DTV rescan finds a number of numbers changes

[David Struffolino]

I hate this. I'm in the Merrimack Valley and I can't get a thing on my DTV
converter boxes. On analog I've always had great signals for 7, 9, and
11 and somewhat usable signals (snowy, but watchable) on 4, 5, 6, 8, 13 and
sometimes 10.

I have a rooftop antenna (which was there when I bought the house 10 years
ago) and I have tried three different internal/amplified antennas over the
past few months but I get nothing at all on the DTV boxes.