in one cell there is very high interference in uplink. Interference band 5 is high, Cause HO due to quality in uplink is over 50%, in downlink is OK. Call drop also increased. So, I assume is pure interference. BCCH planning is OK in the area. We made drivetest measurement, we didn’t noticed anything suspicious. After changing TREs and combiners, still the same. But, near the site there is a military base. Could be that caused from jammers or something else? What should we check more? How to measure unwanted signal. We don’t have frequency scanner.
All frequencies from the band our operator uses were interfered. We tried with another operators frequencies and no interference found. After some talks with military base found that they’ve switched on the jammer.