GSAT

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The GSAT satellites are India's indigenously developed technologies of satellite communications, like digital audio, data and video broadcasting. GSAT has been designed with two S-band and 3 C-band transponders (a high power C-band and two indigenous C-band transponders).

GSAT-11

A new satellite named GSAT-11 will provide advanced telecom services from 2011-12. At 4.5 tonnes, it will weigh more than twice as much as the biggest Indian satellite in orbit now. The advanced communications technology satellite will be launched in mid-2011 on board the Geo-Synchronus Satellite Launch Vehicle (GSLV-Mark III) from ISRO's spaceport at Sriharikota, about 80 km north-east of Chennai. The satellite will be designed at satellite centre in Bangalore, payloads consisting of 40 transponders in Ku/Ka band will be built at the space applications centre in Ahmedabad and the 630-tonne rocket (GSLV-Mark III) will be rolled out from the liquid propulsion systems centre in Thiruvananthapuram. With 16 high capacity multi-beams in Ku/Ka band, GSAT-11 will provide much faster uplinks for a host of communications and broadcasting services, including direct-to-home (DTH television). With a dry mass of 2.1 tonne, the spacecraft will provide 10 GHz of bandwidth, which will be equivalent to about 220 transponders of 36 MHz. The advanced satellite will employ a new 1-4K Bus (computer network). It will be configured with two-sided large solar array panels generating 11 KW of power.

In the run-up to GSAT-11, the space agency is scheduling the launch of other communications satellites in the GSAT series by 2011-12.

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