RCA 921 
Written by AnubisTTP on 2006-12-17  


The 921 is a side-viewing phototube with an argon fill gas. The tube has an unusual form factor, with two metal caps sealed to a glass tube. Each cap acts as one pin for the device. As with the 1P41, this tube is intended for relay applications.

A scan of the RCA Photosensitive Devices and Cathode Ray Tubes catalog, which contains specifications on this tube, can be found at World Power Systems.


RCA 921

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