I've had good experience with rejuvenating B-8091's as well. Also one source I
had recently for them also rejuvenated a bunch of them from an old find. I
agree... Nice that these big beautiful tubes can recover because they're few
and far between. Love Noroughs tubes!
Bill
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You received
Had an 8091 in my stock with a couple marginal cathodes. There was a small
amount of poisoning on the '5', '8', and '2'. Zapped them with a sustained
helping of about 12ma each which cleaned them right up. Strange things is,
the process seemed to rejuvenate all the others and make them all
