[Elecraft] K3 NB

[Graham Kimbell]

I'm really surprised by all these negative comments about K3 NB.  Mine 
has been very effective on electric fences (I have one!) and power line 
noise.

Try this from 5 years ago:-
http://www.g3tct.co.uk/GB3ANG_processing.mp3

[you'll hear first the GB3ANG beacon on 70MHz (tropo, 607km) in ssb 
bandwidth (2.3kHz) with no noise blanking. There's bad power line noise. 
  At 6.7seconds in, the noise blanker is switched on (set at dsp t2-6, 
IF narrow 3). At 21.4secs in, the mode is switched to cw - the audio 
tone remains the same, and the bandwidth changes to 900Hz.  At 30.5secs 
in, the APF is switched on until 56.4secs.  At 61.5secs we revert to usb 
mode and at 68.3secs, the noise blanker is turned off.]

73
Graham

On 19:59, riese-k3djc at juno.com wrote:
> ...
> the NB on the K3 doesnt work well on power line noise,,, this is my
> experience as well
>
>