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RE: Vintage TungSol JAN-CTL-6L6WGB tubes

Posted by Steve O (A) on November 17, 2024 at 18:56:51

In Reply to: Vintage TungSol JAN-CTL-6L6WGB tubes posted by Akolegov88 on November 17, 2024 at 14:21:18:

The tube in your pic is a classic TS 5881 despite 6L6GB designation. 5881 specs out to be a little more rugged than a true 6L6GB or a 6L6G although most other specs are about the same. Usually a 5881 can replace a 6L6, G, GA or GB but not necessarily the other way around. 5881 does not replace a 6L6GC. While electrical characteristics are mostly equal the physical electrode structures of a TS 5881 are unique compared to those of a 6L6G, GA, GB or GC. I wouldn't expect the physical differences to matter much in application but some would disagree.

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