The very first GPS job I did in 1986 was during a thunderstorm. This was when we had LARGE macrometer antennas (3' by 3' if I recall correctly) sittin...

BUT, there is a use for the experimental models. I have had several projects recently where I suspect the GEOID12B model is tilted, but I am not sure ...

I have setup just such a system with an older R7 GNSS receiver. I output the corrections (RTCM or CMR+) on one of the three serial ports. This serial ...

Absolutely anyone can participate. The only requirement is to have a dual frequency survey grade receiver. I believe there are links on the NGS websit...

I did find in a newer Trimble Access help file a partial measurement. It says the offset from the notch to the trunnion axis is 0.138 m, it does not g...

I bought some cheap chinese knockoffs (maybe they are all chinese?) this past year. They appear to be ever so slightly out of tolerance in the positio...

We do a lot of high accuracy leveling. The fact that you are going to use invar is very important, not only for the much smaller coefficient of expans...

Probably have to use an external radio. I think you can use long range BT at both ends if you can't find a radio. Actually, I think I have an external...

NTrip can be finicky. I have had problems, but the error messages are not very explanatory. I wish it would say EXACTLY what the problem was.?ÿ?ÿ

I was pretty sure I posted this earlier, but it does not appear in the thread... See the article by Dave Zilkoski in GPS World (maybe in their newslet...

When I refinanced my property, I was of course paying my property taxes into an escrow, and the bank was supposed to pay them when due. I got a letter...

You don't need cell coverage to be able to connect into the unit via wifi. It shows up as an available wifi access point. You would only need cell cov...

Early 90's, single frequency receivers (Trimble 4000SSE, which were more susceptible to interference). No HARN, no CORS. I was doing a control job on ...

I have worked at Nellis (during a Red Flag exercise) and China Lake with no problems.?ÿ I had serious problems at Eglin in FL with navigation GPS (Gar...

I recently purchased one to use as an RTK base, transmitting corrections over cellular. It works fine using TCP protocol using an R10 as a rover (Trim...