130 lines
4.8 KiB
Plaintext
130 lines
4.8 KiB
Plaintext
From fork-admin@xent.com Wed Oct 2 11:48:11 2002
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id g923pH6d025958; Tue, 1 Oct 2002 23:51:17 -0400 (EDT)
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From: "Damien Morton" <dm-temp-310102@nyc.rr.com>
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To: "'Ian Andrew Bell'" <fork@ianbell.com>,
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"'Eugen Leitl'" <eugen@leitl.org>
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Cc: <tomwhore@slack.net>, <fork@example.com>
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Subject: RE: Wifi query
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Date: Tue, 1 Oct 2002 23:48:02 -0400
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That's what the manual said - a diversity antenna.
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Why wouldn't it work well with one omni and one directional antena?
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IANAEE, but doesn't that count as diversity?
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> -----Original Message-----
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> From: Ian Andrew Bell [mailto:fork@ianbell.com]
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> Sent: Tuesday, 1 October 2002 23:23
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> To: Eugen Leitl
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> Cc: Damien Morton; tomwhore@slack.net; fork@example.com
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> Subject: Re: Wifi query
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>
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>
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>
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> I think what you're looking at with the dual antenna mounts is a
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> diversity antenna. It won't work too well with one hooked up to the
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> pringles can and the other hooked up to a regular rubber duck.
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>
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> -Ian.
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>
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>
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> On Tuesday, October 1, 2002, at 01:04 PM, Eugen Leitl wrote:
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>
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> >
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> > 1) reinforced concrete shields like the dickens; wood lots less so
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> > 2) line of sight is best (o'really?)
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> > 3) if you want to boost range, use directional aerials, not omnis
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> >
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> > Direct line of sight (no trees, no nothing) can give you ~10 km with
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> > well
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> > aligned directional aerials (and, say, no sleet, no
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> locusts, nor rain
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> > of
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> > blood). If you want to fan out afterwards, use a bridge of a
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> > directional
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> > coupling to an omni. 802.11a should shield within building
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> lots more
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> > than
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> > 802.11b, ditto line of sight with lots of precipitation inbetween.
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> >
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> > On Tue, 1 Oct 2002, Damien Morton wrote:
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> >
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> >> I just bought a LinkSys BEFW1154v2 Access Point Router for $150
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> >> (http://www.linksys.com/products/product.asp?grid=22&prid=415). Im
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> >> doing some dev work on a Symbol PocketPC device with built in
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> >> 802.11b.
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> >>
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> >> In this 600 sq ft pre-war New York apartment it goes
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> through 2 or 3
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> >> walls, into the hallway and halfway down the first flight
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> of stairs
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> >> before it loses contact with the base station. That's less than 50
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> >> ft. Inside the apartment, it works just fine.
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> >>
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> >> I just did some further testing - through 2 brick walls
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> the range is
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> >> about 25 feet. The signal also goes through the roof pretty much
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> >> unimpeded.
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> >>
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> >> That said, the Symbol device doesn't have an antenna to
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> speak of, and
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> >> I
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> >> havent done any tweaking to try to extend the range.
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> >>
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> >> The Linksys unit has two antenna mounts - you could leave one as an
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> >> omni
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> >> antenna while hooking up a directional antenna to the other.
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> >>
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> >> You might find that you have to use several access points and/or
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> >> repeaters to get the coverage you want.
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>
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