Thanks for the tag @MDS41 . From @Pippinger ’s description the HiPer SR system that I’m selling would be a bang up fit. I bought it for doing some topo work on my own property. MDS is correct that the SR won’t work for machine control, which is it’s main downside. The advantage is my lightly used system is for sale for $10500 vs ~$27-28k for a base/rover HiPer V setup. I bought the system from Earl Dudley in your neck of the woods @CM1995 .