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K3 - noise blanker works fine

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Bill Clarke

K3 - noise blanker works fine

Just had to mention that the K3's noise blanker set at t1-1 is excellent
for taking out a distant electric fence without causing any apparent
degradation to the received signal. It was a pleasant surprise, as most
noise blankers that I have experienced cause all kinds of receive problems.

Bill W2BLC

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Chad Wasinger

Re: K3 - noise blanker works fine

My two cents..
I find that I run in T1-7 for a lot of the power line noise I hear on 2 meters. Absolute fantastic job at removing the noise and not degrading the weak signal that is normally received on SSB nets 300-400 miles out. Every once in a while I engage the DSP NB on the first or second setting to remove some stranger noise.
I would also vote that the K3 is the best transceiver I've ever owned at removing various types of noise you find across the band.
What a great tool!

> Date: Tue, 12 Mar 2013 17:16:49 -0400
> From: [hidden email]
> To: [hidden email]
> Subject: [Elecraft] K3 - noise blanker works fine
>
> Just had to mention that the K3's noise blanker set at t1-1 is excellent
> for taking out a distant electric fence without causing any apparent
> degradation to the received signal. It was a pleasant surprise, as most
> noise blankers that I have experienced cause all kinds of receive problems.
>
> Bill W2BLC
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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Bruce McLaughlin-2

Re: K3 - noise blanker works fine

Not only is the noise blanker outstanding but the noise reduction also works
extremely well. It can significantly reduce the noise without major
alterations in the audio unlike most other such circuits I have seen in
other radios which either don't do much of anything or butcher the audio to
the point where it is unrecognizable and not copyable. I think Elecraft
really nailed these problems with the software which is probably the major
reason why both tools works so well.

Bruce-W8FU

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Chad Wasinger
Sent: Tuesday, March 12, 2013 5:26 PM
To: Bill Clarke; [hidden email]
Subject: Re: [Elecraft] K3 - noise blanker works fine

My two cents..
I find that I run in T1-7 for a lot of the power line noise I hear on 2
meters. Absolute fantastic job at removing the noise and not degrading the
weak signal that is normally received on SSB nets 300-400 miles out. Every
once in a while I engage the DSP NB on the first or second setting to remove
some stranger noise.
I would also vote that the K3 is the best transceiver I've ever owned at
removing various types of noise you find across the band.
What a great tool!
> Date: Tue, 12 Mar 2013 17:16:49 -0400
> From: [hidden email]
> To: [hidden email]
> Subject: [Elecraft] K3 - noise blanker works fine
>
> Just had to mention that the K3's noise blanker set at t1-1 is
> excellent for taking out a distant electric fence without causing any
> apparent degradation to the received signal. It was a pleasant
> surprise, as most noise blankers that I have experienced cause all kinds
of receive problems.

>
> Bill W2BLC
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net Please help support this email
> list: http://www.qsl.net/donate.html

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Tony Estep

Re: K3 - noise blanker works fine

On Tue, Mar 12, 2013 at 5:31 PM, Bruce McLaughlin <[hidden email]> wrote:
> Not only is the noise blanker outstanding but the noise reduction also works
> extremely well....
=============
I have to add my $0.02. The Spratly Island guys (9M4SLL) have been
very weak here, never more than S3, and to make matters worse I am
suffering from a plague of atmospheric noise on some bands at certain
times. It seemed that my only chance would be to get 'em on CW, since
the signals are so poor, but when I got home today they were spotted
only on 17 SSB. I tuned for them, but could hear only an occasional
syllable through S6 noise. Nothing to lose -- I turned on both NB and
NR and twiddled the knobs. Lo and behold, I could copy the op! Poorly,
but enough to make it worth calling him. And sure enough!! So I owe
that QSO entirely to the excellent noise handling of the K3. Both NB
and NR have advanced tremendously since the early versions, a tribute
to Elecraft's determination to keep improving their product after it
ships. Here is a clear-cut case where an apparently impossible QSO
happened because of great performance from the K3.

Tony KT0NY

--
http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
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Bill Clarke

Re: K3 - noise blanker works fine

I have to say that the NB and DSP have been the turning point for me.
Until this experience, I have not really been very positive about the
K3. Now - well, pass the Kool-Aide! My backup rigs will eventually be
hitting the road and the proceeds used for a the purchase of a second K3.

Those that know me will understand that this statement did not come easily.

Bill W2BLC

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Edward R Cole

Re: K3 - noise blanker works fine

In reply to this post by Bill Clarke

OK, here is another testament to the NB in the K3.

I have been plagued by an intermittent local noise source on 2m which
is so strong that it renders contacts 15 miles away nearly impossible
to copy (on SSB). I made a digital copy of the audio and sent it to
a receiver engineer in Sweden (who created Linrad) for analysis. He
told me that it looks like a raw electrical arc and his sw FFT NB was
unable to counter the noise.

I am running a NB digital mode (MAP65) on 2m-eme and its NB did lower
the noise amplitude but with no appreciable improvement in SNR so
only super-strong signals are decoded.

page two:

Having nothing to lose, I decide to try the NB in the K3. I played
with the setting and finally with it set to IF-MED-7 I achieved a
reduction of about 4 s-units (>20 dB) in the noise level resulting in
recovering about 70% of my normal eme sensitivity. I am impressed!

73, Ed - KL7UW

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