[R-390] r390a and Q Multiplier

[jm]

Surely it would be a great addition to the 390. Rarely some is on sale and
if so, prices are astronomical.

Jose EA8DCP

El jue., 16 may. 2019 a las 17:31, Barry (<n4buq at knology.net>) escribió:

> There's a youtube video of just that setup.
>
> https://www.youtube.com/watch?v=KfaQyGrJFhU
>
> Thanks,
> Barry - N4BUQ
>
> ----- Original Message -----
> > From: "rkofler--- via R-390" <r-390 at mailman.qth.net>
> > To: larry41gm at gmail.com, josemic at gmail.com
> > Cc: r-390 at mailman.qth.net
> > Sent: Thursday, May 16, 2019 11:14:59 AM
> > Subject: Re: [R-390] r390a and Q Multiplier
> >
> > I know these are rare, but if you can find a Hammarlund HC-10 SSB
> converter,
> > it has product detector, slot filter, passband tuning, and plugs right
> into
> > the IF out jack on the R390A. I used one with my R390A for years with
> very
> > good results.
> > Roger K7DDG
> >
> >
> > -----Original Message-----
> > From: Larry H <larry41gm at gmail.com>
> > To: jm <josemic at gmail.com>
> > Cc: R-390 Forum <r-390 at mailman.qth.net>
> > Sent: Wed, May 15, 2019 9:35 pm
> > Subject: Re: [R-390] r390a and Q Multiplier
> >
> > Jose, According to the hd-11 doc, that would be the right place to
> connect
> > it.  Let me know how that works out.  I've been thinking about a good
> notch
> > filter, myself.  You might try hooking it up temporarily with a tube
> > extender to see how it works.
> >
> > Regards, Larry
> >
> > On Wed, May 15, 2019 at 2:44 PM jm <josemic at gmail.com> wrote:
> >
> > > Hi guys,
> > >
> > > I've been using a Heathkit HD-11 Q Multiplier with my old
> Hallicrafters.for
> > > a long time and I wonder whether  it is worthy to attach a Q
> multiplier to
> > > the 390.
> > >
> > > There is no muvh information about the issue in the Pearls of wisdom
> and
> > > the only reference is a bit discouraging,.  A colleague that followed
> the
> > > HSN indications (#24) found that the audio was a bit lower with the
> HD-11.
> > > He tapped the Q multiplier in pin one of V204.
> > >
> > > Has anyone had experiences about the result of using a Q multiplier as
> a
> > > way of improving (if so) the performance of the 390?.
> > >
> > > Is is correct the connection to pin one of V204 ?.
> > >
> > > I think that not only would be the use of the notch facility a good
> > > addition, but a very smooth fine tuning would be of help.
> > >
> > > Thanks and regards
> > >
> > > Jose Isasa EA8DCP
> > >
> > >
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