`    You're right on WTVC.. WATE-TV and WVLT-TV, 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 50, too..  WSMV stayed on its digital channel 10 in Nashville, too.  For some reason WRCB did not change from digital channel 13 (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 WBIR-TV for NBC).  WBIR is changing to digital channel 10, and also in Chattooga, Gordon, Fannin (actually, they are in the Atlanta DMA anyway, but are closer to Chattanoogaoff-air folks there had to switch to WXIA-TV for NBC).     What's helped them (and everybody else) is that cable and satellite companies are mandated to protect stations in the counties in their DMA's.  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 it's more economical to switch back.  Don't worry about the disposition LOL!!  That's what I hate about ``writing`` something.  It never conveys the actual emotion and tone of a person's 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 he's building.  I have a First Phone license, too, and did a transmitter shift at WKPT-TV and WJHL-TV in the Tri-Cities on Holston Mountain back in the 70's (I helped put WKPT-TV on the air).  I'm in the process of upgrading the license to digital.  `