INSAT-4A is the first one in the INSAT-4 Satellites series, providing services in the Ku and C band frequency bands. At the time of launch, it was the heaviest satellite India had produced and launched. The Ku transponders cover the Indian main land and C-Band transponders cover an extended area. It has a dozen Ku transponders and another dozen of C-band transponders. This spacecraft is placed at 83°E along with INSAT-2E and INSAT-3B, by Ariane launch vehicle (ARIANE5-V169)
|Launch mass||3,081 kilograms (6,792 lb)|
|Dimensions||2.8 x 1.7 x 2.0 m|
|Start of mission|
|Launch date||22 December 2005, 22:33UTC|
|Launch site||Kourou ELA-3|
|Longitude||83° East (Coordinates: )|
|Inclination||74 degrees|
|Band||12 Ku band|
|TWTA power||140 & 63 watts|
|EIRP||51 & 38 dbW|
INSAT - 4A is a communication satellite intended for providing high quality television, telecommunication, broadcasting services and is the first satellite to be launched in the INSAT-4 series.
INSAT 4A was launched by an Ariane 5, produced by Arianespace, on 22 Dec 2005 at 4.22 am IST from Kourou, French Guiana. It was placed into a Geosynchronous Transfer Orbit (GTO), 30 minutes after lift-off in 3-axis stabilized mode, with a perigee of 859 km and an apogee of 36,055 km. Its co-passenger on board was Meteosat-9 of EUMETSAT.