yep if you're only 20 miles from DC most antennas will work. I am 25 miles from the towers in Minnnepolis and get all just fine.
You might want to try a indoor antenna first. A while back as a joke I took the UHF antenna from my Dish 811 receiver (which is all of 4-5 inches), plugged it into the antenna in on the 811 (which has a digital tuner) and got almost all the stations in my area. They werent the strongest but it worked
You might want to try a indoor antenna first. A while back as a joke I took the UHF antenna from my Dish 811 receiver (which is all of 4-5 inches), plugged it into the antenna in on the 811 (which has a digital tuner) and got almost all the stations in my area. They werent the strongest but it worked