I see this with interference (even though the noise floor doesn't seem to go up). I would run a scan and see if switching channels helps. Also,try upgrading to 3.2.1 on both sides
On Mon, Nov 5, 2018 at 8:56 PM Colin Stanners <[email protected]> wrote: > That is strange. Was the channel switching done during one of the events? > Did the radio come back still at the low modulation? > > On Mon, Nov 5, 2018, 9:36 PM Mark Frost <[email protected]> wrote: > >> Hi All, >> >> >> >> We’re experiencing a very weird and very intermittent issue with an >> AirFiber 5x Link. >> >> >> >> For the past few weeks, we experience a one way drop in modulation – all >> the way down to 1/4x (QPSK). This occurs at random times of the day or >> night, lasting between 5 minutes to 2 hours, and then fixes itself. It >> occurs randomly from one to three times in a 24 hour window on average, and >> doesn’t seem related to traffic load. >> >> >> >> The link has been in and operational for the best part of 2 years with no >> problems whatsoever. The path is 14.2KM (~9mi), 600mm dishes (45deg offset >> ones) operating on a 30MHz channel and holds 64QAM. We’ve tried moving >> channels but that hasn’t helped. The signal on both chains (1 and 0) at >> both ends doesn’t change at all during the event (between -60 and -58 >> across all). There is no environmental changes during these events (such as >> rain, etc). >> >> >> >> I’ve spent hours reading the ubiquiti forums, and I’m still at a loss as >> to what could cause the issue. We are operating on old firmware, and I did >> see one post mention that the duty cycle was incorrect in a firmware >> revision (we run at 50/50) but that seems very anecdotal. >> >> >> >> Our only option at this stage is to replace the units. I’m guessing it’ll >> need to be both ends, as we don’t know if its RX on one unit or TX on the >> other. >> >> >> >> I just thought I’d check in on the off chance anyone may have a >> suggestion before we go climbing… >> >> >> >> Cheers, >> Mark >> >> >> -- >> 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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