Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id vA9BnEeG019058 for ; Thu, 9 Nov 2017 12:49:15 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eCl6p-0000Ue-7d for rs_out_1@blacksheep.org; Thu, 09 Nov 2017 11:34:59 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eCl6n-0000UV-CN for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2017 11:34:57 +0000 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 1eCl6k-0005uy-47 for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2017 11:34:56 +0000 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=o7POWfVCxgUiR+NWJpNmAT2gWXfsLQQNlJkYqBZkLkY=; b=gJltQFLKTFj5KfT1CutodNdOk+ CPAuuS0AoRzDwQ29Z/1SwCz2F1s8ou0PljgF8R1vLLQbjWCm/NvaomlUbcM9vGOtMOXz208zd2B0K 0kmDIt5CGq0S3e+2IBncQ1E2G2rl72mhKhohlNnKKuR/WLg64u/b0nR0uyzXVMo3Q2iQ=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:43684 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 1eCl6i-0003my-HI for rsgb_lf_group@blacksheep.org; Thu, 09 Nov 2017 11:34:52 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id E92A1400898 for ; Thu, 9 Nov 2017 11:34:50 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <15f68ccfd03-c09-1dcf0@webjas-vaa134.srv.aolmail.net> <40168a26-8991-6998-e541-585a8575ad32@abelian.org> <59FDE6BD.5050606@posteo.de> <59FDEDE9.2090908@posteo.de> <1de81fc5-1f20-4dff-be22-77ef12ef5b21@abelian.org> From: Paul Nicholson Message-ID: Date: Thu, 9 Nov 2017 11:34:50 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US 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-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > cat msg7 | > ebnaut -et -N8 -k20 -p16K21A | > sudo ebkey -S21 -m rp,gpio=23 -T '20171106 2200' Decoded 'EINSTEIN' from the overnight 8th/9th transmission. Eb/N0 = -0.5 dB, constant reference phase, BER 41.1 % [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 4e3b1488273adbbe9757d6bdd5adf219 Subject: Re: VLF: VO1NA in Todmorden on 8270 Hz - also in Amberg? Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS autolearn=no version=2.63 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 > cat msg7 | > ebnaut -et -N8 -k20 -p16K21A | > sudo ebkey -S21 -m rp,gpio=23 -T '20171106 2200' Decoded 'EINSTEIN' from the overnight 8th/9th transmission. Eb/N0 = -0.5 dB, constant reference phase, BER 41.1 % Symbol error map http://abelian.org/vlf/tmp/171109a.gif Night Eb/N0 Phase S/N 6/7th -20.0 dB < -48 dB in 1Hz 7/8th -3.7 dB 97.6 -31.79 dB in 1Hz (E+H) 8/9th -0.5 dB 128.8 -28.63 dB in 1Hz (E+H) 8/9th -3.2 dB 131.1 H-field only 8/9th -2.3 dB 126.7 E-field only Nothing at all from the 1st night and clearly something broke during the 2nd night. After a full phase search I got a slight improvement to -0.4 dB with phase pattern -150,-150,180,180, which means the signal phase is lagging a little (on average) after about 02:00. This decode is about at the limit for the transmitter power and message duration. Looking at the error map, we might be able to use a longer message but will probably only manage 9 chars max. -- Paul Nicholson --