[K2] Noise Blanker

[Douglas Furton]

I wrote a week or so ago for some advice about testing my K2 noise blanker.  From the replies I received (thank you), I now know that my blanker is probably working FB, but isn't well suited to blank the type of noise that plagues my QTH.

So, I would like to ask anyone with the K2 DSP option if any of the noise reduction schemes implemented digitally are good at blotting out the type of I can't seem to get rid of.  

The noise I'm complaining about sounds a lot like the type of RF hash one might expect a noise blanker to get.  In fact, I had a FT-450 that swatted this noise to nothing.

I have the K2 audio filter module, but am wondering if the DSP module might improve my situation.

I would appreciate any relies regarding how well the K2 DSP filter works compared to the analog filter.

Doug
K8EXB

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[Don Wilhelm-4]

  Doug,

I am not going to really answer your question, but give it some "food
for thought" - most true Noise Blankers will not work on RF hash (which
I would interpret as a "frying noise" mainly because it is too
constant.  If such a constant noise were to be blanked (the IF would be
interrupted for the duration of the noise), then you would also kill
reception.  There are some radios with buttons labeled NB that do more
of a "noise reduction" function rather than full blanking, and may be
effective for those more constant types of noise.

Yes, the KDSP2 does do Noise Reduction, and does it quite well.  Whether
it will handle your particular noise is to be determined.  If you can
find someone with a K2 equipped with the KDSP2, you would want to try it
at your location to see if it will handle your noise.  If you do borrow,
you may want to try several of the variety of setting available on the
KDSP2, so record your friends settings and restore them before you
return the K2.  Just a note - some users of the KDSP2 do not know that
the noise reduction parameters can be adjusted, and they just use
whatever the defaults are.  You may need something different than the
defaults, so some experimentation may be required.

73,
Don W3FPR

On 10/4/2010 9:00 PM, Douglas Furton wrote:

> I wrote a week or so ago for some advice about testing my K2 noise blanker.  From the replies I received (thank you), I now know that my blanker is probably working FB, but isn't well suited to blank the type of noise that plagues my QTH.
>
> So, I would like to ask anyone with the K2 DSP option if any of the noise reduction schemes implemented digitally are good at blotting out the type of I can't seem to get rid of.
>
> The noise I'm complaining about sounds a lot like the type of RF hash one might expect a noise blanker to get.  In fact, I had a FT-450 that swatted this noise to nothing.
>
> I have the K2 audio filter module, but am wondering if the DSP module might improve my situation.
>
> I would appreciate any relies regarding how well the K2 DSP filter works compared to the analog filter.
>
> Doug
> K8EXB
>

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