Tom, you say
>The graphite anode traps more gas, and Amperex
>seems to not "cook" the tubes as long while pumping them down.
Looking at the 'history' in the books, they seem to have been making
this point about graphite anodes for at least 60 years, so it seems a
bit strange that Amperex are not putting the effort in. But maybe they
want to keep production costs down at the expense of quality.
Has anyone done a 3-500Z with a tantalum anode that absorbs gas as it
gets hotter?
73
Peter G3RZP
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