The article describes a six-meter conversion to a Swan
Mark-1. I have also converted a Swan M-1 to six and found
it to be a fine oscillator at 75Mhz. Suppressors cured that
one.
Paul
>
> >Bill Orr gives an example of single ended GG
neutralization
> >in the Eimac amateur service newsletter #29. I believe
he
> >discusses the subject in his handbook but would have to
look
> >and see. You really have to make several mistakes in
layout
> >to require neutralization in a GG amp.
> >Paul
> >
> Are we talking about neutralization at the parasite
frequency (i.e., the
> anode resonnce) or neutralization at the operating
frequency? I had an
> Orr handbook and I do not recall seeing such a circuit,
Gonset tried
> neutralization on a 4, 811A amp. and it was somewhat less
than stable.
>
> cheers, Paul
>
> >PAUL HEWITT
> >WD7S PRODUCTIONS
> >QRO HOMEBREW COMPONENTS
> >http://wd7s.home.att.net
> >
> >
> >----- Original Message ----- >
> >> // In Eimac's *Care and Feeding...*, a method of
> >>neutralizing push-pull
> >> G-G amplifier is discussed. However, neutralization of
single ended G-G
> >> amplifier is not discussed. The reason seems to be
that
> >> there ain't no such animal.
> >> I spoke with a guy who owns two AL-1200s. The newer
one
> >> was "neutralized". The older one was not. He said
that
> > >the older amp. is more stable.
>
> >> > ...
> >> cheers
> >>
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