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Date:      Mon, 03 Feb 2003 09:41:15 -0800
From:      "Kevin Oberman" <oberman@es.net>
To:        Wesley Morgan <morganw@chemikals.org>
Cc:        paul beard <paulbeard@mac.com>, Randy Bush <randy@psg.com>, FreeBSD Laptoppers <freebsd-mobile@FreeBSD.ORG>
Subject:   Re: 11g 
Message-ID:  <20030203174115.04B2F5D04@ptavv.es.net>
In-Reply-To: Your message of "Sat, 01 Feb 2003 19:12:04 EST." <20030201191005.P27990@volatile.chemikals.org> 

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> Date: Sat, 1 Feb 2003 19:12:04 -0500 (EST)
> From: Wesley Morgan <morganw@chemikals.org>
> Sender: owner-freebsd-mobile@FreeBSD.ORG
> 
> On Sat, 1 Feb 2003, paul beard wrote:
> 
> > Randy Bush wrote:
> > > which/when support for 802.11g?  apple's base station seems pretty
> > > attractive, yes?
> >
> > They're not alone: LinkSys offers 11g gear, as well.
> 
> I'd rather see 802.11a myself. I know the industry talking heads are
> praising 802.11g for its "backwards compatability", but I think the dual
> 11a/11b AP's are "backwards compatible" enough to warrant MOVING to a new
> uncluttered spectrum that is (IIRC) reserved for wireless networks.

I'd love to see this 11a support, too. I really have little interest in
'g' as it is in unprotected spectrum in the unlicensed 2.4 GHz
band. It's only a matter of time until this spectrum becomes useless
for data communication. I have friends who bought cordless phones and
discovered that they lost their net every time they made a call.

Worse, new industrial lighting technology (if it is commercially
viable) will legally demolish all 2.4 GHz communications (including
cordless phones) with no recourse.

I suspect the cries of joy over the compatibility of 'b' and 'g' is
partly because systems running either are likely to become obsolete
within a couple of years so they can sell new 'a' hardware to
everyone.

> Not like I have ever needed more than 11 mbit to my laptop...

Neither do I, but I work a computer show every year that has offered
WiFi to the entire show area including ballrooms, a large exhibit
hall, and lots of small meeting rooms. There are a number of
complications in this, but own is that the 11 Mb available is shared
by all transmissions at single access point. This requires the use of
more APs, especially in the exhibit area. Having 51 MHz to share would
greatly simplify this. That's why we started offering 802.11a last
year. 

R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman@es.net			Phone: +1 510 486-8634


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