We installed a new area 4 weeks ago.
installed a routerboard 153 with SR2 and SR9 in it with 2.3.39OS.
Most customers are close to the 8 DB omni with is 75' in
the air. we are doing 2.4 only right now, but the 900 SR9
is active.

I have customers with anywhere from a -53db to -77db
and all was good... until 2 weeks ago. signal levels
to all users fluctuates. performance to all users will
degrade 15db for anywhere from a few minutes to days,
then back to normal levels again.
We have changed out all cabling,antenna and power
inserter.

trying to get another routerboard 153 in to change it out.
I have removed the sr9 thinking maybe too much power
consumption, still same results. I have changed channels several
times, but i don't see any usage on any of the frequencies.

anybody have any clues?