Just to add to this, we have had this same issue for over 2 years now. I have worked with Ubiquiti support and no good solution has been found. The issue I was led to believe is hardware (processor) related and Ubiquiti has no intention of upgrading this product. I have heard rumors about end of life but seen nothing official. If you search the UBTN user forums you can find this issue being discussed as far back as 2016.
I have found that if you regress back to firmware XM.v5.6.15-sign-cpu400.31612.170908.1458.bin on both the AP and the sta(s) and you utilize ping watchdog on both the AP and all sta(s) you can mitigate the issue but that’s as good as it is going to get (You do lose UNMS functionality). Unfortunately for us, we have 10 AP’s and somewhere north of 35 stations in service (very heavy tree and foliage issues in rural Florida) and constant complaints regarding service drops is a daily issue and has been for a few years. If someone has a better resolution I too would like to hear it. I have seriously considered Cambium (excellent product) as it appears to be the only other 900mhz (unlicensed) NLOS product out there and is supported well however the $3000+ AP cost just destroys any link justifications. <http://onlinepro.x10.bz/> Online Pro Joe Buck - NCE / E2-02097 13 Emerald Circle CTO Ormond Beach, Fla. 32174 <mailto:joe@cbn.network> joe@cbn.network tel: 386-401-6825 IM: 68002132 (ICQ) fax: 386-401-6830 AIM: kc7kp cell: 812-760-4293 <http://www.linkedin.com/in/joebuck> http://www.linkedin.com/in/joebuck skype: joe.buckiii <http://cbn.network> http://cbn.network From: ubnt_users-boun...@wispa.org [mailto:ubnt_users-boun...@wispa.org] On Behalf Of Robert Dillon Sent: Tuesday, January 21, 2020 5:40 PM To: Ubiquiti Users Group Subject: Re: [Ubnt_users] 900 disconnect issue We have this happen all too often also. And totally agree with the broken bandaid that the watchdog provides. We have found that if we replace the bad radio sometimes once and sometimes twice or more we'll eventually find a new in-box radio that works without the drops. Its terrible but that's what it comes down to. We are looking for a new solution as well. We only use 900 in small cell repeater scenarios where no way around the foliage so what Tommy does with Cambium PMP 900 is too expensive for us for that application. Sent from my Verizon, Samsung Galaxy smartphone -------- Original message -------- From: Clay Stewart <cstew...@scsbroadband.com> Date: 1/21/20 4:57 PM (GMT-05:00) To: Ubiquiti Users Group <ubnt_users@wispa.org> Subject: [Ubnt_users] 900 disconnect issue For several weeks now, or longer, random 900 APs drop all customers and have to be rebooted to get them back. Setting WatchDog is NOT a solution, it only has customers interrupted often, and not down till a reboot. It does not seem to matter which OS we use. Has anyone found a solution?
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