A reason why DVD players don't have RF modulators

[wa2ise]

Originally Posted by Electronic M

He probably mixes the two S-video lines and has a switch in the color line to disconnect it.

That's essentially it, though here I created a low pass luma filter, a bandpass chroma filter and merged these to create a composite video signal that would look good on older color TV sets (the one that use a notch filter). I switch that and an unfiltered luma only signal.