During NBC's primetime schedule on March 9, 1987, their list of affiliates grew by one, as KETK-56 made its debut that night. With the addition to the Tyler-Longview market, there was finally a standalone NBC affiliate there after 33 years of KLTV's cherry-picking (they and sister KTRE could air anything from any net until KLMG (now Fox affil KFXK) came along with CBS, then 2 1/2 years later, KETK snatched up NBC).
The past 3 decades have been eventful: original license-holder filed bankruptcy, call letters changed after that, broadcast tower damaged by ice before completion, a construction worker fell off the microwave-ENG tower at the station and died before that tower was done, a tornado hit the studios building 8 months after KETK went on the air, 4 years later the station left its COL city for a former men's clothing store building in Tyler, later on after ownership changes KETK ends up sharing the building with former competitor KFXK, as well as the acquisition several months ago of the station(s) by Nexstar.
Well, never a dull moment as they say, so happy 30th anniversary to KETK-56!