>
>......
>Svetlana, Penta, and Triton Services had glass bottles. These, plus
>CPI/Eimac, Burle, EEV and Thomson, had ceramic metal power tubes with
>handles.
>
>Dick Gross of D&C Electronics of Spring Hill, Florida, was showing the
>Triton bottles. He had graphite plate 4-500 (yes, 500),
? Eimac used to make a 4-500A with a metal plate/anode . It had a 10v,
10.2a filament, so it had more emission than either a 3-500z or 4-400A/C.
>.......
tnx for the updates, John
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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