lighthouse In 2021, WCCT-TV began serving as the ATSC 3.0 (Next Gen TV) lighthouse for Connecticut broadcasters with all subchannels on UHF 33. Analog-to-digital conversion WCCT-TV (as WTXX) shut down its analog signal, over UHF channel 20, on June 12, 2009, as part of the federally mandated transition from analog to digital television. The station's digital signal relocated from its pre-transition VHF channel 12 to UHF channel 20 for post-transition operations. The digital signal's change in channel location was necessary to avoid interference with PBS member WHYY-TV in Wilmington, Delaware. References External links WCCT-TV website Waterbury, Connecticut CCT-TV The CW affiliates Grit (TV network) affiliates Comet (TV network) affiliates Quest (American TV network) affiliates Tegna Inc. Television channels and stations established in 1953 1953 establishments in Connecticut ATSC 3.0 television stations