[Hammarlund] HQ140X questions

[C McGregor]

That 56K decoupling resistor tells the tale.  It  provides the preferred
connection for a panadaptor.
-Chuck  K7MCG

On Wed, Dec 13, 2023 at 1:33 PM Richard Knoppow <dickburk at ix.netcom.com>
wrote:

>     Maybe, but its a peculiar mod. The blue wire will be the normal IF
> feed from the mixer to the IF, so it appears that either the IF is being
> fed to something external or its a means to feed an external signal at
> the IF frequency to the IF. One would think an SSB adapter would be fed
> from later in the IF chain. Maybe someone else will recognize what it is
> or figure it out.
>
> On 12/13/2023 9:45 AM, Ray G3XLG via Hammarlund wrote:
> > Just had a look Richard, the centre pin of the strange chassis connector
> > goes via a 56K resistor to pin 5 the anode of V3 the mixer.
> >
> > A blue wire also on pin 5 goes up through the chassis to T1 between the
> > mixer and the first 1st IF.
> >
> > I think you are right it's a Ham mod, perhaps to feed a signal generator?
> >
> > 73
> >
> > Ray G3XLG
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> SKCC 19998
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