I sometimes have trouble getting Sun tv to come in properly from the ch tower even though the signal is up at 92%. Fox mytv and pbs seemed to disappear right when city and global started coming in very well. It's perplexing to me because it is as if pbs and fox digital dissappeared completely not even a hint of signal when I tune to 14 or 34 or 43. Prior to this they at least register as digital and the psip sent me to 17. or 29.1 or 49.1 respectively. Now I get zip zilch not even a sniff.