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This gem, almost unobtanium, was designed to be a low-cost oscilloscope CRT and appeared in the RCA 151 oscilloscope.

This one is probably one of the earlier units, but RCA didn't always date code things in a way you could decipher. It's packed in the original box (disintegrating) with the original paper pack material. This is a spare for my 151 scope, and goes with the 885 (in the background) posted earlier.

This, along with the image multiplier I posted a week or so ago, is one of the more unusual tubes in my parts cabinet.

(This post is for that special someone on Poal, you know who you are.)

This gem, almost unobtanium, was designed to be a low-cost oscilloscope CRT and appeared in the RCA 151 oscilloscope. This one is probably one of the earlier units, but RCA didn't always date code things in a way you could decipher. It's packed in the original box (disintegrating) with the original paper pack material. This is a spare for my 151 scope, and goes with the 885 (in the background) posted earlier. This, along with the image multiplier I posted a week or so ago, is one of the more unusual tubes in my parts cabinet. (This post is for that special someone on Poal, you know who you are.)

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[–] • 1 pt

There are other 1" CRTs out there, the most common being the 1CP1 made in the 50s. There were literally tons of these made for military and other use, you may be able to pick up a few of those for under $50.