Quote:
Originally Posted by old_tv_nut
931a was probably the most common photomultiplier tube. 4422 is also a photomultiplier, but I haven't found references to say what the difference is. Maybe just better specs.
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yes i was asking is the rca 4422 photomultiplier tube. a sub or a sub replacement for the 931aphotomultiplier tube.
i have the tub spec for the 931a but can not find any specs or info for the rca 4422 tube all i can say is thank you for the info any info helps maybe some one has or knows if the 931a & 4422 are interchageeable or will sub each other so thanks again. Cliff1050