FWIW it's on the south side of a water tower. There's little to no signal from the northern sky.
Of course I'm pretty sure the tower isn't moving some weird way every night... Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Fri, Apr 6, 2018, 6:00 PM Bill Prince <[email protected]> wrote: > Just checking ours. I thought it happened once every month or two, but I > guess it's not even that often. The snapshot from the last 3 months > indicate that it got close to losing it in week 12, but it seems to have > lived through it, even though it got down to 3 satellites tracked. > > bp > <part15sbs{at}gmail{dot}com> > > > On 4/6/2018 2:48 PM, Brian Sullivan wrote: > > We have this at a couple sites each year. Usually, I can mount the GPS > antenna in a different place and solve the issue. Whats interesting is, I > don't see this issue with the SyncBoxes, only CMM Micro. And I have both > at the same towers affected. > > On 4/6/2018 4:39 PM, Bill Prince wrote: > > We have a SyncInjector mounted on the south side of a concrete building. > The building is thick concrete ( > 12"), and extends up above the location > of the GPS antenna 30 or 40 feet. The building is also a shallow "V" shape > with the GPS antenna at inside base of the V. So the GPS antenna gets about > 170° view of the sky to the south. > > It goes through a periodic cycle of visibility, but it's not the same time > every night, or even every day. > > > bp > <part15sbs{at}gmail{dot}com> > > > On 4/6/2018 2:20 PM, Forrest Christian (List Account) wrote: > > But the question is, why at the same time every day? Especially since > the gps satellites don't orbit on a 24 hour period... that's what has me > troubled with my customer. > > On Fri, Apr 6, 2018, 2:11 PM Bill Prince <[email protected]> wrote: > >> Exposure to the north or south should not make a significant difference. >> GPS satellites, excepting the WAAS satellites, are not in geostationary >> orbits. They are (mostly?) in medium earth orbit of around 12,000 miles. >> >> I think it may be more of how much of the sky they can see. >> >> bp >> <part15sbs{at}gmail{dot}com> >> >> >> On 4/6/2018 1:45 PM, Dave wrote: >> >> how much exposure to the northern hemisphere does it have? >> If I remember those antennas are fairly small >> >> >> On 04/06/2018 10:15 AM, Josh Luthman wrote: >> >> I have an epmp that has GPS problems and goes into the hold timer for a >> few minutes every single night for the last many months (maybe even a >> year). >> >> Didn't think much of it until I noticed all of the times being right >> around midnight, give or take... >> >> WTF? Any ideas what's causing it? >> >> Josh Luthman >> Office: 937-552-2340 >> Direct: 937-552-2343 >> 1100 Wayne St >> Suite 1337 >> Troy, OH 45373 >> >> >> -- >> >> >> > > >
