That is an ops frequency used by mil aircraft training in Military Operations Area (MOA) R-5503 A/B which is both the Brush Creek MOA and
Buckeye MOA over southern Ohio. Roughly it runs from Adams County to around Chillicothe. The city of Hillsboro is lies underneath the middle of the airspace.
Units training in this area on a regular basis nclude:
178th TW OH ANG "SABERS" Springfield-Beckley MAP, Springfiled, Ohio
180th FW OH ANG "STING" Toledo Express AP, Toledo, OH
122nd FW IN ANG "SNAKES" Baer Field, Ft. Wayne, IN
Refueling is provided by:
121st ARW OH ANG "SLUFF, TAZZ" , Rickenbacker IAP, Columbus, OH
171st ARW PA ANG "STEEL" , Pittsburgh IAP, Pittsburgh, PA
434th ARW "MASH, INDY, IRISH", AFRC Grissom ARB, Peru, IN
R-5503 A/B is controlled by Indianapolis ARTCC (KZID).
Three other main frequencies to keep an ear on:
301.60
259.40
316.1250
The 178th uses 138.625, 139.700, 141.60, 141.700
and 142.1250 on a regular basis (All AM Mode of course!)
This page will give you a rough map of the area, and some
frequencies to monitor:
http://microvoltradio.com/ARTCC/KZID.htm
Mark