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 vB6MKrjH030744 for ; Wed, 6 Dec 2017 23:20:56 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eMhxF-0004h4-06 for rs_out_1@blacksheep.org; Wed, 06 Dec 2017 22:14:13 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eMhwH-0004gp-IT for rsgb_lf_group@blacksheep.org; Wed, 06 Dec 2017 22:13:13 +0000 Received: from lethe.lipkowski.org ([151.80.54.59] helo=lipkowski.org) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eMhw9-0005tl-E0 for rsgb_lf_group@blacksheep.org; Wed, 06 Dec 2017 22:13:08 +0000 Received: from mailn.lipkowski.org (localhost [127.0.0.1]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id vB6MEpoI023837 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 6 Dec 2017 23:14:51 +0100 Received: from localhost (sq5bpf@localhost) by mailn.lipkowski.org (8.14.4/8.14.4/Submit) with ESMTP id vB6MEpbB023833 for ; Wed, 6 Dec 2017 23:14:51 +0100 X-Authentication-Warning: mailn.lipkowski.org: sq5bpf owned process doing -bs Date: Wed, 6 Dec 2017 23:14:50 +0100 (CET) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: References: <4d96a9d4-5f22-7650-872b-6344e9aea8e3@abelian.org> <5A19FF75.7080801@posteo.de> <5A1FFE7C.9050703@posteo.de> <5A226B0C.3080701@posteo.de> , <579355A36AEE9D4FA555C45D556003AB9AAB0EB9@servigilant.vigilant.local> <5A25C304.3050607@posteo.de> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 X-Spam-Score-sq5bpf: -2.899 () ALL_TRUSTED,BAYES_00,URIBL_BLOCKED X-Scanned-By: MIMEDefang 2.75 on 10.1.3.10 X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. 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Content preview: for comparison the second transmission with notching (using Paul's settings) and a noiseblanker (abt 8dB better S/N): found rank 0 ber 2.4792e-01 Eb/N0 9.9 M -1.090797186e+00 [CIAO] ps [ 28 -30 -30 0 0] carrier phase: -0.8 deg carrier Eb/N0: 11.8 dB carrier Es/N0: -4.47 dB carrier S/N: 25.36 dB in 34.7 uHz, -19.24 dB in 1Hz, -53.22 dB in 2.5kHz elapsed 588 [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 6bb858db23df2b82c4f5a8cb512b45b1 Subject: Re: VLF: First VLF detection DL > EA Content-Type: MULTIPART/MIXED; BOUNDARY="17435139-1322583569-1512598491=:734" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --17435139-1322583569-1512598491=:734 Content-Type: TEXT/PLAIN; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8BIT for comparison the second transmission with notching (using Paul's settings) and a noiseblanker (abt 8dB better S/N): found rank 0 ber 2.4792e-01 Eb/N0 9.9 M -1.090797186e+00 [CIAO] ps [ 28 -30 -30 0 0] carrier phase: -0.8 deg carrier Eb/N0: 11.8 dB carrier Es/N0: -4.47 dB carrier S/N: 25.36 dB in 34.7 uHz, -19.24 dB in 1Hz, -53.22 dB in 2.5kHz elapsed 588 VY 73 Jacek / SQ5BPF On Wed, 6 Dec 2017, Jacek Lipkowski wrote: > Date: Wed, 6 Dec 2017 22:38:33 +0100 (CET) > From: Jacek Lipkowski > To: rsgb_lf_group@blacksheep.org > Subject: Re: VLF: First VLF detection DL > EA > > decoded the 20171205 transmissions on 17470.1Hz, but without the > noiseblanker. the decoded messages were already published, so i'm including > them here too. > > 7:00 UTC transmission > > prep [ 0 0 0 0 0] > found rank 0 ber 2.8333e-01 Eb/N0 8.4 M -2.589702606e+00 [E] ps [ 0 0 > 0 0 0] > carrier phase: -6.0 deg > carrier Eb/N0: 10.3 dB > carrier Es/N0: -5.94 dB > carrier S/N: 17.86 dB in 34.7 uHz, -26.73 dB in 1Hz, -60.71 dB in 2.5kHz > elapsed 28 > > > 21:40 UTC transmission > > found rank 0 ber 3.6042e-01 Eb/N0 4.3 M -3.565651894e+00 [CIAO] ps [ 35 -90 > -90 -60 -60] > carrier phase: -8.8 deg > carrier Eb/N0: 3.4 dB > carrier Es/N0: -12.88 dB > carrier S/N: 16.94 dB in 34.7 uHz, -27.65 dB in 1Hz, -61.63 dB in 2.5kHz > elapsed 397 > > i will try it with additional notching and a noiseblanker and it that makes a > big difference i will add it to my 17470.1Hz grabber on the klubnl.pl page as > well > > > VY 73 > > Jacek / SQ5BPF > > > On Mon, 4 Dec 2017, DK7FC wrote: > >> Date: Mon, 04 Dec 2017 22:49:56 +0100 >> From: DK7FC >> Reply-To: rsgb_lf_group@blacksheep.org >> To: rsgb_lf_group@blacksheep.org >> Subject: Re: VLF: First VLF detection DL > EA >> >> Hi VLF, >> >> Tomorrow i'm going to gtry to pass a first EbNaut message over to EA5DOM. >> Here are the details: >> >> f = 17470.1000 Hz >> Start time: 05.Dec.2017  07:00:00 UTC >> Symbol period: 120 s >> Characters: 1 >> CRC bits: 6 >> Coding 8K19A >> Duration: 08:00 [hh:mm] >> Antenna current: 1 A >> >> 73, Stefan >> >> >> Am 02.12.2017 13:31, schrieb VIGILANT Luis Fernández: >> Hi VLF >> Congratulations Stefan and thank you all for the good information exchanges >> in the reflector >> >> It is all the effort at your side Stefan. I still didn't do the homework to >> decrease the local QRM, which is >> quite high as you can see in the 25KHz spectrogram. There is a very nasty >> noise which appeared just >> this last couple of days and affects exactly 17470Hz. It is random and runs >> for a couple hours. Can be seen >> as vertical noise lines in the lower spectrograms and is very noticeable in >> the 47uH spectrogram >> >> It is my first detection of Ham activity under LF so far. And there is a >> lot to improve to get same results >> at 8270Hz. A new Rx setup in a different (hopefully cleaner) QTH is in the >> "To Do" list ;-) >> >> 73 de Luis >> EA5DOM  >> >> _____________________________________________________________________________________________________________________ >> De: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] >> en nombre de Daniele Caccia >> [daniele.caccia74@gmail.com] >> Enviado: sábado, 2 de diciembre de 2017 12:07 >> Para: rsgb_lf_group@blacksheep.org >> Asunto: Re: VLF: First VLF detection DL > EA >> >> Dear VLF er >> >> Congratulations to all for the results obtained so far! >> >> Best regards from Daniele SWL I55387FI -ITALY- >> >> >>   >> >> >> 2017-12-02 10:30 GMT+01:00 Alberto Martinez : >> Congratulation Stefan and Luis! >> It´s weak but seeable. very good work. >> >> 73. >> Alberto-EA4GHB >> >> 2017-12-02 9:57 GMT+01:00 DK7FC : >> Hello VLF friends, >> >> This morning i looked on the EA5DOM VLF grabber and saw much better >> traces of the carrier on >> 17.4701 kHz. >> https://ea5dom.ure.es/grabber/index.html >> >> I find this is a valid one-way contact or carrier detection and i >> think it is the first time >> that this was done by amateurs between DL and EA. >> A distance of 1393 km, >> http://k7fry.com/grid/?qth=IM98XN&from=jn49ik00wd >> >> It looks like there is some QSB on that path, higher than observed a >> similar distance at 8270 >> Hz. >> We can now think about improvements and about a first message >> attempt... >> >> 73, Stefan >> >> >> >> > --17435139-1322583569-1512598491=:734--