From fork-admin@xent.com Wed Oct 2 11:48:11 2002 Return-Path: Delivered-To: yyyy@localhost.example.com Received: from localhost (jalapeno [127.0.0.1]) by jmason.org (Postfix) with ESMTP id 0788616F1C for ; Wed, 2 Oct 2002 11:47:41 +0100 (IST) Received: from jalapeno [127.0.0.1] by localhost with IMAP (fetchmail-5.9.0) for jm@localhost (single-drop); Wed, 02 Oct 2002 11:47:41 +0100 (IST) Received: from xent.com ([64.161.22.236]) by dogma.slashnull.org (8.11.6/8.11.6) with ESMTP id g923qEK24441 for ; Wed, 2 Oct 2002 04:52:14 +0100 Received: from lair.xent.com (localhost [127.0.0.1]) by xent.com (Postfix) with ESMTP id 212C02940F1; Tue, 1 Oct 2002 20:52:03 -0700 (PDT) Delivered-To: fork@example.com Received: from nycsmtp1out.rdc-nyc.rr.com (nycsmtp1out.rdc-nyc.rr.com [24.29.99.226]) by xent.com (Postfix) with ESMTP id 8822629409C for ; Tue, 1 Oct 2002 20:51:14 -0700 (PDT) Received: from damien (66-108-144-106.nyc.rr.com [66.108.144.106]) by nycsmtp1out.rdc-nyc.rr.com (8.12.1/Road Runner SMTP Server 1.0) with ESMTP id g923pH6d025958; Tue, 1 Oct 2002 23:51:17 -0400 (EDT) From: "Damien Morton" To: "'Ian Andrew Bell'" , "'Eugen Leitl'" Cc: , Subject: RE: Wifi query Message-Id: <007e01c269c6$85605800$6401a8c0@damien> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-Msmail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.3416 Importance: Normal In-Reply-To: <32BAD95E-D5B6-11D6-AD37-0030657C53EA@ianbell.com> X-Mimeole: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: fork-admin@xent.com Errors-To: fork-admin@xent.com X-Beenthere: fork@example.com X-Mailman-Version: 2.0.11 Precedence: bulk List-Help: List-Post: List-Subscribe: , List-Id: Friends of Rohit Khare List-Unsubscribe: , List-Archive: Date: Tue, 1 Oct 2002 23:48:02 -0400 X-Spam-Status: No, hits=0.5 required=5.0 tests=AWL,FROM_ENDS_IN_NUMS,IN_REP_TO,KNOWN_MAILING_LIST, QUOTED_EMAIL_TEXT,T_OUTLOOK_REPLY version=2.50-cvs X-Spam-Level: That's what the manual said - a diversity antenna. Why wouldn't it work well with one omni and one directional antena? IANAEE, but doesn't that count as diversity? > -----Original Message----- > From: Ian Andrew Bell [mailto:fork@ianbell.com] > Sent: Tuesday, 1 October 2002 23:23 > To: Eugen Leitl > Cc: Damien Morton; tomwhore@slack.net; fork@example.com > Subject: Re: Wifi query > > > > I think what you're looking at with the dual antenna mounts is a > diversity antenna. It won't work too well with one hooked up to the > pringles can and the other hooked up to a regular rubber duck. > > -Ian. > > > On Tuesday, October 1, 2002, at 01:04 PM, Eugen Leitl wrote: > > > > > 1) reinforced concrete shields like the dickens; wood lots less so > > 2) line of sight is best (o'really?) > > 3) if you want to boost range, use directional aerials, not omnis > > > > Direct line of sight (no trees, no nothing) can give you ~10 km with > > well > > aligned directional aerials (and, say, no sleet, no > locusts, nor rain > > of > > blood). If you want to fan out afterwards, use a bridge of a > > directional > > coupling to an omni. 802.11a should shield within building > lots more > > than > > 802.11b, ditto line of sight with lots of precipitation inbetween. > > > > On Tue, 1 Oct 2002, Damien Morton wrote: > > > >> I just bought a LinkSys BEFW1154v2 Access Point Router for $150 > >> (http://www.linksys.com/products/product.asp?grid=22&prid=415). Im > >> doing some dev work on a Symbol PocketPC device with built in > >> 802.11b. > >> > >> In this 600 sq ft pre-war New York apartment it goes > through 2 or 3 > >> walls, into the hallway and halfway down the first flight > of stairs > >> before it loses contact with the base station. That's less than 50 > >> ft. Inside the apartment, it works just fine. > >> > >> I just did some further testing - through 2 brick walls > the range is > >> about 25 feet. The signal also goes through the roof pretty much > >> unimpeded. > >> > >> That said, the Symbol device doesn't have an antenna to > speak of, and > >> I > >> havent done any tweaking to try to extend the range. > >> > >> The Linksys unit has two antenna mounts - you could leave one as an > >> omni > >> antenna while hooking up a directional antenna to the other. > >> > >> You might find that you have to use several access points and/or > >> repeaters to get the coverage you want. >