[Boatanchors] ID a strange tube

W4AWM at aol.com W4AWM at aol.com
Thu Feb 9 17:52:50 EST 2012

In a message dated 2/9/2012 5:11:40 P.M. Eastern Standard Time,  
smulder3 at cox.net writes:


The 927 is a photo cell. It was used, among other things, as a sound on  
film pickup tube on old 16MM Bell and Howell sound projectors and  probably 
others as well.
John,  W4AWM

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