I have had Davis antenna (Waldorf) over to check my house to see if I can get HD signals OTA. I live in Lusby, and I can't get any HD signals OTA there. I have Directv, w/ the HD package, and get my HD network feeds from NY (see above). Its the only way I can get them.
Check
www.antennaweb.org - they have good info based on your address - it told me that I might be able to get a signal if I had a really big antenna mounted on a 10 ft. poll on my roof. Davis checked that, but it wouldn't work for me. My house is low, (on the water) between hills, and has too many trees. I have a friend who lives elsewhere in Lusby, on a hill, and he can pull OTA signals in.