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GSat 5 (Insat 4D)

Insat 4D (GSAT 5) [ISRO]

GSAT-5 / INSAT-4D is a C-band and Ext C-band satellite, carrying 18 transponders. Of these, 12 transponders will operate in the Normal C-band with wider coverage in uplink and downlink to cover Asia, Africa and Eastern Europe/Zonal coverage. 6 transponders will operate in Ext C-band and have India coverage. The option of incorporating L-band is under consideration. The satellite wass slated for launch on board GSLV Mk.2(1).

INSAT-4 series is planned to have seven satellites, INSAT-4A through INSAT-4G with INSAT-4D as a spare. The transponder capacity of this series has been worked out after evaluating the requirement projected by different uses/user departments. It is planned that, by 2007, INSAT system will have about 250 transponders in various bands catering to a demand of up to 11 Giga Bits Per Second (GBPS) capacity.

Insat-4D was cancelled and rebuilt as the GSat-5P spacecraft.

Nation: India
Type / Application: Communication
Operator: Insat
Contractors: ISRO
Equipment: 12 C-band transponders, 6 extended C-band transponders
Configuration: I-2K (I-2000) Bus
Propulsion: 440 Newton thrust liquid apogee motor
Power: 2 deployable solar arrays, batteries
Mass: 2250 kg
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
GSat 5 (Insat 4D) - Sr GSLV Mk.2(1)


  • ISRO Website
Further Insat missions:
Further GSat missions:

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