We bought a small home depot omni-directional (or multi-directional) antenna last year for around $30.00 and mounted it in the roof, we get both the analog and HD channels for the Maine stations. The quality is great and weather does not seem to impact it at all. The best part is after the antenna purchase, it's free.
Here is an interesting site to see what station you can get via antenna, just enter your zipcode and submit it.
www.antennaweb.org/aw/address.aspx
Here are the 03810 results: