>
>Jon says:
>
> >How much does gain typically get reduced by?
>
>I maintain that in grounded cathode, it doesn't. We have the complication
>here that I'm talking in terms of the plate swing during the RF cycle. As
>the grid goes positive, the plate current increases, and the plate voltage
>drops. At the peak of positive grid volts, plate current is a maximum and
>plate voltage is at a minimum. That voltage is set by the load impedance and
>the plate current at the peak of the cycle - which is fixed by the grid
>volts. The gain isn't directly related to the plate volts, but to the drop
>in signal handling - the gain compression point has come down. At lower
>inputs, the gain will be much the same - especially with a tetrode, where gm
>is very loosely related to plate volts.
? semi-agreed -- and more so with a grid-driven pentode.
>
>Looking at GG, that will be appear to be a bit different, because if the
>drive and fed through power are the same, but the tube is producing less
>output because there's less plate swing, then the total output power is
>less. Effectively, the gain appears to be less.
>
>Still, hell has frozen over, as you say, Jon!
>
? Rejoice not. Other issues are likely to persist. Examples:
1. Denial that standard AC circuit analysis is valid for R/L VHF
parasitic suppressors.
2. Denial that dipmeters can find grid-resonance in g-g amps. . .
3. Insistance that RF resistance of nickle-chromium (resistance-wire)
alloys increases as freq. decreases. [sic]
4. Stonewalling his own proposed mathematical problem of 28 November,
1996. (a problem whose solution proved to be a tad embarrassing).
5. Attempted ex post facto promotion of an ex-Eimac employee (J. P.
Miklos).
6. Attempted ex post facto demotion of a retired Eimac employee. (W. B.
Foote).
- cheers, Peter.
- cheers, Jon.
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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