Well, UBNT's degrees are misleading. They are -6 dB beamwidths instead of -3 dB, like most manufacturers use. I believe a UBNT 90 performs similarly to a regular 120, but I can't be certain.
The UBNT engineer said he saw minimal need for the high gain sectors and that most people should use the mid gain ones. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------------------------------------------- From: "Robert West" <robert.w...@just-micro.com> Sent: Monday, March 29, 2010 5:22 PM To: "'WISPA General List'" <wireless@wispa.org> Subject: Re: [WISPA] Ubiquiti Sector Tilt angle > I have one where I'm hitting it at 12 miles with a -77 but the noise floor > hovers at around a -87 most of the time. But that's using a 23dbi cpe. > Haven't tried the UBNT 27dbi there, may make it all good. > > Would 90's be a better choice? I have only one AP using the smaller UBNT > 90's but haven't tried the large 90's, only the 120's. > > Bob- > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Mike Hammett > Sent: Monday, March 29, 2010 3:54 PM > To: WISPA General List > Subject: Re: [WISPA] Ubiquiti Sector Tilt angle > > I wouldn't even try to get a signal 15 miles away on a 120. :-p > > > ----- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > > -------------------------------------------------- > From: "Robert West" <robert.w...@just-micro.com> > Sent: Monday, March 29, 2010 1:29 PM > To: "'WISPA General List'" <wireless@wispa.org> > Subject: Re: [WISPA] Ubiquiti Sector Tilt angle > >> I was compensating for the electrical tilt but just one degree was >> throwing >> it way, way off. Trying to get a usable signal 15 miles out, maybe less, >> and that slightest fraction of a degree would change it considerably. >> But >> after reading Tom and Mercy's posts it's all making sense to >> me........... >> A little more work. >> >> Bob- >> >> >> -----Original Message----- >> From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On >> Behalf Of Faisal Imtiaz >> Sent: Monday, March 29, 2010 2:22 PM >> To: WISPA General List >> Subject: Re: [WISPA] Ubiquiti Sector Tilt angle >> >> ..... Technically speaking.. if you are not concerned about dealing with >> 'near' customers.... less than 1 or 2 miles... then you can pretty much >> leave the sectors at '0' tilt.. and you have coverage to the horizon.... >> >> The built-in electrical down-tilt typically throws folks off...... only >> becomes a factor if you are needing to down tilt for near customers.. >> >> Faisal. >> >> On 3/29/2010 1:36 PM, Robert West wrote: >>> I'm having a heck of a time with the large UBNT sectors getting the tilt >>> angle to jive. With the smaller sectors, they behave perfectly and go >> right >>> where the calculations say they will however, with the larger ones, >> nothing >>> I do other than have someone 10 miles out with a CPE check levels while >>> I >>> tilt up and down seems to be good. I REALLY don't want to have to do >>> that >>> with all of them... >>> >>> >>> >>> Anyone having any success or insight with the proper tilt of these >>> things? >>> Using the 120 degree 5GHz flavors. >>> >>> >>> >>> Thanks! >>> >>> >>> >>> Robert West >>> >>> Just Micro Digital Services Inc. >>> >>> 740-335-7020 >>> >>> >>> >>> Logo5 >>> >>> >>> >>> >>> >>> >>> >>> >>> >>> >> > ---------------------------------------------------------------------------- >> ---- >>> 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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