I was looking at:
"I'd put it at N48 38.544 W91 39.090."

And I assume that's a period at the end. The picture I posted shows the radio button format I used for the PCD.

I get where Marten is coming from too and that seems plausible but between the topos and the aerials and places I've marked before in Q, I expect this stuff to be rather exact so I can only assume I'm doing something dopey and perhaps easy to correct. Don't want to form any bad habits due to ignorance.