>
>Rich said:
>
>>" but they discovered that 3-500Zs have a cutoff frequency that's above 2MHz"
>
>I expect Rich, that you managed a wry smile on hearing that!
>
// I chortled.
>Maybe it's because the large electrode spacing is such that at low
frequencies,
>the electrons haven't reached the plate before the grid phase changes, and
they
>get lost. Or maybe accelerated so much that they heat the plate up instead of
>providing RF out?
>
// The latter sounds a tad more incredible.
"I can believe anything, provided it is incredible." - Oscar Wilde
On the other hand, if the plate/anode contains any Ni and Cr, perhaps the
Rauchian phenomenon of increasing RF R with decreasing frequency is a
factor below 3MHz?
>Phineas T. had it about right...............
>
// Phineas Taylor Barnum ( 1810-1891), the Great American Master of
sucker fleecing.
>
cheers, Peter
- R. L. Measures, 805.386.3734, AG6K, www.vcnet.com/measures.
end
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