[Elecraft] K3 Notch causes distortion on SSB RX

[Phil Wheeler]

At time like this I appreciate having 
"non-critical" hearing capability (deaf in one 
ear, ringing in both). My K3 sounds great under 
all conditions -- and no fan I have makes any 
noise :-)

Phil W7OX

On 7/28/14, 6:05 PM, Bill W2BLC wrote:
> Hello Sam in Ole Angelo,
>
> The distortion you are noticing is very real and 
> has bothered me to no end. It is discussed on a 
> couple of websites, that I am sure the "experts" 
> will jump in and tell you all about.
>
> I did some research on the subject and a lot of 
> experimentation. I eventually found the 
> distortion can be reduced (or enhanced if you 
> like being annoyed) by changing the menu values 
> of AGC SLP. I have mine set at 6 and it makes 
> the warble of the ANF (Automatic Notch Filter) - 
> far less than the 12 default setting. Some of my 
> other menu settings (for the arm chair copy 
> user) can be found at: http://www.w2blc.net/K3.htm
>
> I am sure others can expound upon the whys and 
> wherefores of the software anomaly that causes 
> this annoyance. Suffice to say, invoking the ANF 
> on my other rigs does not cause distortion on 
> received signals.
>
> As always, your mileage may vary.
>
> Bill W2BLC K-Line