Skiatron - 4AP10


Equivalent VCR520
Similar type  
With different Vf  
CV number CV1520
Air Min. Ref. 10E/771

This radar tube has, instead of the standard phosphor screen, a screen of potassium chloride which is a material known as a scotophor or cathodochromic. The scotophor exhibits a white screen color until struck by the electron beam. The bombarded area turns to a magenta color under electron excitation and remains so indefinitely until infrared energy is applied to erase the image. (page 76, The CRT)