Radio Shack TV modulator with S video input pretty good

[wa2ise]

Picked up one of these at a store that is closing for around 95% off ($1.45)!
#150-2526
Turns out that they did some prefiltering of the luma before combining it with the chroma. What this does is to remove the luma that would end up being misinterpreted by early color TV sets (and modern sets using a "notch filter", not a comb filter), creating crawling rainbow patterns on football referee's shirts. This means that our vintage color TV sets will present better looking images with this prefiltering.