Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id wA8M2AwS030980 for ; Thu, 8 Nov 2018 23:02:11 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gKsJv-0004XA-FV for rs_out_1@blacksheep.org; Thu, 08 Nov 2018 21:58:35 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gKsJu-0004X1-5j for rsgb_lf_group@blacksheep.org; Thu, 08 Nov 2018 21:58:34 +0000 Received: from rhcavuit04.kulnet.kuleuven.be ([2a02:2c40:0:c0::25:137]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gKsJs-0000iS-9w for rsgb_lf_group@blacksheep.org; Thu, 08 Nov 2018 21:58:33 +0000 X-KULeuven-Envelope-From: rik.strobbe@kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: 7C157120009.A5E33 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-smtps-1.cc.kuleuven.be (icts-p-smtps-1e.kulnet.kuleuven.be [134.58.240.33]) by rhcavuit04.kulnet.kuleuven.be (Postfix) with ESMTP id 7C157120009 for ; Thu, 8 Nov 2018 22:58:05 +0100 (CET) Received: from ICTS-S-EXMBX17.luna.kuleuven.be (icts-s-exmbx17.luna.kuleuven.be [10.112.11.48]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by icts-p-smtps-1.cc.kuleuven.be (Postfix) with ESMTPS id 6B68B40B4; Thu, 8 Nov 2018 22:58:05 +0100 (CET) Received: from ICTS-S-EXMBX27.luna.kuleuven.be (10.112.11.62) by ICTS-S-EXMBX17.luna.kuleuven.be (10.112.11.48) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 8 Nov 2018 22:58:05 +0100 Received: from ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::291a:cc4f:6953:698a]) by ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::291a:cc4f:6953:698a%25]) with mapi id 15.00.1395.000; Thu, 8 Nov 2018 22:58:05 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" , "rsgb_lf_group@yahoogroups.co.uk" Thread-Topic: AW: JT9-2 and JT9-5 mode application Thread-Index: AQHUd6mXGlRzs26Lqk2M7O3cP/CWt6VGWJcAgAASmXc= Date: Thu, 8 Nov 2018 21:58:05 +0000 Message-ID: <1541714284913.19524@kuleuven.be> References: <1541712573053.31739@kuleuven.be>,<030101d477ac$5794d940$06be8bc0$@gmx.de> In-Reply-To: <030101d477ac$5794d940$06be8bc0$@gmx.de> Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.112.50.1] MIME-Version: 1.0 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Oops, a typo in the filename. I renamed it on the server, the link should work now. My applologies! [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2a02:2c40:0:c0:0:0:25:137 listed in] [list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_REMOTE_IMAGE Message contains an external image X-Scan-Signature: 7117f452ff11af9bac782a916713f0d7 Subject: LF: Re: AW: JT9-2 and JT9-5 mode application Content-Type: multipart/alternative; boundary="_000_154171428491319524kuleuvenbe_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false --_000_154171428491319524kuleuvenbe_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Oops, a typo in the filename. I renamed it on the server, the link should work now. My applologies! 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org namens Joe Verzonden: donderdag 8 november 2018 22:45 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: AW: JT9-2 and JT9-5 mode application The requested URL /SlowJT9/SlowJT9_setup.exe was not found on this server. = 472khz.org Von: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksh= eep.org] Im Auftrag von Rik Strobbe Gesendet: Donnerstag, 8. November 2018 22:30 An: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk Betreff: LF: JT9-2 and JT9-5 mode application Dear all, a few months ago there was a short discussion about a "revival" of the slow= er JT9 modes such as JT9-2 and JT9-5. These modes existed in early versions of WSJT-X, and had the advantage of a= better S/N treshold level, at the cost of longer transmissions. But unfort= unately thse modes were abandoned in later WSJT-X version. As a result I raised this question in de WSJT-X developers group, but there= was no intention do implement these modes again, as the focus was more on = the (further) developing of new(er) modes. Having a closer look at the WSJT-X source code I noticed that the JT9 decod= ing was done in a separate executable and with some assistance of Joe, K1JT= , I managed to write an application that used this executable for decoding. As this executable only decodes JT9 signals, not JT9-2 and JT9-5, I had to = use a lttle trick: speeding up a JT9-2 recording by a factor 2 results in a= JT9 signal (at the double frequency) that can be fed to the JT9 decoder. T= he same can be done for JT9-5 (now speeding it up 5 times). Some tests showed that this way a JT9-2 signal could be copied at a 2.5dB b= etter S/N treshold compared to JT9(-1). Not completely the theoretical 3dB,= but 2.5dB can often be the difference between a failed or successful QSO. = JT9-5 hasn't been tested yet. All this was done "manually" and it was rather time consuming. So I decided to write an application that I named SlowJT9. It takes care of= all the conversions and frequency shifts. Besides JT9-2 and JT9-5 it also supports JT9(-1) for convenience reasons. Over the past weeks I tested the application in JT9 mode and after more tha= n a dozen QSO's I feel that it now time to release a beta version. Whoever is interested can download the SlowJT9 installation file at http://= 472khz.org/SlowJT9/SlowJT9_setup.exe. For now only a Windows version of SlowJT9 is available. But as the used IDE= has cross platform facilities it should be possible to support other opera= ting systems as well in the future. The aim of this beta version is: - To test if the application is working properly. - To find out if JT9-2 and/or JT9-5 have a sufficient S/N advantage over JT= 9(-1). - To find out if there is sufficient interest in using these modes to conti= nue the project. Therefore all comments, bug reports and suggestions are most welcome via th= e Blacksheep RSGB LF Reflector, Yahoo RSGB LF Group or directly at on7yd@st= robbe.org. 73, Rik ON7YD - OR7T [https://ipmcdn.avast.com/images/icons/icon-envelope-tick-green-avg-v1.png]= Virenfrei. www.avg.com --_000_154171428491319524kuleuvenbe_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Oops, a typo in the filename. 

I renamed it on the server, the link should work now.


My applologies!


73, Rik  ON7YD - OR7T


Van: owner-rsgb_lf_group@bl= acksheep.org <owner-rsgb_lf_group@blacksheep.org> namens Joe <df2j= p@gmx.de>
Verzonden: donderdag 8 november 2018 22:45
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: AW: JT9-2 and JT9-5 mode application
 

The requ= ested URL /SlowJT9/SlowJT9_setup.exe was not found on this server. 472khz.org

 

Von: owner-r= sgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] Im Auftrag von Rik Strobbe
Gesendet: Donnerstag, 8. November 2018 22:30
An: rsgb_lf_group@blacksheep.org; rsgb_lf_group@yahoogroups.co.uk Betreff: LF: JT9-2 and JT9-5 mode application

 

Dear all,

 

a few months ago there was a short discussion = about a "revival" of the slower JT9 modes such as JT9-2 and JT9-5= .

These modes existed in early versions of WSJT-= X, and had the advantage of a better S/N treshold level, at the cost o= f longer transmissions. But unfortunately thse modes were abandoned in later WSJT-X version.

As a result I raised this question in de WSJT-= X developers group, but there was no intention do implement these modes aga= in, as the focus was more on the (further) developing of&nbs= p;new(er) modes.

Having a closer look at the WSJT-X source code= I noticed that the JT9 decoding was done in a separate executable and= with some assistance of Joe, K1JT, I managed to write an application that used this executable for decoding.

As this executable only decodes JT9 signals, n= ot JT9-2 and JT9-5, I had to use a lttle trick: speeding up a JT9-2 re= cording by a factor 2 results in a JT9 signal (at the double frequency) that can be fed to the JT9 decoder. The same can be done for JT= 9-5 (now speeding it up 5 times).

Some tests showed that this way a JT9-2 signal= could be copied at a 2.5dB better S/N treshold compared to JT9(-1). Not co= mpletely the theoretical 3dB, but 2.5dB can often be the difference between a failed or successful QSO. JT9-5 hasn't been tested ye= t.

All this was done "manually" and it = was rather time consuming.

So I decided to write an application that I na= med SlowJT9. It takes care of all the conversions and frequency shifts= .

Besides JT9-2 and JT9-5 it also supports JT9(-= 1) for convenience reasons.

Over the past weeks I tested the application i= n JT9 mode and after more than a dozen QSO's I feel that it now t= ime to release a beta version.

 

Whoever is interested can download the SlowJT9=  installation file at http://472khz.org/SlowJT9/SlowJT9_setup.exe.

 

For now only a = Windows version of SlowJT9 is available. But as the used IDE has = cross platform facilities it should be possible to support other operating systems as well in the future.

The aim of this beta versi= on is:
- To test if the application is working properly.
- To find out if JT9-2 and/or JT9-5 have a sufficient S/N advantage ov= er JT9(-1).
- To find out if there is sufficient interest in using these modes to = continue the project.
Therefore all comments, bug reports and suggestions are most welcome via th= e Blacksheep RSGB LF Reflector, Yahoo RSGB LF Group or directly at on7yd@strobbe.org.

 

73, Rik  ON7YD - OR7T=

 

 

 

 

 


3D"" Virenfrei. www.avg.com
=
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