Pair of Protelgrams on the 'Bay

[cbenham]

Originally Posted by old_tv_nut

but you need 3 to make color (unless you use a wheel)

Hmm. That's an idea. I've wanted to build a color wheel projector with
a Protelgram for a long time. The wheel would need to be only 15 inches in diameter, but the picture would be 25 inches diagonal.
Sounds like a good winter project. #;^)