when you make a commissioning of ultrasite there is a check of antenna.
When alarm “rx level is between main and div” there is a problem on the main or div.
In begin, find RSSI COMPARAISON VALUE menu in ULTRASITE manager.
In colonne DIFFERENCE, if you have more than 4 or 5, you have a ross problem. => reason why alarm “rx difference…” coming.
You can also test TRX => TRX test, you have test of main and div.