To: | amps@contesting.com |
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Subject: | Re: [Amps] 813 efficiency |
From: | peter chadwick <g8on@fsmail.net> |
Reply-to: | g8on@fsmail.net |
Date: | Tue, 26 Feb 2013 20:55:37 +0100 |
List-post: | <amps@contesting.com">mailto:amps@contesting.com> |
Carl, >The 813 was way underated as are many other tubes of that era, my own use of them over decades indicates an ICAS Pd of 200-250W is more realistic and use a little air on the glass. I show just a little color on SSB voice peaks at 1200W for 4 tubes. On CW in a contest enviroment there is a fairly steady dark red< I'd agree about the carbon anode ones, but does that really apply to the metal anode ones? 73 Peter G3RZP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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