Hello there my friends.

Lately, since my network is pretty stable now since we've changed some hardware, I've been messing a bit with one of my locations (station) and noticed that users are having a lot of bandwidth problems, I'm guess because of the frequency overflood.

That station is located at the highest building in our city, which is sadly used by many other operators too, again sadly, with more than 10 of them.
Now, I need your suggestions on how to put the least used frequency on 3 sector antennas we are using there.

Problem is that our sector antennas are working on 2.4b/g ghz.
We are using RouterBoard 800 on that location and often everything seams fine but often people can't even get to our Hotspot login page due to bandwidth limit from I guess, frequency problems and noise.

I m not too much educated in it, but should I use snooper to see which frequency is used there the most or what ?

I appreciate your help,
Thanks in advance,
Alex

You must use "Frequency-Scan", not snooper, to see free channels.
You must also scan at different channel width (5,10,20MHz).
You can also use the mikrotik spectrum analyzer at http://wiki.mikrotik.com/wiki/Spectrum_analyzer
The best is to use a true spectrum analyzer.

It seams that some frequencies can't be seen by user antennas.
For example:

Frequency 2462 can't be seen by users. There are some also too.
Now, I m wondering if there is a list of "normal" frequencies which users can see, like the real channels that I can use.

Here is the list of the frequencies I can use.





The last 2 can't be seen by users I think and I have no idea why. Is this a real picture of all channels or ?

Thanks in advance,
Alex

This tool should be in your toolbox:
http://www.metageek.net/products/wi-spy

I wouldnt dare to operate at 2,4 in such polluted
areas. There are too few channels. Your service
is driven by pure chance.

take a look at this http://en.wikipedia.org/wiki/List_of_WLAN_channels

Thanks Rodolfo for the wiki link, very useful and will carefully read it.
@Ste, we have recently bought Spectrum Analyzer USB thingy, works great just past few days we didn't have access to a building roof so couldn't properly use it there. I ll send my technicians tomorrow to scan it all.

And yes, I will try to explain that to my boss and switch to 5ghz there. Sadly like you said, selling a service from there is a pure luck and any interference from other providers can make it too bad.

Again, thanks MT community for providing help, would be hard without you.

Best wishes,
Alex