[Elecraft] Hardware Noise Blanker on the K3

[juergen]

Hi Toby

Frankly the hardware noise blanker on the K3 is mostly useless.

I dont really dont even know if its "analog" in nature. I have compared it to many other analog blankers on other radios,  if it does work its barely perceptible.

 I must have a faulty analog blanker. The  way people speak about how well it works i just dont see in practice. I have 2 k3's and have used my clubs K3's and they are all the same. All i seem to hear is distortion and no blanking effect.  


The DSP noise blanker on the K3 is a different story. On any of the  number 7 settings it will take care of most power line noise.  I find that   you really need  to use the 7 setting even for mild power line noise. On true analog noise blankers you could take out mild power line  noise without aggressive  settings which just cause distortion. The K3's DSp noise blanker is impressive even with all the distortion, so yes it does "work"

If you  do have a radio from the past  that works in your location I would suggest you keep it. That is what I have done, I have radios here that I use on the  low bands  that beat the K3's DSP blanker and they just conventional analog  blankers. The big advantage is that I can use these blankers on low settings and still have a "decent" receiver without distortion.


Noise blankers on radios have always been luck of the draw. I know of  several people who have changed radios for nothing more than good noise blanker performance. These days operating anywhere in big cities you really need a decent noise blanker.


John


--- On Sun, 6/13/10, Toby Pennington <toby423 at embarqmail.com> wrote:

> From: Toby Pennington <toby423 at embarqmail.com>
> Subject: [Elecraft] Hardware Noise Blanker on the K3
> To: Elecraft at mailman.qth.net
> Date: Sunday, June 13, 2010, 6:41 PM
> Someone with power line
> noise.......does the hardware noise blanker work very well
> on s9 power line noise.  IF so,  is the SSB signal
> distorted ?  DSP blankers work to some extent but
> distort the audio. 
> 
> Toby  W4CAK
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