#39
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Hi Dan,
I'm testing the tubes in a Stark 9-66 tester. It's a Canadian Hickock. I am losing a little bit of the awesome dynamics. Not much, but enough to notice when I put in new tubes. The Transconductance tests less than 75% of new, around 3500 uMho. Gain and emissions seem ok, not much change there if any. I don't understand the mechanism that is causing the transconductance to drop when the gain and emissions are still good. Tom
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