Quote:
Originally Posted by JSM092495
I'm aquiring a high end 1958 Zenith, I have no clue on the condition of the tube, until I pick up the set at the end of this month, but I suspect it's weak. I need some help on some substitutions since the original tube is not common.
I have a NOS 21AMP4 or a 21ALP4, if any of those would work that'd be great. Thanks.
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The 21CX is a low G2 voltage CRT. It also is a straight gun tube so the neck is shorter.
