Robert, >Some power tubesmay use it internally.
As far as I know, from many discussions with power tube manufacturers, no power tube uses beryllia, except for that conduction-cooled Eimac tubes. It's simply not needed. Other tubes (not power ones) may be different, but I never heard of any beryllia in them. Marco IK1ODO / AI4YF _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
