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 v969EdPR010628 for ; Fri, 6 Oct 2017 11:14:40 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e0OVI-0000pE-VJ for rs_out_1@blacksheep.org; Fri, 06 Oct 2017 10:01:08 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e0OVI-0000p5-1v for rsgb_lf_group@blacksheep.org; Fri, 06 Oct 2017 10:01:08 +0100 Received: from omr-a002e.mx.aol.com ([204.29.186.56]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1e0OVD-0005sU-Su for rsgb_lf_group@blacksheep.org; Fri, 06 Oct 2017 10:01:06 +0100 Received: from mtaomg-aab01.mx.aol.com (mtaomg-aab01.mx.aol.com [172.26.126.207]) by omr-a002e.mx.aol.com (Outbound Mail Relay) with ESMTP id AF91738000A8 for ; Fri, 6 Oct 2017 05:00:59 -0400 (EDT) Received: from core-ace04c.mail.aol.com (core-ace04.mail.aol.com [172.27.23.4]) by mtaomg-aab01.mx.aol.com (OMAG/Core Interface) with ESMTP id 4250338000081 for ; Fri, 6 Oct 2017 05:00:59 -0400 (EDT) Received: from 188.192.44.165 by webjas-vaa166.srv.aolmail.net (10.96.33.169) with HTTP (WebMailUI); Fri, 06 Oct 2017 05:00:57 -0400 Date: Fri, 6 Oct 2017 05:00:58 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15ef0ea8fc2-c0c-1377d@webjas-vaa166.srv.aolmail.net> In-Reply-To: <59D4AEF0.8070001@posteo.de> MIME-Version: 1.0 X-MB-Message-Source: WebUI X-MB-Message-Type: User X-Mailer: JAS STD X-Originating-IP: [188.192.44.165] x-aol-global-disposition: G X-AOL-VSS-INFO: 5800.7501/121821 X-AOL-VSS-CODE: clean DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1507280459; bh=ENqK+9lU8ore6MOmuy40mrrh/wJn+QVIz23+fthX+bM=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=1OajlGMnzh0HIn5wHaWLvIlbO5WFutoQwZ6Jxy4xY55hUAm2sJX1FKlknO7vkwdIP OwaTeaRRr6cJgV5cLb5g+OdBMKEV8XVgQa+CDC8ZCrdyX1V0Cmj8yoqE/xdlpeGAjp mJtDixi1vO1S630zcodbD8Z8LOCAdSo/wFN/5FIM= x-aol-sid: 3039ac1a7ecf59d7464b7907 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. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Unfortunately the 1-character message was not decoded correctly from DL0AO data. The prior carrier had been well visible during the day, but completely drowned in nighttime QRN. Would you perhaps like to try another short EbNaut message in daylight? [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: a28b1b2438ad79e62076fe9eb1ceecab Subject: Re: VLF: 300 mA on 6470 Hz - 1 char not decoded at DL0AO Content-Type: multipart/mixed; boundary="----=_Part_98914_63477215.1507280457666" 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=HTML_MESSAGE 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 ------=_Part_98914_63477215.1507280457666 Content-Type: multipart/alternative; boundary="----=_Part_98913_1711864922.1507280457666" ------=_Part_98913_1711864922.1507280457666 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Unfortunately the 1-character message was not decoded correctly from DL0AO = data. The prior carrier had been well visible during the day, but completel= y drowned in nighttime QRN. Would you perhaps like to try another short EbN= aut message in daylight? Best 73, Markus -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Mi, 4. Okt 2017 11:52 Betreff: Re: VLF: 300 mA on 6470 Hz Hi Paul,=20 Am 04.10.2017 11:07, schrieb Paul Nicholson:=20 You may as well use 8K19A or even 4K15A.=20 If you look at the big table at the end of=20 http://abelian.org/ebnaut/ops.shtml=20 you can see there's no further improvement in success=20 rate for 6 bit payloads (1 char plus zero CRC =3D 6 bits).=20 The reason appears to be the payload is simply not long=20 enough to make full use of the longer constraint lengths.=20 OK, so i'm changing to: f =3D 6470.005000 Hz Start time: 04.October.2017 17:00:00 UTC Symbol period: 240 s Characters: 1 CRC bits: 0 Coding 8K19A Duration: 12h48min Antenna current: 300 mA For some reason, the signal last night was about 6dB weaker.=20 Interesting. And for some reason, the signal was much stronger last night a= t SQ5BPF. Did you see it? What could be the reason? Just the noise blanker = / background QRN? The message will give you/us and 3rd impression about SNR and phase. A 10 = deg phase variation between last night and the night before seems already t= o be quite high, relative to what we observed at 8270. Maybe we will learn = a bit about propagation by that. The 1 char message is for Jacek mainly. The chance for a decode will be hi= gh i think. Then i thought i try another (daily) 12 char message for Jacek = before we can try the 100 char message. We've already done quite much on th= at 46 km band, so i wouldn't spend to much time there, 2 weeks maybe. Then = QSY to 58 km where we can stretch the record list a bit by transferring 100= chars to you Paul. 73, Stefan ------=_Part_98913_1711864922.1507280457666 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
Unfortunately the 1-character message was not decoded co= rrectly from DL0AO data. The prior carrier had been well visible during the= day, but completely drowned in nighttime QRN. Would you perhaps like to tr= y another short EbNaut message in daylight?
Best 73,Markus



-----Urspr=C3=BCngliche Mitteilung-----
Von: DK= 7FC <selberdenken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@b= lacksheep.org>
Verschickt: Mi, 4. Okt 2017 11:52
Betreff: Re: VLF:= 300 mA on 6470 Hz

Hi Paul,

Am 04.10.2017 11:07, schrieb Paul Nicholson:
You may as well use 8K19A or even 4K15A.

If you look at the big table at the end of

 http://abe= lian.org/ebnaut/ops.shtml

you can see there's no further improvement in success
rate for 6 bit payloads (1 char plus zero CRC =3D 6 bits).

The reason appears to be the payload is simply not long
enough to make full use of the longer constraint lengths.

OK, so i'm changing to:

f =3D 6470.005000 Hz
Start time: 04.October.2017  17:00:00 UTC
Symbol period: 240 s
Characters: 1
CRC bits: 0
Coding 8K19A
Duration: 12h48min
Antenna current: 300 mA


For some reason, the signal last night was= about 6dB weaker.
Interesting. And for some reason, the signal was much stronger last night at SQ5BPF. Did you see it? What could be the reason? Just the noise blanker / background QRN?
The message will give you/us and 3rd impression about SNR and phase. A 10 deg phase variation between last night and the night before seems already to be quite high, relative to what we observed at 8270. Maybe we will learn a bit about propagation by that.
The 1 char message is for Jacek mainly. The chance for a decode will be high i think. Then i thought i try another (daily) 12 char message for Jacek before we can try the 100 char message. We've already done quite much on that 46 km band, so i wouldn't spend to much time there, 2 weeks maybe. Then QSY to 58 km where we can stretch the record list a bit by transferring 100 chars to you Paul.

73, Stefan


------=_Part_98913_1711864922.1507280457666-- ------=_Part_98914_63477215.1507280457666 Content-Type: text/plain; charset=us-ascii; name=dl0ao_W10050041-log_false.txt Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=dl0ao_W10050041-log_false.txt ebnaut-rx V0.7a input file dl0ao_W10050041.wav sample rate 0.152413 per second rx frequency 6470 file start time 2017-10-04 09:46:01.840 polynomial 8K19A crc size 0 number of chars 1 block size 6 symbol period 240.000 number of symbols 192 list length 200 start offset 26064.000 freq offset 0.005000 cores 1 skipped 26060.854589 seconds to start initial reference phase -65.7 --------------------------------------------- found Z list rank 0 reference phase 0 0 0 0 carrier S/N 5.12 dB in 21.7 uHz, -41.52 dB in 1Hz, -75.50 dB in 2.5kHz carrier Es/N0 -17.72 dB carrier Eb/N0 -2.44 dB info bit period 8084.21 seconds symbol error rate 82/192 = 42.708 % Es/N0 from symbol errors -17.7 dB Eb/N0 from symbol errors -2.4 dB Shannon capacity 0.4 bits/hour Shannon efficiency 122.6 % symbols file dl0ao_W10050041-symbols.csv elapsed 0 seconds --------------------------------------------- found , list rank 0 reference phase -150 -150 -150 -150 carrier S/N 5.93 dB in 21.7 uHz, -40.71 dB in 1Hz, -74.69 dB in 2.5kHz carrier Es/N0 -16.91 dB carrier Eb/N0 -1.63 dB info bit period 8084.21 seconds symbol error rate 84/192 = 43.750 % Es/N0 from symbol errors -19.0 dB Eb/N0 from symbol errors -3.7 dB Shannon capacity 0.4 bits/hour Shannon efficiency 102.0 % symbols file dl0ao_W10050041-symbols.csv elapsed 1 seconds --------------------------------------------- found , list rank 0 reference phase 180 180 -150 -150 carrier S/N 6.94 dB in 21.7 uHz, -39.69 dB in 1Hz, -73.67 dB in 2.5kHz carrier Es/N0 -15.89 dB carrier Eb/N0 -0.62 dB info bit period 8084.21 seconds symbol error rate 78/192 = 40.625 % Es/N0 from symbol errors -15.5 dB Eb/N0 from symbol errors -0.2 dB Shannon capacity 0.6 bits/hour Shannon efficiency 80.9 % symbols file dl0ao_W10050041-symbols.csv elapsed 7 seconds --------------------------------------------- found , list rank 0 reference phase -150 -150 -120 -120 carrier S/N 6.94 dB in 21.7 uHz, -39.69 dB in 1Hz, -73.67 dB in 2.5kHz carrier Es/N0 -15.89 dB carrier Eb/N0 -0.62 dB info bit period 8084.21 seconds symbol error rate 84/192 = 43.750 % Es/N0 from symbol errors -19.0 dB Eb/N0 from symbol errors -3.7 dB Shannon capacity 0.6 bits/hour Shannon efficiency 80.9 % symbols file dl0ao_W10050041-symbols.csv elapsed 8 seconds --------------------------------------------- found , list rank 0 reference phase -150 180 -120 -150 carrier S/N 7.48 dB in 21.7 uHz, -39.15 dB in 1Hz, -73.13 dB in 2.5kHz carrier Es/N0 -15.35 dB carrier Eb/N0 -0.08 dB info bit period 8084.21 seconds symbol error rate 81/192 = 42.188 % Es/N0 from symbol errors -17.1 dB Eb/N0 from symbol errors -1.8 dB Shannon capacity 0.6 bits/hour Shannon efficiency 71.6 % symbols file dl0ao_W10050041-symbols.csv elapsed 17 seconds ------=_Part_98914_63477215.1507280457666 Content-Type: text/plain; charset=us-ascii; name=dl0ao_EW10050044-log_false.txt Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=dl0ao_EW10050044-log_false.txt ebnaut-rx V0.7a input file dl0ao_EW10050044.wav sample rate 0.152413 per second rx frequency 6470 file start time 2017-10-04 09:48:32.340 polynomial 8K19A crc size 0 number of chars 1 block size 6 symbol period 240.000 number of symbols 192 list length 200 start offset 25914.000 freq offset 0.005000 cores 1 skipped 25916.509473 seconds to start initial reference phase -69.6 --------------------------------------------- found Y list rank 0 reference phase 0 0 0 0 carrier S/N 2.39 dB in 21.7 uHz, -44.25 dB in 1Hz, -78.23 dB in 2.5kHz carrier Es/N0 -20.45 dB carrier Eb/N0 -5.17 dB info bit period 8084.21 seconds symbol error rate 89/192 = 46.354 % Es/N0 from symbol errors -23.7 dB Eb/N0 from symbol errors -8.4 dB Shannon capacity 0.2 bits/hour Shannon efficiency 229.0 % symbols file dl0ao_EW10050044-symbols.csv elapsed 1 seconds --------------------------------------------- found 8 list rank 0 reference phase 180 180 180 180 carrier S/N 6.15 dB in 21.7 uHz, -40.48 dB in 1Hz, -74.46 dB in 2.5kHz carrier Es/N0 -16.68 dB carrier Eb/N0 -1.41 dB info bit period 8084.21 seconds symbol error rate 81/192 = 42.188 % Es/N0 from symbol errors -17.1 dB Eb/N0 from symbol errors -1.8 dB Shannon capacity 0.5 bits/hour Shannon efficiency 96.8 % symbols file dl0ao_EW10050044-symbols.csv elapsed 1 seconds --------------------------------------------- found 0 list rank 0 reference phase 60 60 60 60 carrier S/N 7.75 dB in 21.7 uHz, -38.88 dB in 1Hz, -72.86 dB in 2.5kHz carrier Es/N0 -15.08 dB carrier Eb/N0 0.19 dB info bit period 8084.21 seconds symbol error rate 88/192 = 45.833 % Es/N0 from symbol errors -22.6 dB Eb/N0 from symbol errors -7.3 dB Shannon capacity 0.7 bits/hour Shannon efficiency 67.3 % symbols file dl0ao_EW10050044-symbols.csv elapsed 2 seconds --------------------------------------------- found 0 list rank 0 reference phase 90 90 90 90 carrier S/N 7.75 dB in 21.7 uHz, -38.88 dB in 1Hz, -72.86 dB in 2.5kHz carrier Es/N0 -15.08 dB carrier Eb/N0 0.19 dB info bit period 8084.21 seconds symbol error rate 73/192 = 38.021 % Es/N0 from symbol errors -13.3 dB Eb/N0 from symbol errors 2.0 dB Shannon capacity 0.7 bits/hour Shannon efficiency 67.3 % symbols file dl0ao_EW10050044-symbols.csv elapsed 4 seconds --------------------------------------------- found 0 list rank 0 reference phase 90 60 90 60 carrier S/N 7.98 dB in 21.7 uHz, -38.66 dB in 1Hz, -72.64 dB in 2.5kHz carrier Es/N0 -14.85 dB carrier Eb/N0 0.42 dB info bit period 8084.21 seconds symbol error rate 83/192 = 43.229 % Es/N0 from symbol errors -18.3 dB Eb/N0 from symbol errors -3.0 dB Shannon capacity 0.7 bits/hour Shannon efficiency 64.0 % symbols file dl0ao_EW10050044-symbols.csv elapsed 13 seconds --------------------------------------------- found 0 list rank 0 reference phase 120 90 90 60 carrier S/N 8.23 dB in 21.7 uHz, -38.41 dB in 1Hz, -72.39 dB in 2.5kHz carrier Es/N0 -14.61 dB carrier Eb/N0 0.67 dB info bit period 8084.21 seconds symbol error rate 78/192 = 40.625 % Es/N0 from symbol errors -15.5 dB Eb/N0 from symbol errors -0.2 dB Shannon capacity 0.7 bits/hour Shannon efficiency 60.5 % symbols file dl0ao_EW10050044-symbols.csv elapsed 16 seconds ------=_Part_98914_63477215.1507280457666--