As KDKA radio had long been an affiliate of the NBC Blue Network ( Westinghouse was a co-founder of RCA , NBC 's then-parent company ) , it was expected that KDKA-TV would eventually become a primary affiliate of the NBC television network . But the network was seeking to purchase Westinghouse 's Philadelphia stations , KYW radio and WPTZ ( now KYW-TV ) . When Westinghouse balked , NBC threatened to pull its programming from WPTZ and Boston 's WBZ-TV unless Westinghouse agreed to trade its Philadelphia properties for NBC 's radio and television properties in Cleveland . ( Related to the trade , Westinghouse received a cross-station waiver from the FCC to own the Cleveland properties due to overlapping signals with KDKA radio and channel 2 . ) The decision would lead to an acrimonious relationship between Westinghouse and NBC in later years . Two years after the ownership change , channel 2 became a primary affiliate of the higher-rated CBS network instead . KDKA-TV retained secondary affiliations with NBC until WIIC-TV ( channel 11 , now WPXI ) signed on in 1957 , and ABC until WTAE-TV ( channel 4 ) signed on in 1958 . Despite the ending of its commercial VHF monopoly , KDKA-TV did welcome competitor WIIC-TV on the air . KDKA-TV became the flagship station of Westinghouse 's broadcasting arm , Group W . During the late 1950s , KDKA-TV was briefly affiliated with the NTA Film Network , sharing the affiliation with WTAE-TV , WIIC-TV , and WQED . On November 22 , 1963 , newscaster Bill Burns provided almost three hours of live coverage after the shooting of President John F. Kennedy
shooting
Assassination of John F. Kennedy
KDKA-TV