[Elecraft] K3: Question about data modes...

[David Cole]

Joe,
Is there something else that might explain the actions of the signal in
the waterfall of MixW?  

I have tried DATA A in REV sideband, (I thought that would fix the
issue), and the signal does not stay pinned to the same frequency under
the MixW calibration marks...  As I tune up, MixW moves the calibration
marks, but the signal moves in the opposite direction...  This happens
no matter if in REV or not, In DATA A, it never tracks correctly.  If I
reach over and switch to AFSK A, it tracks as expected...  Stays pinned
to the frequency marker, which is moved as I tune.

I would expect that only changing to REV would correct this, but it does
not.  Hence why I question my understanding...
-- 
Thanks and 73's,
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On Wed, 2014-07-16 at 10:20 -0400, Joe Subich, W4TV wrote:
> In simple terms:
> 
> AFSK A is LSB, AFSK TX filter (MENU: AFSK TX) is available and
> controlled by PITCH (Mark), audio input uses data selection.
> TX and RX EQ are disabled.  Receive dual tone (dual peak) filter
> is available.  Frequency (VFO) display reflects *MARK*
> 
> DATA A is USB, AFSK TX filter is not available, default center
> frequency is set by FC (shift), audio input uses data selection,
> TX and RX EQ are disabled.  Receive dual tone filter (dual peak)
> filter is not available. Frequency (VFO) display reflects *carrier*.
> 
> 73,
> 
>     ... Joe, W4TV
> 
> 
> On 2014-07-16 10:03 AM, David Cole wrote:
> > Hi all,
> >
> > What EXACTLY is the difference between "AFSK A", and "DATA A".
> >
> > Here is why I ask:
> >
> > In AFSK A Mode:
> > While using MixW, and looking at the MixW screen, and in USB on the K3,
> > as I tune using the knob, the MixW screen shows the signal stuck to a
> > frequency on the top calibration marks on MixW.  The signal never moves
> > from the frequency indicated on the MixW software in the waterfall.
> >
> > In DATA A Mode:
> > All settings the same with the exception of switching from AFSK A to
> > DATA A.  The signal moves relative to the frequency marks on MixW.  i.e.
> > if the signal started at 14.0000, as I tune the knob, MixW tracks the
> > frequency, moving the scale above the waterfall, while the signal
> > appears to move independently of the waterfall calibration marks...
> >
> > I have tried REV sideband on the K3, and the same thing still
> > happens...
> >
> > Is there a resource I can read telling me EXACTLY what each data mode
> > does?  I have KE7X's book, and that does not explain why I am seeing
> > what I am seeing...  At least not to me...  I am putting my macros
> > together, and need to get my head around EXACTLY what the two modes do,
> > as they set up the radio.
> >
> >
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