Cabling? On Mon, Oct 12, 2009 at 4:05 PM, Randy Cosby <dco...@infowest.com> wrote:
> Well, we replaced the backhaul (osbridge) and get the same readings on > the new one. The old one does not get the same readings when moved to > another location, so it's picking up SOMETHING. Powered down everything > else, same problem. So, someone is slamming me with a ton of signal > near 5875... Now to find out where it's coming from. > > Any recommendations for a 5 gig spectrum analyzer? Ubiquiti airview > looks interesting, but only for 2.4 and 900. Guess I can use the > built-in one in the osbridge, but it's not too fast / granular. > > Randy > > > Randy Cosby wrote: > > Did that - don't have the results here with me, but there was quite a > > poor noise floor around the middle of the band - just like the osbridge > > reported. Not nearly as severe though. > > > > Randy > > > > > > Scott Carullo wrote: > > > >> Just do a survey on the AP, really thats all that matters... its easy > >> takes a few minutes and you have the data you need to make educated > >> decision. > >> > >> Scott Carullo > >> Brevard Wireless > >> 321-205-1100 x102 > >> -------- Original Message -------- > >> > >> > >>> From: "Randy Cosby" <dco...@infowest.com> > >>> Sent: Monday, October 12, 2009 11:45 AM > >>> To: "WISPA General List" <wireless@wispa.org> > >>> Subject: Re: [WISPA] spectrum analysis - 5dBm interference at 5785 > >>> > >>> Quite likely you're right. > >>> > >>> I tried shutting off the trango AP's with no luck - same bad spectrum > >>> analysis. I'm next going to go on site and do linktests on the AP's > >>> with the backhaul off. > >>> > >>> My suspicion is the backhaul is bad - at least the spectrum analysis, > >>> but it is potentially the source of interference as well. > >>> > >>> Randy > >>> > >>> > >>> Lakeland wrote: > >>> > >>> > >>>> Randy, > >>>> > >>>> You cant go by that spectrum analyzer. Something is wrong. Most > >>>> > >>>> > >> receivers > >> > >> > >>>> can't handle 5dbm pumped into them without killing them. > >>>> > >>>> -B- > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> Randy Cosby writes: > >>>> > >>>> > >>>> > >>>> > >>>>> Over the weekend we started getting complaints about a bad linktests > >>>>> > >>>>> > >> for > >> > >> > >>>>> all customers on an old trango AP site. I've tried finding a cleaner > >>>>> > >>>>> > >> > >> > >>>>> channel, but am not having much luck getting good linktests up there. > >>>>> > >>>>> > >> > >> > >>>>> This is one of the first sites I built, and use a couple OSBridge > 5Gxi > >>>>> > >>>>> > >> > >> > >>>>> radios to backhaul. I found they added a spectrum analyzer to a > >>>>> > >>>>> > >> newer > >> > >> > >>>>> firmware version, so I installed it and ran a analysis of the site. > >>>>> > >>>>> > >> It > >> > >> > >>>>> shows a 5dBm signal at 5785! Not -5, but 5. See attached. It > >>>>> > >>>>> > >> appears > >> > >> > >>>>> that something VERY hot is either pointed at my AP site, or something > >>>>> > >>>>> > >> up > >> > >> > >>>>> there has started interfering. > >>>>> > >>>>> Spectrum analysis from the near side of the link was relatively > clean. > >>>>> > >>>>> > >> > >> > >>>>> Any suggestions on where to start my search? > >>>>> > >>>>> Randy > >>>>> > >>>>> > >>>>> > >>>>> > >>>> > >>>> > >>>> > >>>> Bob Moldashel > >>>> Lakeland Communications, Inc. > >>>> 1350 Lincoln Avenue > >>>> Holbrook, NY 11741 > >>>> 800-479-9195 > >>>> 631-286-8873 Fax > >>>> 516-551-1131 Cell > >>>> > >>>> > >>>> > >>>> > >>>> > >>>> > >> > ---------------------------------------------------------------------------- > >> ---- > >> > >> > >>>> WISPA Wants You! 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