*nods* Never a problem. 



----- 
Mike Hammett 
Intelligent Computing Solutions 

Midwest Internet Exchange 

The Brothers WISP 




----- Original Message -----

From: "Josh Baird" <[email protected]> 
To: [email protected] 
Sent: Wednesday, July 26, 2017 2:11:47 PM 
Subject: Re: [AFMUG] EPMP1000 GPS Antenna Issues 


GPS pucks are perfectly reliable for us. 


On Wed, Jul 26, 2017 at 3:07 PM, Steve Jones < [email protected] > 
wrote: 



packetflux is the only way to sync, everything else is garbage, GPS pucks 
aren't reliable, CTMs and CMMs are a waste of money and are no where near as 
versatile, cambium cant get their pucks to work, so I wouldn't trust their 
little syncpipe knockoffs either. Ala-cart sync, switch agnostic, no worries. 
Small sites you can split one injector to power and/or sync a mix of voltages 
and pinouts, PLUS (this is a big thing) two Fridays ago, after hours, had an 
issue with getting one working, got direct communication from packetflux and 
got things going, good luck with that from cambium and their new tiered support 




On Wed, Jul 26, 2017 at 1:54 PM, George Skorup < [email protected] > 
wrote: 

<blockquote>
It's not only the antenna. Newer 1000 boards and all 2k's have a GPS+GLONASS 
receiver. They also updated the 450AP a couple years ago with a revision that 
includes this receiver. GPS-only kinda always sucked. With GLONASS added, you 
have a lot more sats available, so the probability of maintaining lock is much, 
much better. I really wish Forrest would start using this in his pipes and 
boxes. 

Typically moving the antenna a few inches or a foot says there's some multipath 
going on. And sometimes the receivers just get confused and need a power-cycle. 
I have some SyncPipes on 1-foot stand-offs with another 300' of tower above 
them and rain will make them see no sats. 

What has worked better for me than anything else is a SyncInjector and pipe/box 
on the ground away from tower steel and lots of RF. Even then, those get 
confused sometimes too. Usually when I see really bad fading at night during 
the summer, I'll see that tracked sats will go from the normal 9-12 down to 
5-7, but they rarely lose lock. 

Once upon a time, I had a SyncInjector and a pipe running in the server room 
for 4-5 days (because I forgot to run a cable outside for the pipe). It worked 
fine... until it rained. 



On 7/26/2017 1:31 PM, Nate Burke wrote: 

<blockquote>
When we first started using EPMP, (5ghz, with GPS) we had some AP's would keep 
losing satellites. Then after our first couple installs, everything just Worked 
after that. Slap the GPS antenna on any random surface, and lots-o-satellites 
with no issues. Now the New AP's we're getting out of Distribution have the 
GLONASS label on the antennas, and we're back to having hit and miss GPS again 
at new sites. Are the new antennas less sensitive? At one location, 1 out of 
the 4 APs was going from 12 satellites tracked (20 visible) to 0 Satellites 
tracked (still 20 visible) at random times. We moved the GPS Puck about 4 
inches vertically, and now it has a steady 17 satellites tracked. 

Has something changed with the Antennas? 




</blockquote>


</blockquote>


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