[AMPS] glass 3-500Z status

[Rich Measures]

>
>......
>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  


--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm