What I can't figure out is why I can get the rest of the channels (pax, nbc, abc, upn) at 70-90%, yet even rotating my antenna and pointing it directly at the cbs tower, which is supposedly the best one and is the closest to me, I can never get better than 49%, and thats not even consistant...it jumps from 0-49%. I've gotten it a time or two briefly at eighty something percent, but most of the time nothing. My antenna is roof mounted and wired directly to my receiver, no diplexer. Any ideas on what the deal is??? It is really irritating that I can't get this channel! Also, which channel is cbs...sometimes I get the 49% on 28, sometimes I get it on 3?