If I have 3 radios with 120o antenas, to be able to handle more clients than a single omni, what should I do.

a) Have all radios at same frequency and different SSID to fix clients to one sectore where they "see" signal from 2 antenas.

or

b) Have one different freq (if at all avaible) and use same SSID ?

Thanks,

Alex

You should use 3 diferent freq and 3 diferent ssid because of clients. When they scan for network it is much easier for them to see witch sector is better for them than to have 3 x same ssid, it will confuse them and allso be nightmare for you.

I'm afraid of using 3 diferend freq, because I'm in the 2,4GH range and it says you should not use adjacent frequences, so it seams to fill up avaible spectrum. Just one 3rd party radio could mess a sector with few options to shoose a different freq. If it could work with the same freq it seams to me that I have more options to avoid interference from 3rd partys.

In respect to clients, they do not setup there connection by there own. My staff do it, so they could test witch sector/SSID is giving the best signal. So I thing, but still asking as I'm not shure

If you set same freq you will make interfirance to your self. We have 6 basestations on 2.4 with that5 kind of equipment and we use 3 x 120 and same ssid diferent freq and it works great. Same thing on 5.4GHz

That (and security) are the major shortcomings of wi-fi based 2.4ghz.
You'll need to use different frequencies, and 3 sectors will use up almost all 2.4ghz spectrum at your site, spacing them 3 channels apart.

I use Alvarion and Breezecom frequency hopping at 2.4ghz and can have 26 APs at a site using 2.4ghz. I do have about 15 at one site without problems - never had a need for more. Other proprietary systems can synchronize APs to avoid self interference, and synchronization isn't allowed in 802.11. An all MT network could use 5 and 10mhz channels for better spectrum usage. 5.x ghz can have a lot more radios in it than 2.4 also due to bigger spectrum.