[R-390] Dumb Mechanical Alignment question

[Al S.]

R

On Thu, Jul 16, 2026, 9:04 PM Paul Roche via R-390 <r-390 at mailman.qth.net>
wrote:

> Quick update. That paper is over my head.
> But I used musical generator and fed in a modulated 1 VOLT SIGNAL into
> antenna terminal (that’s what it took for me to hear the tone). I could
> find the tone at 0.9 MHz , 2.9 MHz, 4.9 MHz, 6.9 MHz, etc up to 28 MHz.
> Heard my tone on EACH frequency and jiggling the MHz knob made signal come
> in better on most of them. So I think that’s good. But signal barely
> audible at 1 volt!!!
>
> I’m not gonna do anything for a while.
> Sent from my iPhone
>
> > On Jul 16, 2026, at 6:16 PM, Jim Whartenby via R-390 <
> r-390 at mailman.qth.net> wrote:
> >
> > Larry's paper on oscillator levels is applicable to both the R-390/URR
> and the R-390A/URR?Regards,Jim
> > Logic is a systematic method of coming to the wrong conclusion with
> confidence.  Murphy
> >
> >    On Thursday, July 16, 2026 at 04:03:55 PM CDT, Renee K6FSB via R-390 <
> r-390 at mailman.qth.net> wrote:
> >
> > I thought I saw a paper by Larry a while back on osc levels and I did
> > have a copy. My memory still good...it is attached.
> > Renée
> >
> >
> >
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