Recently in our PLMN we got a huge large no. of conmplaints regarding coverage issue. We checked and found that there is a real coverage shrink in many sites.
There is no big activity in PLMN other than BSC upgradation from S13 to S14.
coverage decreases only because:
1/ you modified the BTS Tx Power Max parameter
2/ there is a physical problem in the BTS (combiner, trx, feeders, antenna)
I guess you already checked n°1 ? So that leaves only n°2. Have you checked it yet ?
regards
pix
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