Prolonged signal fade-out and effect of antenna height on the performance of a line-of-sight microwave link in a hilly terrain

Experimental investigations are carried out to study prolonged signal fade-outs of Tiruttani-Tirupati LOS microwave link and the effect of Fresnel zone clearance on the link performance. The amplitude measurements were recorded for the Tiruttani-Tirupati, India, microwave link operating at 7.6 GHz on a twenty four hour basis, using an omniscribe pen recorder with a time constant of 100 msec