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: INFN-TO: mailn 1233; 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 v4TDHLvR027911 for ; Mon, 29 May 2017 15:17:22 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dFKUG-0003tC-Bl for rs_out_1@blacksheep.org; Mon, 29 May 2017 14:13:32 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dFKUG-0003t3-2Z for rsgb_lf_group@blacksheep.org; Mon, 29 May 2017 14:13:32 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dFKUD-0000jP-CR for rsgb_lf_group@blacksheep.org; Mon, 29 May 2017 14:13:30 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 21D4520EE4 for ; Mon, 29 May 2017 15:13:28 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3wbxxy6l7lzytZ for ; Mon, 29 May 2017 15:13:26 +0200 (CEST) Message-ID: <592C1E76.5040103@posteo.de> Date: Mon, 29 May 2017 15:13:26 +0200 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: <579355A36AEE9D4FA555C45D556003AB8FDD9B58@servigilant.vigilant.local> <675856377.119399.1494880952530@connect.xfinity.com> <10bf8134-0330-03c1-c7be-02b6a0391aa3@abelian.org> <1fb38e09-2adf-bdb8-1e28-5064ef604d2c@abelian.org> <17af4668-083c-ea04-9622-dbb1de768f2b@abelian.org> <59233AC1.7040707@posteo.de> <592342DF.2060405@posteo.de> <592467CA.4000604@posteo.de> <1cda44e5-18bc-b346-315a-f838065d8ea4@abelian.org> <592564F7.4060901@posteo.de> <5926ECE3.9030201@posteo.de> In-Reply-To: X-Scan-Signature: 1708620d3ce65bee0beaaede7929769a Subject: Re: VLF: EbNaut tonite 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: X-Keywords: X-UID: 11817 Hi Paul, I wonder why the reference phase was constant, because we used day and night for the transmission. Do you stop the decoder when you get a valid result or do you let it run until the process is completed? I would expect a phase shift between day and night... 73, Stefan Am 25.05.2017 21:50, schrieb Paul Nicholson: > > Stefan wrote: > > > Well, let's try something for the record list again: > > > f = 8270.100000 Hz > > Start time: 24.May.2017 20:00:00 UTC > > Symbol period: 10 s > > Characters: 160 ( 1 SMS length :-) ) > > CRC bits: 10 > > Coding 8K21A > > Duration: 22h > > Copied > > "THIS IS THE FIRST SMS SENT OVER VLF BY RADIO AMATEURS. > THANKS TO PAUL NICHOLSON, DL4YHF AND DF6NM FOR SOFTWARE > DEVELOPMENTS. JOIN IN THE EXPERIMENTS! 73, DK7FC" > > Rank 0, constant reference phase; > Eb/N0 = +0.6 dB; > BER 27.3%; > carrier S/N: 30.17 dB in 12.6 uHz, > -18.81 dB in 1Hz, > -52.79 dB in 2.5kHz; > > That's a new record message length for VLF. > > -- > Paul Nicholson > -- >