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Rudy-
As WA2ISE said, you would need the three separate color signals for your three CRTs, and the easiest way to get them would be to hack apart a small color TV. To do this project, you should read a lot about how color TV signals are received and sent to CRTs, and compare all of that to the similar details of how a black-and-white CRT TV works. The big nightmare you would have to work out, to make a three-CRT projector, would be positioning everything to get any kind of viewable image at all. It may be impossible with a lens set away from the CRTs. As an additional note, if you did not already know this, in the 80's there were kits for sale to "turn your TV into a big-screen projector". They essentially put a big round lens in front of a 13" color TV that had its contrast and brightness turned way up, and made a very dim but viewable picture in a dark room. You had to switch the yoke wires to the CRT so its picture was upside down (then the lens flipped it correct again).
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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