Hi Rich,
> I have a suitable oil filled filter capacitor if u need one.
Yes, thanks very much.
> ..........
> >I also note that Svetlana now makes an 812 tube. Not sure how they
> >compare to 811's, but recall they are a hotter version of the same.
> the 812 is similar, but has a substantially lower Mu.
I was really thinking of the 813. Don't think Svetlana is making
that, though.
> >I am most interested in the 4CX400A, or perhaps there is another
> >tube even more suitable. The 4CX400A looks to need 2.5KV at 400ma
> >to deliver 600 Watts (ICAS). It is certainly more effcient than
> >811's or 572B's.
> doubtful. Triodes have a lower minimum peak anode v capability than
> tetrodes.
Not doubting you, just confused then. Consider (From Svetlana's Specs):
2 x 572B 4CX400A
PV 2400 2500
PI 500 400
P in 1200 1000
P out 600 610
Eff. 50% 61%
Tnx,
Doug, W4DXV
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