Youre right on WTVC WATETV and WVLTTV Knoxville switched to their digital UHF channels because their coverage areas actually increased on the digital UHF channel I get them in Chattanooga on the hill I live on  I also get WBXX digital channel  too  WSMV stayed on its digital channel  in Nashville too  For some reason WRCB did not change from digital channel  I believe it was a financial decision and it did come back to haunt them as their overall coverage area shrank tremendously especially in the northern fringes Bledsoe Rhea Meigs McMinn folks not on cable or satellite were forced to switch to WBIRTV for NBC  WBIR is changing to digital channel  and also in Chattooga Gordon Fannin actually they are in the Atlanta DMA anyway but are closer to Chattanoogaoffair folks there had to switch to WXIATV for NBC     Whats helped them and everybody else is that cable and satellite companies are mandated to protect stations in the counties in their DMAs  As long as PSIP converts the UHF digital signal to a virtual channel which converter boxes cable and satellite companies read stations can stay on their UHF channels but its more economical to switch back  Dont worry about the disposition LOL  Thats what I hate about writing something  It never conveys the actual emotion and tone of a persons voice  Hope the homework assignments work out  I also used to have a spectrum analyzer but a friend of mine in Knoxville for it in a television museum hes building  I have a First Phone license too and did a transmitter shift at WKPTTV and WJHLTV in the TriCities on Holston Mountain back in the s I helped put WKPTTV on the air  Im in the process of upgrading the license to digital