"A" Band

The 5Gig WiFi band has interesting oddities.
One is the number of AdHoc sites..One which is
universal is "Free Public Internet." Connect
to this one with XP and you can automatically
be in AdHoc mode without even being aware.
So why worry, you ask?? The AdHoc site now
is almost completely into your "laptop."
It's almost as if he's sitting at your computer.
Another is "HPsetup." Almost found around
the world..Drifts around..although apparently
harmless..And there are variations in the fore-
going..5 Gig RF bounces around to a much
greater extent than 2.5, and if you're trying to
locate a site, it's hard work. It's here, but move
a coupla cm. and it's gone. Commentary??
Cheers!!!

On Tue, 27 Mar 2007 19:29:18 -0700, "jbyrd" <(E-Mail Removed)>
wrote:

>The 5Gig WiFi band has interesting oddities.
>One is the number of AdHoc sites..One which is
>universal is "Free Public Internet." Connect
>to this one with XP and you can automatically
>be in AdHoc mode without even being aware.
>So why worry, you ask?? The AdHoc site now
>is almost completely into your "laptop."
>It's almost as if he's sitting at your computer.
>Another is "HPsetup." Almost found around
>the world..Drifts around..although apparently
>harmless..And there are variations in the fore-
>going..5 Gig RF bounces around to a much
>greater extent than 2.5, and if you're trying to
>locate a site, it's hard work. It's here, but move
>a coupla cm. and it's gone. Commentary??
>Cheers!!!

It's a lame Microsoft bug (which still hasn't been fixed). See:
<http://blogs.chron.com/techblog/archives/2006/09/free_public_wif.html>
<http://www.nmrc.org/pub/advise/20060114.txt>
I've seen the "free public WiFi" SSID appear dozens of times at Fry's
and Circuit City, as their demo machines seems to be rather common
victims. It had me confused for a while until I read the explanation.
As for 5.7GHz propogation, y'er mostly correct. It's more directional
and subject to reflection problems. However, the disappearing
peer-to-peer client effect isn't because of these. It's because most
such devices are dual band and time share between bands. If there's
little traffic on 5.7GHz, the client will give it a smaller time slot.
The result is that it appears to come and go until you're actually
connected. Note that I said client, not access point. Most better
access points have dual radios, one for each band, and do not switch
bands.

--
# Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060
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