Date   

locked Re: WSJTX bug with K3 #WSJTX_config

Michael Black
 

Yes and no.Some commands are the same but I can tell you getting the K3/K4 to work correctly on data modes was painful.
It is a Kenwood super/subset so shows up as a Kenwood choice as it does use some of Hamlib's kenwood functions.
Mike W9MDB

On Monday, January 3, 2022, 04:13:18 PM CST, W1EL Eric <elowell@...> wrote:

Don't Elecraft radios use the Kenwood command set?

-----Original Message-----
From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of alanbh@...
Sent: Monday, January 03, 2022 14:44
To: main@WSJTX.groups.io
Subject: [WSJTX] WSJTX bug with K3 #WSJTX_config

All versions past Ver 2.2.2 create a wsjtx_syslog.log under user/(computer name)/AppData/Local/ WSJT -X- (your call sign).  The syslog indicates WSJTX thinks the K3 is some type of Kenwood radio. This is happening on 4 different K3's on 4 separate computers all running Win 10 Pro all up to date.
Computers ar HP, Dell and generic mother boards.  Two are direct com port to com port from computer to K3.  Two other systems are USB, through USB converters to com port, to K3.  K3 and computer ports set to correct parameters. 

Each start of WSJTX adds the same additional 17 lines of errors attempting to communicate with the K3 continually adding lines to the wsjtx_syslog.log.  The WSJTX will eventually load and run.  Version 2.4.x and all versions or 2.5.x have this issue. 

Found bug while searching for another issue.

alan WA3EKL


locked Re: WSJTX bug with K3 #WSJTX_config

W1EL Eric
 

Don't Elecraft radios use the Kenwood command set?

-----Original Message-----
From: main@WSJTX.groups.io <main@WSJTX.groups.io> On Behalf Of alanbh@...
Sent: Monday, January 03, 2022 14:44
To: main@WSJTX.groups.io
Subject: [WSJTX] WSJTX bug with K3 #WSJTX_config

All versions past Ver 2.2.2 create a wsjtx_syslog.log under user/(computer name)/AppData/Local/ WSJT -X- (your call sign). The syslog indicates WSJTX thinks the K3 is some type of Kenwood radio. This is happening on 4 different K3's on 4 separate computers all running Win 10 Pro all up to date.
Computers ar HP, Dell and generic mother boards. Two are direct com port to com port from computer to K3. Two other systems are USB, through USB converters to com port, to K3. K3 and computer ports set to correct parameters.

Each start of WSJTX adds the same additional 17 lines of errors attempting to communicate with the K3 continually adding lines to the wsjtx_syslog.log. The WSJTX will eventually load and run. Version 2.4.x and all versions or 2.5.x have this issue.

Found bug while searching for another issue.

alan WA3EKL


locked Re: Update affect on multiple instances #install #Windows10

Michael Black
 

Try install WSJT-X 2.5.4 in a separate directory (which it should do by default IMHO anyways) and run just one copy to see if it works.
You don't say how far behind you are but it's usually painless to upgrade.
Mike W9MDB

On Monday, January 3, 2022, 03:28:59 PM CST, Richard Lawn <rjlawn@...> wrote:

I'd like to update WSJT-X as I'm a bit behind but I run several instances of WSJT-X and wonder how an update affects them. Will I have to reconstruct the updates or will they autimatically reference the newest version?

73 HNY
--
Rick, W2JAZ


locked Update affect on multiple instances #install #Windows10

Richard Lawn
 

I'd like to update WSJT-X as I'm a bit behind but I run several instances of WSJT-X and wonder how an update affects them. Will I have to reconstruct the updates or will they autimatically reference the newest version?

73 HNY
--
Rick, W2JAZ


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Rick McNamara
 

It may be that Radio suppliers could not get the majority of users to
understand fine tuning the way you know how to do it, so the supplied
advice became to have the user shut it off.

On Mon, Jan 3, 2022 at 7:18 AM Steve Kavanagh via groups.io <sjkavanagh1=
yahoo.ca@groups.io> wrote:

There seems to be "received wisdom" that for non-Elecraft radios one must
operate WSJT-X modes with no ALC action. Having recently acquired a new
Yaesu radio, I found a variety of videos and reflector postings instructing
that this is the way to operate my radio on FT8, etc. Yet, my own
experimentation has shown (at least to my initial satisfaction) that ALC
action in itself does not appear to cause any significant degradation of
the signal quality, so long as the various audio levels and gains are
adjusted correctly.

I am just wondering how this got started. Are there rigs with ALC action
that is so fast as to cause significant audio distortion, other than maybe
very briefly at the start of transmission? Is it still true for modern
Yaesu's and I'm missing something, perhaps of a transient or dynamic nature?

73,
Steve VE3SMA





--
*WS7PB*
*Who is John Galt?*


locked WSJTX bug with K3 #WSJTX_config

alanbh@...
 

All versions past Ver 2.2.2 create a wsjtx_syslog.log under user/(computer name)/AppData/Local/ WSJT -X- (your call sign). The syslog indicates WSJTX thinks the K3 is some type of Kenwood radio. This is happening on 4 different K3's on 4 separate computers all running Win 10 Pro all up to date.
Computers ar HP, Dell and generic mother boards. Two are direct com port to com port from computer to K3. Two other systems are USB, through USB converters to com port, to K3. K3 and computer ports set to correct parameters.

Each start of WSJTX adds the same additional 17 lines of errors attempting to communicate with the K3 continually adding lines to the wsjtx_syslog.log. The WSJTX will eventually load and run. Version 2.4.x and all versions or 2.5.x have this issue.

Found bug while searching for another issue.

alan WA3EKL


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

SteveO
 

I have FT-891 and FT-991a radios. Not sure the "proper" way to run FT8, but Yaesu / WSJT-X manuals basically recommend adjusting for minimal ALC.

Because the FT-891 can only show one meter at a time on the front panel and that I was writing my own CAT control program, I added the ability to monitor SWR, Power Out, ALC and Idd meters from my application.

Interestingly, you do not need to see all of the meters however seeing them confirmed what I suspected/observed from before.

Example:
* Set the RF output to say 20 Watts
* Send a WSPR or FT8 call and observe power out.
- if it is less than 20 Watts, then adjust WSJT-X power setting upwards until the radio shows 20W (or maxes out)
- if it is 20 watts, then adjust WSJT-X power setting downwards until the radio drops below 20W and then push up a little bit to keep the power out at 20W

This is how I did it before I could see all meters at once. Turns out, even though you are seeing all of the meters, that method is what you ultimately end up doing to ensure you are outputting the expected power out and keeping ALC within the radio's recommendations.

Best regards,
Steve O de KC5NK


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Roger
 

There's also Bill's instructions for setting up the ALC levels here:-
https://wsjtx.groups.io/g/main/topic/setting_windows_wsjt_x_tx/75435187?p=,,,20,0,0,0::recentpostdate/sticky,,,20,2,0,75435187,previd=9223372036854775807,nextid=1641063108371347942&previd=9223372036854775807&nextid=1641063108371347942

73
Roger
GW4HZA


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Michael Black
 

That sounds correct for the 7300 -- which, by the way, is just about impossible to overdrive though the USB connection.We tested turning up the audio gain to max and still didn't see harmonics.
Mike W9MDB

On Monday, January 3, 2022, 01:02:08 PM CST, Philip Rose via groups.io <gm3zza@...> wrote:

Ys Michael,

That is basically how I sorted out the TX Audio pathway. Upped the AF audio until the RF ceased to increase and backed off a bit. The IC-7300 ALC meter was just shy of the  middle mark.

73 Phil GM3ZZA

Sent from Mail for Windows

From: Michael Black via groups.io
Sent: 03 January 2022 18:05
To: main@wsjtx.groups.io; main@WSJTX.groups.io
Subject: Re: [WSJTX] ALC Levels on non-Elecraft Radios - History? #transmit

We aren't talking about the amplifier linearity -- we're talking about the rig's power level being linear with the input audio data.  That's how you ensure you aren't into the ALC compression.It all depends on how the engineers design their ALC circuit.
So this for example going to the rig in digital format over a USB cable....skip the digital part if you're using an audio device like SignaLink or RigBlaster.Not that voltage here is a representation of -1 to 1V and is arbitrary at this point but typical values used for digital audio levels.Note that a command situation for over driving is people feeding MIC inputs with Line or Speaker level voltages.  MIC's operating at 100 millivolt levels and below which is far below the line levels of 1V and speaker levels of 10V or more.
32767 = 1V  (yes -- it's not 32768 -- 16-bit audio range is -32768 to 32767 or 0x1000 to 0x7FFF16384 = 0.5V = -3dB8192 = 0.25V = -6dB4096 = 0.125V = -9dB
Mike W9MDB




    On Monday, January 3, 2022, 11:51:16 AM CST, Steve Kavanagh via groups.io <sjkavanagh1@...> wrote: 

Thanks for all the input.  But I am afraid I don't really follow....so keep it coming, please. 

In most WSJT-X modes the amplitude is constant, so there is absolutely no need for RF amplification to be linear (maybe linear will help in MSK144 to some degree, in practice, if not in simple theory). A Class C or D amp will work just as well as a linear one, with the exception perhaps of some "key clicks" at the beginning and end of each transmission.  No intermod is generated by a non-linear amp when the signal is a single frequency at a time, like FT8, for example

But the audio amplification definitely has to be very linear to avoid creating audio harmonics.

If ALC works instantaneously - in other words it directly clips the audio, with no time constants involved, then it will generate audio harmonics.  If it works more slowly (like AGC in a receiver) then it might generate some distortion due to a fast attack time (perhaps for a few milliseconds at the beginning of a transmission), but then it ought to settle down to a reduced value of linear audio amplification.  I thought ALC was normally the latter - fast attack, slow decay.  Am I wrong?

Yes, Alan (G4ZFQ), I suppose if you are trying to set milliwatt transmit powers from a rig that will normally only go down to 5 watts, say, it would be useful to operate with no ALC so the output is proportional to the input in every way.

73,
Steve VE3SMA


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

 

Ys Michael,

That is basically how I sorted out the TX Audio pathway. Upped the AF audio until the RF ceased to increase and backed off a bit. The IC-7300 ALC meter was just shy of the middle mark.

73 Phil GM3ZZA

Sent from Mail for Windows

From: Michael Black via groups.io
Sent: 03 January 2022 18:05
To: main@wsjtx.groups.io; main@WSJTX.groups.io
Subject: Re: [WSJTX] ALC Levels on non-Elecraft Radios - History? #transmit

We aren't talking about the amplifier linearity -- we're talking about the rig's power level being linear with the input audio data.  That's how you ensure you aren't into the ALC compression.It all depends on how the engineers design their ALC circuit.
So this for example going to the rig in digital format over a USB cable....skip the digital part if you're using an audio device like SignaLink or RigBlaster.Not that voltage here is a representation of -1 to 1V and is arbitrary at this point but typical values used for digital audio levels.Note that a command situation for over driving is people feeding MIC inputs with Line or Speaker level voltages.  MIC's operating at 100 millivolt levels and below which is far below the line levels of 1V and speaker levels of 10V or more.
32767 = 1V  (yes -- it's not 32768 -- 16-bit audio range is -32768 to 32767 or 0x1000 to 0x7FFF16384 = 0.5V = -3dB8192 = 0.25V = -6dB4096 = 0.125V = -9dB
Mike W9MDB




On Monday, January 3, 2022, 11:51:16 AM CST, Steve Kavanagh via groups.io <sjkavanagh1@...> wrote:

Thanks for all the input.  But I am afraid I don't really follow....so keep it coming, please. 

In most WSJT-X modes the amplitude is constant, so there is absolutely no need for RF amplification to be linear (maybe linear will help in MSK144 to some degree, in practice, if not in simple theory). A Class C or D amp will work just as well as a linear one, with the exception perhaps of some "key clicks" at the beginning and end of each transmission.  No intermod is generated by a non-linear amp when the signal is a single frequency at a time, like FT8, for example

But the audio amplification definitely has to be very linear to avoid creating audio harmonics.

If ALC works instantaneously - in other words it directly clips the audio, with no time constants involved, then it will generate audio harmonics.  If it works more slowly (like AGC in a receiver) then it might generate some distortion due to a fast attack time (perhaps for a few milliseconds at the beginning of a transmission), but then it ought to settle down to a reduced value of linear audio amplification.  I thought ALC was normally the latter - fast attack, slow decay.  Am I wrong?

Yes, Alan (G4ZFQ), I suppose if you are trying to set milliwatt transmit powers from a rig that will normally only go down to 5 watts, say, it would be useful to operate with no ALC so the output is proportional to the input in every way.

73,
Steve VE3SMA


locked Unable to send a datagram UDP server 127.0.0.1:2237 #networking #linux

cpiggott@...
 

I want to report that the "Unable to send datagram UDP server" message is probably not anti-virus related, as was speculated here. I'm getting it on a fresh Ubuntu install as well. The thing it's trying to send to is up and running when the error message pops up, and in fact it resumes working once you clear the error dialogs. What's mostly problematic right now is that when this occurs the error dialogs stack up, so to if you walk away for a while you might have to click "OK" or "CANCEL" a few hundred times (or outright kill the app).

Tonight I'll try to strace it and see if send() or sendto() is returning a meaningful error message.


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Michael Black
 

We aren't talking about the amplifier linearity -- we're talking about the rig's power level being linear with the input audio data.  That's how you ensure you aren't into the ALC compression.It all depends on how the engineers design their ALC circuit.
So this for example going to the rig in digital format over a USB cable....skip the digital part if you're using an audio device like SignaLink or RigBlaster.Not that voltage here is a representation of -1 to 1V and is arbitrary at this point but typical values used for digital audio levels.Note that a command situation for over driving is people feeding MIC inputs with Line or Speaker level voltages.  MIC's operating at 100 millivolt levels and below which is far below the line levels of 1V and speaker levels of 10V or more.
32767 = 1V  (yes -- it's not 32768 -- 16-bit audio range is -32768 to 32767 or 0x1000 to 0x7FFF16384 = 0.5V = -3dB8192 = 0.25V = -6dB4096 = 0.125V = -9dB
Mike W9MDB

On Monday, January 3, 2022, 11:51:16 AM CST, Steve Kavanagh via groups.io <sjkavanagh1@...> wrote:

Thanks for all the input.  But I am afraid I don't really follow....so keep it coming, please. 

In most WSJT-X modes the amplitude is constant, so there is absolutely no need for RF amplification to be linear (maybe linear will help in MSK144 to some degree, in practice, if not in simple theory). A Class C or D amp will work just as well as a linear one, with the exception perhaps of some "key clicks" at the beginning and end of each transmission.  No intermod is generated by a non-linear amp when the signal is a single frequency at a time, like FT8, for example

But the audio amplification definitely has to be very linear to avoid creating audio harmonics.

If ALC works instantaneously - in other words it directly clips the audio, with no time constants involved, then it will generate audio harmonics.  If it works more slowly (like AGC in a receiver) then it might generate some distortion due to a fast attack time (perhaps for a few milliseconds at the beginning of a transmission), but then it ought to settle down to a reduced value of linear audio amplification.  I thought ALC was normally the latter - fast attack, slow decay.  Am I wrong?

Yes, Alan (G4ZFQ), I suppose if you are trying to set milliwatt transmit powers from a rig that will normally only go down to 5 watts, say, it would be useful to operate with no ALC so the output is proportional to the input in every way.

73,
Steve VE3SMA


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Steve Kavanagh
 

Thanks for all the input. But I am afraid I don't really follow....so keep it coming, please.

In most WSJT-X modes the amplitude is constant, so there is absolutely no need for RF amplification to be linear (maybe linear will help in MSK144 to some degree, in practice, if not in simple theory). A Class C or D amp will work just as well as a linear one, with the exception perhaps of some "key clicks" at the beginning and end of each transmission. No intermod is generated by a non-linear amp when the signal is a single frequency at a time, like FT8, for example

But the audio amplification definitely has to be very linear to avoid creating audio harmonics.

If ALC works instantaneously - in other words it directly clips the audio, with no time constants involved, then it will generate audio harmonics. If it works more slowly (like AGC in a receiver) then it might generate some distortion due to a fast attack time (perhaps for a few milliseconds at the beginning of a transmission), but then it ought to settle down to a reduced value of linear audio amplification. I thought ALC was normally the latter - fast attack, slow decay. Am I wrong?

Yes, Alan (G4ZFQ), I suppose if you are trying to set milliwatt transmit powers from a rig that will normally only go down to 5 watts, say, it would be useful to operate with no ALC so the output is proportional to the input in every way.

73,
Steve VE3SMA


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Michael Black
 

Thanks for the patch -- it's been applied to hamlib.
Mike W9MDB

On Monday, January 3, 2022, 11:34:56 AM CST, mattwood2000@... <mattwood2000@...> wrote:

Hi Steve,

I've been running my FT-897D remotely in the garage with rigctld and
network audio streams.  This works OK and while I haven't had reports
of audio issues, I haven't had a chance to set up another rig to truly
analyze my transmit audio.  But, I did notice the 897 does seem to be
a bit heavy on the ALC according to its display depending on the FT8
TX audio frequency.

Slightly off topic but might be relevant to your setup.  The 8x7 rigs
seem to have hidden CAT support for ALC, not sure about others:

http://www.ka7oei.com/ft817_meow.html

Attached is a patch for Hamlib to add ALC support to the 897. It's a
hack but does work.  Not sure which Yaesu you run, but you might be
able to adapt this to your rig and needs.

73, Matt - N1YQE


On Mon, Jan 3, 2022 at 10:18 AM Steve Kavanagh via groups.io
<sjkavanagh1@...> wrote:

There seems to be "received wisdom" that for non-Elecraft radios one must operate WSJT-X modes with no ALC action.  Having recently acquired a new Yaesu radio, I found a variety of videos and reflector postings instructing that this is the way to operate my radio on FT8, etc.  Yet, my own experimentation has shown (at least to my initial satisfaction) that ALC action in itself does not appear to cause any significant degradation of the signal quality, so long as the various audio levels and gains are adjusted correctly.

I am just wondering how this got started.  Are there rigs with ALC action that is so fast as to cause significant audio distortion, other than maybe very briefly at the start of transmission?  Is it still true for modern Yaesu's and I'm missing something, perhaps of a transient or dynamic nature?

73,
Steve VE3SMA





locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

mattwood2000@...
 

Hi Steve,

I've been running my FT-897D remotely in the garage with rigctld and
network audio streams. This works OK and while I haven't had reports
of audio issues, I haven't had a chance to set up another rig to truly
analyze my transmit audio. But, I did notice the 897 does seem to be
a bit heavy on the ALC according to its display depending on the FT8
TX audio frequency.

Slightly off topic but might be relevant to your setup. The 8x7 rigs
seem to have hidden CAT support for ALC, not sure about others:

http://www.ka7oei.com/ft817_meow.html

Attached is a patch for Hamlib to add ALC support to the 897. It's a
hack but does work. Not sure which Yaesu you run, but you might be
able to adapt this to your rig and needs.

73, Matt - N1YQE


On Mon, Jan 3, 2022 at 10:18 AM Steve Kavanagh via groups.io
<sjkavanagh1@...> wrote:

There seems to be "received wisdom" that for non-Elecraft radios one must operate WSJT-X modes with no ALC action. Having recently acquired a new Yaesu radio, I found a variety of videos and reflector postings instructing that this is the way to operate my radio on FT8, etc. Yet, my own experimentation has shown (at least to my initial satisfaction) that ALC action in itself does not appear to cause any significant degradation of the signal quality, so long as the various audio levels and gains are adjusted correctly.

I am just wondering how this got started. Are there rigs with ALC action that is so fast as to cause significant audio distortion, other than maybe very briefly at the start of transmission? Is it still true for modern Yaesu's and I'm missing something, perhaps of a transient or dynamic nature?

73,
Steve VE3SMA





locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Michael Black
 

That's one thing I do with everybody I work with is ensure linear operation.
So if you have 100W at full scale in WSJT-X then taking the power slider down in 3db increments will halve the power each time.
So
-3dB = 50W-6dB = 25W-9dB = 12W
If you don't get that first -3db=50W then you are not in the linear operating range of your rig. 
Mike W9MDB



On Monday, January 3, 2022, 11:20:50 AM CST, Alan G4ZFQ <alan4alan@...> wrote:

> I am just wondering how this got started.  Are there rigs with ALC action that is so fast as to cause significant audio distortion,

Steve,

Another thing, maybe more useful for QRP, is that if ALC is not working
then the WSJT-X power slider will reduce power linearly.

73 Alan G4ZFQ


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Alan G4ZFQ
 

I am just wondering how this got started. Are there rigs with ALC action that is so fast as to cause significant audio distortion,
Steve,

Another thing, maybe more useful for QRP, is that if ALC is not working then the WSJT-X power slider will reduce power linearly.

73 Alan G4ZFQ


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Joe Subich, W4TV
 

On 2022-01-03 11:26 AM, Michael Black via groups.io wrote:
I should have also said....
If you can generate 90W into your rig set at 100W with no ALC is the extra 10W going to really help? The answer is no.
Almost every rig with a 12V final amplifier (most all 100W rigs) is
pushing the 1 dB compression point of the final amplifier devices
at 80W (PEP) output. If the rig is properly aligned, that 1dB
compression point is very close to the "onset of ALC" ...

Even if one does not have *AUDIO* artifacts, final amplifier clipping
(harmonics) and IMD (adjacent channel distortion) start to rise very
quickly once one has exceeded 1dB of compression in the final amplifier
(and some analog rigs reach 1dB of compression in the IF stages even
earlier if they are not properly aligned!).

73,

... Joe, W4TV


On 2022-01-03 11:26 AM, Michael Black via groups.io wrote:
I should have also said....
If you can generate 90W into your rig set at 100W with no ALC is the extra 10W going to really help?  The answer is no.
Unless you can monitor your own signal to ensure you do not have harmonics that 0dB ALC point is where you should stick.  The trick is finding that 0dB ALC point.
I'll have to do this experiment on my IC706MKIIG and Omni VII which are both analog audio and easy to overdrive.
Mike W9MDB
On Monday, January 3, 2022, 10:20:51 AM CST, Sam Birnbaum via groups.io <w2jdb@...> wrote:
Great answer Mike.
73,
Sam W2JDB
-----Original Message-----
From: Michael Black via groups.io <mdblack98@...>
To: main@wsjtx.groups.io <main@wsjtx.groups.io>; main@WSJTX.groups.io <main@wsjtx.groups.io>
Sent: Mon, Jan 3, 2022 10:58 am
Subject: Re: [WSJTX] ALC Levels on non-Elecraft Radios - History? #transmit
Nothing to do with transients.
Has to do with rig calibration, ALC feedback circuit, and the level at which ALC starts attenuating the signal.     Then it is how does that level relate to clipping the audio.  So does ALC start at 1V or 0.9V or 1.1V?  It's all variable.Elecraft calibrates theirs to approx 4 bars of ALC is 0dB.
The logical approach is simple....you increase your audio level into the rig via the rig gain, the audio device gain, and 0dB on the computer until you get approx 90% of the rig's power setting.I have yet to see a rig that generates ALC if you are putting 40W into a rig set at 50W.What you'll see is as you approach 50W the ALC will start increasing....generally I would think you won't
Mike W9MDB
    On Monday, January 3, 2022, 09:18:27 AM CST, Steve Kavanagh via groups.io <sjkavanagh1@...> wrote:
There seems to be "received wisdom" that for non-Elecraft radios one must operate WSJT-X modes with no ALC action.  Having recently acquired a new Yaesu radio, I found a variety of videos and reflector postings instructing that this is the way to operate my radio on FT8, etc.  Yet, my own experimentation has shown (at least to my initial satisfaction) that ALC action in itself does not appear to cause any significant degradation of the signal quality, so long as the various audio levels and gains are adjusted correctly.
I am just wondering how this got started.  Are there rigs with ALC action that is so fast as to cause significant audio distortion, other than maybe very briefly at the start of transmission?  Is it still true for modern Yaesu's and I'm missing something, perhaps of a transient or dynamic nature?
73,
Steve VE3SMA


locked WSJT-X 2.5.4 GA Release #general

Joe
 

Please welcome two new members of the core WSJT Development group: Chet Fennell, KG4IYS, and Uwe Risse, DG2YCB. Each brings important skills and experience to the project, after the loss of Bill Somerville, G4WJS.

The newly constituted group has been working to redefine standard operating procedures for new releases. WSJT-X 2.5.4, a bug-fix release correcting these two flaws in release 2.5.3, is now available as a General Availability (GA) release.

Changes from v2.5.3 are:

WSJT-X: Repair a defect that caused occasional crashes when in QSO with
stations using nonstandard callsigns.

MAP65: Correct a bug that prevented "Best-fit Delta phi" solutions from being displayed to the user.

Links to WSJT-X 2.5.4 installation packages for Windows and Linux are available here:
http://physics.princeton.edu/pulsar/k1jt/wsjtx.html

Thanks to John Nelson, G4KLA, the installation package for macOS will be added soon.

You can also download the packages from our SourceForge site:
https://sourceforge.net/projects/wsjt/files/
It may take a short time for the SourceForge site to be updated.

WSJT-X is licensed under the terms of Version 3 of the GNU General Public License (GPL). Development of this software is a cooperative project to which many amateur radio operators have contributed. If you use our code, please have the courtesy to let us know about it. If you find bugs or make improvements to the code, please report them to us in a timely fashion.

The authors and Copyright holders of WSJT-X request that derivative works should not publish programs based on features in WSJT-X before those features are made available in a General Availability (GA) release of WSJT-X. We will cease making public Release Candidate (RC) pre-releases for testing and user early access purposes if this request is ignored.

Bugs should be reported by following instructions found here in the User Guide:

https://www.physics.princeton.edu//pulsar/K1JT/wsjtx-doc/wsjtx-main-2.5.4.html#_bug_reports

We hope you will enjoy using WSJT-X 2.5.4.

-- 73 from Joe, K1JT; Steve, K9AN; Nico, IV3NWV; Chet, KG4IYS; and
Uwe, DG3YCB.


locked Re: ALC Levels on non-Elecraft Radios - History? #transmit

Michael Black
 

I should have also said....
If you can generate 90W into your rig set at 100W with no ALC is the extra 10W going to really help?  The answer is no.
Unless you can monitor your own signal to ensure you do not have harmonics that 0dB ALC point is where you should stick.  The trick is finding that 0dB ALC point.
I'll have to do this experiment on my IC706MKIIG and Omni VII which are both analog audio and easy to overdrive.
Mike W9MDB

On Monday, January 3, 2022, 10:20:51 AM CST, Sam Birnbaum via groups.io <w2jdb@...> wrote:

Great answer Mike.
73,

Sam W2JDB


-----Original Message-----
From: Michael Black via groups.io <mdblack98@...>
To: main@wsjtx.groups.io <main@wsjtx.groups.io>; main@WSJTX.groups.io <main@wsjtx.groups.io>
Sent: Mon, Jan 3, 2022 10:58 am
Subject: Re: [WSJTX] ALC Levels on non-Elecraft Radios - History? #transmit

Nothing to do with transients.
Has to do with rig calibration, ALC feedback circuit, and the level at which ALC starts attenuating the signal.     Then it is how does that level relate to clipping the audio.  So does ALC start at 1V or 0.9V or 1.1V?  It's all variable.Elecraft calibrates theirs to approx 4 bars of ALC is 0dB.
The logical approach is simple....you increase your audio level into the rig via the rig gain, the audio device gain, and 0dB on the computer until you get approx 90% of the rig's power setting.I have yet to see a rig that generates ALC if you are putting 40W into a rig set at 50W.What you'll see is as you approach 50W the ALC will start increasing....generally I would think you won't
Mike W9MDB

    On Monday, January 3, 2022, 09:18:27 AM CST, Steve Kavanagh via groups.io <sjkavanagh1@...> wrote: 

There seems to be "received wisdom" that for non-Elecraft radios one must operate WSJT-X modes with no ALC action.  Having recently acquired a new Yaesu radio, I found a variety of videos and reflector postings instructing that this is the way to operate my radio on FT8, etc.  Yet, my own experimentation has shown (at least to my initial satisfaction) that ALC action in itself does not appear to cause any significant degradation of the signal quality, so long as the various audio levels and gains are adjusted correctly.

I am just wondering how this got started.  Are there rigs with ALC action that is so fast as to cause significant audio distortion, other than maybe very briefly at the start of transmission?  Is it still true for modern Yaesu's and I'm missing something, perhaps of a transient or dynamic nature?

73,
Steve VE3SMA

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