How Do I diagnose WiFi Interference Problems ?

I'm trying to get an AP running in an office building that's got
several small business tenants on each floor. Net Stumbler shows 4
SSID signals (other than mine) strong enough to get a connection, if I
try. I get intermittant connections to my AP.

I assume that if a 802.11b signal can get to me, a cheapo cordless
phone can, also.

Netstumbler sometimes shows me red spikes on my channel. What does
that ell me ?

Is there a handheld scanner that can report non-WiFI sources of
interferance, what to serious WiFi engineers do when asked to survey a
high-density location.







--
Al Dykes
-----------
adykes at p a n i x . c o m

Wireless engineers use a Spectrum Analyzer. They come in lots of forms,
from a dedicated unit (about $3K) looking like an oscilloscope to a PC Card
(on eBay for $50) that has a "survey mode" in addition to operating as a
normal WiFi card.

Ron Bandes, CCNP, CTT+, etc.

"Al Dykes" <(E-Mail Removed)> wrote in message
news:c7dt87$1j1$(E-Mail Removed)...
> I'm trying to get an AP running in an office building that's got
> several small business tenants on each floor. Net Stumbler shows 4
> SSID signals (other than mine) strong enough to get a connection, if I
> try. I get intermittant connections to my AP.
>
> I assume that if a 802.11b signal can get to me, a cheapo cordless
> phone can, also.
>
> Netstumbler sometimes shows me red spikes on my channel. What does
> that ell me ?
>
> Is there a handheld scanner that can report non-WiFI sources of
> interferance, what to serious WiFi engineers do when asked to survey a
> high-density location.
>
> --
> Al Dykes
> -----------
> adykes at p a n i x . c o m

On Thu, 06 May 2004 20:05:40 GMT, "Ron Bandes" <RunderscoreBandes
@yah00.com> wrote:

>Wireless engineers use a Spectrum Analyzer. They come in lots of forms,
>from a dedicated unit (about $3K) looking like an oscilloscope to a PC Card
>(on eBay for $50) that has a "survey mode" in addition to operating as a
>normal WiFi card.

The PC Card software is called SNOOP.
I think there is another one.
Can anyone direct me to where that software can be found?
What is the name of the other one?
Thanks!