RB411AH + XR9 - problem ch6

RouterOS Wireless Networking
1

I have a WDS link, nstrem, 5 dBi antennas, 2 RB411AH@680MHz (firmware 3.25) with 1 Ubiquity XR9 on each, they don’t connect at channel 6.

If I use BandWith 10MHz, 20 MHz,B,G, system connects without problems, if I select a 5 MHz bandwith I work with no problems at 907Mhz(ch4), 912MHz(ch5) and 922MHz(ch7) but if a select 5MHz BW at 917MHz (channel 6) is impossible to connect, then if I change to other channel or BW all works. (same in laboratory and outside)

I’ve tested “the air” with a spectral analizer and I realized that at channel 6 (5MHz) it doesn’t work, but yes at other BW’s

I have change all the Roterboards and wifi cards and problems go on.

¿any idea? thanks

2

Probably someone broadcasting on that channel. You won’t see Canopy, Alvarion, etc, but they will interfere.

900MHz is a different beast.

3

Thanks oldman for the answer, I think 99% problem is probably from mikrotik sw, at least that i’ve tried 3.24 y 3.25, I will wait some improvements…

I’ve tried with a old RB532 and all is coneccting perfectly (same configuration and radios).

4

Dunno. Just FYI, I’m running on channel 6 in B/G mode, was in 5MHz mode until recent competition fired up and caused interference. 3.20 AP, 3.22 clients.

Its always nice to get that phone call first thing in the morning telling you a link that has been stable for months is down…

5

Hey Glen that was me calling you :stuck_out_tongue:


Glad to see your still on the fourms, |So how did you fix that problem?

6

Been working too much lately.

Someone put up a new 900MHz AP, knocked out my customers. I changed everyone to B/G mode, 90% of the time they connect at B speeds and it seems stable.

7

what type of equipment knocked you out?