KETK-TV (channel 56) is a television station licensed to Jacksonville, Texas, United States, serving as the NBC affiliate for East Texas. It is owned by Nexstar Media Group alongside Tyler-licensed low-power MyNetworkTV affiliate KTPN-LD (channel 48); Nexstar also provides certain services to Longview-licensed Fox affiliate KFXK-TV (channel 51) under a shared services agreement... Wikipedia