[Elecraft] K3 - Audio/IF filtering definitions

Don Wilhelm w3fpr at embarqmail.com
Tue Nov 27 17:56:54 EST 2012


Rick,

Are you confusing HiCut/LoCut with the RX (or TX) EQ?  There are no 
bands to the HiCut or LoCut, just limits to the DSP produced passband.

73,
Don W3FPR

On 11/27/2012 5:37 PM, Rick Bates wrote:
> The filter sets the rough bandwidth limits.  Then you can shape the
> resulting audio with the equalizer to your particular need.
>
> You can also narrow the gross bandwidth with the width control and/or
> re-center the bandpass with the shift control and/or narrow one edge of the
> bandpass (at a time) with the high/low cut.
>
> Think of the high/low cut as a gross equalizer, similar to the treble/bass
> controls on an old stereo.  They CUT above (for high cut) and below (for low
> cut) at the threshold that you set.
>
> This leaves you with several methods at your disposal to shape, enhance or
> eliminate portions of the audio band so you have the best chance of getting
> what you need from the signal.
>
> And then on top of that, you also have a very effective notch filter.
>
> 73,
> Rick wa6nhc
>



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