Return-Path: X-Spam-DCC: paranoid 1480; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u92JnnqY017989 for ; Sun, 2 Oct 2016 21:49:50 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bqmi5-0007BI-3y for rs_out_1@blacksheep.org; Sun, 02 Oct 2016 20:46:05 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bqmi4-0007B9-EP for rsgb_lf_group@blacksheep.org; Sun, 02 Oct 2016 20:46:04 +0100 Received: from smtp09.smtpout.orange.fr ([80.12.242.131] helo=smtp.smtpout.orange.fr) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.87) (envelope-from ) id 1bqmi2-0002Kf-Sv for rsgb_lf_group@blacksheep.org; Sun, 02 Oct 2016 20:46:03 +0100 Received: from xps.home ([82.121.163.37]) by mwinf5d18 with ME id qjly1t00X0ojUSy03jlzJx; Sun, 02 Oct 2016 21:45:59 +0200 X-ME-Helo: xps.home X-ME-Date: Sun, 02 Oct 2016 21:45:59 +0200 X-ME-IP: 82.121.163.37 Date: Sun, 2 Oct 2016 21:45:55 +0200 From: Michel Brunel X-Priority: 3 (Normal) Message-ID: <113236679.20161002214555@mterrier.net> To: rsgb_lf_group@blacksheep.org In-Reply-To: References: <924779203.20160929001259@mterrier.net> <15776c6e48a-454b-4f41@webprd-m19.mail.aol.com> <1044464829.20160930003913@mterrier.net> MIME-Version: 1.0 X-Scan-Signature: 07fee8d4a4e8ea80934a0e0aaa44e788 Subject: Re: LF: F5WK EbNaut Content-Type: multipart/alternative; boundary="----------06101F04D02E80849" 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 X-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8921 ------------06101F04D02E80849 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi Markus, I agree that the 3 second time offset comes from my side. Now I have to und= erstand the reason and make the appropriate correction. I returned home, and will concentrate on that problem. 73, Michel - f5wk Le vendredi 30 septembre 2016 =C3=A0 10:39:05, Markusvester =C3=A9crivait : =20 =20 Michel, =20 Hi Michel, =20 I believe that RX timing was correct. The clock of the LF grabber PC is con= trolled by an NTP Client, and my Loran-C grabber is running on the same mac= hine. If NTP had been off by more than a second, the Loran monitor would ha= ve jumped to the wrong 1pps pulse and lost the Loran traces. =20 =20 Best 73, Markus =20 Von: Michel Brunel Gesendet: Freitag, 30. September 2016 00:41 An: rsgb_lf_group@blacksheep.org Betreff: Re: LF: F5WK EbNaut =20 Hi Markus, Does this 3second time offset come from my side ? No intentional change to= blame ! Could be a glitch with the VK16E GPS receiver - used only for NMEA, not for= the GPSDO. 73, Michel - f5wk Le jeudi 29 septembre 2016 =C3=A0 18:28:48, Markus =C3=A9crivait : Hi Michel, after I realized that the time offset was now 3 seconds I got a few more de= codes. Apparently SNR and condx were a bit weaker than the night before. 2016-09-28 "F5WK IN99EF" start symbol carrier df UT EbN0 EbN0 mHz 19:00:03 12.2 14.2 -1 19:30:03 14.7 17.9 -1 20:00:03 1.1 4.3 -1 20:30 (rx interruption) 21:00:03 12.7 14.7 0 21:30:03 13.5 16.6 -1 22:00:03 10.7 13.4 -1 Yes the undefined state of a divider before the PA can cause problems for c= oherent EbNaut (or Opera) transmissions. With the DDS, you could try to gra= dually advance the phase in 64 small steps to accumulate 360=C2=B0. Best 73, Markus --=20 =E2=80=A6 -- ------------06101F04D02E80849 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Re: LF: F5WK EbNaut Hi Markus,

I agree that the 3 second time offset comes from my side. Now I have to und= erstand the reason and make the appropriate correction.
I returned home, and will concentrate on that problem.

73,

Michel - f5wk

Le vendredi 30 septembre 2016 =C3=A0 10:39:05, Markusvester =C3=A9crivait :=


 
 
Michel,
 
Hi Michel,
 
I believe that RX timing was correct. The clock of the LF grabber PC is con= trolled by an NTP Client, and my Loran-C grabber is running on the same mac= hine. If NTP had been off by more than a second, the Loran monitor would ha= ve jumped to the wrong 1pps pulse and lost the Loran traces.  
 
Best 73,
Markus
 
Von: <= /span>Michel Brunel
Gesendet: = Freitag, 30. September 2016 00:41
An: rsgb_lf_group@blacksheep.org=
Betreff: <= /b>Re: LF: F5WK EbNaut
 
Hi  Markus,

Does this 3second time offset come from my side ?  No intentional chan= ge to blame !
Could be a glitch with the VK16E GPS receiver - used only for NMEA, not for= the GPSDO.

73,
Michel - f5wk

Le jeudi 29 septembre 2016 =C3=A0 18:28:48, Markus =C3=A9crivait :

 Hi Michel,

after I realized that the time offset was now 3 seconds I got a few more de= codes. Apparently SNR and condx were a bit weaker than the night before.

2016-09-28  "F5WK IN99EF"

start    symbol carrier df
 UT       EbN0   EbN0   mHz

19:00:03  12.2   14.2   -1
19:30:03  14.7   17.9   -1
20:00:03   1.1    4.3   -1
20:30    (rx interruption)
21:00:03  12.7   14.7    0
21:30:03  13.5   16.6   -1
22:00:03  10.7   13.4   -1

Yes the undefined state of a divider before the PA can cause problems for c= oherent EbNaut (or Opera) transmissions. With the DDS, you could try to gra= dually advance the phase in 64 small steps to accumulate 360=C2=B0.

Best 73,
Markus



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