I am having reception issues with one specific channel using a digital antenna. The channel signal is jumping all over from 55-72 using a digital antenna. There are two other TV stations with towers literally yards away from this channel's tower. All about 26.8 miles away and they come in perfectly with no pixelation at all. Do I have a bad receiver or could there be a problem with the station signal itself? The problem really began about a month or so ago. Any suggestions would be appreciated!