[Elecraft] K3S - K3 Noise Blanker and Noise Reductor

[Don Wilhelm]

Ian,

A noise blanker will work best on impulse noise - such as automotive 
ignition noise or lightning spikes.  It needs a fast pulse rise time to 
trigger.

A noise blanker works by punching a hole in the signal - and if the 
holes are too wide or too frequent, you will find what is left of the 
signal path to be distorted.

A noise blanker will not work on band noise or other forms of more 
constant noise.  That is what Noise Reduction is for.

Noise Reduction works on correlation - the algorithm looks for what 
might be a real signal and builds a filter around it.

73,
Don W3FPR

On 10/13/2016 8:11 AM, Gian Luca Cazzola wrote:
> I am tha satisfied owner of an Elecraft K3S. I think that for a cw operator (I work 99percent CW) it is a great rig, can be the absolute best on the ham rigs market.
> It has only a really poor noise blanker.
> I live in a town, downtown. I have noise from residential electric lights or other electrical gears. I see on my P3 panadaptor‎ noise from radar or other military wide trasmission.
> On none of these noises the NB work.
> I tried different NB setting, but each, IF NB and DSP NB, none of them reduce really noises.
> Only NR seem to have a limited little effective ‎ result on band noise.
> I would like your opinion about NB and NR and know from  K3 es K3S owners living ‎in town how they set them.