KHON-TV
KHON-TV first signed on the air on December 15, 1952 as a primary NBC affiliate, KONA-TV, occupying the channel 11 position. It also had a secondary affiliation with DuMont (which it later shared with KULA-TV, now KITV, after it signed on in 1954) until its demise in 1955. The station, which is Hawaii's second-oldest television station (behind KGMB, originally on channel 9, now on channel 5), was originally owned by Herbert Richards. Two years later in 1954, the "Honolulu Advertiser" purchased the station. On October 16, 1955, KONA changed channels from 11 to 2 due to the lower VHF positions (2 to 6) having the most powerful ERPs at the time. The channel 11 frequency now belongs to PBS member station KHET. In 1956, KONA was sold to Pacific and Southern Broadcasting, the forerunner of Combined Communications. KAII signed on in 1958, with KHAW following in 1961. In 1965, the station's call letters were changed to the current KHON-TV.
KWGN-TV
The station first signed on the air as KFEL-TV on July 18, 1952. It was owned by Colorado broadcasting pioneer Gene O'Fallon along with KFEL radio (AM 950, now KKSE), and was the first television station to sign on in the state of Colorado. It was also first station on the VHF band to sign on the air following the Federal Communications Commission's decision to lift its freeze on television station licenses that year. The station originally operated as a primary affiliate of the DuMont Television Network, sharing the affiliation with KBTV (channel 9, now NBC affiliate KUSA), but also cherry-picked programs from NBC, ABC and CBS. The station's original studio facilities were located in a remodeled brick warehouse at 550 Lincoln Street.