12500 - 16xxx - sounds like an EMS - Coshocton EMS??
I mentioned that near the top of the previous page:
http://forums.radioreference.com/oh...-new-marcs-ip-talkgroups-117.html#post2362054
I don't recall ever having been near Coshocton County to monitor them. You might be right. I recall the transmission I heard was related to a mutual aid med run with Tusc County.