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I never worked on kine recorders but toured NBC Burbank where they were still standing where abandoned. The biggest chore (according to those who worked there) was driving the exposed film to a processor and back in the 3 hours between NY time and LA time. I found it surprising NBC didn't have onsite processing; even our 40-market affiliate had not one but two processors and color at that. They were eventually retired by U-matic of course.
We had a library at the station and the Fink book was required reading. But that was 1977. Could you be overthinking the mechanics and discounting long-retention phosphors? RE interlace, TV projection equipment never had sufficient registration accuracy to achieve interlace even if it were physically practical to operate at field rate/60fps.
Kine recording was never wholly satisfactory. That's why the networks leapt upon the VR-1000 when it became available and Ampex couldn't build them fast enough. You've watched kines, what does it look to you is going on RE the artifacts?
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