RCA TK-42/43 Cameras

[TVBeeGee]

How many of you had experience with the RCA TK-42/43 color camera? Were they a constant maintenance hog, or did yours perform well? Was component and thermal drift a problem, or did you suffer from "tweaker drift" (adjusting too often) as RCA warned about in their setup instructions. If you had more than one TK-42/43, were your cameras difficult to keep matched? Just curious.

I never worked with the TK-42/43, but saw many of them in operation when touring various TV stations in my youth. Plumbicons seemed to make them quickly obsolete. Before long, it seemed the TK-42/43 cameras were history, often replaced by the TK-44 or Norelco's PC-70/72.

(My first experience with color broadcast cameras was with a set of three brand new Norelco PC-72's at WOUB-TV in 1973.)

If you worked with the TK-42/43, what did you think of them?