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Originally Posted by Steve McVoy
Bob, the only sets that use the 5AP4 are the prewar Andrea 1-F-5 and KT-E-5. The 1802 P4 (5BP4) was used in all the other 5 inch prewar sets from RCA, GE, Meissner, etc.
There were also some home made postwar sets made with the 5BP4, but no production sets.
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Thanks Steve,
That helps fill out the history as the box the tube came in has an Andrea mailing label on it. It also has a very supple rubber mask. The tube turned up at a hamfest in Cortland N.Y. - No chassis to be found.. glad to have found the tube !
I'll hold onto the 1804- miracles still happen !
Many Thanks Once Again !
Bob
