Big difference in the RX and TX signal rate

RouterOS Wireless Networking
1

Hello!

I have different APs on my network (all NetMetal) with hundreds of CPEs (All double chain Mikrotik made). All 5 GHz
I’ve noticed that after very high wind days on some CPEs I got very big difference in the RX and TX signal rate. Not all CPEs on AP have this problem.
Signals went from -50/-48 to -80/-48.
Problem occurred on different CPEs on differents APs. I tried software upgrade (both CPEs and APs), double check all the chains, change frequencies, change protocols, doing again the radio calibration but problem didn’t disappear.
I had to replace all the CPEs with this problem.
CPE with this problem: DynaDish, Disc Lite, LHG.

What could be the cause?

2

Do you clear light of sight from the effected CPE’s to the AP’s, is there by any chance say branches of tree(s) or growing forest in the freznel zone area which move in the high wind?
https://www.proxim.com/en/products/knowledge-center/calculations/calculations-fresnel-clearance-zone

3

I have very good line of signal.
After CPE replacement the signal went OK.
The problem remains on the old CPE with difference in the RX and TX signal rate

4

Did you check for any signs of water ingress? Or, after a while when water already dried, any oxidation/dust deposits?

5

Didn’t cheked it. Sorry.