I also have an amendment to make: A broadcast veteran who worked at WOR-TV as a summer relief behind-the-scenes'er (mainly a cameraman) from 1966 to 1971 noted that in terms of telecine, it was RCA all the way. Prior to 1968, the station's telecine and master control were at the Empire State Building (the same place from which King Kong fell to his doom
), and the equipment there included TK-26 color and TK-21 monochrome film chains. (Their studios and videotape facilities then were at 1440 Broadway.) After Channel 9 consolidated their studios, VT facilities, telecine and master control under one roof at 1481 Broadway (in what used to house NTA Telestudios) in 1968, the station upgraded its telecine to RCA TK-27's - thus all three commercial indie stations in NYC used TK-27 film chains. (Apparently, GE's claims of WOR using PE-24's in their ads was wishful thinking on that company's part.)
This same veteran mentioned that WNEW-TV (where he also worked) had TK-27's.