[Elecraft] [Elecraft K3] Volume Level with NR

riese-k3djc at juno.com riese-k3djc at juno.com
Mon Oct 4 21:50:14 EDT 2010 

how bout some gidelines for AGC settings

Bob K3DJC

 
On Mon, 04 Oct 2010 19:24:49 -0500 Sam Morgan <k5oai.sam at gmail.com>
writes:
> I think perhaps we should be including what settings
> are being used for not only the DSP settings,
> but also AGC SLP and AGC THR as well as AF anf RF settings
> all the above will make for different results when folks say,
> it's louder or not
> 
> using head phones would also make for a big difference
> in how high the volume needs to be
> 
> maybe not so much in the louder or not part
> but in the just HOW much louder it needs to be
> to maintain the level of volume heard prior to turning DR on
> 
> just to muddy the waters a bit, lol
> 
> GB & 73
> K5OAI
> Sam Morgan
> 
> On 10/4/2010 7:01 PM, JAMES ROGERS wrote:
> > Not throttled back here.
> >
> > Jim, W4ATK
> >
> > On Oct 4, 2010, at 6:20 PM, David Herring wrote:
> >
> >> General question to those participating in this thread,  when 
> you
> >> engage NR, are you running RF gain maxed out, or are you 
> adjusting
> >> RF gain back to the point where it just affects the S-meter?
> >>
> >> Sadly I'm off the air for a few days so I can't test myself, but 
> I'm
> >> interested to know if throttling the RF gain has any bearing on 
> the
> >> drop in volume.
> >>
> >> 73,
> >>
> >> Dave, AH6TD
> >>
> >> Sent from my iPhone
> >>
> >> On Oct 4, 2010, at 12:47 PM, Gary Gregory<garyvk4fd at gmail.com>  
> wrote:
> >>
> >>> Hmmm...this topic appears from time to time and in the early 
> days I
> >>> think it
> >>> was relevant. Since Lyle has has worked on the DSP and 
> introduced
> >>> F1-x  for
> >>> CW and 5-x up for SSB there has been a huge improvement.
> >>>
> >>> Perhaps the settings used by those experiencing a big drop in 
> audio
> >>> levels
> >>> are different to mine BUT I have just checked 7.055 listening to 
> an
> >>> Indonesian station close to the noise floor.
> >>>
> >>> The result is I hear a lot of band noise and a soft and 
> difficult to
> >>> understand SSB conversation, when I use NR (5-2) the noise drops
> >>> significantly and the voice is marginally softer but now
> >>> understandable. and
> >>> a QSO would be easy to do providing the other station would be 
> able
> >>> to copy
> >>> me.
> >>>
> >>> I am sure that Lyle will revisit the Algorithm and see if indeed 
> any
> >>> improvements can be made BUT for now I am quite satisfied with 
> the NR
> >>> functionality.
> >>>
> >>> Having said this, we all experience different band conditions 
> and
> >>> what works
> >>> for one person may not work for all of us.
> >>>
> >>> My 2 cents worth...keep the change
> >>>
> >>> 73's
> >>> Gary
> >>>
> >>>
> >>>
> >>> On Tue, Oct 5, 2010 at 8:15 AM, WILLIS COOKE<wrcooke at yahoo.com>
> >>> wrote:
> >>>
> >>>> That sure is not what I have observed.  My signals drop about 2 
> S
> >>>> units if
> >>>> they
> >>>> are strong.  If they are near the noise level they disappear.  
> I
> >>>> am running
> >>>> F
> >>>> 1-1.  It is worse if I run a higher NR level.
> >>>>
> >>>> Willis 'Cookie' Cooke
> >>>> K5EWJ
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> ________________________________
> >>>> From: W4GRJ<w4grj at satterfield.org>
> >>>> To: Dale Wiese<dwiese42 at mac.com>; Elecraft Email<
> >>>> elecraft at mailman.qth.net>
> >>>> Sent: Mon, October 4, 2010 4:54:21 PM
> >>>> Subject: Re: [Elecraft] [Elecraft K3] Volume Level with NR
> >>>>
> >>>> Dale,
> >>>>
> >>>> Just for reference, my experience with the K3 NR is 
> outstanding. I
> >>>> cannot
> >>>> notice any reduced volume on the tuned signal. The NR on my K3
> >>>> does a great
> >>>> job of whacking out the noise without effecting the signal 
> level.
> >>>>
> >>>> You may need to do some checking of settings and calibration, I 
> am
> >>>> sure
> >>>> there are folks here that can help you.
> >>>>
> >>>> Jack
> >>>> W4GRJ
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: elecraft-bounces at mailman.qth.net
> >>>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Dale 
> Wiese
> >>>> Sent: Monday, October 04, 2010 2:31 PM
> >>>> To: Elecraft Email
> >>>> Subject: Re: [Elecraft] Volume Level with NR
> >>>>
> >>>> Wayne,
> >>>>
> >>>> I am going to disagree - I think its a real issue, and an area 
> for
> >>>> K3
> >>>> improvement.  While I have not been to Jim's shack to hear what 
> he
> >>>> is
> >>>> hearing, it  sounds like what I have always observed, at least 
> for
> >>>> SSB
> >>>> reception.  Engaging the NR significantly reduces the overall
> >>>> audio level.
> >>>>
> >>>> When I engage the NR on my MkV or FT-847, the band noise drops
> >>>> away, but
> >>>> the
> >>>> perceived volume of the monitored voice stays about the same.  
> It
> >>>> is rare
> >>>> that I need to touch the volume control.  Yaesu NR is 
> reasonably
> >>>> effective
> >>>> for turning a marginal signal into something that can be 
> copied, and
> >>>> turning
> >>>> a strong signal with high band noise into something more 
> pleasant
> >>>> to listen
> >>>> to.
> >>>>
> >>>> On the K3, engaging the NR in SSB drops both the noise and the
> >>>> apparent
> >>>> voice level substantially, requiring that the volume control 
> be
> >>>> turned up
> >>>> [a
> >>>> lot]  to copy the voice.  But then the noise is also 
> increased.
> >>>> Frequently it feels like the NR has done little to no good, but 
> it
> >>>> is hard
> >>>> to tell.  Perhaps the ratio between the band noise and the 
> desired
> >>>> signal
> >>>> is
> >>>> improved, but overall I would say its not.  Or not very much.
> >>>>
> >>>> The NR difference on SSB between the K3 and the Yaesu products 
> I
> >>>> have used
> >>>> is large, and the K3 loses.  It is the _only_ K3 feature I 
> find
> >>>> which is
> >>>> sub-par, and only for SSB - NR for CW seems much more 
> effective.
> >>>>
> >>>> 73,
> >>>> Dale
> >>>> N9XD
> >>>>
> >>>>
> >>>> On Oct 4, 2010, at 9:13 AM, Wayne Burdick wrote:
> >>>>
> >>>>> Jim,
> >>>>>
> >>>>> Some drop in apparent volume level is typical with NR. Part of 
> the
> >>>>> drop is due to the removal of noise. Part of it may be a
> >>>>> psychoacoustic effect (sorry, I'm not an expert on this).
> >>>>>
> >>>>> You might also try setting F5-1. Settings from F5-x to F8-x 
> use a
> >>>>> different algorithm.
> >>>>>
> >>>>> 73,
> >>>>> Wayne
> >>>>> N6KR
> >>>>>
> >>>>>
> >>>>> On Oct 4, 2010, at 9:04 AM, Jim Harris wrote:
> >>>>>
> >>>>>>
> >>>>>> Hi,
> >>>>>>
> >>>>>> I've noticed recently that when I press NR the volume level 
> drops
> >>>>>> what could be called a considerable amount.  I normally use 
> NR
> >>>>>> setting of F-1-1 or -2.  More than that tends to almost mute 
> the
> >>>>>> receiver.  I find that the volume control needs to be 
> increased
> >>>>>> about 70 degrees or so to give the same loudness as before 
> the NR
> >>>>>> was pressed with the above settings.  I have to manually 
> change
> >>>>>> the
> >>>>>> volume every time I engage or disengage the NR.  I realize 
> that
> >>>>>> most
> >>>>>> likely there should be some decrease in loudness but this 
> seems to
> >>>>>> be excessive.
> >>>>>>
> >>>>>> Does anyone have any meaningful experience or recommendations 
> they
> >>>>>> can pass along.
> >>>>>>
> >>>>>> Thank you.
> >>>>>>
> >>>>>>
> >>>>>> Take Pride in the USA!
> >>>>>>
> >>>>>> 73,  Jim, W0EM
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>> 
> ______________________________________________________________
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> >>>>>>
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> >>>>>> donate.html
> >>>>>
> >>>>> 
> ______________________________________________________________
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> >>>
> >>>
> >>>
> >>> --
> >>> Gary
> >>> VK4FD - Motorhome Mobile
> >>> http://www.qsl.net/vk4fd/
> >>> K3 #679
> >>> For everything else there's Mastercard!!!
> >>> ______________________________________________________________
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> >>>
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> >> ______________________________________________________________
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> >>
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> 
 
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