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Date:      Mon, 3 Feb 2003 18:09:29 +0000 (GMT)
From:      Andrew Back <andy@smokebelch.org>
To:        Kevin Oberman <oberman@es.net>
Cc:        Wesley Morgan <morganw@chemikals.org>, paul beard <paulbeard@mac.com>, Randy Bush <randy@psg.com>, FreeBSD Laptoppers <freebsd-mobile@FreeBSD.ORG>
Subject:   Re: 11g 
Message-ID:  <20030203175404.O16374-100000@plum.flirble.org>
In-Reply-To: <20030203174115.04B2F5D04@ptavv.es.net>
References:  <20030203174115.04B2F5D04@ptavv.es.net>

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802.11a may be a better option in areas that suffer pollution in the
2.4GHz ISM band. But don't forget that your unlikely to get the same
range running at 5GHz as you would at 2.4GHz. As a general rule as
frequency increases range decreases.

Andrew

On Mon, 3 Feb 2003, Kevin Oberman wrote:

> > 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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