KPHO-TV originally signed on the air on December 4, 1949, as a CBS affiliate. In 1953, the CBS affiliation moved to KOOL-TV, in which KPHO remained a dual ABC/DuMont affiliate until 1955 when ABC moved to then-newly signed on KTVK and in 1956, DuMont ceased operations, making KPHO an independent station.
This logo design was also used by then-sister stations KVVU-TV in Henderson-Las Vegas, Nevada; KCMO-TV (now KCTV) in Kansas City, Missouri; WNEM-TV in Bay City-Saginaw-Flint and Midland, Michigan; and WTVH in Syracuse, New York until 1993.
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On September 12, 1994, the CBS affiliation returned back to KPHO-TV, where the former independent station moved to former ABC affiliate KTVK (VHF channel 3) for Arizona's market as part of a group affiliation deal with New World Communications who purchased twelve stations (including KSAZ-TV).