That's not what I would call SW PA, and it's not even close to the Pittsburgh DMA.golf$bill said:I am just north of the border, east of Gettysburg.
At that location, reception on the Pittsburgh spot is almost certainly interference limited, so a bigger dish probably won't help. Your intermittent signal is probably a result of shifts in the spot pattern as the satellite moves through its orbit. I'm guessing your reception follows some predictable daily pattern?
I suggest you try a service address closer to your true location. The Franklin County local package is very nice. It includes all of the Washington, Hagerstown, and Harrisburg channels.