Scatmag.com

February 2020

GSAT-30 LAUNCHED


A Replacement For The INSAT-4A Has Been Launched.


On 16 January 2020, Ariane5 flight VA251 carrying ISRO's GSAT-30 & Eutelsat Konnect satellites successfully placed the 2 satellites in Geosynchronous Transfer Orbit (GTO).


NOT BY GSLV

ISRO has developed the GSLV III launcher that can place satellites of up to 2,500 Kgs in GTO.

However, the GSAT-30 weighs 3,357 Kgs and is beyond the GSLV's launch capability. Hence it was launched by Arianespace.


GSAT-30

The GSAT-30 is a replacement for the ageing INSAT-4A launched on 22 December 2005, with a projected life of 12 years. INSAT-4A was India's first dual - C & Ku Band Satellite. On 21 October 2019, the INSAT-4A was moved to a "graveyard orbit." Hence there has been an urgent need for a replacement satellite.

Similar to the INSAT-4A, the GSAT-30 has 12 C-Band + 12 Ku-Band Transponders.

The Ku band transponders cover the Indian land mass including the Andaman & Nicobar islands. Its C-band coverage will extend to the Gulf countries, a large number of Asian countries and Australia, according to ISRO.

The GSAT-30 has a projected mission life of 15 years & will provide DTH, television uplink & VSAT services.

GSAT-30 was created and built at ISRO by project director V Ramanathan and his team in less than 1 year.






LOCATION

The INSAT-4A was located at 83 degrees East. Later, the GSAT-10 was also launched and co-located in the same slot.

The GSAT-30 will be co-located with the GSAT-10 at 83 degrees East.



GSAT-10

The GSAT-10 communications satellite was launched by Arianespace in September 2012, and co-located with the INSAT-4A satellite. It has 12 KU Band, 12 C Band and 6 lower extended C Band transponders, and included a navigation payload to augment GAGAN (GPS Aided Geo Augmented Navigation) capacity.

The satellite provides additional C & Ku Band capacity to the INSAT-4A satellite. It has a 15 year projected life & should remain operational till August 2027.

GSAT-30 will now add transponder capacity and provide even better signal strengths to signals downloaded from 83 deg East.


TATASKY & STAR CHANNELS

The 83 degrees East orbital slot provides Ku Band signals for the TataSky DTH platform.

It also provides C-Band capacity for Doordarshan, ETV, Zee & several independent channels downlinked to Cable TV networks.

The GSAT-30 will provide superior signal strengths for all these services.


ISRO 2020

ISRO launched the GSAT-31 last year. The GSAT-30 joins 18 other ISRO satellites functioning in orbit.

2020 will be a busy year for ISRO - 25 missions including Chandrayaan 3 and Gaganyaan mission are scheduled this year. n