Rx levels differ too much between main and diversity antennas.
When you make a commisionning, the BTS make a check of ROSS of feeder.
So, if you have “RX level …” you have a problem on feeder or copler or antenna or LNA
On MMI, you have RSSI comparaison value, you can see difference between main and div.
“RX level…” appears when difference is superior at 3 or 4. I don’t remember.