Isro races to fix glitch in navigational satellite so that it can be launched in time

The Indian space agency is deliberating the ways and means of setting right a glitch in its fourth regional navigation satellite with minimum effort so that it can be launched early, said an official. The 1,425kg satellite - Indian Regional Navigation Satellite System-IRNSS-1D - was supposed to be launched on the evening of 9 March by an Indian rocket called Polar Satellite Launch Vehicle (PSLV-XL). The Indian Space Research Organisation (Isro) on 4 March, however, deferred the launch after it discovered that one of the telemetry transmitters in the IRNSS-1D was not working properly. More

(Source: Firstpost - Mar 7)