I am searching for opinions on if i can get a signal. i live in Barre vt 05641, 26.7 miles from towers. Antennaweb says i need a large directional with a pre amp. I hooked up an indoor antenna, a cheap walmart phillips. I received sound and a crappy, unwatcheable picture. They are from the same towers as the DT signals. I talked to 2 installers who said I couldn't get a picture. One guy will come out to check, for $90. Before i spend my money, what are my chances of getting a DT signal with a large directional mounted outside?