Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham 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+deb8u1) with ESMTP id v229LjqA023258 for ; Thu, 2 Mar 2017 10:21:46 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cjMng-0003pl-T4 for rs_out_1@blacksheep.org; Thu, 02 Mar 2017 09:13:28 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cjMnf-0003pc-VR for rsgb_lf_group@blacksheep.org; Thu, 02 Mar 2017 09:13:27 +0000 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cjMnc-0002PA-OX for rsgb_lf_group@blacksheep.org; Thu, 02 Mar 2017 09:13:26 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id AC8F5209C2 for ; Thu, 2 Mar 2017 10:13:22 +0100 (CET) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3vYmnZ32l4z108s for ; Thu, 2 Mar 2017 10:13:22 +0100 (CET) Message-ID: <58B7E232.4040704@posteo.de> Date: Thu, 02 Mar 2017 10:13:22 +0100 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <58B4313A.80504@posteo.de> <1488212089.755764551@f404.i.mail.ru> <58B5A2E6.2080603@posteo.de> <101f98a0-a0bb-9a6f-d0df-c988fae38a0c@abelian.org> In-Reply-To: <101f98a0-a0bb-9a6f-d0df-c988fae38a0c@abelian.org> X-Scan-Signature: 3b8620872b19e25fb6f4dfaf1256edc3 Subject: Re: VLF: A weekend for newcomers and advanced newcomers... Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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: RO X-Status: A X-Keywords: X-UID: 10761 Hi Paul, Great work, as usual. Thanks. -2.5 dB, that agrees with the Eb/N0 value of the 4 character message. Alex has re-optimised the system again. New attempts for a message longer than 7 characters can be done here... 73, Stefan Am 01.03.2017 10:13, schrieb Paul Nicholson: > > Stefan wrote (22nd Feb) > > > f = 8270.100000 Hz > > Start time: 22.Feb.2017 18:00:00 UTC > > Symbol period: 30 s > > Characters: 8 > > CRC bits: 16 > > Coding 16K21A > > > > ...delayed by 30 minutes :-( > > Start time: 22.Feb.2017 18:30:00 UTC > > (28th Feb) > > > 8chmessage.wav > > Maybe Paul can analyse it further > > The message is in there at Eb/N0 = -2.5 dB. > Timing good. Not sure about frequency yet, still sweeping > (slowly, the PC is full of 16K19 trials). > > Error map > > http://abelian.org/vlf/tmp/170301a.gif > > suggests better reception during the evening and > it gets worse later, or maybe there's a slight > frequency offset. > > -- > Paul Nicholson > -- >