wireless distance

hello! i’m new in this world and i have a question,
somebody knows what is the maximum distance where two ap can´t see each other in wds mode? and de power tx??
my aps are 411AR.
thank you!

All depends on LOS (Line of sight), antennas, radio cards and frequency. i’ve rb433uah with r52+29dBi parabolic dishes and link between em is over 12km and still have CCQ 100% (-66/-68).