FW: [Elecraft K3] Volume Level with NR

[Chester Alderman]

I agree with Jack.

I just looked at two CW signals on 40m. One at 20dB over and one signal that
was not even moving my S mtr. In the case of the 20 over signal, the noise
decreased significantly but the signal on the P3 did not drop at all. The
weak signal appeared to drop in signal level, but the noised seemed to drop
much more. The last one is very hard to tell! But a signal at S-5, the noise
dropped but the signal level remained at S-5.

Tom - W4BQF

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of WILLIS COOKE
Sent: Monday, October 04, 2010 6:15 PM
To: W4GRJ; Dale Wiese; Elecraft Email
Subject: Re: [Elecraft] [Elecraft K3] Volume Level with NR

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 <[hidden email]>
To: Dale Wiese <[hidden email]>; Elecraft Email <[hidden email]>
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: [hidden email]
[mailto:[hidden email]] 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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