well, we did a 12 mile link over saltwater about six months ago in san diego with 802.11b and a couple of RORs.
You actually have less Fresnel interference over water due to the fact that 2.4Ghz is very well absorbed by the stuff. You will need line of sight at that distance, however, and I would recommend boosting the signal a bit and using a good set of antennae (24dbi parabolic grid). --dgc On Mon, Jul 28, 2003 at 08:02:26AM -0700, Tom Balon wrote: > > As far as distance goes, if they are trying to > setup an AP where the clients are 4 miles away, > over water, I believe them when they said it didn't > work. Timing definitly comes into play at those > distances and unless the AP is on a tower you'd > have lots of reflections. > > If there is a tower on the ridge you describe they > might be able to set up a wireless bridge. Having > the two end points as high as possible above the water > would keep the frensel zone from reflecting too much. > The bridges should easily do 4 miles since they can > compensate for the timing issues. > > -Tom > > > > > --__--__-- > > > > Message: 2 > > Date: Fri, 25 Jul 2003 01:52:45 -0700 > > From: Norm Nelson <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Subject: [BAWUG] 2-4 miles over water? > > > > Hi there, > > > > I'm new to wireless and new to this list, so please > > forgive if this has been > > covered before... > > > > I live on the edge of a saltwater bay and suffer > > through a 24k dialup. I > > know there is 802.11 not far away, over a ridge on > > the other side of the > > bay... and I could probably talk the local ISP/WISP > > into putting a POP in > > across the bay if I can find enough customers on my > > side to sign up for > > service... so I'd like to know if anyone has any > > experience (good or bad) > > with 802.11x links of any length over saltwater... > > my local ISP/WISP has > > told me they tested it and couldn't get it to work > > due to reflections off > > the water and timing issues... but that was a while > > ago, and I don't think > > they tried parabolics or anything extreme... can > > anyone give some insight? > > > > Thanks, > > -Norm. > > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! SiteBuilder - Free, easy-to-use web site design software > http://sitebuilder.yahoo.com > -- > general wireless list, a bawug thing <http://www.bawug.org/> > [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless -- general wireless list, a bawug thing <http://www.bawug.org/> [un]subscribe: http://lists.bawug.org/mailman/listinfo/wireless
