On Sat, 06 Sep 1997 14:12:03 -0700 Harald Garberg Gule <hggule@online.no>
writes:
>The Communications Quarterly Winter 1995 issue have one article on
>using
> the 4CX 1600B.
> While on this subject, do anyone know if there is any problem related
>to
> using 2 each 4cx 800A in class AB1.
The Alpha 91b and the QRO HF2500DX both use a pair of 4CX800's Harald.
It might be to your advantage to obtain the instruction manuals.
Although not a perfect solution, it is possible to use individual bias
controls to set the recommended idle current for each tube. In any event
be certain that you use a well regulated and protected screen supply. The
tubes and your ham neighbors will thank you.
73.....Carl KM1H
> I have two (not matched)( is that a problem ?)of them, but remember
> someone saying that it was hard to get low enough C on
> 10 meters. Any hints or ideas around ?
> Now need some info so I can start making a linear myself, have been
> collecting parts too long....
> Harald, LA6LHA
>
>
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