[Elecraft] KNB2 Performance

[W3FPR - Don Wilhelm]

Tom,

I believe you are speaking of functions that can be (and should be)
implemented in DSP (if it is to 'search', some intelligence is required).
The KDSP2 de-noiser does provide a lot of noise reduction similar to what
you are describing - unfortunately, it is a bit more than $30,40,50.

The KNB2 deos a good job with impulse noise above the set threshold.  The
blanking width can be modified by changing a capacitor if a different width
is needed for a particular noise situation.  Beyond that, the addition of
the KDSP2 adds the intellegence and levels of control to deal with other
types of noise.

73,
Don W3FPR

> -----Original Message-----
>
> With technology available today I wonder if it would be possible
> to design a
> 2-stage tracking NB!
> Just in the same manner as auto beat canceling.
> I'm a better builder than designer , but can't help myself
> throwing out some
> thoughts on this.
> Stage 1 when turned on search and lock on the noice pattern and
> stay locked.
> Stage 2 workes same way as stage 1 , but can be turned on after
> stage 1 to
> lock on a second pattern.
> Each reactivation starts a new search for patterns.
> Do some of you designers think this is possible?
> I would gladly throw an extra $30,40,50 for a high performance NB.
>
> Tom LA1PHA K2/100 3829 , K1 1491
>
> ----- Original Message -----
> From: "Darrell Bellerive" <va7to at rac.ca>
> To: <elecraft at mailman.qth.net>
> Sent: Monday, July 18, 2005 7:06 AM
> Subject: Re: [Elecraft] KNB2 Performance
>
>
> > Perhaps one of the design wizards that reads this list could
> come up with
> > something like this http://www.ussc.com/~turner/syn_blank.html
> adapted for
> > HF
> > and the K2.
> >
> > My guess is that noise blanker effectiveness is directly related to the
> > characteristics of the noise. One blanker's design specs are
> effective on
> > noise with certain pulse widths and levels, whereas another
> noise blanker
> >
>
>
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