ap bridge using sector

I have board 433ah with 2 cards xr5 , both are ap bridge with difrent frequency one is working fine while the other gives little bad signal at night and ccq of clients are little bad too , how can I inprovem my network, thanks for help

Could be bad antenna, connectors, pigtails, card… Whatever.

… another signal hitting that sector…

I reduced the clients on it and changed the freq , thats work maybe it dont work when there is many clients on it, now it has 5 clients and work fine, thanks for the help