i have an AP on a tower that is fully equiped with different networks for other providers.i had sectors which are 180 degrees
but i get customers who connect with a good signal at -75 but the ccQ is very low as 9765kbp and then after about 5 mins it changes to ccq 14387kbp.
i then changed the sectors to 90 degrees the same happens.
can it be the frequencies or what.
am using xr5 cards with supported data rates.

you have provide the correct information...
ccq should in percentage ..

Have you tried to use a smaller channel. 5GHz-10MHz

ok this is the information.

signal strenght -78
tx signal strength -66
signal to noise 32
tx/rx ccq 76/38
p throughput 16371

this is nano from client connecting to mikrotik ap.

Please post a site survey scan form AP and from Nanostation.

what your minipci in mikrotik ap?

am using xr5 minipci cards