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Launch Date
15.04.2010
GSAT-4 was the nineteenth geo-stationary satellite of India built by ISRO and fourth in the GSAT series. GSAT-4 was basically an experimental satellite with the following new technologies intended to be tested:
  • Electric Propulsion System
  • Bus Management Unit
  • 1553 Bus for Data Communication
  • Miniaturised Dynamically Tuned Gyros
  • 36 AH Lithium Ion Battery
  • 70 V Bus for Ka band TWTAs
However, GSAT-4 was not placed in orbit as GSLV-D3 could not complete the mission.

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