[time-nuts] beryllium oxide

Marco IK1ODO ik1odo at spin-it.com
Fri Jan 16 19:44:24 UTC 2009


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





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