The station began operations on September 29, 1949, as WTVN, Columbus' second television station. At its launch, the station was owned by Picture Waves Inc., a company controlled by Toledo-based attorney and investor Edward Lamb; Lamb also owned WICU-TV in Erie, Pennsylvania, which went on the air six months earlier. WTVN was an affiliate of the DuMont Television Network at its inception, and was one of only three primary affiliates of that network; it also carried a secondary affiliation with ABC. Channel 6 became a full-time ABC affiliate in 1955, after DuMont closed down its operations. During the late 1950s, the station was also briefly affiliated with the NTA Film Network. The station was first housed within the Lincoln-LeVeque Tower in Downtown Columbus until 1952, when it moved into a new facility on Harmon Avenue in Franklinton. Channel 6's present home, on Dublin Road near the Columbus-Grandview Heights border, has been in operation since 1977.