RTK not working on 9-3-2013

Robert Martin · Post by **Robert Martin** » Wed Sep 04, 2013 10:40 am

I was working out in sticks on Tuesday with my RTK unit. It seemed to fix right away in the morning but by mid morning I had a horrible time getting a fix... The radio signal was 100%, number of sats and geometry seemed good enough. But seemed to take forever to get a fix, and when it had one, it wouldn't hold it.

Did anyone else have any problems, I'm suspicious that there was something going on that I was not aware of. FYI this was in extreme northern CA.

Thanks, I really do appreciate any input.

Berk Blake, PLS CA · Post by **Berk Blake, PLS CA** » Wed Sep 04, 2013 11:53 am

had all 6 up and running all lost at least 17 epochs, 2 of them lost 240 epochs

hellsangle · Post by **hellsangle** » Thu Sep 05, 2013 9:35 am

You might wish to check NOTAMS (below link) before heading to field . . . as the FAA does GPS testing and gives Notices to Airman of a particular testing areas (with radius, altitudes, etc.) as potentially unreliable.

Phil - Sonoma

https://pilotweb.nas.faa.gov/PilotWeb/

PS I don't know if they have "archival" NOTAMS that you may go back in time to see if such testing was done on the day you were having problems.

Stephen Johnson · Post by **Stephen Johnson** » Fri Sep 06, 2013 2:18 pm

Did you check the SPACE Weather? Often you will get spikes in radiation from the Sun that will really mess with GPS.

Robert Martin · Post by **Robert Martin** » Sat Sep 07, 2013 11:27 am

Stephen Johnson wrote:Did you check the SPACE Weather? Often you will get spikes in radiation from the Sun that will really mess with GPS.

I was thinking the problem was either a solar storm or the DOD. How would I check the "SPACE Weather"? Is there a website I can check?

Thanks,

Jim Frame · Post by **Jim Frame** » Sat Sep 07, 2013 2:51 pm

How would I check the "SPACE Weather"? Is there a website I can check?

There are a number of them out there, but here are a couple of the more useful ones:

http://www.swpc.noaa.gov/
http://www.spaceweather.com/

Berk Blake, PLS CA · Post by **Berk Blake, PLS CA** » Sun Sep 08, 2013 11:59 am

Static solved just fine, even with the missing epochs

Robert Martin · Post by **Robert Martin** » Mon Sep 09, 2013 6:30 am

Thank you gentlemen for the information.

Stephen Johnson · Post by **Stephen Johnson** » Mon Sep 09, 2013 8:50 am

Jim Frame wrote:There are a number of them out there, but here are a couple of the more useful ones:

http://www.swpc.noaa.gov/
http://www.spaceweather.com/

Jim,

Thanks for your timely and knowledgeable insertion of information.

California Surveyors Forums

RTK not working on 9-3-2013

RTK not working on 9-3-2013

neither was my static

FAA GPS testing . . .

RTK not working

Thanks