Low band TV in Britain.

[David Roper]

Originally Posted by Electronic M

CBS's field sequential system lost the format war...CBS took their existing field sequential broadcast studio ran it through a transcoder, and were the first post NTSC approval station broadcasting NTSC!...They continued with that kludge for years until the field sequential gear broke or they had got over their loss enough to stomach buying proper NTSC color cameras.

You're thinking of the Chromacoder, a Rube Goldberg use of sequential color field cameras to broadcast NTSC. I am quite sure network use of the Chromacorder didn't last much beyond 1954. In fact, CBS in Hollywood was equipped with TK-41s by the fall of that year. I'm not sure if any definitive evidence exists as to exactly how long that technique was used, but probably not outside the very early, still experimental period following the approval of NTSC color. It required a ton more light and (surprise, surprise), gave an inferior result compared to an all-electronic color camera.