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

[Tom Hammond-2]

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

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[n6wg]

Wow!
I was trying to work the CQ 160 SSB tonight, and the noise level
was such that it just wasn't worth my time to sit there trying to
figure out what I was hearing.

Now desparately looking forward to my K3 (in April?).
73, Bob N6WG


----- Original Message -----
From: "Tom Hammond" <[hidden email]>
To: <[hidden email]>
Sent: Friday, February 22, 2008 5:59 PM
Subject: [Elecraft] MP3 Demo of the K3's Noise Blanker under some
rather severe conditions


> 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
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

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[Stephen Prior]

As someone who frequently has to live with high line noise levels up to S8/9
at times, that's particularly good news!  Thanks for posting it, a very
impressive demonstration.  My K3 hopefully won't be too many weeks now!

73 Stephen G4SJP


On 23/2/08 01:59, "Tom Hammond" <[hidden email]> wrote:

> 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
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

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