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Ok, the Chinese 811A's came in today and I replaced all the tubes with this matched set.
I noticed a difference when tuning it up, the Plate Current seems to be much lower than it was before and I am using less drive for the same results.

The manual said not to exceed 450mA on the Plate Current and 150mA on the Grid Current. I get to the 150mA on the Grid with about 400mA on the Plate Current, and I am driving it with a bit less drive than I was before.

So does it sound like I am in good shape now, I also have 3 extra tubes in case I have any further issues.

Thanks

Craig

[QUOTE="W1MSG, post: 240335, member: 13274"] Ok, the Chinese 811A's came in today and I replaced all the tubes with this matched set. I noticed a difference when tuning it up, the Plate Current seems to be much lower than it was before and I am using less drive for the same results. The manual said not to exceed 450mA on the Plate Current and 150mA on the Grid Current. I get to the 150mA on the Grid with about 400mA on the Plate Current, and I am driving it with a bit less drive than I was before. So does it sound like I am in good shape now, I also have 3 extra tubes in case I have any further issues. Thanks Craig [/QUOTE]

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