Remember they may be UHF now but the stations have to choose soon whether to keep the UHF or use the old VHF channel for their permanent assignment. Our KOAT is suppose to go back to 7. High VHF 7-13 are possible to get on some principally UHF antennas although not nearly as well as UHF. Low-VHF 2-6 are difficult -- read about the problems with CBS in Chicago on 3.
-Ken
BTW, UHF used to go to 83 but the government wants to re-allocate 70-83 to cell phones or such.