this is not height problem its a HT chain problem

image showing is client device connected with mikrotik ap (R52Hn) when i place this device in above 500 Meter distance its not connecting i place this in 50Meter distance it connecting.i found the problem is HT chain . RB 711-2Hn is a single chain board it have ch0 connecter only. but in the status ...

any solution?

i have same problem,how did you solve this problem?