Once again I would recommend starting with
http://www.radioreference.com and look in the database there. I would also recommend getting the Philly Scanner guide eBook from Scanner Master, which has stuff that the RR database doesn't have.
There's lots of links for those areas found right here...
http://wiki.radioreference.com/index.php/Pennsylvania%28US%29Alternately get on the RadioReference forums and go to the Pa. forum and ask for a file. Remember that FS can import BuTel (ARC) and UASD files.
73 Mike