KETK-TV, virtual channel 56 (UHF digital channel 22), is an NBC-affiliated television station serving Tyler and Longview, Texas, United States that is licensed to Jacksonville. The station is owned by Nexstar Media Group, which also operates Longview-licensed Fox affiliate KFXK-TV (channel 51) and Tyler-licensed low-power MyNetworkTV affiliate KTPN-LD (channel 48) under a shared services agreement (SSA) with owner White Knight Broadcasting. The three stations share studios on Richmond Road (at Loop 323) in Tyler; KETK's transmitter is located near FM 855 in unincorporated northwestern Cherokee County.