I am in Deltona and have an external antenna 20 ft in the air. It is aimed correctly according to TVFOOL and locked into position. I have been getting channel 2-1 and 2-2 without any problems up until a couple days ago. The signal goes from 55 to 0? I just tried rotating the antenna a few degrees left and right without any difference. All the rest of the UHF channels are 98-100. Is wesh still broadcasting on VHF or is there something else going on?