that was it Bob and Wes, it was set to 001!
Thanks!
Conrad PA5Y
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: 22 September 2019 22:44
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 AGC off mutes audio?
Check the AF LIM settings
r 22, 2019 4:38 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 AGC off mutes audio?
Yes that was it Bob and Wes, it was set to 001!
Thanks!
Conrad PA5Y
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: 22 September 2019 2
Yes that was it Bob and Wes, it was set to 001!
Thanks!
Conrad PA5Y
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bob McGraw K4TAX
Sent: 22 September 2019 22:44
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 AGC off mutes audio?
Check the AF LIM
Check the AF LIM settings. {page 57 in the manual} Typical value is
NOR 030.
73
Bob, K4TAX
On 9/22/2019 2:42 PM, Conrad PA5Y wrote:
Hello I have a K3S with the latest firmware. I use it on EME in fact last night
was the first time. It works well but for EME I prefer to operate with the
Hi Conrad.
Here is the some situation.
I think in the K3 S-meter not in the AGC loop, have diff channel and
detector same as in the FT2000.
-- Original Message --
From: "Conrad PA5Y"
To: "elecraft@mailman.qth.net"
Sent: 22.09.2019 22:42:01
Subject: [Elecraft] K3
Check the setting of CONFIG:AF LIM.
Wes N7WS
On 9/22/2019 12:42 PM, Conrad PA5Y wrote:
Hello I have a K3S with the latest firmware. I use it on EME in fact last night
was the first time. It works well but for EME I prefer to operate with the AGC
off. If I do a long press on the AGC button
Hello I have a K3S with the latest firmware. I use it on EME in fact last night
was the first time. It works well but for EME I prefer to operate with the AGC
off. If I do a long press on the AGC button then AGC switches off but so does
the audio. I still see the S meter moving slightly which
So if I slowly turn down the gain on one of your "pro audio" amplifiers and the
gain slope changes but remains a straight line that's distortion?
On 3/7/2017 4:11 PM, Jim Brown wrote:
...
And I'll repeat my previous observation that a signal path with gain that
varies with time or with the
> AGC adjusts the receiver gain, compared to the audio bits, rather slowly
and DOES NOT change the "dynamic range."
Exactly. AGC changes the receiver's gain between two points in time, not
between two signals arriving at the same time.
I believe changing the AGC settings does improve the "mush"
Wes and Ed,
It's important to realize that in the K3 and later Elecraft rigs, all of
this is happening in the digital domain. One thing we learned about DSP
in pro audio is that dynamics processing burns a LOT processor cycles.
DSP SIMULATES the behavior of analog circuitry, but depending on
AGC adjusts the receiver gain, compared to the audio bits, rather slowly and
DOES NOT change the "dynamic range."
If you're listening to a signal and it's too loud for your ears and you turn the
audio gain down 10 dB, does that change the amplitude ratio of any signal you're
listening to?
: [Elecraft] [K3] AGC White Paper
What I get using a relatively flat AGC is automation of my
riding the RF gain control. I don't see how this kind of
automation affects decoder performance. It should help
performance as the decoder has a nearly constant level signal to
work with. Please explain
-
From: Bill Frantz [mailto:fra...@pwpconsult.com]
Sent: 07 March, 2017 13:05
To: e...@w0yk.com
Cc: elecraft@mailman.qth.net
Subject: RE: [Elecraft] [K3] AGC White Paper
What I get using a relatively flat AGC is automation of my
riding the RF gain control. I don't see how this kind of
automation
What I get using a relatively flat AGC is automation of my
riding the RF gain control. I don't see how this kind of
automation affects decoder performance. It should help
performance as the decoder has a nearly constant level signal to
work with. Please explain.
Thanks - Bill AE6JV
On
...@mailman.qth.net] On Behalf Of Bill
Frantz
Sent: 05 March, 2017 23:17
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [K3] AGC White Paper
Thanks Al. A very useful paper.
Now to use SLP=15 for digital, where I want the AtoD to not have
to deal with a big range, while using something with more
Brian,
The effect of reducing the RF Gain is *about* the same as increasing the
AGC threshold. Not quite, but that is a simplistic way of looking at it.
73,
Don W3FPR
On 3/6/2017 6:13 PM, Brian Hunt wrote:
I noticed that your AGC curves were made with the RF gain full max. I rarely
Jim,
I am competitive mainly when I go on expeditions and operate from semi
rare countries like 8Q7 or 6V7 or CT3. Finding clear run frequency from
there is not a problem. On the other hand carrying extra box and using
big screen there is a problem. Therefore P3 for me is not justifiable
Is there a way to simulate different agc settings by generating sine wave
CW signals and varying the relevant parameters?
I'd like to write some code to allow for straightforward observation of the
phenomena we are discussing and various assumptions about the input signals
to be tested.
It
I noticed that your AGC curves were made with the RF gain full max. I rarely
operate that way. I usually turn the RF gain down to where the noise peaks are
barely kicking the S-meter. By doing so, is it fair to say I'm moving the curve
to the right? I.e, a higher signal amplitude before the
On 3/6/2017 2:29 PM, Don Wilhelm wrote:
Actually it responds to the integral of all the signals in the
passband, but if there is a single stronger one it will predominate.
In truth, depending on the AGC *attack time constant* the AGC system
responds to the *instantaneous peak voltage* of all
ctor
Subject: [Elecraft] [K3] AGC White Paper
I spent a little bit of time this weekend and put together yet another K3 AGC (YAKA)
"white paper" to put some measurements and discussion of the results down in
the hope that others may benefit. Maybe it'll help folks understand AGC better
I think about it as follows:
THR: The signal level at which AGC action begins. Lower number = lower
signal level where AGC begins.
SLP: Wayne is an EE and I'll bet he views SLP as the degree of gain
compression in the AGC system. Thus, higher SLP values mean a higher
amount of
On Mon,3/6/2017 11:42 AM, Igor Sokolov wrote:
This is really a great idea wich is if ever implemented would make me
finally purchase P3.
Igor,
While it's a nice idea, it may or may not be possible to implement. BUT
-- we're both pretty active contesters, and I wouldn't dream of working
a
On Mon,3/6/2017 11:29 AM, Don Wilhelm wrote:
This is often referred to as "AGC Pumping".
Yes, BUT -- there is distortion associated with AGC action, and that
distortion is what is perceived as "mush."
[Remember that the fundamental definition of distortion is "anything in
the output that's
Eric,
Thank you. This is really a great idea wich is if ever implemented would
make me finally purchase P3.
I am sure Elecraft is listening.
73, Igor UA9CDC
06.03.2017 12:29, Erik Basilier пишет:
Al, your paper looks very helpful for the situation when the concepts need
to be studied. After
Wes is correct. Let me say it in a slightly different way.
The AGC simply reduces the gain of the receiver - and it will respond
mainly to the strongest signal in the passband. Actually it responds to
the integral of all the signals in the passband, but if there is a
single stronger one it
hold. exhale.
again.
Al W6LX
From: Wes Stewart <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Sent: Monday, March 6, 2017 10:19 AM
Subject: Re: [Elecraft] [K3] AGC White Paper
In Al's very nicely done paper he has this par
In Al's very nicely done paper he has this paragraph:
"The purpose of Automatic Gain Control (AGC) is to reduce the range of the
signals seen by the sensitive stages in the receiver. The AGC stage is
designed to vary its gain depending on the input signal; stronger signals
get less
Very nice report - thanks!
-
Sverre, LA3ZA
K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications:
http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html
--
View this message in context:
Very nice Al Thanks.
73,
Fred KE7X
From: Elecraft <elecraft-boun...@mailman.qth.net> on behalf of Al Lorona
<alor...@sbcglobal.net>
Sent: Sunday, March 5, 2017 10:50 PM
To: Elecraft Reflector
Subject: [Elecraft] [K3] AGC White Paper
I spent
Chuck,
If you look at the chart of CONFIG menu listings, all menu items that
have [SUB] indicated are separate settings for the main and the subRX.
There is no such indicator for the AGC parameters, indicating that those
menu entries apply to both the main and the subRX.
The AGC parameters
I've been using my trusty K3 for years with a single receiver, and
frequently experiment with AGC THR and SLP settings for best DX
reception. As I seldom am in a position to "Run" stations, I have not
been bothered by what has been referred to as "pileup mush," except
perhaps when I switch
Al, your paper looks very helpful for the situation when the concepts need
to be studied. After one has a reasonable understanding of the concepts, the
stituation that comes up now and then is wanting to change some of the AGC
parameters in the K3. I don't know about others, but I tend to forget
Thanks Al. A very useful paper.
Now to use SLP=15 for digital, where I want the AtoD to not have
to deal with a big range, while using something with more
dynamic range for voice/CW.
73 Bill AE6JV
On 3/6/17 at 9:50 PM, alor...@sbcglobal.net (Al Lorona) wrote:
I spent a little bit of time
I spent a little bit of time this weekend and put together yet another K3 AGC
(YAKA) "white paper" to put some measurements and discussion of the results
down in the hope that others may benefit. Maybe it'll help folks understand AGC
better by demystifying some of the K3 idiosyncrasies. I hope
Hi All,
It's been a while since the K3 AGC operation was changed (about 4.51) so it
might be fun to see what everybody has settled down on using. It you want to
reply here or to me off line, I'll compile the result and post them.
My numbers are:
AF LIM 20 (probably a little high)
THR 12 (about
...@mailman.qth.net [mailto:elecraft-
boun...@mailman.qth.net] On Behalf Of Cady, Fred
Sent: 04 December 2013 21:28
To: 'elecraft@mailman.qth.net'
Subject: [Elecraft] K3 AGC values survey
Hi All,
It's been a while since the K3 AGC operation was changed (about 4.51)
so it
might be fun to see what everybody has
Plus I suspect an individuals hearing also effects what settings are used?
Still, Fred has no doubtgot a use for theinfo but for me, I am in the US
till February so no K3 here to make some notes.
Brr...and I am freezing. ?
Gary
On 05/12/2013 7:28 AM, Cady, Fred fc...@ece.montana.edu
@mailman.qth.net
Subject: RE: [Elecraft] K3 AGC values survey
The K3 can become many different rigs for different people. The AGC
characteristics are the most configurable of all, so the survey won't
be
meaningful without one more key question:
* For what kind of operating?
73 from Ian GM3SEK
My numbers are:
AF LIM 030
THR 010
SLP 008
DCY Nor
HLD 0.00
PLS NOR
AGC-F 120
AGC-S 020
The only variables I have experimented with are THR and SLP. I mostly
operate phone with some CW and I really don't have any objections to the
way my K3 works.
73, de Nate
--
The optimist proclaims that
On Thu, 05 Dec 2013 07:28:19 +1000, Cady, Fred fc...@ece.montana.edu
wrote:
Whatever the defaults are, that is what I am using.
I have had no need nor want to change them. (And ditto for most other
settings in my K3, I found that it works for me 'right out of the box')
73 de
--
Jeff Cochrane
When I got my K3 I was a relatively new ham. I was delighted
that the default settings were good usable values. Having a good
starting point was valuable in learning how to use radios and
the K3 in particular. Kudos to Elecraft.
Cheers - Bill, AE6JV
On 12/5/13 at 5:45 PM, jeffvk...@gmail.com
Would anyone be willing to share their preferred AGC settings for receiving
weak cw signals? Specifically, I'm wanting to fine tune my settings for
listening to at the noise 2 meter and 6 meter beacons.
Thanks!ChadN0YK
To: chadwasin...@outlook.com
Subject: Re: [Elecraft] K3 AGC settings for weak signal CW
Chad,
AGC doesn't kick in till way above weak signal on any reasonable values
of THR and slope. Of course a mast mounted preamp on 2M would help a
lot. One can get by with a back of the rig preamp for 6M
Chad,
You will be better off setting the AGC parameters to match your
operating needs.
Go to my website www.w3fpr.com and read the article on Noisy K3 to
guilde you.
The menu parameters have been expanded since that article was written,
but the principles are the same, but they now cover a
G'day
Prior to the CQ WW CW contest, I did some experimentation with the K3 AGC
settings (rev 4.51 firmware). I started with the AGC SLP set to 0 and the
AGC THR to 8. After some problems with the AGC action on stronger signals
(S9 to S9 plus), I increased the SLP to 2 and found that there
Hello All,
I own a K3, am running MCU 4.51, and operate virtually 100% cw. With
respect to MCU 4.51, I note that the software site says,
AGC IMPROVEMENTS: AGC threshold (CONFIG:AGC THR) can now be set much
higher, and the AGC has better (more monotonic) response curves. Greatly
improves
-td7556676.html#a7556700
Dave Hachadorian, K6LL
Yuma, Arizona
-Original Message-
From: Richard Lee
Sent: Sunday, October 21, 2012 2:07 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 AGC settings w/ MCU 4.51
Hello All,
I own a K3, am running MCU 4.51, and operate virtually 100
With firmware 4.51 what seems to be the consensus for contesting, both SSB
and CW for AGC Slope and Hold settings?
Still playing with settings. We get strong US/EU pileups and a mixture of
strong and weak pileups from AS. Presently using SLP=1, THR=9.
Anything special about any of the other AGC
Hi all,
Like many, I haven't been able to find a decent pileup the last few days
to test the version 4.51 AGC. I don't use the NR or notch function
either so have concentrated on making some measurements using the XG3 as
a signal generator.
The figure on
Cady, Fred wrote:
Observations:
As THR increases, the effect of SLP decreases.Changing SLP
behavior as a function of THR has been done to protect the user's
ears.
Correct.
Wayne
N6KR
__
Elecraft mailing list
Home:
Hi All:
Just wondering if this was released.. If so, I cannot find it.
de W4CCS
On 5/8/2012 10:59 AM, Wayne Burdick wrote:
Just a reminder: There will be further improved K3 firmware available
later today. It will allow NR and autonotch at all settings, and will
fix the audio-dropout
Short version: It's still in the kitchen.
Long version:
This is still in pre-beta, being evaluated by a goodly number of hams
who volunteered to test it before all the cooties were cleaned out.
Some number of issues have been ferreted out, a couple serious, and
there were some deliberate
The last word from Aptos was that they were still testing the new
changes. I am sure they will release it to beta when it is ready.
--
Mike W0MU
W0MU-1 CC Cluster w0mu.net
__
Elecraft mailing list
Home:
No thanks Guy. I'll just wait for the brave ones to work out all the
cooties..
Thanks
W4CCS
On 5/10/2012 11:32 AM, Guy Olinger K2AV wrote:
Short version: It's still in the kitchen.
Long version:
This is still in pre-beta, being evaluated by a goodly number of hams
who volunteered to
@mailman.qth.net
Sent: Tuesday, May 8, 2012 10:59:37 AM
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
Just a reminder: There will be further improved K3 firmware available
later today. It will allow NR and autonotch at all settings, and will
fix the audio-dropout problem
...@elecraft.com
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Tuesday, May 8, 2012 10:59:37 AM
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
Just a reminder: There will be further improved K3 firmware available
later today. It will allow NR and autonotch at all
Bill,
What!
You mean you don't want them to pass it through three or four levels of
management, design, Gant chart creation, quality control and documentation
before releasing it to the developers!
What are you? A bloated corporation hater?
Remember! We owe it to the stockholders to appear
Compared to the many others that have weighed in already, I am a few days
late taking a look at the new firmware. It may have been worth the wait.
In a nutshell, the new 4.50/2.74 works extremely well. I've been waiting
for my K3 to really be able to perform in deep pileups, like I had
Hi everybody
In evaluating the new firmware I use 2xK3, #791 #5752
*
*
*Initial conditions*:
Rx Eq flat on booths rigs
BW 700Hz, no CW roofing only 2.7KHz (5poles)
AGC DCY –Soft
AGC SLP -003
AGC FST -100
K3 #791 THR=14-17 (usually 14)
K3 #5752 THR=5-8 (usually 7)
Test:
single
Just a reminder: There will be further improved K3 firmware available
later today. It will allow NR and autonotch at all settings, and will
fix the audio-dropout problem some have reported.
Wayne
N6KR
__
Elecraft mailing list
Home:
: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
Just a reminder: There will be further improved K3 firmware available
later today. It will allow NR and autonotch at all settings, and will
fix the audio-dropout problem some have reported.
Wayne
N6KR
To my ears, this AGC change is a MAJOR improvement! It didn't
take any extensive testing to reach that conclusion. The
difference is immediately obvious.
As mentioned previously, with low values of slope and high values
of threshold, loud signals blank out with the current firmware
release,
On 5/7/2012 1:56 PM, Dave Hachadorian wrote:
To my ears, this AGC change is a MAJOR improvement! It didn't take
any extensive testing to reach that conclusion. The difference is
immediately obvious.
That's very good news. Possibly a beta release this week or maybe next,
I hope.
73,
Fred
On Mon, May 7, 2012 at 3:56 PM, Dave Hachadorian k...@arrl.net wrote:
Thanks for working on this issue!
=
This is a real-life example of a terrific attitude toward customer
satisfaction. When this issue was first raised, the company could have been
defensive and simply asserted that
: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tony Estep
Sent: 07 May 2012 22:42
To: Elecraft
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
On Mon, May 7, 2012 at 3:56 PM, Dave Hachadorian k...@arrl.net wrote:
Thanks for working
Now if we could convince ANY vehicle manufacturer to have the same attitude,
designers that are also mechanics (without the need for an MSEE)... Maybe
we'd have a chance to work under the hood again like we can with Elecraft.
Rick wa6nhc :o)
-Original Message-
From: Doug Turnbull
It
I cannot seem to locate where to download this; I can only see 4.48, no
Beta...
Clues for the clueless?
Thanks and 73 de Dave, W5SV
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
I think Wayne's post indicated it would be released as a beta in the
next week or so once the field test reports were in and they were
satisfied with it. It sure sounds like a really good job on the AGC, I
guess patience is in order ... I know, hard for this list and these
products. :-)
73,
Sent: Monday, May 07, 2012 5:00 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
I cannot seem to locate where to download this; I can only see 4.48, no
Beta...
Clues for the clueless?
Thanks and 73 de Dave, W5SV
I just talked to Lyle. Looks like by tomorrow we'll have a version of
DSP code that allows NR and autonotch to be used at all threshold
settings, and fixes the high-signal issue some had reported.
I'll send it out to everyone who got the last test version.
Wayne
N6KR
Fred Jensen wrote:
I
We in the IT business call it Alpha and you don't send it to anybody
who can't figure out how to fix a broken system. In this case it's
pretty easy, reset the radio and reload a backed up FW and config.
I would call what Wayne is doing this time Beta and when it is released
on the website for
Great!
I have sent the SW to about 5 people.
Mike W0MU
W0MU-1 CC Cluster w0mu.net
On 5/7/2012 5:59 PM, Wayne Burdick wrote:
I just talked to Lyle. Looks like by tomorrow we'll have a version of
DSP code that allows NR and autonotch to be used at all threshold
settings, and fixes the
As a retired software developer, what amazes me is the way Wayne
and company are performing their beta test. No NDA. It looks
like almost anyone can sign up. Problems and future intentions
are discussed in a public forum. I am blown away that a company
would act this way. It is very
-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David F. Reed
Sent: Monday, May 07, 2012 5:00 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
I cannot seem to locate where to download this; I can only see 4.48
Bill,
True, true -- but the situation with the KX3 is different than what has
transpired with previous products.
Previously, the conversations of the Field Testers have been on a
private forum. While that is still true with the KX3, there is a lot
more information that is in the open. My
Making a great rig even better. Totally stoked to play with the radio with the
new firmware.
To my ears, this AGC change is a MAJOR improvement! It didn't
take any extensive testing to reach that conclusion. The
difference is immediately obvious.
As mentioned previously, with low
Sorry, I was responding to the wrong post.
While the content is valid for what it is, it is in response to a post
on the KX3 Yahoo Group, and has nothing to do with the K3 AGC.
73,
Don W3FPR
On 5/7/2012 10:53 PM, Don Wilhelm wrote:
Bill,
True, true -- but the situation with the KX3 is
On May 7, 2012, at 10:42 PM, Guy Olinger K2AV wrote:
Beta Beta.
Meaning, I presume, it's a beta Beta than the first Beta.
Well, I guess we beta that to death
Bud, W2RU
__
Elecraft mailing list
Home:
Software developers call it alpha. Greek alphabet ya know -- alpha,
beta, gamma... I guess gamma must be the production release.
David K0LUM
At 10:42 PM -0400 5/7/12, Guy Olinger K2AV wrote:
Beta Beta.
On Mon, May 7, 2012 at 7:50 PM, Cady, Fred fc...@ece.montana.edu wrote:
Hi Dave,
It's
*Without the radiation I hope..:-)
gary
*
On 8 May 2012 13:18, David Christ radio...@mchsi.com wrote:
Software developers call it alpha. Greek alphabet ya know -- alpha,
beta, gamma... I guess gamma must be the production release.
David K0LUM
At 10:42 PM -0400 5/7/12, Guy Olinger K2AV
Not to worry. Your comments are a fine description of why in
exchange for openness on the part of the vendor, the customers
(we) need to exhibit patients when the inevitable things go
wrong and things take longer than everyone hoped.
Cheers - Bill, AE6JV
On 5/7/12 at 19:58,
, and Operation
www.ke7x.com
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David F. Reed
Sent: Monday, May 07, 2012 5:00 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 AGC improvements (MCU rev 4.50 / DSP 2.74)
I cannot
The latest version of the K3 firmware (4.48) has eased that problem for me
and HRD. The problem has been on the todo list for HRD for a long time,
hopefully they will fix it before they switch to charging for HRD.
73 John K3TN
--
View this message in context:
I have seen this topic posted but I guess I missed the corrective measure(s).
My K3 has the latest update and the AGC still just turns off for no reason,
even when it is just sitting there in receive mode. Yes we are using HRD and
the version we have is 5.11 build 3209.
Any additional feedback
Bill,
When it comes out in the next couple of days, download the 5.2x version of
HRD. It should resolve this issue. If not, the new owners of HRD plan to
have it corrected in v6.0, which comes out the week of Dayton.
--Ian
Ian Kahn, KM4IK
Roswell, GA EM74ua
km4ik@gmail.com
K3 #281, P3
Bill
If you install Lpbridge which is a port sharing utility which sits between
the K3 and up to 5 applications wanting to communicate with the radio, then
the problem will disappear! It looks daunting to set up, but in reality
it's easy. Problem solved!
73 Stephen G4SJP
On 30 April 2012
I know this has been discussed, but I didn't see the following mentioned.
I installed the latest HRD Beta V5b2893. The AGC still switches off at times
on my K3. I noticed in the Options, Info CAT support, for K-3 radio, the
AGC-off command for on/off is set to the same value. Logically, it
I ran into a few problems when I tried to send the wav files as email
attachments; turns out they were all too big unless cut up into 5
minute slices. Instead, I posted them to my website at
https://sites.google.com/site/w1uehamradio/
where they are available for download. I cut the files into
I performed the AGC mod as suggested by Wayne N6KR in his K3 Hardware
AGC Experiment shows promise
posting on Dec 4. The mod was to add an additional 1 or 2 uf of
capacitance onto C238 on the Main Receiver
PCB. I obtained my own SMT caps from Mouser, and for 76cents and 30
minutes of time the
Guy,
The K3 NoiseBlanker does a real good job here. Give it a moderate
setting and it will work fine.
73,
Arie PA3A
Op 16-12-2011 6:04, Guy Olinger K2AV schreef:
Yeah, but then don't key clicks punch up your slow AGC?73, Guy.
On Thu, Dec 15, 2011 at 1:53 PM, Ralph
Dave:
My next experiment will be to have an N1MM logging program
macro available to send RF Gain command RG090 if a loud
pileup shows up. RF Gain will be returned to 200 by
appending
the RG200 command to the thank you message. This should
be the ultimate in riding the RF gain control.
Dennis,
Thanks for this try-out! I'm looking forward to hear the results.
Some suggestions:
- switch the PLS off. My experience in CW contests is that the PLS
function will treat fast strong CW signals as pulses and will bypass the
slow AGC for the first few dots of a signal.
- maybe set the
Slope 0 flattens the agc response. Have a look at some curves on The AGC Story
on ke7x.com
-Original Message-
From: elecraft-boun...@mailman.qth.net on behalf of Arie Kleingeld PA3A
Sent: Thu 12/15/2011 3:08 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 AGC Mod Test
Dennis I'd consider the following minor tweaks to your AGC settings:
HLD 0.20
AGS-S 040
Most importantly, set your RF Gain back so that the S-meters rest above the
residual noise floor (including clicks, phase noise, etc). Once RF Gain is
set, then adjust AF Gain to suit your ears/headphones.
Fred,
Maybe I did not express it right:
I want some more activity from the AGC means for me: audio response
more flat with different signal levels. SLP 15 is most flat audio level
in this case.
73,
Arie PA3A
Op 15-12-2011 15:17, Cady, Fred schreef:
Slope 0 flattens the agc response. Have a
Yuma, AZ
-Original Message-
From: Dennis
Sent: Wednesday, December 14, 2011 2:53 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 AGC Mod Test This Weekend
This weekend I will be participating in the Stew Perry 160M
contest, as
will many of you.
For the contest, I've arranged to do
- switch the PLS off. My experience in CW contests is that the
PLS function will treat fast strong CW signals as pulses
and will bypass the slow AGC for the first few dots of a signal.
AHA! Tnx, Arie.
I have noticed this many times, and was unable to determine what caused it.
Ralph, VE7XF
Yeah, but then don't key clicks punch up your slow AGC?73, Guy.
On Thu, Dec 15, 2011 at 1:53 PM, Ralph Parker ve...@dccnet.com wrote:
- switch the PLS off. My experience in CW contests is that the
PLS function will treat fast strong CW signals as pulses
and will bypass the slow AGC for
This weekend I will be participating in the Stew Perry 160M contest, as
will many of you.
For the contest, I've arranged to do some testing of the IMD Mod as put
forth by N6KR in
a recent email. I will have two K3s available, one with the IMD mod
(2uf in parallel with the
.1uf already on the
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