[QuadList] Cap Disc now Tape Speed

[Don Norwood]

Hi Dave:

All of your description is basically correct except for one thing.  In record, the capstan is actually locked to the head tach, and that is important because that is what maintains the correct spacing of the video tracks regardless of what the vertical frequency is.  Since the head is also locked to the V rate, when it "slows down" for color, the capstan is also slowed proportionately and the tracks are written in the correct place.  The same process is used whether the capstan motor is AC or DC.

Don
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