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Wayne,
I think you're on to something!
I bypassed the RF section of the generator, and ran composite to my monitor. The monitor has the advantage of telling me when it's receiving an NTSC signal, so I should know when it's on frequency. Trouble is, it never really gets to the correct frequency. So it looks like I need help troubleshooting the divide by 12 part of this thing, but the trouble is I don't have a reliable way to measure the frequency. I do have a meter with a HZ function, but it loads the circuit too much throwing it off. Right now I'm running off the assumption that the main 189khz gen is good, because it's crystal controlled. So I'm thinking if I can figure out what's up with the horizontal sync section I might be able to get this right.
It looks like an off-frequency signal when viewed on the monitor, a lot of diagonal lines across the screen but I can't get them to line up no matter what I do.
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Evolution...
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