Yes, as Djemal mentioned, we could only check in Tx Path
However, the threshold should be defined in 3 ranges: 1.3 - 1.5 and > 1.5
In ALU GSM, Twin Trx TGT card can transmit in both side , so we can measure both of them
However, we always get 1.1 value in most of sites, and I don't trust them so much.