I saw pretty bad fading for an hour or two this morning. Didn't happen
this morning, but I have seen GPS affected by multiple air layers
stacked up. Then you have the problem where your on-board GPS receivers
aren't optimally placed (on the side of a tower next to a lot of steel).
On 11/2/2015 9:31 AM, Justin Wilson - MTIN wrote:
That makes a ton of sense.
The UHF bands also opened up this morning across the country. Within
15 miles this site is a higher powered 900MHZ ham repeater.
Justin Wilson
[email protected] <mailto:[email protected]>
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On Nov 2, 2015, at 10:22 AM, [email protected]
<mailto:[email protected]> <[email protected]
<mailto:[email protected]>> wrote:
How power 900MHz will do it. We have one site with the local electric
company pushing a ton of 900MHz and GPS doesn't work
in that location. Another location our APs are near a radio station's
900MHz licensed link and they don't work. Look for any new,
high power 900 and see if that is the issue.
On Mon, Nov 2, 2015 at 10:13 AM, David <[email protected]
<mailto:[email protected]>> wrote:
AHHHHARRRG the humanity :)
On 11/02/2015 08:54 AM, Ken Hohhof wrote:
Have you done a physical inspection up on the tower? And has
another tenant fired up anything new on the tower that could be
interfering with GPS signals, either by physically blocking the
view of the satellites, or RF interference? LightSquared
testing some equipment on your tower?
Are there any GPS interference tests being conducted by the
government in your area?
http://www.navcen.uscg.gov/pdf/gps/gpsnotices/GPS_Interference.pdf
*From:* Jeremy <mailto:[email protected]>
*Sent:* Monday, November 02, 2015 8:42 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Re: [AFMUG] All units on a tower lost GPS sync
I've seen GPS antennas die before, seen water in a type-N
conenctor, and have seen the sync source die (daughter board on
a CMM3, or whatever on CMM4. There are a few points of failure
that could cause that.
On Mon, Nov 2, 2015 at 7:21 AM, Josh Luthman
<[email protected]
<mailto:[email protected]>> wrote:
What radios? What's giving them sync?
Josh Luthman
Office: 937-552-2340
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On Nov 2, 2015 9:18 AM, "Justin Wilson - MTIN"
<[email protected] <mailto:[email protected]>> wrote:
What would cause GPS sync to drop on 5 units on a tower?
Have 3 sectors and 2 backhauls which keep losing GPS
sync. Can reboot the units or turn gps off and on by
selecting a different source and then changing it back
GPS. It then works for a short time before it stops
again. On phone with Cambium but there seems to be a
language barrier at the moment. :-)
These have been rock solid for months until about 8am
EST this morning.
Any ideas?
Justin Wilson
[email protected] <mailto:[email protected]>
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