Is there a chance you could rerun your chart for the height that you mounted your last antenna on the roof? You have that set at ground level. I know the terrain is an issue for that area, & complicating matters, is that you have some translators in your area in different directions, & might not be any stronger than the main signal. WPCW (CW) & WQED (PBS) are your only VHF stations, while the top 4 are on UHF. The antennacraft HBU33 is a good start at looking for a bigger antenna, as you're going to need more gain for the terrain weakening the signals in your area. You might want to also look at a rotator, due to the stations coming from different directions, or get multiple antennas, & have A/B switches to switch from one antenna to another. Before I give any further recommendations, rerun your TV Fool chart with an actual height off the ground. The home I live in, the antenna can go no higher than 20 feet off the ground, though I have 3: separate VHF & UHF antennas hooked to a pre-amp for Chicago (Antennacraft CS600, which I bought for a Class A RF 4 station & Antennas Direct DB8, pointed in one direction, while a single 2 bay UHF only antenna is pointed for a PBS station south of me). Before I go any further, if you get any of Antennas Direct (Digital Terrestrial) 2, 4, or 8 bay antennas, just as a heads up, they make no claim that they work for VHF-Hi, & most models have the 75ohm transformer made to reject VHF signals.