[AMPS] Re: BIG amps!

[Buddy Lumpkin]

Hmmmmm,
        I wouldn't think so considering the screen acts more like a throttle and
the grid will actually change your class of service. Could you imagine one tube
conducting about 350 degrees and the other only conductiong 340? Although these
may both draw the same plate current, this is definately not a matched situation.
I would think that a matched pair of tubes and lead lengths all being the same,
it is probably better to allow different power levels at the plates by a small
margin then trying to correct it with grid voltage.
For what its worth
    -- Buddy

George T. Daughters wrote:

> hi john,
>
> i always enjoy reading your posts about *real* amps, tetrodes where
> even the handles have handles!
>
> <snip>
>
> > Setting the plate
> > current identically, using the screen voltage, results in greatly differing
> > RF output. So a compromise was found, with one screen at 1300 and 1600 on
> > #2. With that, the RF was close on each side.
>
> i'd LOVE to know if the RF output would be the same (close?) if you
> used the SAME screen  voltage, and different CONTROL GRID  bias to
> obtain equal plate current.  is there any chance you could check
> this????
>
> vy 73,
>
> George T. Daughters, K6GT
>
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