> http://cticomtec.com/CTI/pla800.html
>
> "Triodes are Good, Tetrodes are Better....
>
> Unlike triode amplifiers, the PLA800 uses tetrode tubes, which have a
> control screen grid. The screen grid not only adds to the amplification
> factor of the tube, but also controls the electron flow to the plate. When
> current regulation is used for the screen grid, as with the PLA800, plate
> and screen currents are limited to their maximum value. As a result you
> will not overdrive the PLA800 creating sideband distortion or splatter.
> Increasing the drive power beyond 50 watts, does not increase the power
> output. Because of this self-limiting feature, an ALC circuit is not
> needed. The amplified audio, as in SSB service, is clear and clean, void
> of sibilance and distortion."
That's pure 100% nonsense.
Current limiting actually INCREASES IMD when you hit the limit.
The only plus is it save the tube from damage!
Voltage regulation is what reduces splatter, not current regulation.
73, Tom W8JI
W8JI@contesting.com
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