[R-390] r390a and Q Multiplier

[Larry H]

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
>
>