>I saw a RCA 1 kW broadcast TX last week that was running new Amperex
>4-400's that were graphite plate, without the fins that are on the
>Eimac/Triton style (that look like 3-500Z plates). The plates were
>smooth cans, and they were glowing cherry red in the modulator. They
>were made by the Covimag factory in France, which Richardson gets
>their 'amperex' tubes from. Anyone have any 3-500 experience with
>tubes having this sort of plates in them?
>
I use two in a SB-220. They work well but they have a bit less vacuum
than the metal-anode version.
cheers, John
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
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