Because of the terrain between your house and the Philly transmitter's in Roxborough, you'll need a deep-fringe antenna mounted on the roof aimed at the transmitter, and I would also recommend using a preamplifier, especially if you plan to use multiple TV sets. My best suggestion would be to use a Winegard HD-7084P mounted as high on the roof as is practical along with a good all-channel preamplifier such a Winegard AP-8275. Aim the antenna at roughly 92 degrees and mount it securely to the roof. All of the Philly stations should pop in without an issue for you. Please follow the links listed below to see the equipment.
Please remember that all TV signals are now digital: if your TV set does not have a digital tuner, then you will need a digital to analog converter to see the Philly programming.http://www.winegard.com/kbase/upload/HD7084P.pdfhttp://www.winegard.com/kbase/upload/chart29.pdfhttp://manuals.solidsignal.com/AntInsta ... ampaign=CJ