[Elecraft] K3/K3S noise blanker performance greatly enhanced (at my QTH) -- need testers

[Gary Smith]

David,

My father made something like that many 
years ago. I'm thinking it is still here, 
one of the many things yet to be uncovered 
in his shack. Its in a blue plastic 
enclosure, I'll know it when I see it. 

He'd been a ham since 36 or 37 and he was 
an EE, worked for General Dynamics in 
their Sub division. He made an audio 
filter for CW that managed to not have 
noise affect the generated signal unless 
the signal was garbled past 
intelligibility, in which case no tone was 
generated. I remember him remarking how 
much more narrow the audio was and that it 
was narrower by far than the narrowest CW 
filter on his Collins.

It would regenerate that garbled CW tone 
into a regenerated tone devoid of any 
noise in the background. It had to have a 
decent enough sound to work with but I 
remember hearing the pure generated note 
being free of any garbage with it.

73,
Gary
KA1J


> The simplest noise reduction is a narrow band CW filter!  The ultimate 
> noise reduction for CW would be to decode the signal, and regenerate it, 
> but that is currently only possible for signals that are already clean 
> an well formed.
> 
> Decode and  recreate might be the ultimate solution for hearing aids, as 
> well.
> 
> -- 
> David Woolley
> Owner K2 06123