[Elecraft] Auto Notch Revisited.

[Fred Jensen]

I rarely use the manual notch on CW, I've had other rigs with notch 
filters, and I rarely used them either ... it seems that the filter in 
my head is enough.

I'm not on SSB very much [compromised hearing, not mode-aversion], and 
I've occasionally used the auto-notch on SSB when in 
longer-than-a-contest-QSO mode.  It's always worked very well for me.  I 
suppose there is some accompanying distortion, that's what happens when 
you punch out a narrow part of the baseband, but honestly, it reduced 
the carrier to where I couldn't hear it.

I think, but do not know, that the performance of several of the K3 DSP 
"features" are closely related to the AGC parameters being used.  This 
makes sense, the AGC is distorting the signal possibly before the other 
"features" are getting the number stream.  All of that is above my pay 
grade.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 7/31/2014 3:12 PM, David Cole wrote:
> Hello,
> I find I must also agree with the complaints regarding notching...  I
> just cam from a Icom 756 P3, and the notching was far superior to the
> K3.
>