70kms P2P link drop signal strength at day time

RouterOS Wireless Networking
1

70kms P2P link(netbo5 with mANT 30 antenna) drop signal strength at day time, during night time from 9pm rssi hit around -45/-46 but during day time rssi drops to -71/-72, Can anyone give me a reasonable reason regarding this issue

2

Isn’t mast or holder moving due to temperature change?

3

I have heard that a such link have had been blocked/exacerbated by open-hearth furnace or sth. similar generating strong and “high” magnetic field from time to time during the production process. Maybe it is similar situation ?

4

Any solution to resolve the issue

5

None if you do not steer clear of it making additional transmission point.

6

Have you change frequency and transmit power…there may be some interfearence in a day time..or is there a cloud between the two point during day time..

7

Is the link passing over water?

8

Had the exact same issue with a pair of 30dbi ubnt rocket dishes and Netmetals, its about 90km

Signal would drop early in the morning and just before dark.

This would happen for 3 days in a row and then work perfectly fine for a month.

Changed the dishes to 34dbi ones the signal still drops now and then but it doesn’t affect the throughput much, clients don’t even notice