1973
In 1968, as it had every year since 1956, the FCC renewed its permit allowing ABC to provide programming to XETV. Only this time, Western Telecasters, which owned independent UHF station KCST (channel 39, now KNSD) at the time, contested it and began a lengthy battle to take San Diego's ABC affiliation from XETV. KCST claimed that it was no longer appropriate for a Mexican-licensed station to be affiliated with an American television network when there now was a viable American station available, and also asserted that XETV had lacked local programming that effectively served the San Diego audience.[18][19][20] In May 1972 the FCC, siding with KCST, revoked channel 6's permission to carry ABC programming, with the wording of the Commission's decision forcing ABC to move its affiliation to KCST.[21] XETV and ABC then went to the U.S. Court of Appeals, who upheld the FCC ruling;[22] the station later sought relief at the U.S. Supreme Court, and was also denied.[23]
XETV surrendered the ABC affiliation to KCST in two stages: daytime programming moved to KCST in June 1973, followed by primetime programs and all other shows (including children's programming and sports) by July 1, 1973