependence on foreign-built INSAT spacecraft to self-reliant national communications capability. As of 21 November 2025, 27 GSAT satellites manufactured by ISRO have been launched, out of which 20 are in service and six more being planned.