About WDEF 12The station signed on the air on April 25, 1954, carrying programming from all four networks, though it has always been a primary CBS affiliate. It was owned by Joe Engel, who owned the Chattanooga Lookouts minor league baseball team as well as WDEF radio (AM 1370, now WXCT) and WDEF-FM (92.3 MHz). It took the CBS affiliation from WROM-TV (now WTVC, (channel 9). It lost NBC to WRGP-TV (now WRCB-TV) in 1956, and lost ABC to WTVC (the former WROM) in 1958. During the late 1950s, the station was also briefly affiliated with the NTA Film Network.
WDEF logo used from 2005, when the station was owned by Media General, until November 2015, when the station re-branded as "News 12 Now." Roy H. Park bought the WDEF stations in 1963. His media interests eventually became known as Park Communications, which was bought by Media General in 1997. In 2006, Media General sold the station to Morris Multimedia.