AP Channel Bandwidth Question - 5.2 GHz

I have a 5.2 GHz AP that seems to have a wider channel bandwidth according to a spectrum analyzer.

It’s running 7.2.9 code, center carrier is 5275. When comparing it to other AP’s, it seems to have about +/- 5 MHz more bandwidth occupied.

All other AP’s seem to fall off to half power at about 15 MHz from the center…this one is happening at 20 MHz from center. This was causing problems for adjacent channel AP’s in my cluster.

Has anyone ever seen this occur on an AP :?: ?