>I'm intrigued by the prospect of not having to fuss with tuning every
>time I change frequencies and especially not having to obnoxiously tune
>up on the air.
Unless you have a 50 plus or minus j zero ohm DC to light antenna, you
are gonna have to fuss with an antenna tuner as you move about, Dave. .
. If hams had been using solid state linear amplifiers since 1910, and
some scientist invented a temperature-resistant, rebuildable device that
was 25% more efficient, and did Not require the use of an antenna tuner,
it would widely hailed as a technological breakthrough.
>So, I'm looking into designing and building a 1-1.5kw broadband solid
>state amplifier that needs no tuning, and considering using Motorola
>MRF-150s and combiners.
Why not use two, 50v MRF-430 FETs in Class AB1 push-pull - and you won't
need combiners? Motorola has info sheets on the MRF-430.
> Has anybody out there done. this? If so was your
>resulting linearity acceptable, what transistors did you use, and what
>sort of power supply did you come up with? Would you be willing to
>discuss your results with me?
>Also of interest is possibly a broadband tube amp design requiring no
>tuning on the HF ham bands, any input is appreciated.
>
>thanks,
>
>Dave
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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