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I noticed the same thing, Kevin. Both the Sams and the SC service data calls one control contrast and the other control detail. The contrast control is in the second video amp stage and the detail control is in the final video output stage. Since the video output stage control has a capacitor in the circuit, the gain will be vary according to the frequency; hence, giving the higher frequency signal more gain and better fine detail. I also noted that SC uses a 1N60 diode in the video output stage for DC restoration. That may be another reason that SC produced a better picture than the RCA.
Last edited by Tom9589; 02-05-2016 at 09:46 AM.
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