Ubnt advertises the -6 dBi beamwidth vs the typical -3 dBi. In the case of the omni, there's a -5 dBi falloff in the H chain at "0°" and "180°"
On Fri, Apr 26, 2019 at 10:44 AM Robert Andrews <i...@avantwireless.com> wrote: > I also thought that UBNT also measured their antennas differently than > most everyone else? But I believe they did so to give better numbers > than competitors, which would actually give worse numbers to the cpe's > in the field? Just saying that 13 ubnt does not equal 13 with anyone else? > > Best, > Robert > > On 04/26/2019 09:21 AM, Matt Corcoran wrote: > > The omni radiation patterns are not perfectly round. Maybe the > > Ubiquiti antenna was pointed optimally at them while the new antenna is > > not, or is better rounded. > > > > Also the gain varies within the frequency range. Old antenna might have > > been target more towards wifi, while the other might be targeted more > > for 2.5/2.6ghz BRS/EBS LTE. > > > > Both should have graphs so you can see the differences. > > > > *Matt* > > > > *From: *AF <af-boun...@af.afmug.com> on behalf of Jay Weekley > > <par...@cyberbroadband.net> > > *Reply-To: *AnimalFarm Microwave Users Group <af@af.afmug.com> > > *Date: *Friday, April 26, 2019 at 12:12 PM > > *To: *AnimalFarm Microwave Users Group <af@af.afmug.com> > > *Subject: *[AFMUG] Customer signal issues: UBNT versus KP Performance > > 2.4 omni's > > > > After a storm we noticed that customer signal levels dropped a lot on a > > 2.4 GHz omni. Especially the received signals on the AP. Water had > > gotten in so we replaced the omni, radio and the connectors and the > > signal levels were better but didn't return to their original levels and > > are still about 5 db lower than they were before the storm. The original > > omni was a Ubiquiti AMO-2G13 and was replaced with a 13 dBi > > KPPA-2GHZ-DPOMA-WC-2. > > > > The Ubiquiti antenna has 2 degrees of downtilt versus 1 with the KP > > Performance antenna. Would this be enough difference to cause the > > problem? What else could it be? > > > > Here are the antenna data sheets: > > KP Performance antenna. > > https://streakwave.com/mmSWAVE1/Video/amo_ds_20170106.pdf > > < > https://streakwave.com/mmSWAVE1/Video/amo_ds_20170106.pdf?fbclid=IwAR2W3cHhzAJtt2pIxOoqbWsgj0_UwOTjfpCXi5QhKf8llEoJ0KchQtVBy7g > > > > > > Ubiquiti antenna > > https://www.streakwave.com/…/KPPA-2GHZ-DPOMA-WC-2_datasheet… > > < > https://www.streakwave.com/mmSWAVE1/Video/KPPA-2GHZ-DPOMA-WC-2_datasheets_US.pdf?fbclid=IwAR3Fffk8DlLf21wvYH_eidyLy2ndaZe-qhb_17LBVF_NGz7OEla1dp5a1_E > > > > > > -- > > *Jay Weekley* > > *Cyber Broadband > > * > > > > < > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient > > > > > > > > > > Virus-free. www.avg.com > > < > http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> > > > > > > > > > > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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