Thanks. I think HGN solved the mystery. After really looking at the possiblitites, terrain and stick heights, I gotta go with Roxborough. WDAS and WKDN are too far/short to make that shot. These were guyed, and loaded for bear.
Roxborough Farm can be seen for miles. At night, I could see it, with the WIBG 5 stick site from the top of Maugers Mill Road in Pottstown after signing off WPAZ. Couldn't HEAR WIBG, but I could see it! About 25-30 miles as the crow flies.
In fact at first I thought it was Renee's WNTP/WFIL site in the background, but I got the golf courses mixed. We had the Green Valley Golf Club next to us there.
Thanks all.