There’s a thread on the Cambium forums about this.  Forrest posted there as 
well.  I don’t see anything additional over what’s been posted here, other than 
some misinformation about a satellite problem to be fixed in 2 hours.

 

Interesting that the GLONASS outage 5 years ago also started at 21:00 UTC, when 
an engineer uploaded bad firmware to the satellites.  Probably just a 
coincidence.

 

 

From: AF <[email protected]> On Behalf Of Forrest Christian (List Account)
Sent: Tuesday, December 31, 2019 8:45 PM
To: AnimalFarm Microwave Users Group <[email protected]>
Subject: Re: [AFMUG] mass GPS issues

 

One note is that on later RackInjectors, rebooting the rackinjector not only 
won't reboot attached devices, it also won't reboot the GPS receiver.   This is 
to permit reboots of the control interface without affecting connected device 
at all.   This includes *most* firmware upgrades.

 

So for the later boards, you'll need to reset it on the GPS status page.

 

 

 

On Tue, Dec 31, 2019 at 6:29 PM Andreas Wiatowski <[email protected] 
<mailto:[email protected]> > wrote:

Thanks Forrest, let us know what you find. I can confirm that I have done the 
power cycle on the Rack injectors....we have seen the same issue occur 
again...feels like interference. 

It has been suggested by some to switch to Autosync+Freerun to avoid loss of 
client use...I guess it really depends on your networks reuse scheme.












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> On Dec 31, 2019, at 8:05 PM, Forrest Christian (List Account) 
> <[email protected] <mailto:[email protected]> > wrote:
> 
>  [EXTERNAL]
> Just an update/random informational message, a lot of which is pretty obvious 
> from this thread:
> 
> 1) As is pretty obvious at this point, something happened either with the GPS 
> constellation or with the firmware which runs in the GPS module, or some 
> combination of those. What many of you might not be aware of is that many 
> vendors use the same GPS modules from the same vendor. Generally a certain 
> portion of the uGPS, PacketFlux, ePMP all will use the same module, along 
> with other vendors. Each of the vendors (including PacketFlux) has changed 
> the exact model of the module over the years, for instance the GPS+glonass 
> modules are in newer devices, and GPS only are in older ones. I'm working 
> through determining whether this is just the GPS+GLONASS modules which are 
> affected (it seems like it might be the case), or if it's a few different 
> types. Note that because this seems like it might be confined to a certain 
> type (or types) of module, that it might turn out to be only certain 
> date/model ranges of each type of gear which are affected.
> 
> 2) Restart of the module seems to clear the issue. For PacketFlux gear, 
> anyone with a SiteMonitor or RackInjector should be able to do this remotely. 
> In the SiteMonitor, the row on the binary tab is labeled something like 
> 'SyncPipe power'. There might be multiple rows depending on how many 
> SyncInjector/PowerInjectors you have - this corresponds to the power port on 
> each injector, so you'll have to turn off the row which is for the unit which 
> the GPS receiver is attached to. In the RackInjector, it's a bit simpler 
> since it's just a button on the GPS page.
> 
> 3) I'm currently working through trying to find anyone who really knows what 
> went on here. None of the usual notification locations seem to have any data. 
> Probably too early to tell. I might luck out and be able to get a GPS 
> constellation recording I can replay here to replicate. 
> 
> One thing which might be helpful is for those of you who log this stuff, if 
> you can provide a pretty close UTC time that this occurred, along with the 
> approximate LAT/LONG, I might be able to correlate this with a specific event.
> 
> - Forrest
> -- 
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> [email protected] <mailto:[email protected]> 
> http://af.afmug.com/mailman/listinfo/af_af.afmug.com

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