[Elecraft] MP3 Demo of the K3's Noise Blanker under some rather severe conditions

[Tom Hammond]

Folks:

This afternoon my line noise was particularly bad, even giving VP6DX a run
for its money on some bands.

Just for the heck of it, I punched [NB] on the K3 and... there was VP6DX,
and... the noise was GONE!!!

This was some of stronger line noise I've had out here (in the sticks) for
quite a while.

I was so impressed that I mad an MP3 of the differences without and with
the NB enabled.  The MP3 file can be found at:

    http://www.n0ss.net/k3_nb_demo_22feb2008.mp3

    NOTE: If you choose to manually type this URL into your browser, be
          aware that the blank spaces are filled with UNDERSCORE " _ "
          characters and NOT blank spaces as might appear above.

If you can't access the file from this link, go to www.n0ss.net, select
the K3-Specific web page (just being built, so there's virtually NOTHING
on it other than this file) and click on the file.

The source bands for the recording were 15m and 17m, and among others,
VP6DX was one of the 'sample' stations.

I used a fairly wide bandwidth in order to give a worst-case scenario for
the KNB3. Most of the blanking was due to the IF blanker, with just a little
DSP NB thrown in for good measure.

Nice work Wayne & Lyle!

73,

Tom Hammond   N0SS