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I have an indextron tube, in a Sony vidimagic projector.
The projector is neat to watch in operation. on this tube, the beam is guided OPTICALLY, and there ia an index PHOSPOR, which glows green. You can see it looking at the BACK of the tube. I also have the manual.
My projector was a garbage find. the manual cost, I think, less than $10.00 . BTW, the electronics to guide the beam is mostly small scale digital ic's, on a baord about 5x7inches. It is pretty neat to watch in operation.
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