[Elecraft] KX3 PBT

[Wayne Burdick]

Howie,

I may be able to make the control more responsive. Meanwhile, you  
might experiment with the NORM function as a means of switching  
between two different width settings. Holding NORM will alternate  
between the default (400 Hz in CW mode) and a "floating" setting that  
you establish.

73,
Wayne
N6KR


On Sep 24, 2012, at 8:29 AM, Howard Hoyt wrote:

> I have been twisting the KX3's PBT I/II knob madly in an attempt to
> change BW or CF rapidly, but in reality when I turn it more slowly the
> function actually changes more rapidly.  Two possible explanations are
> either the encoder pulse rate exceeding the I/O refresh rate, or the
> speed with which the filter DSP can reconfigure.
>
> I would love to be able to change CF and BW more rapidly, being  
> spoiled
> by the instantaneous response of my old Drake R-4B's analog IF
> parametric filter.  If the speed limitation with the KX3 is indeed a
> refresh issue, is there a way to increase the I/O refresh rate for the
> PBT encoder to allow for faster filter change via the knob? Of course,
> if it is a DSP horsepower issue, it is what it is.
>
> The overall performance of the KX3's receiver is so far superior to  
> the
> R-4B, I don't want to use the R-4B much any more (well for that reason
> plus tube, old capacitors, size, power requirements and other issues,
> but that is another story).
>
> Howie - WA4PSC
>
>
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