I drove through that area a couple of weeks ago on my way to Dallas. The Arbuckle site was on the air and I heard Troop F and Troop G traffic.
The Marietta site was not on the air as far as I was able to tell.
I checked my scanner yesterday and found that the Ardmore site was locked out for some reason
. EDIT Apparently, all of the GPS controlled sites are locked out initially.
I'll review the GPS coordinates for Ardmore this morning and make sure that they are correct and let everyone know if the site appears to be active when I pass back through in a couple of days. If I can catch it, I'll get the site ID.