Date   

Re: Introduction and HFDL question - Firefox must be used for online SDR (not Chrome nor Edge)

paget.francois@...
 

Hi all,
Good morning from France,
Just to confirm Firefox is OK :

Yesterday and today, I browsed some KiwiSDR sites where I could hope - according to info behind the “HFDL Frequencies” button - to encounter these signals.

Among other sites, I came across http://matt1234.viewnetcam.com:8073/ where I easily encountered traffic between 8.85 and 9 MHz.

The sound output of my PC was redirected to VB-CABLE input. MultiPSK input on VB-CABLE output. I used Chrome. Otherwise no special settings.

The messages are not decoded. Just like for Allen, MultiPSK returns (see HFDL_01A & 01b):

<600 bps 4,2 sec 1410 Hz>    19/05/2021 11:41:48

SPDU incorrect

<End frame>

 

<300 bps 1,8 sec 1454 Hz>    19/05/2021 11:42:28

Contrôle CRC du SPDU: erreur

<End frame>

 

<1200 bps 1,8 sec 1386 Hz>    19/05/2021 12:02:23

SPDU incorrect

<End frame>

 

Same inconclusive experiment on a WebSDR site: http://websdr2.sdrutah.org:8902/index1a.html

 

Then, I reviewed a video I recommend to anyone interested in decoding digimodes in the world of air traffic: https://www.youtube.com/watch?v=K0tecn_9hok.

At 12min. and 50 seconds from the start, HFDL signals are heard, and multiPSK decodes some of them (see HFDL_02A & 02b):

 

<300 bps 1,8 sec 1527 Hz>    19/05/2021 12:34:21

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

[LPDU "Données d'acquittement non numérotées"] [Enveloped Data HFNPDU] (Données "enveloppées")

<SOH>2.5Y-KZC<NAK>Q00<STX>S18AKQ0112<ETX>k<DEL>

<End frame>

 

<300 bps 1,8 sec 1520 Hz>    19/05/2021 12:38:49

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

[LPDU "Données d'acquittement non numérotées"] [Enveloped Data HFNPDU] (Données "enveloppées")

<SOH>2.N728AV<NAK>Q07<STX>S80AAV0094<ETX>j<ETB><DEL>

<End frame>

 

Finally, this morning, following the news of the day, I tried again on http://websdr2.sdrutah.org:8902/index1a.html with Firefox, and everything is OK!

(see HFDL_03A & 03b)

<600 bps 1,8 sec 1528 Hz>    20/05/2021 08:22:34

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

 

[LPDU "Données non numérotées"] [Performance data HFNPDU] (Données de performance)

Heure UTC: 08:08:06 UTC   Identificateur de vol: ACA730   Latitude: 16-23.44N   Longitude: 160-02.47W

Version de performance: 18   "Flight leg"': 3

Identificateur de la Station au Sol: 2 - Molokai, HAWAII, USA (157-10-46W 21-10-47N)

Numéro de fréquence: 3 (13324.0 KHz)

Nombre précédent de recherches de fréquence: 0

Nombre courant de recherches de fréquence: 1

Durée précédente d'indisponibilité des données HF: 628 sec

Durée courante d'indisponibilité des données HF: 0 sec

MPDU reçus sans erreur: 0 (1800 bps) / 0 (1200 bps) / 7 (600 bps) / 255 (300 bps)

MPDU reçus avec erreurs: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 3 (300 bps)

SPDU reçus sans erreur: 473

SPDU reçus avec erreurs: 6

MPDU transmis: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 13 (300 bps)

MPDU délivrés: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 13 (300 bps)

Pas de changement de fréquence depuis le dernier HFNPDU "Données de performance"

Contrôle CRC du LPDU: OK

 

Regards,

73,

Francois, F-80543


ADS-B Mode and rsp_tcp_V_1_1.exe

Michael Jackson
 

Is there a switch in the rsp_tcp_V-1_1.exe file for turning on the Bias-T on my RSPDx?  I have an active antenna I would like to try for ADS-B reception?

de Mike k


Re: new modes page

Michael Jackson
 

Thanks for this Mike, and as a long time user of MultiPSK I have used this only for ICAO SELCAL decoding as there really is no alternative SELCAL decoder on the market and for this reason I think this mode should also be included in your list.


From: multipsk@groups.io <multipsk@groups.io> on behalf of mike agner <ka3jjz@...>
Sent: Thursday, May 20, 2021 6:53:07 AM
To: multipsk@groups.io <multipsk@groups.io>
Subject: [multipsk] new modes page
 
Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Allen Watkin
 

Hi Mike
It’s working fine now-great program,by the way!
Regards
Allen

On Thu, 20 May 2021 at 22:57, agene <virtualtrains@...> wrote:
Hi Allen,

As others have advised, Display-Launcher no longer uses TCP/IP to read the traffic from MultiPSK, I did away with that some years ago. The latest version is on my site as under, if you have further problems please contact me direct. The email address will be in the download documents on the web site.

Regards, Mike Simpson
South Penrith, NSW, Australia

Original msg ----
Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 

Any ideas?
Allen





--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Allen Watkin
 

Thanks Patrick
It’s working fine now
Allen

On Thu, 20 May 2021 at 19:25, Patrick Lindecker <f6cte@...> wrote:

Hello Allen,

 

To activate the regular saving QSO, click on “QSO” then push on the “Regular back-up” button. Select a “1 min” period, so the back-up file (for the day) will be updated each minute.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Paul Gulliver
Envoyé : jeudi 20 mai 2021 13:56
À : multipsk@groups.io
Objet : Re: [multipsk] new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

 

It's a long time since I used Multipsk with D/L, is Multipsk updating the QSO file ok?

 

 I think in Multipsk the update time has to be set to something like 30 seconds or 1 minute otherwise you won't see the latest data - I have mine set to regular backup and 30 seconds

 

You shouldn't have to keep pressing the "read QSO" button in D/L it should read and update automatically - about every 30 seconds or so

 

There is a good pdf document describing the setup of D/L included with the program, just looking at it, it suggests 1 minute for the log update time

 

Paul

 

On 20/05/2021 at 12:32, Allen Watkin <allenwatkin1@...> wrote:

Hi Paul

I’ve sort of got it going-Display Launcher has logged all the flights I decoded from this morning,but isn’t decoding any current ones.

I’ve tried pressing the Read QSO file button,but then the program says “not responding “

 

Allen

 

On Thu, 20 May 2021 at 10:54, Paul Gulliver <paulg1953@...> wrote:

It reads the log file, in the Display launcher options menu just point it to the Multipsk log (QSO)  file - it doesn't require the TCP/IP at all

From memory I think this applies to all the different sections of Display launcher

 

Paul

-

 

On 20/05/2021 at 10:23, Allen Watkin <allenwatkin1@...> wrote:

Ok

I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 

 

 



--

 




--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

agene
 

Hi Allen,

As others have advised, Display-Launcher no longer uses TCP/IP to read the traffic from MultiPSK, I did away with that some years ago. The latest version is on my site as under, if you have further problems please contact me direct. The email address will be in the download documents on the web site.

Regards, Mike Simpson
South Penrith, NSW, Australia

Original msg ----
Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 

Any ideas?
Allen



Browers and radio SDR WEB sites

Patrick Lindecker
 

Hello,

 

Here is a forwarded interesting message from François Paget.

 

Good morning from France,

Just to confirm that Firefox is OK :

 

Yesterday and today, I browsed some KiwiSDR sites where I could hope - according to info behind the “HFDL Frequencies” button - to encounter these signals.

Among other sites, I came across http://matt1234.viewnetcam.com:8073/ where I easily encountered traffic between 8.85 and 9 MHz.

The sound output of my PC was redirected to VB-CABLE input. MultiPSK input on VB-CABLE output. I used Chrome. Otherwise no special settings.

The messages are not decoded. Just like for Allen, MultiPSK returns (see HFDL_01A & 01b):

<600 bps 4,2 sec 1410 Hz>    19/05/2021 11:41:48

SPDU incorrect

<End frame>

 

<300 bps 1,8 sec 1454 Hz>    19/05/2021 11:42:28

Contrôle CRC du SPDU: erreur

<End frame>

 

<1200 bps 1,8 sec 1386 Hz>    19/05/2021 12:02:23

SPDU incorrect

<End frame>

 

Same inconclusive experiment on a WebSDR site: http://websdr2.sdrutah.org:8902/index1a.html

 

Then, I reviewed a video I recommend to anyone interested in decoding digimodes in the world of air traffic: https://www.youtube.com/watch?v=K0tecn_9hok.

At 12min. and 50 seconds from the start, HFDL signals are heard, and multiPSK decodes some of them (see HFDL_02A & 02b):

 

<300 bps 1,8 sec 1527 Hz>    19/05/2021 12:34:21

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

[LPDU "Données d'acquittement non numérotées"] [Enveloped Data HFNPDU] (Données "enveloppées")

<SOH>2.5Y-KZC<NAK>Q00<STX>S18AKQ0112<ETX>k<DEL>

<End frame>

 

<300 bps 1,8 sec 1520 Hz>    19/05/2021 12:38:49

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

[LPDU "Données d'acquittement non numérotées"] [Enveloped Data HFNPDU] (Données "enveloppées")

<SOH>2.N728AV<NAK>Q07<STX>S80AAV0094<ETX>j<ETB><DEL>

<End frame>

 

Finally, this morning, following the news of the day, I tried again on http://websdr2.sdrutah.org:8902/index1a.html with Firefox, and everything is OK!

(see HFDL_03A & 03b)

<600 bps 1,8 sec 1528 Hz>    20/05/2021 08:22:34

Contrôle CRC du MPDU: OK

MPDU (Media access control Protocol Data Unit) - Descendant

Contrôle CRC du LPDU: OK

 

[LPDU "Données non numérotées"] [Performance data HFNPDU] (Données de performance)

Heure UTC: 08:08:06 UTC   Identificateur de vol: ACA730   Latitude: 16-23.44N   Longitude: 160-02.47W

Version de performance: 18   "Flight leg"': 3

Identificateur de la Station au Sol: 2 - Molokai, HAWAII, USA (157-10-46W 21-10-47N)

Numéro de fréquence: 3 (13324.0 KHz)

Nombre précédent de recherches de fréquence: 0

Nombre courant de recherches de fréquence: 1

Durée précédente d'indisponibilité des données HF: 628 sec

Durée courante d'indisponibilité des données HF: 0 sec

MPDU reçus sans erreur: 0 (1800 bps) / 0 (1200 bps) / 7 (600 bps) / 255 (300 bps)

MPDU reçus avec erreurs: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 3 (300 bps)

SPDU reçus sans erreur: 473

SPDU reçus avec erreurs: 6

MPDU transmis: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 13 (300 bps)

MPDU délivrés: 0 (1800 bps) / 0 (1200 bps) / 1 (600 bps) / 13 (300 bps)

Pas de changement de fréquence depuis le dernier HFNPDU "Données de performance"

Contrôle CRC du LPDU: OK

 

Regards,

73,

Francois


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Patrick Lindecker
 

Hello Allen,

 

To activate the regular saving QSO, click on “QSO” then push on the “Regular back-up” button. Select a “1 min” period, so the back-up file (for the day) will be updated each minute.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Paul Gulliver
Envoyé : jeudi 20 mai 2021 13:56
À : multipsk@groups.io
Objet : Re: [multipsk] new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

 

It's a long time since I used Multipsk with D/L, is Multipsk updating the QSO file ok?

 

 I think in Multipsk the update time has to be set to something like 30 seconds or 1 minute otherwise you won't see the latest data - I have mine set to regular backup and 30 seconds

 

You shouldn't have to keep pressing the "read QSO" button in D/L it should read and update automatically - about every 30 seconds or so

 

There is a good pdf document describing the setup of D/L included with the program, just looking at it, it suggests 1 minute for the log update time

 

Paul

 

On 20/05/2021 at 12:32, Allen Watkin <allenwatkin1@...> wrote:

Hi Paul

I’ve sort of got it going-Display Launcher has logged all the flights I decoded from this morning,but isn’t decoding any current ones.

I’ve tried pressing the Read QSO file button,but then the program says “not responding “

 

Allen

 

On Thu, 20 May 2021 at 10:54, Paul Gulliver <paulg1953@...> wrote:

It reads the log file, in the Display launcher options menu just point it to the Multipsk log (QSO)  file - it doesn't require the TCP/IP at all

From memory I think this applies to all the different sections of Display launcher

 

Paul

-

 

On 20/05/2021 at 10:23, Allen Watkin <allenwatkin1@...> wrote:

Ok

I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 

 

 



--

 


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Paul Gulliver
 

It's a long time since I used Multipsk with D/L, is Multipsk updating the QSO file ok?

 I think in Multipsk the update time has to be set to something like 30 seconds or 1 minute otherwise you won't see the latest data - I have mine set to regular backup and 30 seconds

You shouldn't have to keep pressing the "read QSO" button in D/L it should read and update automatically - about every 30 seconds or so

There is a good pdf document describing the setup of D/L included with the program, just looking at it, it suggests 1 minute for the log update time

Paul


On 20/05/2021 at 12:32, Allen Watkin <allenwatkin1@...> wrote:
Hi Paul
I’ve sort of got it going-Display Launcher has logged all the flights I decoded from this morning,but isn’t decoding any current ones.
I’ve tried pressing the Read QSO file button,but then the program says “not responding “

Allen

On Thu, 20 May 2021 at 10:54, Paul Gulliver <paulg1953@...> wrote:
It reads the log file, in the Display launcher options menu just point it to the Multipsk log (QSO)  file - it doesn't require the TCP/IP at all
From memory I think this applies to all the different sections of Display launcher

Paul
-

On 20/05/2021 at 10:23, Allen Watkin <allenwatkin1@...> wrote:
Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 





--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Allen Watkin
 

Hi Paul
I’ve sort of got it going-Display Launcher has logged all the flights I decoded from this morning,but isn’t decoding any current ones.
I’ve tried pressing the Read QSO file button,but then the program says “not responding “

Allen

On Thu, 20 May 2021 at 10:54, Paul Gulliver <paulg1953@...> wrote:
It reads the log file, in the Display launcher options menu just point it to the Multipsk log (QSO)  file - it doesn't require the TCP/IP at all
From memory I think this applies to all the different sections of Display launcher

Paul
-

On 20/05/2021 at 10:23, Allen Watkin <allenwatkin1@...> wrote:
Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 





--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Paul Gulliver
 

It reads the log file, in the Display launcher options menu just point it to the Multipsk log (QSO)  file - it doesn't require the TCP/IP at all
From memory I think this applies to all the different sections of Display launcher

Paul
-


On 20/05/2021 at 10:23, Allen Watkin <allenwatkin1@...> wrote:
Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 



Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Allen Watkin
 

Ok
I’ve just discovered Mike Simpsons Display Launcher program,but I can’t get it to work with with MultiPSK.I’ve opened and activated the TCP/IP function,but I’m not getting any data through 

Any ideas?
Allen

On Wed, 19 May 2021 at 21:49, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

ADS-B works only if Multipsk is directly connected with a wide band SdR (RTL-SDR or SDR play).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : mercredi 19 mai 2021 22:19
À : multipsk@groups.io
Objet : Re: [multipsk] new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

 

 

Patrick

I see on my MultiPSK that there is a button for ADS-B,but it seems shaded out.

Is that going to be a feature of MultiPSK anytime soon?

Allen 

On Wed, 19 May 2021 at 20:51, Patrick Lindecker <f6cte@...> wrote:

Thanks for the interesting WEB page Mike.

 

I have added this link in the Multipsk manual  and in my WEB site.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de mike agner
Envoyé : mercredi 19 mai 2021 20:53
À : multipsk@groups.io
Objet : [multipsk] new modes page

 

Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike



--




--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Patrick Lindecker
 

Allen,

 

ADS-B works only if Multipsk is directly connected with a wide band SdR (RTL-SDR or SDR play).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : mercredi 19 mai 2021 22:19
À : multipsk@groups.io
Objet : Re: [multipsk] new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

 

 

Patrick

I see on my MultiPSK that there is a button for ADS-B,but it seems shaded out.

Is that going to be a feature of MultiPSK anytime soon?

Allen 

On Wed, 19 May 2021 at 20:51, Patrick Lindecker <f6cte@...> wrote:

Thanks for the interesting WEB page Mike.

 

I have added this link in the Multipsk manual  and in my WEB site.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de mike agner
Envoyé : mercredi 19 mai 2021 20:53
À : multipsk@groups.io
Objet : [multipsk] new modes page

 

Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike



--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Allen Watkin
 


Patrick
I see on my MultiPSK that there is a button for ADS-B,but it seems shaded out.
Is that going to be a feature of MultiPSK anytime soon?
Allen 

On Wed, 19 May 2021 at 20:51, Patrick Lindecker <f6cte@...> wrote:

Thanks for the interesting WEB page Mike.

 

I have added this link in the Multipsk manual  and in my WEB site.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de mike agner
Envoyé : mercredi 19 mai 2021 20:53
À : multipsk@groups.io
Objet : [multipsk] new modes page

 

Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike




--


Re: new modes page - HF and LF Modes used by MultiPSK on wiki.radioreference

Patrick Lindecker
 

Thanks for the interesting WEB page Mike.

 

I have added this link in the Multipsk manual  and in my WEB site.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de mike agner
Envoyé : mercredi 19 mai 2021 20:53
À : multipsk@groups.io
Objet : [multipsk] new modes page

 

Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike


Introduction and HFDL question - Firefox must be used for online SDR (not Chrome nor Edge)

Patrick Lindecker
 

RR for the confirmation Hugh.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Utility World (Hugh Stegman)
Envoyé : mercredi 19 mai 2021 20:42
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

I had the same problem with Chrome. It worked fine until a recent update.  Now it interferes with the decode of many modes.  Firefox has been fine here. I just tested both browsers on the same HFDL signal, and my results were the same. Chrome was nearly all errors, but Firefox was 100%.

Edge uses the same rendering engine as Chrome, so it wouldn't surprise me if it has the same problems.

-hugh

 

On 5/19/2021 7:53 AM, Allen Watkin wrote:

Firefox installed and working fine with MultiPSK!

 

Many thanks

 

Allen

 

On Sun, 16 May 2021 at 21:27, Ary <udxf@...> wrote:

Note that Chrome and Edge browsers are causing sound problems preventing many decoders to decode the signal properly. Try Firefox instead. That works fine.

Recordings made with the recording options of the web sdrs while using Edge or Chrome are usually good.

 

Also note that the Firefox extension PopUpOFF may cause problems with Web-based SDRs. There are no problems if you don't use this.

 

73 Ary

 

Op 16-5-2021 om 19:59 uur schreef Patrick Lindecker <f6cte@...>:

>I tried the PC-HFDL program using the Kiwi too,and got all error messages.

It is possible that the SDR demodulation used by Kiwi SdR be of poor quality, certainly sufficient for slow modulations but not for quick modulations, and especially not for PSK modulation where you need to lock the phase and to deconvolute the signal according to the transmission channel.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 19:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Tried both 8 and 16 bits

No joy,still completely CRC error messages.

I’m sure it’s a problem with the Kiwi SDR.

I tried the PC-HFDL program using the Kiwi too,and got all error messages.

 

I switched to the Global Tuners site and it was much better,on both MultiPSK and PC-HFDL

 

Allen

 

On Sun, 16 May 2021 at 17:14, Patrick Lindecker <f6cte@...> wrote:

RR Allen, but I was speaking of “8 bits” on Multipsk (look at “Adjustments” on the menu bar at the top of the screen, then “AF levels+Sound card”).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 17:56


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Patrick

I only have 16 bit options on my sound card.

See photo

I’ve also tried adjusting the levels,no change.

No change with the slight frequency adjustment either

 

Allen

 

On Sun, 16 May 2021 at 16:45, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

I was thinking that for a virtual connection, as Stereo mix, the sampling frequency must be 48000 Hz strictly as it is not a physical connection. Also, once the “all errors phase” begun, try to change the audio level . or the frequency tuning (a bit) to determine the origin of the problem.

Are you in 16 bits or 8 bits? If in 16 bits, switch to 8 bits as there is the risk of switch around the bytes in 16 bits.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 16:13


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Scrub that...after 10 minutes of not too bad decodes,it’s back to the error messages

 

On Sun, 16 May 2021 at 14:50, Allen Watkin via groups.io <allenwatkin1=gmail.com@groups.io> wrote:

Hi Patrick

I think the problem lies with Kiwi SDR.

I changed to one of the Global Tuners radios,and I’m receiving decoded messages on my MultiPSK.

 

Allen

 

 

On Sun, 16 May 2021 at 13:36, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

>What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

This probably means that the signal has been distorted somewhere on the transmission of the AF signal. High speeds PSK modes as HFDL can’t bear much distortion (at least the ones implemented in Multipsk). Also check that the HFDL is not mixed with another signal (even at low level).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 13:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

No just using the stereo mix on my computer.I’ve tried adjusting the levels also.

What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

 

 

On Sun, 16 May 2021 at 11:47, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

How do you connect the SDR online to Multipsk?

Via a physical cable from sound card output to input?

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 12:37
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Hi Patrick

Done everything you suggested,no change.

I’m using an online SDR(Kiwi),but I’m also using that for decoding selcals(and I’m getting pretty much 100% success decoding those),so I do know why I’m getting the error messages.

 

I’ve tried tuning the SDR either side of the HFDL frequency (for 8942,I’ve tried 8941.95 through to 8942.05),no luck there.

 

See attached photo

 

Regards 

Allen

 

On Sun, 16 May 2021 at 09:24, Patrick Lindecker <f6cte@...> wrote:

Hello Allen

 

Could you check this (especially the sound level):

 

Calibration of the sound card (not for SdR interfaced with Multipsk)

It is strongly recommended to calibrate the sound-card: click on the
"Adjustments" menu button, then select the "Determination of the RX/TX
sound-card sampling frequencies
" option and push on the "Determination of
the 48 KHz RX sampling frequency (test on 3 minutes)
" button. At the end of
the test, click on "Return",
Now, if the speed is very close to 48000 Hz (let's say between 47950 and 48050), it's better to manually set it to 48000 Hz.

Sound level

About the sound level ("Level" indication in % at the top of the
screen): an AF level superior or equal to 10 % is OK. About 50 % is ideal
(but not critical). In case of very low AF level, select "16 bits" in the
"Determination of the RX/TX sound-card sampling frequencies" option
("Adjustments" menu button).

It is normal to receive from time to time “CRC fails”, but not always.

Note that it can also be a problem of tuning accuracy. If you are too much far away from the nominal frequency, the digital PLL does not lock.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 08:33
À : multipsk@groups.io
Objet : [multipsk] Introduction and HFDL question

 

Hi

My name is Allen,and I’ve just started using MultiPSK.It looks an impressive program too,lots of different modes I wasn’t even aware of.I listen to aero HF,and it’s spot on,practically 100% accurate in decoding selcal codes.I also want to use it to decode HFDL messages.

 

I’ve used the Charles Brain PC-HFDL program in the past,and that was always pretty accurate,but when I try to decode HFDL with MultiPSK,most of the time I get “CRC fail” messages.Seeing as the selcal codes are being decoded correctly,I don’t think it’s a problem with my sound card(I’m using the stereo mix on my PC).

 

Also,whilst watching a YouTube tutorial about HFDL,MultiPSK decoded the sound from the video successfully,but when I went back to “live” decoding,it was back to the CRC fail messages.

 

Is there any setting in the MultiPSK program I should enable,in order to receive correctly decoded messages?.Has anyone else experienced these CRC fail messages?

 

Allen

--

 

--

Attachments:

 

--

 

--

 

--

 

--

Attachments:

 

--

 



--


 
 
 


Re: Introduction and HFDL question

Patrick Lindecker
 

>Firefox installed and working fine with MultiPSK!

Thanks for the information Allen. It’s not trivial to know that the problem can come from the browser.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : mercredi 19 mai 2021 16:54
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Firefox installed and working fine with MultiPSK!

 

Many thanks

 

Allen

 

On Sun, 16 May 2021 at 21:27, Ary <udxf@...> wrote:

Note that Chrome and Edge browsers are causing sound problems preventing many decoders to decode the signal properly. Try Firefox instead. That works fine.

Recordings made with the recording options of the web sdrs while using Edge or Chrome are usually good.

 

Also note that the Firefox extension PopUpOFF may cause problems with Web-based SDRs. There are no problems if you don't use this.

 

73 Ary

 

Op 16-5-2021 om 19:59 uur schreef Patrick Lindecker <f6cte@...>:

>I tried the PC-HFDL program using the Kiwi too,and got all error messages.

It is possible that the SDR demodulation used by Kiwi SdR be of poor quality, certainly sufficient for slow modulations but not for quick modulations, and especially not for PSK modulation where you need to lock the phase and to deconvolute the signal according to the transmission channel.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 19:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Tried both 8 and 16 bits

No joy,still completely CRC error messages.

I’m sure it’s a problem with the Kiwi SDR.

I tried the PC-HFDL program using the Kiwi too,and got all error messages.

 

I switched to the Global Tuners site and it was much better,on both MultiPSK and PC-HFDL

 

Allen

 

On Sun, 16 May 2021 at 17:14, Patrick Lindecker <f6cte@...> wrote:

RR Allen, but I was speaking of “8 bits” on Multipsk (look at “Adjustments” on the menu bar at the top of the screen, then “AF levels+Sound card”).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 17:56


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Patrick

I only have 16 bit options on my sound card.

See photo

I’ve also tried adjusting the levels,no change.

No change with the slight frequency adjustment either

 

Allen

 

On Sun, 16 May 2021 at 16:45, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

I was thinking that for a virtual connection, as Stereo mix, the sampling frequency must be 48000 Hz strictly as it is not a physical connection. Also, once the “all errors phase” begun, try to change the audio level . or the frequency tuning (a bit) to determine the origin of the problem.

Are you in 16 bits or 8 bits? If in 16 bits, switch to 8 bits as there is the risk of switch around the bytes in 16 bits.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 16:13


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Scrub that...after 10 minutes of not too bad decodes,it’s back to the error messages

 

On Sun, 16 May 2021 at 14:50, Allen Watkin via groups.io <allenwatkin1=gmail.com@groups.io> wrote:

Hi Patrick

I think the problem lies with Kiwi SDR.

I changed to one of the Global Tuners radios,and I’m receiving decoded messages on my MultiPSK.

 

Allen

 

 

On Sun, 16 May 2021 at 13:36, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

>What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

This probably means that the signal has been distorted somewhere on the transmission of the AF signal. High speeds PSK modes as HFDL can’t bear much distortion (at least the ones implemented in Multipsk). Also check that the HFDL is not mixed with another signal (even at low level).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 13:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

No just using the stereo mix on my computer.I’ve tried adjusting the levels also.

What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

 

 

On Sun, 16 May 2021 at 11:47, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

How do you connect the SDR online to Multipsk?

Via a physical cable from sound card output to input?

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 12:37
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Hi Patrick

Done everything you suggested,no change.

I’m using an online SDR(Kiwi),but I’m also using that for decoding selcals(and I’m getting pretty much 100% success decoding those),so I do know why I’m getting the error messages.

 

I’ve tried tuning the SDR either side of the HFDL frequency (for 8942,I’ve tried 8941.95 through to 8942.05),no luck there.

 

See attached photo

 

Regards 

Allen

 

On Sun, 16 May 2021 at 09:24, Patrick Lindecker <f6cte@...> wrote:

Hello Allen

 

Could you check this (especially the sound level):

 

Calibration of the sound card (not for SdR interfaced with Multipsk)

It is strongly recommended to calibrate the sound-card: click on the
"Adjustments" menu button, then select the "Determination of the RX/TX
sound-card sampling frequencies
" option and push on the "Determination of
the 48 KHz RX sampling frequency (test on 3 minutes)
" button. At the end of
the test, click on "Return",
Now, if the speed is very close to 48000 Hz (let's say between 47950 and 48050), it's better to manually set it to 48000 Hz.

Sound level

About the sound level ("Level" indication in % at the top of the
screen): an AF level superior or equal to 10 % is OK. About 50 % is ideal
(but not critical). In case of very low AF level, select "16 bits" in the
"Determination of the RX/TX sound-card sampling frequencies" option
("Adjustments" menu button).

It is normal to receive from time to time “CRC fails”, but not always.

Note that it can also be a problem of tuning accuracy. If you are too much far away from the nominal frequency, the digital PLL does not lock.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 08:33
À : multipsk@groups.io
Objet : [multipsk] Introduction and HFDL question

 

Hi

My name is Allen,and I’ve just started using MultiPSK.It looks an impressive program too,lots of different modes I wasn’t even aware of.I listen to aero HF,and it’s spot on,practically 100% accurate in decoding selcal codes.I also want to use it to decode HFDL messages.

 

I’ve used the Charles Brain PC-HFDL program in the past,and that was always pretty accurate,but when I try to decode HFDL with MultiPSK,most of the time I get “CRC fail” messages.Seeing as the selcal codes are being decoded correctly,I don’t think it’s a problem with my sound card(I’m using the stereo mix on my PC).

 

Also,whilst watching a YouTube tutorial about HFDL,MultiPSK decoded the sound from the video successfully,but when I went back to “live” decoding,it was back to the CRC fail messages.

 

Is there any setting in the MultiPSK program I should enable,in order to receive correctly decoded messages?.Has anyone else experienced these CRC fail messages?

 

Allen

--

 

--

Attachments:

 

--

 

--

 

--

 

--

Attachments:

 

--

 



--


new modes page

mike agner
 

Recently I came across a page by F1ULT that was describing some of the modes MultiPSK uses.  As it went back to version 3, it didn't look all that up to date, so I wrote my own here...

https://wiki.radioreference.com/index.php/HF_and_LF_Modes_used_by_MultiPSK

Please feel free to pass along better websites for the modes listed. Remember, it covers any mode MulitPSK can handle below 30 Mhz.

Mike


Re: Introduction and HFDL question

Utility World (Hugh Stegman)
 

I had the same problem with Chrome. It worked fine until a recent update.  Now it interferes with the decode of many modes.  Firefox has been fine here. I just tested both browsers on the same HFDL signal, and my results were the same. Chrome was nearly all errors, but Firefox was 100%.

Edge uses the same rendering engine as Chrome, so it wouldn't surprise me if it has the same problems.

-hugh


On 5/19/2021 7:53 AM, Allen Watkin wrote:
Firefox installed and working fine with MultiPSK!

Many thanks

Allen

On Sun, 16 May 2021 at 21:27, Ary <udxf@...> wrote:
Note that Chrome and Edge browsers are causing sound problems preventing many decoders to decode the signal properly. Try Firefox instead. That works fine.
Recordings made with the recording options of the web sdrs while using Edge or Chrome are usually good.

Also note that the Firefox extension PopUpOFF may cause problems with Web-based SDRs. There are no problems if you don't use this.

73 Ary

Op 16-5-2021 om 19:59 uur schreef Patrick Lindecker <f6cte@...>:

>I tried the PC-HFDL program using the Kiwi too,and got all error messages.

It is possible that the SDR demodulation used by Kiwi SdR be of poor quality, certainly sufficient for slow modulations but not for quick modulations, and especially not for PSK modulation where you need to lock the phase and to deconvolute the signal according to the transmission channel.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 19:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Tried both 8 and 16 bits

No joy,still completely CRC error messages.

I’m sure it’s a problem with the Kiwi SDR.

I tried the PC-HFDL program using the Kiwi too,and got all error messages.

 

I switched to the Global Tuners site and it was much better,on both MultiPSK and PC-HFDL

 

Allen

 

On Sun, 16 May 2021 at 17:14, Patrick Lindecker <f6cte@...> wrote:

RR Allen, but I was speaking of “8 bits” on Multipsk (look at “Adjustments” on the menu bar at the top of the screen, then “AF levels+Sound card”).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 17:56


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Patrick

I only have 16 bit options on my sound card.

See photo

I’ve also tried adjusting the levels,no change.

No change with the slight frequency adjustment either

 

Allen

 

On Sun, 16 May 2021 at 16:45, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

I was thinking that for a virtual connection, as Stereo mix, the sampling frequency must be 48000 Hz strictly as it is not a physical connection. Also, once the “all errors phase” begun, try to change the audio level . or the frequency tuning (a bit) to determine the origin of the problem.

Are you in 16 bits or 8 bits? If in 16 bits, switch to 8 bits as there is the risk of switch around the bytes in 16 bits.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 16:13


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Scrub that...after 10 minutes of not too bad decodes,it’s back to the error messages

 

On Sun, 16 May 2021 at 14:50, Allen Watkin via groups.io <allenwatkin1=gmail.com@groups.io> wrote:

Hi Patrick

I think the problem lies with Kiwi SDR.

I changed to one of the Global Tuners radios,and I’m receiving decoded messages on my MultiPSK.

 

Allen

 

 

On Sun, 16 May 2021 at 13:36, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

>What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

This probably means that the signal has been distorted somewhere on the transmission of the AF signal. High speeds PSK modes as HFDL can’t bear much distortion (at least the ones implemented in Multipsk). Also check that the HFDL is not mixed with another signal (even at low level).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 13:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

No just using the stereo mix on my computer.I’ve tried adjusting the levels also.

What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

 

 

On Sun, 16 May 2021 at 11:47, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

How do you connect the SDR online to Multipsk?

Via a physical cable from sound card output to input?

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 12:37
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Hi Patrick

Done everything you suggested,no change.

I’m using an online SDR(Kiwi),but I’m also using that for decoding selcals(and I’m getting pretty much 100% success decoding those),so I do know why I’m getting the error messages.

 

I’ve tried tuning the SDR either side of the HFDL frequency (for 8942,I’ve tried 8941.95 through to 8942.05),no luck there.

 

See attached photo

 

Regards 

Allen

 

On Sun, 16 May 2021 at 09:24, Patrick Lindecker <f6cte@...> wrote:

Hello Allen

 

Could you check this (especially the sound level):

 

Calibration of the sound card (not for SdR interfaced with Multipsk)

It is strongly recommended to calibrate the sound-card: click on the
"Adjustments" menu button, then select the "Determination of the RX/TX
sound-card sampling frequencies
" option and push on the "Determination of
the 48 KHz RX sampling frequency (test on 3 minutes)
" button. At the end of
the test, click on "Return",
Now, if the speed is very close to 48000 Hz (let's say between 47950 and 48050), it's better to manually set it to 48000 Hz.

Sound level

About the sound level ("Level" indication in % at the top of the
screen): an AF level superior or equal to 10 % is OK. About 50 % is ideal
(but not critical). In case of very low AF level, select "16 bits" in the
"Determination of the RX/TX sound-card sampling frequencies" option
("Adjustments" menu button).

It is normal to receive from time to time “CRC fails”, but not always.

Note that it can also be a problem of tuning accuracy. If you are too much far away from the nominal frequency, the digital PLL does not lock.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 08:33
À : multipsk@groups.io
Objet : [multipsk] Introduction and HFDL question

 

Hi

My name is Allen,and I’ve just started using MultiPSK.It looks an impressive program too,lots of different modes I wasn’t even aware of.I listen to aero HF,and it’s spot on,practically 100% accurate in decoding selcal codes.I also want to use it to decode HFDL messages.

 

I’ve used the Charles Brain PC-HFDL program in the past,and that was always pretty accurate,but when I try to decode HFDL with MultiPSK,most of the time I get “CRC fail” messages.Seeing as the selcal codes are being decoded correctly,I don’t think it’s a problem with my sound card(I’m using the stereo mix on my PC).

 

Also,whilst watching a YouTube tutorial about HFDL,MultiPSK decoded the sound from the video successfully,but when I went back to “live” decoding,it was back to the CRC fail messages.

 

Is there any setting in the MultiPSK program I should enable,in order to receive correctly decoded messages?.Has anyone else experienced these CRC fail messages?

 

Allen

--

 

--

Attachments:

 

--

 

--

 

--

 

--

Attachments:



--





--




Re: Introduction and HFDL question

Allen Watkin
 

Firefox installed and working fine with MultiPSK!

Many thanks

Allen

On Sun, 16 May 2021 at 21:27, Ary <udxf@...> wrote:
Note that Chrome and Edge browsers are causing sound problems preventing many decoders to decode the signal properly. Try Firefox instead. That works fine.
Recordings made with the recording options of the web sdrs while using Edge or Chrome are usually good.

Also note that the Firefox extension PopUpOFF may cause problems with Web-based SDRs. There are no problems if you don't use this.

73 Ary

Op 16-5-2021 om 19:59 uur schreef Patrick Lindecker <f6cte@...>:

>I tried the PC-HFDL program using the Kiwi too,and got all error messages.

It is possible that the SDR demodulation used by Kiwi SdR be of poor quality, certainly sufficient for slow modulations but not for quick modulations, and especially not for PSK modulation where you need to lock the phase and to deconvolute the signal according to the transmission channel.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 19:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Tried both 8 and 16 bits

No joy,still completely CRC error messages.

I’m sure it’s a problem with the Kiwi SDR.

I tried the PC-HFDL program using the Kiwi too,and got all error messages.

 

I switched to the Global Tuners site and it was much better,on both MultiPSK and PC-HFDL

 

Allen

 

On Sun, 16 May 2021 at 17:14, Patrick Lindecker <f6cte@...> wrote:

RR Allen, but I was speaking of “8 bits” on Multipsk (look at “Adjustments” on the menu bar at the top of the screen, then “AF levels+Sound card”).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 17:56


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Patrick

I only have 16 bit options on my sound card.

See photo

I’ve also tried adjusting the levels,no change.

No change with the slight frequency adjustment either

 

Allen

 

On Sun, 16 May 2021 at 16:45, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

I was thinking that for a virtual connection, as Stereo mix, the sampling frequency must be 48000 Hz strictly as it is not a physical connection. Also, once the “all errors phase” begun, try to change the audio level . or the frequency tuning (a bit) to determine the origin of the problem.

Are you in 16 bits or 8 bits? If in 16 bits, switch to 8 bits as there is the risk of switch around the bytes in 16 bits.

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 16:13


À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Scrub that...after 10 minutes of not too bad decodes,it’s back to the error messages

 

On Sun, 16 May 2021 at 14:50, Allen Watkin via groups.io <allenwatkin1=gmail.com@groups.io> wrote:

Hi Patrick

I think the problem lies with Kiwi SDR.

I changed to one of the Global Tuners radios,and I’m receiving decoded messages on my MultiPSK.

 

Allen

 

 

On Sun, 16 May 2021 at 13:36, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

>What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

This probably means that the signal has been distorted somewhere on the transmission of the AF signal. High speeds PSK modes as HFDL can’t bear much distortion (at least the ones implemented in Multipsk). Also check that the HFDL is not mixed with another signal (even at low level).

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 13:24
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

No just using the stereo mix on my computer.I’ve tried adjusting the levels also.

What puzzles me is I can decode selcal codes perfectly using the sound card stereo mix option,but not HFDL

 

 

On Sun, 16 May 2021 at 11:47, Patrick Lindecker <f6cte@...> wrote:

Allen,

 

How do you connect the SDR online to Multipsk?

Via a physical cable from sound card output to input?

 

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 12:37
À : multipsk@groups.io
Objet : Re: [multipsk] Introduction and HFDL question

 

Hi Patrick

Done everything you suggested,no change.

I’m using an online SDR(Kiwi),but I’m also using that for decoding selcals(and I’m getting pretty much 100% success decoding those),so I do know why I’m getting the error messages.

 

I’ve tried tuning the SDR either side of the HFDL frequency (for 8942,I’ve tried 8941.95 through to 8942.05),no luck there.

 

See attached photo

 

Regards 

Allen

 

On Sun, 16 May 2021 at 09:24, Patrick Lindecker <f6cte@...> wrote:

Hello Allen

 

Could you check this (especially the sound level):

 

Calibration of the sound card (not for SdR interfaced with Multipsk)

It is strongly recommended to calibrate the sound-card: click on the
"Adjustments" menu button, then select the "Determination of the RX/TX
sound-card sampling frequencies
" option and push on the "Determination of
the 48 KHz RX sampling frequency (test on 3 minutes)
" button. At the end of
the test, click on "Return",
Now, if the speed is very close to 48000 Hz (let's say between 47950 and 48050), it's better to manually set it to 48000 Hz.

Sound level

About the sound level ("Level" indication in % at the top of the
screen): an AF level superior or equal to 10 % is OK. About 50 % is ideal
(but not critical). In case of very low AF level, select "16 bits" in the
"Determination of the RX/TX sound-card sampling frequencies" option
("Adjustments" menu button).

It is normal to receive from time to time “CRC fails”, but not always.

Note that it can also be a problem of tuning accuracy. If you are too much far away from the nominal frequency, the digital PLL does not lock.

73

Patrick

 

De : multipsk@groups.io [mailto:multipsk@groups.io] De la part de Allen Watkin
Envoyé : dimanche 16 mai 2021 08:33
À : multipsk@groups.io
Objet : [multipsk] Introduction and HFDL question

 

Hi

My name is Allen,and I’ve just started using MultiPSK.It looks an impressive program too,lots of different modes I wasn’t even aware of.I listen to aero HF,and it’s spot on,practically 100% accurate in decoding selcal codes.I also want to use it to decode HFDL messages.

 

I’ve used the Charles Brain PC-HFDL program in the past,and that was always pretty accurate,but when I try to decode HFDL with MultiPSK,most of the time I get “CRC fail” messages.Seeing as the selcal codes are being decoded correctly,I don’t think it’s a problem with my sound card(I’m using the stereo mix on my PC).

 

Also,whilst watching a YouTube tutorial about HFDL,MultiPSK decoded the sound from the video successfully,but when I went back to “live” decoding,it was back to the CRC fail messages.

 

Is there any setting in the MultiPSK program I should enable,in order to receive correctly decoded messages?.Has anyone else experienced these CRC fail messages?

 

Allen

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