[R-390] VFO End points

[Barry]

Actually, it travels less than 1,000kc in ten turns.  It's a bit counter-intuitive, but since you have to tune past the zero mark on both ends by 3kc, then the range is only 996kc in ten turns.

The adjustment may affect one end more than the other, but I'm pretty sure it will affect both ends.

Regards,
Barry - N4BUQ

> Barry,
>    It goes more then 1,000 kc. It just isn't accurate at the ends.
>    The
> high end zeros at 3 past  and the low Zeros at 3 before which is a
> total
> of 6 off.
> I'll try the End Point adjustment, but I am afraid if I lower the
> upper
> point by 3 to zero beat on 1,000 then the low end is going to zero on
> -994.
> Maybe I'm wrong.
> Will see.
> 
> Thanks,
> Gordon
> N6WK
> 
> 
> On 5/24/2013 10:00 AM, Barry wrote:
> > If I'm not mistaken, the single endpoint adjustment affects the
> > overall range the PTO covers in 10 turns.  Yours is not quite
> > changing a full 1,000kc.  If you change the endpoint setting, it
> > should affect both ends.
> >
> > I think you're within specs but you can probably get it closer if
> > you want.
> >
> > Someone please chime in here if I'm incorrect.
> >
> > Regards,
> > Barry - N4BUQ
> >
> > ----- Original Message -----
> >> From: "Gordon" <gordon at n6wk.com>
> >> To: R-390 at mailman.qth.net
> >> Sent: Friday, May 24, 2013 11:28:37 AM
> >> Subject: [R-390] VFO End points
> >>
> >> I noticed today that my 390A zero beats at +003  and at -997
> >> so it is 3 high on one end and 3 low one the other. It is pretty
> >> close
> >> to dead on at the 500 Mark.
> >> Will the single End point adjustment at +000 fix this or make the
> >> low
> >> end worse?
> >>
> >> Thanks,
> >> Gordon