101 lines
4.1 KiB
Plaintext
101 lines
4.1 KiB
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From fork-admin@xent.com Wed Oct 2 11:48:04 2002
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id g923LJGT006774; Tue, 1 Oct 2002 20:21:20 -0700
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Subject: Re: Wifi query
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Cc: Damien Morton <dm-temp-310102@nyc.rr.com>, <tomwhore@slack.net>,
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<fork@xent.com>
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To: Eugen Leitl <eugen@leitl.org>
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From: Ian Andrew Bell <fork@ianbell.com>
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Date: Tue, 1 Oct 2002 20:22:36 -0700
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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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-Ian.
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On Tuesday, October 1, 2002, at 01:04 PM, Eugen Leitl wrote:
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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 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 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
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>> some dev work on a Symbol PocketPC device with built in 802.11b.
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>>
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>> In this 600 sq ft pre-war New York apartment it goes through 2 or 3
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>> walls, into the hallway and halfway down the first flight of stairs
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>> before it loses contact with the base station. That's less than 50 ft.
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>> 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 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 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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