If the docks have AC power all along them, have you considered using BPL of some sort? I have many docks in my area asking about internet service, and many times 2.4 ghz across water is a fun experience. I know some companies such as Tendnet make a wireless 2.4 AP that derives it's Internet source through BPL. I have such a unit setting on my shelf for testing, but have not tried yet.
Scott ---------- Original Message ---------------------------------- From: Rogelio <scubac...@gmail.com> Reply-To: scubac...@gmail.com, WISPA General List <wireless@wispa.org> Date: Fri, 01 May 2009 16:45:18 -0700 >I've got an interesting interference problem in a marine area, and I was >hoping to get some feedback on it. > >Every week or so, something evil on 2.4 GHz comes through and >drastically raises the noise floor for about a day (an analysis showed >me like -50 dBm), thus knocking off everyone in the boat dock area who >is using that AP. > >I was thinking about the following type of solution and wanted to get >some feedback: > >--on each dock (9 total), have two dual radios >--mesh them on an available 5.8 GHz channel (this band is not currently >a problem) >--put in a 2.4 GHz panel antenna on each end (maybe a 19 dBi one that >gives, say, a 30 degree X 30 degree beam coverage). 7 dBm + 19 dBi = 36 >dBm EIRP for ISM band in U.S. >--have panels on each radio pointing in towards the middle dock area >(boats in the middle would have redundant coverage. Boats on the far >edge would likely only be covered by the distant AP) >--cover each dock with two channels, so if one channel is down, another >one is an option (or possibly the same channel on a different polarization) >--possibly use band filters (assuming I know which band is the problem >child) > >Any help would be greatly appreciated. I'm quite new to figuring out RF >problems like this. > > >-------------------------------------------------------------------------------- >WISPA Wants You! Join today! >http://signup.wispa.org/ >-------------------------------------------------------------------------------- > >WISPA Wireless List: wireless@wispa.org > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ >--- >[This E-mail scanned for viruses by Declude Virus] > > Wireless High Speed Broadband service from Info-Ed, Inc. as low as $30.00/mth. Check out www.info-ed.com/wireless.html for information. -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
