[Elecraft] KX3: Is this a serious error in KX3 Firmware affecting the IQ output?

[Tom Blahovici]

Hi
If this is the case is there any way to determine exactly where or when this happens? Does it happen as I described?  Can one use the BW command to  actually compensate?  Does it occur in USB only? 
Thanks for any insight. 
73's Tom

On Sep 22, 2014 7:25 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
>
> Tom, 
>
> I don't know the answer, but what I can inject is the fact that the KX3 
> shifts to Weaver demodulation at some point, it may be at 1.7 kHz. 
> That would affect the signal peaks without substantially changing the 
> sound of the signal on the KX3. 
>
> 73, 
> Don W3FPR 
>
> On 9/22/2014 7:13 PM, tomb18 at videotron.ca wrote: 
> > Hello,I received reports recently about the signal peaks that are seen in software based panadapters appear to shift by approximately 1.25kHz when the bandwidth control is changed from 1.8 to 1.7. in USB mode on the K3 
> > 
> > 
> > At 1.8 the IS command returns 1500 in USB and the BW command returns BW0180 
> > AT 1.7 the IS command returns 1500 in USB and the BW command returns BW0170 which is normal behavior. 
> > 
> > 
> > I have investigated this and it indeed happens when the bandwidth is changed from 1.8 to 1.7 
> > The sound of the signal nor the tuning of the radio is changed. However, a QSY to the original peak will detune the signal. 
> > This has been confirmed in Win4K3Suite, NAP3 and HDSDR. 
> > 
> > 
> > Can someone check this please on the PX3? 
> > This is on the latest firmware of 2.19 
> > 
> > 
> > Thanks, Tom va2fsq 
> > 
>