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In Reply to: Bias on new Yaqin MS-30L - how often to check? posted by Biff on October 1, 2015 at 09:25:29:
Tube break in is real and is measurable. What you describe is consistent with cathode forming, and you might want to check the bias weekly until it is consistent. (Don't get too obsessed, say 0.45V +/- 5% after 1 hour of running)
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Follow Ups
- RE: Bias on new Yaqin MS-30L - how often to check? - Caucasian Blackplate 10:18:24 10/02/15 (1)
- Seems stable since I posted this. - Biff 11:52:06 10/02/15 (0)