Register here for a free copy of SATELLITE & CABLE TV Magazine, SMS & email Update

March 2019



On 6 February 2019, an Ariane 5 rocket sucessfully launched ISRO's latest communication satellite GSAT- 31. Arianespace has orbited 23 ISRO satellites to date.

Ariane 5 VA-247 similtanously also launched the Saudi Geostationary Satellite 1, also called Hellas Sat 4.

This was the first Ariane launch in 2019, and the last year for the Ariane-5 rocket, which will be replaced by the Ariane-6 rocket in 2020.


Positioned at 48° East, GSAT-31 has only Ku Band transponders & a projected lifespan of more than 15 years. GSAT-31 is a replacement for an INSAT satellite.

With a liftoff mass of 2536 kg, GSAT-31 is a small to medium sized satellite by t o d a y ' s standards.

"GSAT-31 has a unique configuration of providing flexible frequency segments and flexible coverage. The satellite will provide communication services to Indian mainland and islands" ISRO Chairman Dr. K Sivan said.

GSAT-31 Is India's 40th Communication Satellite

"GSAT-31 will provide DTH Television Services, connectivity to VSATs for ATM, Stock-exchange, Digital Satellite News Gathering (DSNG) and e-governance applications. The satellite will also be used for bulk data transfer for a host of emerging telecommunication applications" Sivan added.


The same Ariane 5 rocket also lofted the HS-4/SGS-1 satellite.

This Saudi Geostationary Satellite-1 /Hellas Sat-4, also called HS-4/SGS-1, is a geostationary condosat (a satellite that supports separate operator payloads on the same spacecraft bus) for KACST (King Abdulaziz City for Science and Technology Saudi Arabia) and Hellas Sat (Greece Cyprus).

HS-4/SGS-1 will provide TV, Internet, telephone & secure communications in the Middle East, South Africa and Europe.


ISRO has also contracted Arianespace to launch the GSAT-30; in June this year. It will replace end-of-life INSAT-4A at 83 degree East, to ensure continuity of several services. n