S-Video on genesis

only if you wire it yourself internally. you have to get the signal straight from a chip.
"Designed for RF output"? Not so! The Genesis output via RGB is fantastically sharp, and a vast improvement over RF.

S-Video is not quite up to the standard of RGB, but is still a mod worth making if your TV supports it. It's easy on a later Genesis 2 or Genesis 3, since you only have to connect a couple of wires.