WBIR-TV was added in 2017. Technical information Subchannels The station's digital signal is multiplexed: Analog-to-digital conversion WTNZ shut down its analog signal, over UHF channel 43, on June 12, 2009, the official date in which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate. The station's digital signal remained on its pre-transition UHF channel 34, using virtual channel 43. References External links Television channels and stations established in 1983 TNZ Fox network affiliates Bounce TV affiliates Grit (TV network) affiliates Lockwood Broadcast Group 1983 establishments in Tennessee