Signal sources?

[mbates14]

I have a pile of raspberry Pis as I use them for development in my day job, but not for video. Not sure about the Chroma though, I am unaware. Also I havent seen a composite jack on them since the first model or two, So unless its hidden in the 3.5MM jack I dont see composite?

But then I need the modulator. Any modulator that anyone can recommend?

Also Digital converter boxes are out of the question. I live in the mountains of WNC now, and you cant get any stations except for MAYBE 1 with an amplified directional antenna. Also you can only get a couple radio stations both on FM and AM. Crazy.