Without knowing more about what you did, I can say that it is possible to edit out so much data that TGO doesn't know that the data is bad. For exampl...

Although I am still learning all the ins and outs, I have so far found TBC to be a great processor-it successfully processes data that from this summe...

Another problem with OPUSI have also een experiencing the LONG return times.But, there is another problem, well, only if you use Trimble R8 GNSS recei...

Looks like a fun weekend, Scott. Here is a pdf with pictures from the Astronomic Azimuth class at NGS Corbin last week...Astro Azimuth class September...

OK, Let Me ExplainPaul: do you not read what people are saying? VERTCON does not in any way shape or form use a geoid model. It is strictly a program ...

Thomas: I don't use OPUS for anything other than a sanity check. But, I was curious as to why no one else has seen this.

Loyal: I believe they use several machines for processing OPUS, correct? Maybe the machines do not have the same files, that could be the reason for t...

Thanks, Loyal. I have been trying to figure out what could cause 15 cm, since the ARP heights in those models are somewhat less. I have seen it now in...

Perhaps Paul is using CORPSCON? That program calls NADCON for the NGCD29-NAVD88 computation, and also use a geoid model to go from GRS1980 to NAVD88. ...

One word-grads. That is what I use to process and adjust. So much simpler. But, like the metric system, it seems to be unusable by US surveyors.

In 1988-1989, ran a 130 mile second order class I line with the same equipment. Digital makes it so much easier. But, I wish I still had the rods and ...

That worked fine on the laptop, but the windows 7 64 bit desktop didn't work the same. Either the "upgrade" button was missing (if I didn't have the d...

I agree-never a good idea to put coordinates and elevations on a disk. Remember, these are only estimates, and can and do change with better data, mor...