I know we all have our own unique noise environment but I am curious what
settings others
use for reducing the background noise on SSB.
Not for really digging into a noise issue but for just reducing the background
noise for comfortable listening.
I have been playing around with the different
@mailman.qth.net
傳送日期︰ 2012年11月8日 (週四) 9:33 AM
主題︰ [Elecraft] K3 DSP NR for SSB, settings you like ?
I know we all have our own unique noise environment but I am curious what
settings others
use for reducing the background noise on SSB.
Not for really digging into a noise issue but for just reducing
Is it possible to implement Noise Reduction in the DSP for Data
A mode? Or is it a really stupid idea?
The PSK software I use -- cocoaModem for the Mac -- has a noise
reduction mode which works reasonably well when it is receiving
a broad spectrum signal -- 2 KHz or more. It does not work well
Have you tried using a narrower filter in the K3 or using the K3 NR?
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member
On Fri, 20 Jul 2012 09:03:20 -0700, Bill Frantz fra...@pwpconsult.com wrote:
Is it possible to implement Noise Reduction in the DSP for Data
A mode? Or is
Note that NR is not available in DATA A mode -- K3 manual p25:
NR turns noise reduction on. It doesn’t apply to DATA or FM
modes, or with AGC turned off.
Ray identified why I would like the K3 NR to work in DATA A when
he said, NR algorithms -need- a broad chunk of spectrum. If
the DSP NR
Bill,
I have not found 24 bit soundcards to be a requirement for data modes.
16 bit soundcards will do just fine.
Yes, NR is not available in Data modes because it distorts the signal
and would result in reduced copyability. The object is to produce as
clean a signal as possible to the
:11 AM
主題︰ Re: [Elecraft] K3: Simple NR/NB feature suggestion
*Another suggestion is to have the main tuning knob change the left number
and
the VFO B knob change
the right number. This way you can increment or decrement either.
*
That would work too.
*frankly I don't think it is a good
︰ Tim Tucker ae...@worldwidedx.com
收件人︰ Elecraft Reflector elecraft@mailman.qth.net
傳送日期︰ 2011年05月18日 (週三) 11:11 AM
主題︰ Re: [Elecraft] K3: Simple NR/NB feature suggestion
*Another suggestion is to have the main tuning knob change the left
number
and
the VFO B knob change
the right
I like Tim's suggestion and would like to try/Beta test.
73
Dave G3WGN WJ6O
-
73
Dave G3WGN WJ6O
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-Simple-NR-NB-feature-suggestion-tp6375085p6377133.html
Sent from the Elecraft mailing list archive at Nabble.com.
I've followed the various discussions on how well the NR/NB works as
compared to other rigs. I've used NR functionality in many different rigs,
as well as just about every after market solution. In my area, the QRM
makes NR/NB absolutely a necessity.
Part of makes the NR NB seem easier to use
Tim, I like this idea for the same reasons you articulated so well.
Regards,
Al W6LX
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Post:
Subject: [Elecraft] K3: Simple NR/NB feature suggestion
I've followed the various discussions on how well the NR/NB works as
compared to other rigs. I've used NR functionality in many different
rigs,
as well as just about every after market solution. In my area, the QRM
makes NR/NB
I don't. See below...
On Tue, 17 May 2011 13:43:15 -0700, Tim Tucker ae...@worldwidedx.com wrote:
I've followed the various discussions on how well the NR/NB works as
compared to other rigs. I've used NR functionality in many different rigs,
as well as just about every after market solution.
Good suggestion. I like it.
73, Charlie, K4ZRJ
Sent from my MacBook Pro.
On May 17, 2011, at 4:43 PM, Tim Tucker wrote:
I've followed the various discussions on how well the NR/NB works as
compared to other rigs. I've used NR functionality in many different rigs,
as well as just about
Another suggestion is to have the main tuning knob change the left number and
the VFO B knob change
the right number. This way you can increment or decrement either.
Frank - W4NHJ
--
View this message in context:
*Another suggestion is to have the main tuning knob change the left number
and
the VFO B knob change
the right number. This way you can increment or decrement either.
*
That would work too.
*frankly I don't think it is a good idea to make a change like you suggest,
when the current
Hello group,
What are the optimal NB/NR settings for use with AM and AM-S? I'm
interested in using those features for those times when I SWL, but can't
seem to find a setting that doesn't overly alter audio quality. The NR for
example seems to reduce the dynamic range, making audio sound very
James,
The only answer I can give is experiment. There is no setting that is
good for any particular mode, but the setting of NB/NR must be
customized for the noise source. That noise source will vary from
location to location, and from time to time.
The best I can offer is to familiarize
If possible I'd like to slip a non-APF item into the stream:
I'm looking for a reference on how to *use* the NB and NR functions.
I've read the archive stuff about how they work, but I'm still not
able to get much benefit from either one, and Amazon doesn't seem to
carry K3 NB/NR For Dummies.
I have a copy of the K3 NB/NR for dummies book, I got it at globalexchange
I'll send you the whole thing to your personal email. Enjoy.
Date: Mon, 1 Nov 2010 13:55:14 -0700
From: k6...@foothill.net
To: elecraft@mailman.qth.net
Subject: [Elecraft] [K3] NB/NR Info Request
If possible
Now that the K3 firmware is mature and the DSP noise reduction feature
works extremely well, isn’t it time for the firmware to retain NR
after power cycling? I’m not asking for memory of per band/mode NR
settings (although that would be wonderful!), but NR users should not
have to turn
In addition to power up memory, I'd really like Mode memory. I find my CW DSP
settings to be considerably different than my SSB DSP setting (and a real
PITA to change them).
- 73, John
Steven.Zabarnick wrote:
Now that the K3 firmware is mature and the DSP noise reduction feature
works
David Woolley (E.L) wrote:
The main source of published research on real time noise reduction of
audible signals seems to be the hearing aid industry. I just came
across this article suggesting that hearing aid noise reduction
strategies make people think that the noise is less sever,
Bill W4ZV wrote:
David Woolley (E.L) wrote:
The main source of published research on real time noise reduction of
audible signals seems to be the hearing aid industry. I just came
across this article suggesting that hearing aid noise reduction
strategies make people think that
Bill W4ZV wrote:
[about NR and SNR]
I've been watching this thread with interest. For a few years and several
different
radios, I've been repeating the same test:
1) Tune around with a bandwidth of about 400 Hz. Find a weak CW signal close to
the noise
which I can't copy 100%.
2) Try all
I recently had an issue with electric fences (living in a rural environment),
the AGC PLS did not seem to make a lot of a difference and the noise blanker
was unable to mask the loud clicks.
Now with Beta 3.27, while everyone is talking about noise reduction, I
notice that the noise blanker can
I have had some results like Richard, on 40 meters the Chinese dragon
has been active again and in the past the K3 is useless against this type
of radar. Much to my surprise it blanked the Dragon this time, I have
some distant power line noise that I was also never able to blank and
now the K3
Which noise blanker are you and Richard talking about - the hardware
blanker or the DSP blanker?
Bob NW8L
On Sat, Aug 29, 2009 at 10:48 AM, Merv Schweigertk...@flex.com wrote:
I have had some results like Richard, on 40 meters the Chinese dragon
has been active again and in the past the K3
Bob Cunnings wrote:
Which noise blanker are you and Richard talking about - the hardware
blanker or the DSP blanker?
Bob NW8L
On Sat, Aug 29, 2009 at 10:48 AM, Merv Schweigertk...@flex.com wrote:
I have had some results like Richard, on 40 meters the Chinese dragon
has been active
Bob,
Both! But mainly the AGC PLS which has become very effective
Richard - HB9ANM
Richard Squire wrote:
Bob Cunnings wrote:
Which noise blanker are you and Richard talking about - the hardware
blanker or the DSP blanker?
Bob NW8L
On Sat, Aug 29, 2009 at 10:48 AM, Merv
Bob, for me its both, on the Dragon it takes both to do the job,
DSP T2-5 and IF Nar 5 removed the Dragon quite well ..
On the distant line noise I can sometimes get by with just the
IF blanker, but usually takes both there also. But less aggressive
settings.
Merv KH7C
Which noise blanker
Steve Ellington wrote:
I just had a CW QSO on a noisy 80m. Here's what I noticed with NR set for
F1-3. BW set for 2.5 kHz.
QRN very loud! I pushed NR. Band goes almost totally silent. Calling CQ
with
the bug was like being in TX mode but I was using QSK as always.
Wow...Nice
and
Subject: RE: [Elecraft] [K3] K3 NR
Date: Wed, 26 Aug 2009 22:19:23 -0400
I prefer the sound of the 3.25 version for ssb, its
cleaner and somewhat less bright (flatter in response).
I had to tweak the RX EQ to add some bass in the 3.27
version or it sounds harsh in my headsets (I dont use
Thanks for the nice explanation Bill. It is effective but weird. Somone
needs to make a movie.
Steve
N4LQ
n...@carolina.rr.com
- Original Message -
From: Bill W4ZV btipp...@alum.mit.edu
To: elecraft@mailman.qth.net
Sent: Thursday, August 27, 2009 7:12 AM
Subject: Re: [Elecraft] [K3] K3
I come back to 3.25 also ; was much better with 3.25. Here audio is much
lower with 3.27.
73, Laurent F6DEX
--
View this message in context: http://n2.nabble.com/K3-NR-tp3514982p3518767.html
Sent from the [K3] mailing list archive at Nabble.com.
P.B. Christensen wrote:
Until I purchased
the '7800 back in 2005, the only other radio I've owned that would produce
ultra-low-pitch CW was the TS-870 but I never bothered trying low pitch CW
reception until I tried it with the Icom.
The TS-930S had an infinitely variable PITCH
low based on my experience with the 930. I still have my 930 and may have
to drag it out to see what 50 Hz sounds like, but that sounds awfully low
based on my previous experience.
Not too many rigs have the audio capabilities to produce a reasonably flat
response to 100 Hz and below. So,
I agree alsoWayne and the boys hit it just right for me. Great job. Very
noisy 40M today and the combination of the NB 3-3 and AFX pulled real
understandable voices out of junk. I will play with the setting for awhile
until I fine what is optimal for me but all in all it is just splitting
Brett Howard wrote:
As far as the shift you're mentioning are you talking about the fact
that the FC star moves to the freq that you have pitch configured for?
The filter is still centered in the IF land but it looks like a shift
because the K3 tells you about its filters in AF terms.
Lyle:
Just played with the NR in both SSB and CW, on 80 and 40.
First, I can hear the change of the filters now without turning things on
and off, as you mentioned it would work. The frequency response is
decidedly less flat (less bassy) than the sound of 3.25. For CW, the 3
and 4 settings
] On Behalf Of Lu
Romero - W4LT
Sent: Wednesday, August 26, 2009 10:09 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] K3 NR
Lyle:
Just played with the NR in both SSB and CW, on 80 and 40.
First, I can hear the change of the filters now without
turning things on and off
I just downloaded the new utility and Beta 3.25. The DSP NR is much better
in terms of not reducing the volume as much. I have never been a fan of NR
because it always (on all rigs that have it not just the K3) sounded to me
that the volume was reduced so much that by the time I turned the AF
Agreed. After about 6 minutes of exhaustive testing (hi!) I can hear a
noticeable difference. I still get some volume drop when NR is switched in,
but when I increase AF Gain to compensate the noise level remains low.
Well done!
Paul WW2PT
NZ0T wrote:
I just downloaded the new utility and
Yes you're right Steve!
After reading your comments below, I have now set my AGC THR high and
SLP low, this REALLY does improve the NR function on both CW and SSB.
(previously I had my AGC settings more or less at default values)
Maybe others may wish to try this.
Thanks.
73, Deni
F5VJC
Steve
Hello Gordan, well my AGC settings are now THR 008 and SLP 000
I'm not saying this is best or optimum but it certainly improves the
action of NR.
I'm still experimenting, but found ( thanks to Steve), that the default
AGC values for me gave ineffective NR.
Be aware that you may find strong
The NR can do wonders... there were several QSOs I made that most likely
would not have been possible without it.
On the other hand, with a nearby LOUD station or splatter, it is very harsh
to listen to. This may just be a fact of life, but am interested in any
suggestions to improve it.
Suddenly lost my NR ability in my K3. Just getting N/A regardless which
filters are in or if NB turned on/off.
Using latest F/W 02.57
Any hints, someone, please.
Len
SM7BIC
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You must be a
..
And the answer is TURN on AGC before starting to ask, now it is working ok.
73
all
SM7BIC
-Ursprungligt meddelande-
Fran: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Lennart Michaelsson
Skickat: den 27 oktober 2008 15:48
Till: elecraft@mailman.qth.net
Amne: [Elecraft] K3 and NR
All of these discussions seem to point out that there is need for operator
control and knowlege to properly operate the radio.
For some users, the sun may rise and set on AM, but others are using the radio
for moon bounce, 160 m CW contesting, transverter, etc.
And when a feature is
I vote for giving the operator control rather than giving the software control.
It is part of the adventure of the hobby to own a piece of gear that is
complex enough that it is a challenge to us to squeeze out the last ounce of
performance. I vote for having thousands of permutations and
Kenneth Waites wrote:
I vote for giving the operator control rather than giving the software
control. It is part of the adventure of the hobby to own a piece of gear
that is complex enough that it is a challenge to us to squeeze out the
last ounce of performance. I vote for having
Julian,
My cynicism is showing here, but I do believe that many people want all
the 'bells and whistles' even if they will never use them. The result
is that we end up with a radio or software that many complain about
'because it is too hard to use'. It is difficult to impossible for all
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