[Elecraft] K3 Noise Reduction

[Dave]

I have that same issue...
I have some very dirty grow lights about two blocks from me.  They are 
dirty as they come...  Splattering across 80-20 meters.  The K3 has 
never been able to adequately clean up the crud from them.

In defense of the NB/NR on the K3, the signals are on the order of S7 to 
S9, so my expectations may be too high for the K3.  I just hope the K4 
NB/NR work better in my environment.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 12/15/21 06:36, Pete Smith N4ZR wrote:
> Last weekend during the 10 meter contest I was experiencing very loud 
> line-noise-like interference when my antenna was pointing south.  I 
> tried both my K3's Noise Reduction and Noise Blanker functions, and was 
> unable to find any setting that gave useful relief.  With the noise 
> blanker, in particular, I noticed that when it was on, not only was the 
> buzz still very strong, but it seemed as if all CW signals on the band 
> were being hum-modulated.  As soon as I turned off the noise blanker, 
> the CW signals cleaned up.  Is there something wrong with my radio, or 
> an adjustment issue, or is this interference simply too strong? 
> Obviously, I'll be trying to track it down, but it's not there all the 
> time, so that could be tough.
>