I have noticed Digital TV is affected a lot by strong gusty wind. Also every day when the sun is on the horizon TV signals are poor. We have been having gusty 30 mph winds for 3 days so TV signals have been very poor. My antenna is outside on a tripod in the back yard about 20 ft up, house and yard are on a hill above other houses in neighbor hood. Antenna is adjustable through 150 degrees for all the TV stations located within 60 miles and the antenna is mounted ridged top and bottom so it does not wobble or shake in the wind. I bought a Radio Shack antenna amplifier and it helps it boosts my signal about 25% but I need more. The antenna that I built is a quad screen bow tie, 4 antennas 20" x 30" each connected together. Antenna was built exactly like the antenna is Amature Radio Antenna Handbook.
I an getting some very good TV channels with my antenna, movies, NPT, nature channel, travel channel, local channels, I'm just having a problem sometimes when it is windy and when the sun is on the horizon.