Should have known earlytelevision.org would have something:
http://www.earlytelevision.org/phonevision.html
Edit: I believe the picture of the scrambled image is a time exposure and doesn't properly show the jittery venetian blind effect. I think it's a multiple exposure of direct and delayed strips superimposed, which just looks like a bad ghost.
Also see:
http://chicagotelevision.com/pay.htm
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Last edited by old_tv_nut; 08-10-2016 at 02:59 PM.
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