Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=0.5 required=5.0 tests=FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,HTML_MESSAGE,RCVD_IN_SORBS_SPAM, T_DKIM_INVALID,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id v7R9Ex38027671 for ; Sun, 27 Aug 2017 11:15:00 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dltVs-0003p4-9e for rs_out_1@blacksheep.org; Sun, 27 Aug 2017 10:05:48 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dltVr-0003ov-Co for rsgb_lf_group@blacksheep.org; Sun, 27 Aug 2017 10:05:47 +0100 Received: from omr-a009e.mx.aol.com ([204.29.186.49]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.89) (envelope-from ) id 1dltVn-0007Kq-EM for rsgb_lf_group@blacksheep.org; Sun, 27 Aug 2017 10:05:46 +0100 Received: from mtaomg-mcb02.mx.aol.com (mtaomg-mcb02.mx.aol.com [172.26.50.176]) by omr-a009e.mx.aol.com (Outbound Mail Relay) with ESMTP id 03D02380008F for ; Sun, 27 Aug 2017 05:05:41 -0400 (EDT) Received: from core-acx05h.mail.aol.com (core-acx05.mail.aol.com [10.76.14.46]) by mtaomg-mcb02.mx.aol.com (OMAG/Core Interface) with ESMTP id B122C38000085 for ; Sun, 27 Aug 2017 05:05:40 -0400 (EDT) Received: from 188.192.44.165 by webjas-vaa018.srv.aolmail.net (10.96.33.21) with HTTP (WebMailUI); Sun, 27 Aug 2017 05:05:39 -0400 Date: Sun, 27 Aug 2017 05:05:40 -0400 From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-Id: <15e22f07cc0-c10-16e0a@webjas-vaa018.srv.aolmail.net> In-Reply-To: <59A066BA.7060608@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: 5800.7501/120369 X-AOL-VSS-CODE: clean DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1503824741; bh=OYLAjiW25x9MDqa+Uhwy894BWUtCWzZTM+TrAHHquUQ=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=GmXaPc+rYRKX2FsPP+/VFHEll8C6EeGcxol5Q+8YwavrNd4FRbujXAQ8GDmOq1nLJ jboUO58ndaE0qn1ecBt2I+r+MdIDg5LJKOW+VdTsMsNpg5Wq/W0yvC7zZMdktxSg8R ErKx9Lc6nFbo6acOJfcSgR9ja+I+r1ifUWqd5pm0= x-aol-sid: 3039ac1a32b059a28b647845 X-Scan-Signature: e51657317b06d9cbe905ec682fad6602 Subject: Re: VLF: Carrier on 4470.005 Hz! - EbNaut test Content-Type: multipart/mixed; boundary="----=_Part_111936_2030192660.1503824739520" 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 2.75 Status: O X-Status: X-Keywords: X-UID: 12469 ------=_Part_111936_2030192660.1503824739520 Content-Type: multipart/alternative; boundary="----=_Part_111935_599068395.1503824739520" ------=_Part_111935_599068395.1503824739520 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable No correct results from the 25th and 26th either. I didn't try more stackin= g because adding in noisy days seemed to make things worse rather than bett= er. The best decode was the one from the 23rd alone, EW antenna (log attach= ed). Best 73, Markus PS1: Under Win-10, Windows Explorer apparently crashes when trying to show = details of a wav file with "zero" nominal samplerate. =20 PS2: Your receiver on the tree seems to have gone off yesterday night. -----Urspr=C3=BCngliche Mitteilung-----=20 Von: DK7FC An: rsgb_lf_group Verschickt: Fr, 25. Aug 2017 20:06 Betreff: Re: VLF: Carrier on 4470.005 Hz! - EbNaut test Am 25.08.2017 15:25, schrieb Markus Vester:=20 Hi Stefan, no decodes from yesterday Aug, 24, likely due to the much increased QRN al= ready in the afternoon. I also tried to combine 23rd and 24th and still fou= nd the correct decode in the list, but with deteriorated SNR. Well at least the decode has a 0.3 dB higher Eb/N0 and the ref phase is co= nstant now. This is an improvement. Again it was a very noisy day here. But soon that time will be gone! In a = few weeks i don't expect local thunderstorms any more, which is very releva= nt on that 67 km band. 73, Stefan ------=_Part_111935_599068395.1503824739520 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
No correct results from the 25th and 26th either. I didn= 't try more stacking because adding in noisy days seemed to make thing= s worse rather than better. The best decode was the one from the = 23rd alone, EW antenna (log attached).

Best 73,
Markus
PS1: Under Win-10, Windows Explorer apparently crashes when trying to sho= w details of a wav file with "zero" nominal samplerate.  PS2: Your receiver on the tree seems to have gone off yesterday night= .

-----Urspr=C3=BCngliche Mitteilung-----
Von: DK7FC <selberd= enken@posteo.de>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org&g= t;
Verschickt: Fr, 25. Aug 2017 20:06
Betreff: Re: VLF: Carrier on 44= 70.005 Hz! - EbNaut test



Am 25.08.2017 15:25, schrieb Markus Vester:
Hi Stefan,

no decodes from yesterday Aug, 24, likely due to the much increased QRN already in the afternoon. I also tried to combine 23rd and 24th and still found the correct decode in the list, but with deteriorated= SNR.

Well at least the decode has a 0.3 dB higher Eb/N0 and the ref phase is constant now. This is an improvement.
Again it was a very noisy day here. But soon that time will be gone! In a few weeks i don't expect local thunderstorms any more, which is very relevant on that 67 km band.

73, Stefan

------=_Part_111935_599068395.1503824739520-- ------=_Part_111936_2030192660.1503824739520 Content-Type: text/plain; charset=us-ascii; name=EW08230531-log.txt Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=EW08230531-log.txt ebnaut-rx V0.7 input file EW08230531.wav sample rate 0.152413 per second rx frequency 4470 file start time 2017-08-22 14:35:59.540 polynomial 16K21A crc size 6 number of chars 5 block size 36 symbol period 60.000 number of symbols 896 list length 100 start offset 48266.600 freq offset 0.005000 cores 2 skipped 48263.757894 seconds to start initial reference phase 35.9 --------------------------------------------- found GGY.M list rank 19 reference phase 0 0 0 0 carrier S/N 13.13 dB in 18.6 uHz, -34.17 dB in 1Hz, -68.15 dB in 2.5kHz carrier Es/N0 -16.39 dB carrier Eb/N0 -1.42 dB info bit period 1886.32 seconds symbol error rate 379/896 = 42.299 % Es/N0 from symbol errors -17.2 dB Eb/N0 from symbol errors -2.2 dB Shannon capacity 2.0 bits/hour Shannon efficiency 97.2 % symbols file EW08230531-symbols.csv elapsed 13 seconds --------------------------------------------- found PEACE list rank 0 reference phase -150 -150 -150 -150 carrier S/N 14.87 dB in 18.6 uHz, -32.43 dB in 1Hz, -66.41 dB in 2.5kHz carrier Es/N0 -14.65 dB carrier Eb/N0 0.32 dB info bit period 1886.32 seconds symbol error rate 353/896 = 39.397 % Es/N0 from symbol errors -14.4 dB Eb/N0 from symbol errors 0.6 dB Shannon capacity 2.9 bits/hour Shannon efficiency 65.4 % symbols file EW08230531-symbols.csv elapsed 44 seconds --------------------------------------------- found PEACE list rank 0 reference phase -120 -120 -150 -150 carrier S/N 14.90 dB in 18.6 uHz, -32.41 dB in 1Hz, -66.39 dB in 2.5kHz carrier Es/N0 -14.63 dB carrier Eb/N0 0.35 dB info bit period 1886.32 seconds symbol error rate 351/896 = 39.174 % Es/N0 from symbol errors -14.2 dB Eb/N0 from symbol errors 0.8 dB Shannon capacity 2.9 bits/hour Shannon efficiency 65.1 % symbols file EW08230531-symbols.csv elapsed 168 seconds ------=_Part_111936_2030192660.1503824739520--