[R-390] r390a and Q Multiplier

[Barry]

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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