Date   

Re: Cw help

K3EUI Barry
 

Yes.  Thank you.
On some newer rigs, the pitch does not change if you switch from CW mode to USB or USB-D mode.


Remember, you can listen to CW with the rig in CW mode, the way we would expect to.
You tune the VFO to the transmitting frequency  (3581.5 kHz for the W1AW CW bulletins).
That is the frequency they are broadcasting on.
This is more critical if you have a narrow filter (250 Hz).
Now, internally the radio has a  BFO  (beat frequency oscillator) which mixes with the RF signal and produces the audio tone.  Old radios had a  BFO adjust knob. Newer radios have a  "PITCH' adjustment or MENU. Most pick 400 to 700 Hz as a comfortable listening pitch.  Of course, FLDIGI does not care, as long as you center the cursor in the waterfall on the pitch of the sender.

The  CW-U  or  CW-L  only refers to the choice of the BFO frequency.  You can produce the same audio pitch CW by placing the BFO 700 Hz below the RF or  700 Hz above the RF wave.
In both cases, the CW you hear is at an audio pitch of  700 Hz.
The difference is that one setting may eliminate a nearby QRM signal from another ham.
Even with the older rigs, I could just turn the BFO knob and accomplish the same result.
The transmitting RF frequency is your VFO dial freq in CW mode, or, as mentioned, the VFO + the audio pitch if your rig is in USB.  Or  VFO - audio pitch if in Lower Sidebanc.
It is very easy to "zero beat" a station calling CQ.  Just click on his signal trace in the FLDIGI waterfall.
In either LSB or USB, you must be on his/her frequency.

Back to why FLDIGI struggles to put perfect print on the Rx window.
There could be many reasons, but most likely it is that the sender is not sending perfectly timed CW notes. When I listen to bugs (the old mechanical keyers) I oten hear the "dahs" being much longer in duration than  three "dits".
It sounds kind of like a slang.  I understand it, but FLDIGI gets confused.

It can be even worse when the CW spacing between letters and words is say 10 wpm, and the individual dits and dahs are at about 20 wpm.  My brain adjusts.  FLDIGI does not.
If FLGIDI  gets the V V V  correctly, I know I am in good shape to demodulate.

Although I can and often have CW QSO's with my rig in USB (or LSB) mode and key the AUDIO via FLDIGI, and send with my keyboard, not a physical key, I would not call that  MCW  (modulated CW) since the rig eliminates the carrier and "other" sideband.
That is, I call the sending mode  MCW when the rradio does not need a BFO, or when the mode I am sending CW has a carrier with superimposed audio modulation.
Said another way, for it to be called MCW, my rig must be in either AM or FM, since both have a carrier.

Keyed audio into a SSB rig does not produce MCW.
It is just CW, generated a different way from keying an oscillator or buffer.
On a scope, you can't tell HOW I generated CW in my transmitter.
Your ears can't tell either.
Both methods are legal.
Just be careful your audio does not overdrive you SSB radio -  same advice as when you are on phone with a microphone.  NEVER use compression when operating CW in SSB mode.

Oh...  and I never turn on the FLDIGI squelch when operating CW and want to use the Rx window as a kind of backup.  Squelch might distort the sound.

de  K3eui  Barry


Re: Some help needed

Cliff
 

Mike,

Grab the latest alpha for flrig. Dave has made major improvements that has helped a lot of rigs be more responsive. While you’re at it also get the new fldigi as well.


73,
Cliff, AE5ZA

On Jun 2, 2021, at 11:11, Michael Mitchell <mitchellwm4mm@...> wrote:

I run fldigi with cat control. It works well but one small problem. When I start a macro to transmit a message it takes 10 to 15 seconds to key the xmitter. (FLRIG USED) Also when I change frequency on the radio it takes several seconds to show up on the digi main screen.
Thanks
Mike


Some help needed

Michael Mitchell <mitchellwm4mm@...>
 

I run fldigi with cat control. It works well but one small problem. When I start a macro to transmit a message it takes 10 to 15 seconds to key the xmitter. (FLRIG USED) Also when I change frequency on the radio it takes several seconds to show up on the digi main screen.
Thanks
Mike


Re: New feature for FLDIGI or N1MM

Michael Mitchell <mitchellwm4mm@...>
 

A few years ago I used Microsoft speech to text to convert my voice to text in FLdigi. It worked great especially when someone asks a question that needs a qick answer. In operation you had to click in the text window of FLdigi and just speak into the microphone. I did have to manually click on the on screen xmit but to start and end the transmit.
I quit using because I got a new PC and just didnt bother to redo the program. If you are interested let me know and I will set it up again and send you the settings I used.


Re: Moving macros #macros

Dave
 

If you are feeling especially brave, lucky and reckless you can edit the macro definition file using a text editor.  The mdf files are in fldigi.files\macros\

You should not be executing fldigi when editing the macro file with a text editor.

73, David, W1HKJ

On 6/2/21 2:17 PM, Cliff wrote:

Once in the macro editor then right click anywhere in the editor and the popup menu will give you the usual edit options of Copy, Paste, etc. By using these tools you can move things around easily.

For instance if you want to swap two macros positions then Select All and Cut from the first one then go to the second one and paste at the end of that one. Now select only the older part of the second macro and right click and select cut. Now go back to the first one and right click and paste in the now empty first location. Of course edit the button descriptions.

73,
Cliff, AE5ZA

On Jun 2, 2021, at 13:38, Nathan Rosenthal <nate05pa@...> wrote:

Do you mean right-click on the macro button which brings up the editor? 

Nate  N2ADD



Re: Moving macros #macros

Cliff
 

Once in the macro editor then right click anywhere in the editor and the popup menu will give you the usual edit options of Copy, Paste, etc. By using these tools you can move things around easily.

For instance if you want to swap two macros positions then Select All and Cut from the first one then go to the second one and paste at the end of that one. Now select only the older part of the second macro and right click and select cut. Now go back to the first one and right click and paste in the now empty first location. Of course edit the button descriptions.

73,
Cliff, AE5ZA

On Jun 2, 2021, at 13:38, Nathan Rosenthal <nate05pa@...> wrote:

Do you mean right-click on the macro button which brings up the editor? 

Nate  N2ADD


Re: Moving macros #macros

Nathan Rosenthal
 

Do you mean right-click on the macro button which brings up the editor? 

Nate  N2ADD


Re: #fldigi Weather Macro #fldigi

 

John,

You can create macros for other stations without changing your default configuration.

<WX:xxxx> = get weather data for station.

You would have to know the 4 digit code for the other stations.

73, Ron NY3J

On 6/2/21 11:09 AM, Al Massaro KF5SMH wrote:

The other day we had severe Tstorms and Tornadoes in our state, it would have been handy to have ability to check the Wx at the incoming track stations while maintaining the local setup. Yes I can change the ICAO designator back and forth, just would be nice to have an alternative station(s) available.
--
AL M
KF5SMH


Re: Cw help

 

In most new rigs, the dial frequency is the actual frequency on transmit if you are using either CW-L or CW-U – the rig takes care of the audio tone and mode when calculating dial frequency. If you are using USB or USB-D with MCW (keyed audio) then the actual frequency is dial frequency plus your audio frequency.

 

73 Phil GM3ZZA

 

Sent from Mail for Windows 10

 

From: Mel Marcus
Sent: 02 June 2021 15:35
To: winfldigi@groups.io
Subject: Re: [winfldigi] Cw help

 

interesting question if at 14000 and you operate CW-U you would still be legal  , correct?

 

Mel 

NE9A

From: winfldigi@groups.io <winfldigi@groups.io> on behalf of K3EUI Barry via groups.io <k3euibarry@...>
Sent: Wednesday, June 2, 2021 7:20 AM
To: winfldigi@groups.io <winfldigi@groups.io>
Subject: Re: [winfldigi] Cw help

 

Oh...  one more observation.

Why is the rig set to a VFO dial frequency of   14.000000 MHz ?
Any CW signal puts you OUT of the ham band lower edge

de  k3eui

 


Re: #fldigi Weather Macro #fldigi

Al Massaro KF5SMH
 

The other day we had severe Tstorms and Tornadoes in our state, it would have been handy to have ability to check the Wx at the incoming track stations while maintaining the local setup. Yes I can change the ICAO designator back and forth, just would be nice to have an alternative station(s) available.
--
AL M
KF5SMH


Re: Cw help

Dave
 

CW is an amplitude modulated signal with sidebands that extend out below and above the carrier.  The shape and power density of the sidebands is a function of keying speed and keying waveshape.  This is what the spectrum of a 20 WPM CW signal with a 4 msec rise and fall time looks like:



To insure that no lower sideband energy greater than 30 dB below the carrier was outside of the band edge you would have to put the carrier about 100 Hertz about the band edge, 14000.100.

73, David, W1HKJ

On 6/2/21 9:35 AM, Mel Marcus wrote:

interesting question if at 14000 and you operate CW-U you would still be legal  , correct?

Mel 
NE9A

From: winfldigi@groups.io <winfldigi@groups.io> on behalf of K3EUI Barry via groups.io <k3euibarry@...>
Sent: Wednesday, June 2, 2021 7:20 AM
To: winfldigi@groups.io <winfldigi@groups.io>
Subject: Re: [winfldigi] Cw help
 
Oh...  one more observation.

Why is the rig set to a VFO dial frequency of   14.000000 MHz ?
Any CW signal puts you OUT of the ham band lower edge

de  k3eui


Re: Cw help

Mel Marcus <melm@...>
 

interesting question if at 14000 and you operate CW-U you would still be legal  , correct?

Mel 
NE9A

From: winfldigi@groups.io <winfldigi@groups.io> on behalf of K3EUI Barry via groups.io <k3euibarry@...>
Sent: Wednesday, June 2, 2021 7:20 AM
To: winfldigi@groups.io <winfldigi@groups.io>
Subject: Re: [winfldigi] Cw help
 
Oh...  one more observation.

Why is the rig set to a VFO dial frequency of   14.000000 MHz ?
Any CW signal puts you OUT of the ham band lower edge

de  k3eui


Re: FLDIGI 4.1.18 watefall fft different from previous versions

Dave
 

There are some small differences in waterfall processing between 4.1.14 and the current alpha 4.1.18.40.  The changes were made specifically to improve CPU performance and to make the waterfall appearance independent of modem sampling rate.  You can expect that the waterfall appearance at FAST drop down will not be as distinct as NORMAL, and NORMAL not distinct as SLOW.  This is a result of latency reduction.  The waterfall is a time/amplitude representation of the audio spectrum computed using a Fast Fourier Transform.  The sample set size for the SLOW, NORMAL and FAST drop rates vary by 4x, 2x and 1x respectively and the computation cycle changes by 1x, 2x, 4x.  The latency is selected to give a quality view in the NORMAL drop rate.



SLOW drop rate
WF expanded to 4x


NORMAL drop rate
WF expanded to 4x


FAST drop rate
WF expanded to 4x

Image is an Rx capture of a generated transmit wav file, CQ CQ CQ DE W1HKJ K, psk31 mode.

The purpose of the waterfall is to provide s visual assist to signal mode identification and acquisition.  It is not an analytical tool.  fldigi does have a signal analysis tool available, menu item "View/Spectrum scope"



Shown above for the same signal.

I can assist you with where in the code to make changes If you are interested in testing your display and cpu usage for various amount of FFT latency.  You will have to compile fldigi for your testing.  The fldigi wiki provide information on how to build from code on various operating systems and computer platforms.

73, David, W1HKJ


Re: #fldigi Weather Macro #fldigi

Dave
 

Roland,

<WX:EDDK> works OK.



The original poster's problem was caused by entering "http://..." in lieu of "https://..." for the Access URL.

David

On 6/2/21 4:03 AM, roland.hartmann@... wrote:

Maybe helpful to locate the issue…

I have also fldigi 4.1.18 and tried a little bit.

What is working: <WX> without additional parameter. I tried KMDQ  (default) and EDDK (near to my location). Has to be set in the WX-Configuration part.

Not working is, if I try  <WX:KMDQ> or <WX:EDDK>. Equal if the same or another value is set in the WX-configuration part.

Seems giving the parameter do not working ?

 

73 de Roland DK4RH

 

Von: winfldigi@groups.io <winfldigi@groups.io> Im Auftrag von Dave
Gesendet: Dienstag, 1. Juni 2021 02:40
An: winfldigi@groups.io
Betreff: Re: [winfldigi] #fldigi Weather Macro

 

Older versiions and grasping at straws ... neither will solve the problem.

Send me a copy of this file "fldigi_def.xml".  Find it easily by using the fldigi menu item "File/Folders/Fldigi config ...".  Send it to my bellsouth.net address.

David

On 5/29/21 7:57 AM, David Tucker wrote:

Well I did a re-install and it didnt work. Do u have copies of the older versions?? May try that and see what happens.

 

 



Re: Cw help

Steve air force Mars
 


Barry  just took picture of rig and I'm authorized to operate outside band as a Mars station  
may the God and Goddess grant you peace and tranquility all of you days

On Wed, Jun 2, 2021 at 7:20, K3EUI Barry
<k3euibarry@...> wrote:
Oh...  one more observation.

Why is the rig set to a VFO dial frequency of   14.000000 MHz ?
Any CW signal puts you OUT of the ham band lower edge

de  k3eui


Re: Cw help

K3EUI Barry
 

Oh...  one more observation.

Why is the rig set to a VFO dial frequency of   14.000000 MHz ?
Any CW signal puts you OUT of the ham band lower edge

de  k3eui


Re: Cw help

K3EUI Barry
 

 A few comments on sending/receiving CW  with FLDIGI

1)  The waterfall display settings  (-25, 70) only affect what you see on the FLDIGI waterfall.
    They do NOT alter what the sound card hears for CW decoding.
   The waterfall is only a visual aid.

2) Try turning OFF  the  AFC  option  (lower right) and see if that helps put proper print on screen.
   I notice AFC on some other digital modes often keeps "searching" for the center, wanders off the sender's frequency, and can't find its way back.  That reminds me of when I search for my car in a parking lot and I can't remember where I parked!  What is my search algorithm?

3) Try copying W1AW  CW bulletins at night.
    When I tune in to  3581.5 at night (over S9) FLDIGI copies nearly 100% at all speeds.

Experiment with changing the radio's  IF filter bandwidth. Don't make it too narrow.
Let FLDGI sound card do the "filtering".

I also find that FLDIGI copies just as well when my radio is in USB mode, not CW.
Of course, FLDIGI is in CW mode.
The pitch may change a bit compared to the CW offset pitch of 400-700 Hz.
So just move your VFO up/down a bit to "center the audio" where you want it.
When I operate CW but with radio in USB mode, I try to keep the pitch set to about 1000 Hz on the FLDIGI wterfall
Surprisingly, if I keep the ALC to zero when I transmit, I can send perfect CW by keying the AUDIO in the sound card with my keyboard, and with my rig in USB mode.  The receiving station of course does not know this, nor cares HOW I generate the dits/dahs.

Writing software to decode CW must be difficult, since the noise comes in pulses, especially on 80m.
Does setting the "noise reduction" digital filter to ON help any with CW?

I've had no problems with CW on any of my Icom rigs with rig in CW or USB.
I also set the sound level input to around  -20dB  

de  k3eui
Barry


Re: #fldigi Weather Macro #fldigi

Roland (DK4RH)
 

Maybe helpful to locate the issue…

I have also fldigi 4.1.18 and tried a little bit.

What is working: <WX> without additional parameter. I tried KMDQ  (default) and EDDK (near to my location). Has to be set in the WX-Configuration part.

Not working is, if I try  <WX:KMDQ> or <WX:EDDK>. Equal if the same or another value is set in the WX-configuration part.

Seems giving the parameter do not working ?

 

73 de Roland DK4RH

 

Von: winfldigi@groups.io <winfldigi@groups.io> Im Auftrag von Dave
Gesendet: Dienstag, 1. Juni 2021 02:40
An: winfldigi@groups.io
Betreff: Re: [winfldigi] #fldigi Weather Macro

 

Older versiions and grasping at straws ... neither will solve the problem.

Send me a copy of this file "fldigi_def.xml".  Find it easily by using the fldigi menu item "File/Folders/Fldigi config ...".  Send it to my bellsouth.net address.

David

On 5/29/21 7:57 AM, David Tucker wrote:

Well I did a re-install and it didnt work. Do u have copies of the older versions?? May try that and see what happens.

 

 


Re: FLDIGI 4.1.18 watefall fft different from previous versions

iz1fks
 

I don't know Dave, my setting were very close to yours (tried also exactly the same ones) but a difference with waterfall of 4.1.14 is clearly visibile.
I attach a screenshot with fft averaging disabled in both versions, the issue is noticeable in the same way.+
I'm using Win7 64 bit with discrete Nvidia GeForce210.

Since your screenshot shows "normal" waterfall speed, I have tested setting speed to "normal" in both versions instead of "fast", and the waterfall are much more similar, very very close. But using fast speed situation looks different.

I attach also a couple of screenshots taken with normal and fast speed setting, where the different appearance of the waterfall could be more easy to visualize.

73 de Phil, iz1fks


Re: FLDIGI 4.1.18 watefall fft different from previous versions

Dave
 

My hardware and OS are not the same as yours, but there is no reason why the latest alpha should not give similar performance on your system

  waterfall set to 2x

Lubuntu 20.1
ThinkCenter m90p computer, using sysem Intel video system
1920x1080 LG monitor

waterfall parameters set to



73, David, W1HKJ

On 6/1/21 2:39 PM, iz1fks wrote:

thanks very much for your reply Dave. I have installed 4.1.18.40 but I don't see any difference in waterfall comparing with 4.1.18.0 (same settings of course) I'm
still with 4.1.14 with better waterfall
I attach a screenshot with a comparison 4.1.18.40 (left) and 4.1.14 (right) even it's not so clear the difference as it's seeing the waterfall moving.

thanks and 73 de Phil, iz1fks

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