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=3 Fuz1=3 Fuz2=3 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 v4PKGpkf011150 for ; Thu, 25 May 2017 22:16:52 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dDz76-0007et-LR for rs_out_1@blacksheep.org; Thu, 25 May 2017 21:12:04 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dDz75-0007ek-WF for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 21:12:04 +0100 Received: from lethe.lipkowski.org ([178.32.151.135] helo=lipkowski.org) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dDz73-0001n6-05 for rsgb_lf_group@blacksheep.org; Thu, 25 May 2017 21:12:02 +0100 Received: from mailn.lipkowski.org (localhost [127.0.0.1]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4PKCKGY011124 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 25 May 2017 22:12:21 +0200 Received: from localhost (sq5bpf@localhost) by mailn.lipkowski.org (8.14.4/8.14.4/Submit) with ESMTP id v4PKCJ9T011120 for ; Thu, 25 May 2017 22:12:19 +0200 X-Authentication-Warning: mailn.lipkowski.org: sq5bpf owned process doing -bs Date: Thu, 25 May 2017 22:12:19 +0200 (CEST) From: Jacek Lipkowski To: rsgb_lf_group@blacksheep.org In-Reply-To: Message-ID: 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> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.75 X-Scanned-By: MIMEDefang 2.75 on 10.1.3.10 X-Scan-Signature: ac0f6ff1af52b6036ac1f4fe0c2bd52c Subject: Re: VLF: EbNaut tonite Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed 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 Status: O X-Status: X-Keywords: X-UID: 11765 I've tried the decoded message in ebnaut signal analysis mode, the decoder returns: initial reference phase 45.0 amplitude 2.401e-03 carrier phase: 45.4 carrier Eb/N0: -7.1 carrier S/N: 22.50 dB in 12.6 uHz so around 6-7dB, and it would be receivable here too. PSE QRO! VY 73 Jacek / SQ5BPF On Thu, 25 May 2017, Paul Nicholson wrote: > Date: Thu, 25 May 2017 19:50:31 +0000 > From: Paul Nicholson > Reply-To: rsgb_lf_group@blacksheep.org > To: rsgb_lf_group@blacksheep.org > Subject: Re: VLF: EbNaut tonite > > > 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 > -- >