What we're seeing is GPS Status "Down". We can get it to go "Up" by
swapping the GPS antenna without rebooting. If I put the bad antenna
back on while it's still running I'll still have status "Up", but on a
power cycle it goes down again. The problem does follow the antenna.
That's the one I have in hand. The other two "fails" could have needed
a power cycle like you're saying....I guess we'll find out.
------ Original Message ------
From: "George Skorup" <[email protected]>
To: [email protected]
Sent: 8/24/2017 1:26:49 PM
Subject: Re: [AFMUG] ePMP GPS antenna fails
The ePMP GPS is just like the old 450AP's on-board GPS. You don't
necessarily need the external antenna. The GTop receivers have a
built-in antenna. Obviously the problem is they're facing at the
horizon and tower steel, etc. I have several 1k GPS for PTP links. I
didn't need the GPS, just the gigabit ethernet. They do not have the
pucks attached. They're on Rocket dishes facing into a mast and tower
steel. Most of them are tracking 14+ out of 20+ sats. I've said several
times before, the newer GTop GPS+GLONASS receivers just work better.
If the radio is seeing no data, then the receiver is probably locked up
and you'll have to power cycle it. If you're seeing 0 tracked and maybe
0 or a few available sats, then the receiver is confused, or it's
seeing lots of multipath or possibly noise. You can try a power-cycle
first, and if that doesn't do anything, then try moving the puck. If
it's in the top of the Cambium OEM antenna, then I guess you're kinda
screwed for moving it.
Easiest solution: SyncInjector/PowerInjector+Sync and a 'Pipe or 'Box.
On 8/24/2017 11:49 AM, Adam Moffett wrote:
How often do ePMP GPS antennas fail?
We had 3 fail in the past month, so I was wondering if they have an
expected lifespan of some sort.
