Thanks for answers to questions I had below.

I believe you are saying that CORS VRS is a LOT more accurate than RTK. I think you quoted "1-2 cm". Normally we're told RTK is "less than 1 inch". I realize that could also be the same as 1-2cm, however it must not be, or mfg would say 1-2 cm instead of less than 1 inch.

Again, the Cors thing might be good where avaiable. But, it isn't in IL, is it? Seems there's a fair amount of agriculture here...maybe as much as WI or MN? Also, cell phone service seems to still be a question. Here in NE IL, cell towers seem to close down faster than they go up. Actually, haven't seen any go up in a couple of yrs. Maybe the cell rush is over & whatever we have is it?