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I have been using VRS for project location for some years. I need to set up a control network for the Highway Department using a static network. I dug out the old Ashstech Extremes to set up the network. When I downloaded the files, both the almanac and datasets were dated 02.107 instead of 21.333.  I was always under the impression that the receivers got their time stamp from the GPS signals.

When I dump them in a project, they appear reasonable relative to each other. None were on a known point, and the crew didn't VRS any because I was going to send them to OPUS before I solved the net. OPUS rejected them because they were 50 km outside the nearest polygon. I am surrounded bu CORS sites. I thought it might be a labeling error and tried just changing the date tags, but that didn't work. I have done a lot of searching for a common occurance or explanation, but found nothing out there. There is no documentation in my Ashtech literature suggesting an internal clock.

Any Ideas out there?


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