[Elecraft] K3: DSP NR for Data A mode?

[N5GE]

Have you tried using a narrower filter in the K3 or using the K3 NR?

Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Fri, 20 Jul 2012 09:03:20 -0700, Bill Frantz <frantz at pwpconsult.com> wrote:

>Is it possible to implement Noise Reduction in the DSP for Data 
>A mode? Or is it a really stupid idea?
>
>The PSK software I use -- cocoaModem for the Mac -- has a noise 
>reduction mode which works reasonably well when it is receiving 
>a broad spectrum signal -- 2 KHz or more. It does not work well 
>at all when I narrow the DSP bandwidth to eliminate strong 
>nearby signals. This situation leads to the annoying situation 
>where I can copy a weak station when the bandwidth is broad, but 
>not when I have narrowed it to eliminate strong nearby stations. 
>The strong nearby stations overload my SignaLink AtoD converter 
>which keeps me from copying the station. It seems to me the DSP 
>is in a position to apply noise reduction before the narrow band 
>filter, if that is the best way to perform noise reduction.
>
>Cheers - Bill, AE6JV
>
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