Wireless 20km

RouterOS General
1

i’m running a wireless link of 20km.
When its on 802.11(security profile=default) im getting a lot of disconnections and the ping is up to 200ms, Nv2 solve the issues.ping is 1ms. (see the log)

AP - v6.47.9
Station - v6.47.9

Im wondering could be the distance reason for that?
AP.PNG

2

any?

3

200 ms vs. 1 ms are a huge difference, what is the CCQ value when it works in 802.11 mode?

4

neam pojma

that how ccq works , need to send some data through to be able to get the max of ccq, by using 802.11 i cant even ping

  • nv2 details:
    ccq 60/60
    tx/rx rate 144.4
    signal to noise 45dB
    signal 56dBm

Was working fine on 802.11 for at least two years

5

-56 dBm sounds reasonable, 45 dB SNR means there is no interference (noise floor -101 dBm looks like receiver noise). So are you sure the same frequency channel is used in 802.11 mode like in the Nv2 mode? In particular, maybe you use some channel extensions (40/80/160 MHz) and thus you catch interference from a neighbour link which wasn’t there before, and which is unseen in Nv2 mode because Nv2 only uses a 20 MHz channel?

6

So are you sure the same frequency channel is used in 802.11 mode like in the Nv2 mode?

100%

In particular, maybe you use some channel extensions (40/80/160 MHz) and thus you catch interference from a neighbour link which wasn’t there before, and which is unseen in Nv2 mode because Nv2 only uses a 20 MHz channel?

at the moment is 20/40 xx, Do u want me to try 20MHz only?

i forgot one thing , i’m playing with superchannel

7

You wrote it had been working for two years but haven’t mentioned any change of the settings; was superchannel in use all that time? What particular aspect of superchannel are you using, non-standard channel center frequency or non-standard channel width?

In any case, I would start from a 20 MHz channel and try more than one center frequency to see whether there is no interference.

8

nothing has been changed. just i’ve changed to nv2.

non-standard channel center frequency or non-standard channel width?

it’s running on 5285.

9

So it was working on 802.11 for two years, then you’ve changed to Nv2, and once you!ve switched it back to 802.11, it doesn’t work any more? No other changes?

10

absolutely yes.

from now i’ll be starting changing other parameters.