A RCA TK-41C restored to working condition!

[old_tv_nut]

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Slide 146 shows the overall measured responses in October 1949, with improper green. This is the camera that resulted in complaints of unnatural color (faces too red).

Slide 147 shows the measured responses from the corrected design in November 1949.

Any slides labeled March 1953 are from measured cameras with proper responses. Of the four measured, I chose the two with the most difference between them to analyze.

Subsequent slides show calculated responses based on the information on dichroics in Widdop's paper, plus published specs for the trimming filters and image orthicons. These calculated curves are not as smooth as the measured ones. It is not known if the difference is due to differences in the measuring instruments.

Slides referencing the prism optics are based on measurements of a prism by Jay Ballard plus published image orthicon specs. The overall result including orthicons, if measured, may be smoother than calculated, but that is unknown.