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Originally Posted by Jeffhs

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BTW, I cannot imagine how or why that image you posted is so far out of focus. If the CRT is in fact designed for use in television receivers, the focus control must be very far off (turned to one extreme or the other of its rotation), or else something is very seriously wrong with the focus circuit in the TV set itself. Did you check the set's focus rectifier tube (1V2, 2AV2, etc.) and replace it with a known good tube? If this tube is defective or even just weak, it can throw the focus off by quite a bit.

No, it's a radar CRT not meant for use in any television. The base pinout is the same as a 7JP4 but it has an additional acceleration anode on the side. I hacked it into a Motorola VT71 just to see if I could get anything on the screen.