During this year also, the consolidation of the GMRT has continued. The installation of the 1420MHz feed and the Local Oscillator Synthesizers (SYN2) covering 600 to 1800MHz has been completed on all but 2 of the GMRT antennas. Installation of updated Feed Positioning System (FPS) has also been completed on all but 3 antennas. A prototype of an improved FPS unit with nonvolatile RAM that makes the existing differential encoder look like an absolute encoder, has been developed. A prototye of the 50MHz feed for the GMRT antennas has been developed and is being tested. Work has started on a prototype of the battery based Auto stowlock system that can park the GMRT under high wind conditions even in the absence of MSEB power. A 100 Mbps full duplex fibre optic link connecting GMRT, Khodad with NCRA, Pune has been designed and commissioned.
In addition to routine maintenance of the GMRT systems, a project of characterising and optimising the performance of all the subsystems of all the GMRT antennas has started and is continuing. Some of the sub systems that have been giving problems have been improved to increase the relaiblilty of the system. The radio frequency interference environment around the GMRT continues to be a source of concern and is being regularly monitored and studied.