Hi I am Manoj Kumar(NSN)Patna. BTS OPERATION DEGRADED Rx levels differ too much between main and diversity antennas.This alarm is the very critical for Nokia Ultra BTS.I am face 50 site this alarm. I am handling this alarm.First all of check VSWR after that check ALL point like Gsm port, concocter,Trx,bb2f,cnt cable,combiner, multi-coupler,RSSI value , Duplexer,and last thing sector change .