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,T_DKIM_INVALID 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 v5C9U0NE032067 for ; Mon, 12 Jun 2017 11:30:01 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dKLbK-0001T9-KY for rs_out_1@blacksheep.org; Mon, 12 Jun 2017 10:25:34 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dKLbC-0001T0-IZ for rsgb_lf_group@blacksheep.org; Mon, 12 Jun 2017 10:25:26 +0100 Received: from porthos.netcom.co.uk ([217.72.171.73]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dKLb8-0004uD-Vn for rsgb_lf_group@blacksheep.org; Mon, 12 Jun 2017 10:25:25 +0100 X-DKIM-Result: Domain=abelian.org Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=xxg0hSioxZEZK2ru0InqjdM5+uaT6eiFDOmwq1AqL9I=; b=2tDX6GeZC16jl9G96nGpwzlGZU pfZw+vEHikDtjwUpY3Cqa+ARl005ca6JXi4nsGUlIlB8KUlZDIzcFiimbE+itc5yetjXI2WNiARhN XvO9TnFjmNYXavK9slTDDsVGs9XBrg8pfh0Nov0Lb4ctikZVGmdP5+vA7X5MNBd4mSz8=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:42927 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1dKLb7-000897-OU for rsgb_lf_group@blacksheep.org; Mon, 12 Jun 2017 10:25:21 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 77B9940041B for ; Mon, 12 Jun 2017 09:25:19 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <15c87460f7d-767a-39538@webprd-m04.mail.aol.com> <5939353E.9080904@posteo.de> <593B1609.6080004@posteo.de> From: Paul Nicholson Message-ID: Date: Mon, 12 Jun 2017 09:25:19 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <593B1609.6080004@posteo.de> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - porthos.netcom.co.uk X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - abelian.org X-Get-Message-Sender-Via: porthos.netcom.co.uk: authenticated_id: catchall@abelian.org X-Authenticated-Sender: porthos.netcom.co.uk: catchall@abelian.org X-Scan-Signature: 046f068074e745d5c60ca47deee9b503 Subject: Re: VLF: This weekend... 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: 11953 Stefan schrieb: > f = 6470.100000 Hz > Start time: 10.Jun.2017 04:00:00 UTC > Symbol period: 20 s > Characters: 100 > CRC bits: 8 > Coding 8K21A Copied a message with md5 hash (*): 9f7707ee7424c3c07c3524616fe45b9b Constant reference phase. BER 31.1% Eb/N0 = -1.1 dB, 94% of channel capacity. Carrier S/N: 26.42 dB in 10.0 uHz, -23.60 dB in 1Hz, -57.58 dB in 2.5kHz List rank 1159. Decoder RAM: 10Gbyte with list length 10k. I used ebnaut option -a 100 to normalise the amplitudes in the decoder. It didn't decode at all without that. 100 chars is a record message length at 6470 Hz. Error map http://abelian.org/vlf/tmp/170612a.png I used a night blanker setting -a 12 (in version 8 onwards), or about -a1.2 before version 8. (*) echo -n 'XXX...XXX' | md5sum -- Paul Nicholson --