[R-390] r390a and Q Multiplier

[rkofler at aol.com]

 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
>
>
______________________________________________________________
R-390 mailing list
Home: http://mailman.qth.net/mailman/listinfo/r-390
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:R-390 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html