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By the way, back when I did an analog IC chroma demod/matrix design at Zenith (to provide RGB outputs for the unitized-gun CRTs), I had to use some (lousy) on-chip vertical PNP transistors in the color difference paths, and it was necessary to do a statistical analysis of the component matching of those as well as the matrix resistors to show that the 95% ellipsoids of color variation were not significant.
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Old TV literature, New York World's Fair, and other miscellany
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