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1. Re: [TenTec] Failure Modes for 811a tubes? (score: 1): Author: Steve Berg <wa9jml@frontier.com>; Date: Thu, 17 Oct 2013 18:47:25 -0500; I bought a nice Centaur amplifier from a list member a few years ago, and finally got around to putting it on the air. I took out the 572B tubes that were installed in the amp, and put the original 8; /archives//html/TenTec/2013-10/msg00307.html (10,983 bytes)
2. Re: [TenTec] Failure Modes for 811a tubes? (score: 1): Author: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; Date: Thu, 17 Oct 2013 20:12:23 -0500; I've worked on a few of these. Yep, the 811's are the best way to go. I don't suggest the 572's as nothing is to be gained in power or life. As to the filament not illuminated, I suspect a bad solder; /archives//html/TenTec/2013-10/msg00312.html (13,020 bytes)

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