[TriLUG] Wifi performance

[Joseph Mack NA3T]

On Mon, 9 Jan 2006, Greg Brown wrote:

> Yes, try something other then channel three, or download 
> something like netstumbler and search for the least 
> congested channel (1, 6, or 11).  Try not to use "between" 
> channels as they can become quite noisy with chatter from 
> other APs.

agree - look with netstumbler.

the concept of channels for wifi doesn't fit well. A "b" 
card at full bandwidth occupies 3 channels. I "g" card 
occupies 9. You can move the center freq by changing the 
channel, but if there's interference on any of the 9 
channels, you won't change the problem. It's unlikely that 
interference is on only one channel anyhow. If it's 
interference on only one channel, you could reduce your 
bandwidth (iwconfig ?) to the minimum - one channel - (you 
may be able to do this on the wap, but you certainly can do 
it from the client card - iwconfig?) and then change through 
all the channels one by one on the wap.

If it's interference, can you take your setup to the middle 
of a field (you'll need an inverter for the wap) and see if 
that fixes it.

Alternately go try your setup in someone's house that has 
wifi working, exchanging cards, waps till you find the 
culprit.

I don't have any other suggestions though.

Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml 
Homepage http://www.austintek.com/ It's GNU/Linux!