Quote:
Originally Posted by Eric H
Got an E-Mail from a local collector who had noticed I needed a 3KP4 for a Pilot, well he thought he had one, (or maybe) three, turned out he had four so he sold me three, along with two 7JP4's, one 8BP4, two 10BP4's and a NOS 5AZP4, which is an Aluminized version of the 5TP4 projection tube.
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Wow! I'll wager you have the only surviving 8BP4 without a brown center!
This tube was the ion burn king!
I tried to find a replacement for mine in about 1958 and although they were still listed in the catalog, neither the regional dealer, nor the home office had one or could get one.
I know that some people have done it, but you better check on the 5TP4 directly interchanging with the 5AZP4.
The "Z" needs a higher anode voltage and more shielding. I think the curve of face plate is slightly different.
James