Speaking of self inflicted interference.... http://www.enterprisenetworkingplanet.com/nethub/article.php/3765946/Wi-Fi-Detect-and-Avoid-Self-Inflicted-Interference.htm
Hope it helps! marlon ----- Original Message ----- From: "RickG" <rgunder...@gmail.com> To: "WISPA General List" <wireless@wispa.org> Sent: Monday, February 23, 2009 10:38 AM Subject: Re: [WISPA] tower issue >I took it he meant that as well. In further thought, I suppose the high >gain > omni is also picking up noise & interference from further out as well. > Many > times, I can see several of my towers from anywhere in the county. Heck, I > probably have self-interference! Buying a company is like buying a used > car, > you end up with somebody elses problems! > So, what about sector arrays with downtilt? > Thanks! -RickG > > On Mon, Feb 23, 2009 at 8:47 AM, Rick Harnish <rharn...@wispa.org> wrote: > >> Actually, I disagree with Marlon on this one. The higher the gain on the >> antenna, the narrower the beamwidth. Therefore, many times your main >> lobe >> is shooting over the top of your clients. We have had better success >> with >> lower gain omni's because the beamwidth is wider and more usable signal >> reaches the client radios. I guess Marlon is correct if he means that >> the >> main lobe is shooting above (up) the clients, if that is what he meant, >> then >> he is correct. >> >> Rick >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of RickG >> Sent: Monday, February 23, 2009 12:24 AM >> To: WISPA General List >> Subject: Re: [WISPA] tower issue >> >> Marlon, >> >> I was thinking about what you said about high gain omni antennas sending >> more signal UP. With respect to direction, what's the difference between >> between a high gain unit and a lower gain unit? >> >> -RickG >> >> On Sun, Feb 22, 2009 at 10:34 PM, Marlon K. Schafer >> <o...@odessaoffice.com>wrote: >> >> > Not sure if it's related or not, but high gain omni antennas are >> > usually >> a >> > great big no no. They tend to send more signal UP than in the >> > direction >> of >> > the customers. >> > >> > I'd replace it with an 8 or 9 db unit just on principal. You'll >> > probably >> > find that most customers will actually get a BETTER signal. >> > >> > laters, >> > marlon >> > >> > ----- Original Message ----- >> > From: "RickG" <rgunder...@gmail.com> >> > To: "WISPA General List" <wireless@wispa.org> >> > Sent: Sunday, February 22, 2009 7:23 PM >> > Subject: [WISPA] tower issue >> > >> > >> > > OK, here a good one! (aka, how I spent my weekend in a blizzard!) >> > > >> > > One of my towers has a single WARP/StarOS connected to a 5GHz grid >> > > for >> > > backhaul and a 15dBi omni for the local connections. >> > > On Saturday, after making some small changes, I rebooted it and it >> would >> > > not >> > > allow me to connect via wireless any longer - or my customers :( >> > > So, I go to the tower, connect up via ethernet and everything is a >> usual >> > > but >> > > I see all associations but only a few client have ip addresses. I can >> > ping >> > > the few clients but the packet loss is huge 80-90%. I then reload my >> > > backup >> > > but still get the same thing. I try changing channels, but still the >> > same. >> > > I >> > > then systematically begin replacing parts starting with the radio >> > > card. >> > > Eventually, I replaced EVERYTHING but still have the problem. One >> > > note: >> > > occasionally, twice of maybe three times, after a reboot, all came >> > > back >> > > normal. The third time, I left well enough alone for now but of >> > > course, >> > > you >> > > know what will happen the next time I reboot. >> > > >> > > Any ideas??? >> > > >> > > -RickG >> > > >> > > >> > > >> > >> >> ---------------------------------------------------------------------------- >> ---- >> > > 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/ >> > >> > >> > >> > >> > >> >> ---------------------------------------------------------------------------- >> ---- >> > WISPA Wants You! 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