I'm watching the Masters with my indoor UHF antenna. The weather outside is perfect, sunny skies. When the weather is good, my reception has always been stable. No change in signal strength. However, today, I am getting fluctations in strengths and then dropouts. I think this is really the first OTA broadcast I've tried to get this early in the daytime. Does this have anything to do with it? I tried adding a preamp, and it didn't make a drop of difference Didn't even increase signal strength for my CBS reception. Just curious why my reception is problematic when it is normall perfect and error-free.