[Elecraft] K2 Noise Blanker (KNB2) Demo

Fri Jun 21 20:07:16 2002

Hey, wow, did you guys just hear the wonderful WAV file that Tom, N0SS,=20
produced?  It consists of a cw qso that was completely in the clear, but he =

kept switching on a spark coil to try to blank it out.  That coil nearly=20
did the job perfectly.  But I sure he could do better if he tried.

best wishes,

dave belsley, w1euy

--On Friday, June 21, 2002 3:52 PM -0500 Tom Hammond N=D8SS=20
<[email protected]> wrote:

> Hi Folks...
>
> Over the last couple years, there have been several discussions about how
> effective the K2 Noise Blanker (KNB2) really is. Well, this morning, on
> 15M (21.025) I found the best demonstration of it's effectiveness that
> I've EVER experienced. K1LIK was working an SV (Greece) station. Neither
> station was terribly strong, and I had a pretty bad line noise problem at
> that time.
>
> In desperation, I turned on the KNB2... and the noise just DISAPPEARED! I
> didn't believe it... I tried it again... and again it was like night and
> day.
>
> I was so impressed that I made a 1:30 WAV file of part of the QSO and I
> now have it (UNedited, except to limit the length of the file) on my web
> site at:
>
>    http://home.earthlink.net/~n0ss/knb2_demo.zip
>
> There are a lot of other items out there as well, so feel free to rummage
> through the DOWNLOAD page at:
>
>    http://home.earthlink.net/~n0ss/
>
> You CANNOT listen to the file on-line! It is too large a file (nearly
> 2MB) and it would eat up my monthly download quota in a heartbeat.
> However, I have ZIPped it into an 814kB ZIP file which you can download
> by going to the URL shown above. Once you have it on your PC, THEN you
> can play it.
>
> If anyone is interested enough to pull the file and upload it to THEIR
> server, for others to access, that would be just fine with me. If you do,
> PLEASE publish the address and I will then remove it from my site, to
> make room for other items of possible interest.
>
> Enjoy.
>
>   73,
>
> Tom Hammond   N0SS
>
> P.S.
>
> Yes, I know, there ARE some types of noise which the KNB2 will not
> address. But for those that it WILL address, it usually handles them
> quite well.
>
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----------------------------------
David A. Belsley
Professor of Economics