[Elecraft] [K3] Attenuator and soundcard digital modes

[Brian Alsop]

Don,

Noise reduction is unavailable for K3 digital modes.  You get a N/A when 
trying to use it.  (If you really want to try it you'd have to use USB. 
  A high potential exists for poor copy with NR on.)

Oddly enough NB is selectable.  I can imagine some of the higher 
settings of NB can likewise scramble copy, though I haven't any data to 
support that.

Attenuator on is a good idea if you (and your sound card) can live with 
the signal strength it produces.

73 de Brian/K3KO


On 7/5/2011 23:39, Don Putnick wrote:
> After having a less than successful time with PSK31 during the 13 Colonies Special Event, I think I need to learn more about noise reduction. I've read the section in KE7X's manual, but I'm looking for guidance specific to the soundcard digital modes.
>
> 1) It appears the K3's attenuator is fixed at -10 dB. Is that the case or is it reprogrammable?
>
> 2) What is the collective wisdom on noise reduction for soundcard digital modes: K3 attenuator, K3 noise reduction, PSK31 software noise reduction, some combination of the three, or none at all?
>
> Thanks and 73,
> Don NA6Z K3 #5495
>


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