Giant Metrewave Radio Telescope GMRT is a very versatile instrument for investigating a variety of radio astrophysical problems ranging from nearby Solar system to the edge of observable Universe situated near Pune in India.
http://www.ncra.tifr.res.in/ http://www.gmrt.ncra.tifr.res.in/ http://www.space-india.org/gallery/main.php?g2_itemId=9511
GMRT(Giant Metra wave Radio Telescope) located near Pune(Maharashtra) India
I persume you mean the Giant Meterwave Radio Telescope (GMRT) in India. The way a received signal is processed is equivalent to the working principle of a double-super-heterodyne-receiver. That means that a received signal is filtered, mixed with another frequency and filtered again to downscale it for transport from telescope antenna to the observation room...here it is mixed and filtered again so that the signal is be downconverted for recording and data analisys.