I'm not close enough to monitor, but this license is still active and says "security and housekeeping":
FCC Callsign WQEP618 (CHESTER COUNTY HOSPITAL)
www.radioreference.com
I found this by doing a Lat/Lon search.
I know that they switched over to UofPenn in 2013, but maybe they have switched to their licensed frequencies? There seems to be no UofPenn licenses in Chester County, though.