I've seen this where it starts to "run out of memory" after a length of
uptime.  Did you reboot (not necessarily power cycle, but reset the uptime
counter)?  Might try v4, too.


Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373

On Tue, Nov 6, 2018 at 8:37 AM, Ken Hohhof <[email protected]> wrote:

> I’ve had a problem that comes and goes similar to yours except it’s also
> the signal level on one polarization also drops like 20 dB and then after a
> few hours or days it comes back.  Changing software didn’t help.  This
> started after we replaced one end of the link due to lightning damage.  I
> realize my problem isn’t exactly the same as yours, but still, my guess is
> you will end up replacing one of the radios.  Maybe replace both ends in
> case there was a manufacturing issue around that time.  AF5X aren’t that
> expensive, maybe safer to just replace them both.
>
>
>
> *From:* AF <[email protected]> *On Behalf Of *Mark Frost
> *Sent:* Tuesday, November 6, 2018 5:01 AM
>
> *To:* AnimalFarm Microwave Users Group <[email protected]>
> *Subject:* Re: [AFMUG] AirFiber 5X Oddity
>
>
>
> Hi Jeremy and Colin,
>
>
>
> Thanks both for your input.
>
>
>
> We did change the channel during one of the events and the problem
> persisted. From memory (I’ll have to check with others), it fixed it for a
> minute or two then started again.
>
>
>
> I agree that its worth a firmware upgrade. Having said that, it seems odd
> that if it was a firmware issue, it would start out of the blue after a
> couple of years?
>
>
>
> Cheers,
> Mark
>
>
>
>
>
> *From:* AF <[email protected]> *On Behalf Of *Jeremy
> *Sent:* Tuesday, 6 November 2018 14:00
> *To:* AnimalFarm Microwave Users Group <[email protected]>
> *Subject:* Re: [AFMUG] AirFiber 5X Oddity
>
>
>
> Sorry, missed the line that you had already tried switching channels.
> Maybe firmware??
>
>
>
> On Mon, Nov 5, 2018 at 8:58 PM Jeremy <[email protected]> wrote:
>
> 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
>
>
>
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