A lot of the measurement stuff is for the birds anyway. Use it to get in the same ballpark, but then actually look at the darn patterns.
----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Dan Spitler" <[email protected]> To: "AnimalFarm Microwave Users Group" <[email protected]> Sent: Friday, April 26, 2019 12:59:02 PM Subject: Re: [AFMUG] Customer signal issues: UBNT versus KP Performance 2.4 omni's 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 < [email protected] > 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 < [email protected] > on behalf of Jay Weekley > < [email protected] > > *Reply-To: *AnimalFarm Microwave Users Group < [email protected] > > *Date: *Friday, April 26, 2019 at 12:12 PM > *To: *AnimalFarm Microwave Users Group < [email protected] > > *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 [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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