[Elecraft] [K3] Notch filter vs JT65?

[Bob McGraw K4TAX]

A couple of things to check. Be sure the Line Output from the radio is not set to high such that it is driven into distortion.  

Also check the computer CODEC gain isn't too high and it being driven into distortion. This is set in Windows Sound device Recording Level.  

Also make sure the ALC is ON and handling the signal. Perhaps some attention on the input of the receiver is in order. 

The receiver Noise Blanker should be OFF. 

Bob, K4TAX


Sent from my iPhone

> On Aug 27, 2017, at 12:53 PM, Don Putnick <donnieput at gmail.com> wrote:
> 
> He's really close - 2 miles. At that distance, any power would wipe out
> JT65. I'm venturing to guess it's DSP artifacts. The humps are too smooth
> and asymmetric to either side of the notch in the spectrum display.
> 
> On Sun, Aug 27, 2017 at 8:00 AM, GRANT YOUNGMAN <ghyoungman at gmail.com>
> wrote:
> 
>> Rather than blame the K3, your sound card or “artifacts”, I’m going to
>> stick my neck out and suggest he’s one of those guys that thinks everything
>> works better when you crank the gain all the up …
>> 
>> How far away from you is he?
>> 
>> Grant NQ5T
>> K3 #2091, KX3 #8342
>> 
>> 
>> 
>> 
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