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21CBP4A in place of 21WP4X??
I picked up a rebuilt 21CBP4A for $5 at a "junk shop" in NH today. I'm restoring an Admiral 19G1 that came with a 21WP4X, the base of which is broken. It looks identical, and wondered if it's a suitable replacement.
One other question; the sticker on the bell of the tube that says in bold, bright letters saying "DO NO USE AN ION TRAP WITH THIS TUBE. IF REPLACING A TUBE THAT USED AN ION TRAP, DO NOT USE AN ION TRAP" Why on earth is this?
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