In addition to vertical offset method, It also can be solved by recording the vertical and horizontal angles from three known points. There is a formu...

I bet it's caused by bad antenna or built-in radio module. I replace external antenna of ranger data collector every three or four months.?ÿ

The dealer suggested to replace the main board for $2,000. I am thinking the system and data should still be there just like a computer canƒ??t boot t...

Thank you.

Nice to meet you Mark. Itƒ??s a small and cozy community. I bet there are no changes for the survey firms you ever worked with.?ÿ