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 vBPJQ4pw025425 for ; Mon, 25 Dec 2017 20:26:05 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eTYKE-0001Np-DR for rs_out_1@blacksheep.org; Mon, 25 Dec 2017 19:22:14 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eTYKD-0001Ng-VU for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 19:22:13 +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 1eTYKA-0002tM-P2 for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 19:22:12 +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=4ePHJ6kdY23hPLlhKPQPYa9n2Gv/kVm/uTR6tmQHem0=; b=vHtBw58FdB3faLPAD+NzeqDgiC gEREHWOdQRSlQ7UYjZHBzqNQnCU81TDpbkARYUfiike5Qdf5yZXr3Ks1XUK4Rp9uSwbGAQgyJ0B/J wMG3Z163/PEfhJjNCDpqIdXHuVmQ4braxwcxG4XUKsJzlh08byiZq+Db/SAdOErIwOsU=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:41929 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1eTYK8-0006UC-VN for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 19:22:09 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 38290400454 for ; Mon, 25 Dec 2017 19:22:08 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <6ead0c0f-7975-64e5-2d25-4ceb79af73fb@abelian.org> From: Paul Nicholson Message-ID: <97b07b29-0960-2bae-4742-d0160c92b5d0@abelian.org> Date: Mon, 25 Dec 2017 19:22:08 +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: > Conditions look good for another overnight run. > What next Paul? Well, I suppose that 42 chars would be the absolute limit for lowest noise on the path we have. 42 chars 16K25A CRC16 [...] 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: 739d4fb39bd02fc5a2de5437a39bb056 Subject: Re: VLF: A message from W4DEX 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 > Conditions look good for another overnight run. > What next Paul? Well, I suppose that 42 chars would be the absolute limit for lowest noise on the path we have. 42 chars 16K25A CRC16 7.5 second symbols. Let's also shift the start time a little earlier. Say 22:15 UT to 07:59 UT. This will only decode if we have another low noise night. Actually last night wasn't completely low noise - there was a band of thunderstorms along the US East coast, so the noise peaked on the same bearing as the signal. > Around 0600 UT wind gust were around 40 kph causing > over 100 ma current swings. Looking at the error map, the signal seemed to deteriorate a little from about 04:30. > I moved back to 8270 with a carrier about 1130 UT W4DEX and VO1NA side by side this afternoon, spectrum plot from fbins http://abelian.org/vlf/tmp/171225a.png -- Paul Nicholson --