26km link whit Netbox RB911G-5HPACD-NB => GO DOWN!!!

RouterOS Beginner Basics
1

I have two RB911G-5HPACD-NB
In January 2015 I have this devices linked, 26km Link,
after 30 days working connections problems began

We have interference, so I tried every channel from 5400-5880 MHz
the best channels are 5535 and 5700
Protocols 802.11 and nstreme doesn’t work well, so I use nv2

Finally, I have now the following configuration:
Only-AC
NV2 whit password, 20/40/80MHz eeeC (I have tried 20/40 too)
Channel 5535
distance 26km (precise distance)
tdma-period: 3ms (I have tried 2-4ms too)
framer-policy: best-fit
Signal: min-59 max-65 db

So i get this results:
Protocol: tcp send/receive
Rate: 13MB-TX/ 9MB-RX
Max: 30MB-TX/ 15MB-RX

but after 6-8 hours working, bandwidth go down and pass only 1MB, keep pinging but not bandwidht
I need to reboot this 2 devices to get better again but only for 6-8 hours working

Can you help me please???

2

Try with 20 MHz bandwidth.

3

Thank you :smiley: you are right, but I have only 12/9 mb.
I need 20/10 mb.
What can I do?

4

He already did.
A picture might help…

5

Yes! 20MHz works! but rate 16Mbps up/ 7Mbps down, this is the best estable link, 20/40 or 20/40/80MHz total chaos.

See attached image please.

6

Try with reduce the power to -65 dB and see what result you have.
Ore try other channel

Goodluck