Bad GPS day on 3-14?

Hi JT, doesn't look if there was anything out of the ordinary on the spaceweather front,

http://www.swpc.noaa.gov/rt_plots/kp_3d.html

What we get here in the UK sometimes is the military playing around with jamming, ok if you're notified, but the message doesn't always get out to everyone.

I believe you may need to dissable Glonass [or if you know which satellite(s)] during that period, as that has worked for us. I believe one or more satelittes are bad. I'm not smart enough to know more about it, though.

There was nothing wrong with GPS. Sometimes GLONASS sats burp, but shouldn't cause this problem.

Sun spots are not the problem.

99% of the time, this is a problem with a specific manufacturer. Check with them for a firmware update and see of others with the same model/firmware were having the same problem.

> Man, I couldn't get a fix in the wide open from about 11am-2pm in Northeast Mississippi yesterday, with GPS and GLONASS. I finally packed up and went in.
> Anybody else?

I have had to turn of glonass a few times to get a fixed position...also a reboot of the DC does the trick sometimes.

Thanks for the replies. Apparently my bad.
I cleared the NV Ram, and today went a lot smoother. btw, I have topcon hiper lite + receivers. They haven't released a firmware update for quite some time. I think they're concentrating on their newer receivers. They used to update the firmware pretty regular, but not anymore.

I have the same receivers and sometimes you have to disable the GLONASS sats one at a time until you get a fix, like stated above.

I run a leica viva smartnet 08 seris on 90% of the work I do regarding construction lay-outs. The problem someone said they had between 11-2 pm is not unusal anywhere in the country. That is a prominent spike period. I usually have this problem when im running my unit on a grid coord. system and not so much when using a surface system which is easy to convert back and forth with using leica system software. To make a long story short I did have problems using both coordinate systems on this day. I finally gave up on the gps and pulled out the old trusty total station and ranger data collector and finished the project the old school way.