[Boatanchors] Tubes stuff

[Jim Wiley]

Its a photo-tube.  Several types in the "900" series of tubes are built 
the same way.  Used with an external light source focused with a lens 
onto the photo-cathode and an amplifier for photo-relays,  picking up 
sound from motion-picture film, etc.


- Jim, KL7CC


LARRY D GODEK wrote:
> Lastly is a JAN CEQ-923, at least that's what it looks like to me made by continental Electronics.  Not the traditional construction.  Looks like it might be some sort of light, maybe, gathering type.