>>Not anything like mountains in the Philly area, but the transmission towers would probably be on tall buildings, anyways, so it's more than likely other structures or even trees that could cause you problems with reception.
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>Most of the local TV towers are in the highest section of the city (Roxborough) and I actually live on some of the highest group in this neighborhood, but TV reception stinks.
>
>Tamar

What kind of antenna do you use? Maybe your cabling from the antenna to the TV has a bad connection or isn't of a high enough quality?