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 vBPAvFwR023144 for ; Mon, 25 Dec 2017 11:57:18 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eTQMU-0007OX-Ap for rs_out_1@blacksheep.org; Mon, 25 Dec 2017 10:52:02 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eTQMT-0007OO-OX for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 10:52:01 +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 1eTQMR-0000I3-2N for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 10:52:00 +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=9Hg37/nWGrfEvhg4WVL8LvjEX2wkeraREIbjlOFH5EI=; b=OSM+bQeZzvjm0qLPP8z/ZJQVZ1 kiTk4LMsxAs8pt+gmWTeTXVJOpjUOoVoBRuaUBUIcQSXm5K+PIm5cw9UQxBLDnr8X+BxO8VfHSwaG 8KMTjxeHYFNFUnf7+ycBt9ZUT9c7mbBTJCiM9/WsQNf/de7U7/uuSJg+hwINcXF5lcrA=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:38560 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 1eTQMP-0001gP-R6 for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 10:51:57 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 273ED400454 for ; Mon, 25 Dec 2017 10:51:57 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <1608d13101f-1d34-8b@webjas-vad016.srv.aolmail.net> From: Paul Nicholson Message-ID: Date: Mon, 25 Dec 2017 10:51:57 +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: <1608d13101f-1d34-8b@webjas-vad016.srv.aolmail.net> 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: > another big step since New Year 2015. We can always count on Dex to try to push the limits out further. Last night the noise was low, so low that the best S/N was bearing 290. Dex on 284.6. Usually the S/N peaks up by aiming off at 310 to 330. [...] 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: 1708620d3ce65bee0beaaede7929769a 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 > another big step since New Year 2015. We can always count on Dex to try to push the limits out further. Last night the noise was low, so low that the best S/N was bearing 290. Dex on 284.6. Usually the S/N peaks up by aiming off at 310 to 330. It was also the first time I used the new antenna calibrations to mix the signal for a decode. We used 8269 to avoid any overlap with VO1NA. Given those conditions, we could have tried 42 chars, 16K25A CRC16 with 7 second symbols 23:00 to 08:05:04, for Eb/N0 -0.15. Correlations from on-line receivers (a loss of perhaps 1 to 2dB due to vorbis encoding): Bielefeld 6918 km, Eb/N0 -12.3 dB; Cumiana 7173 km, Eb/N0 -10.0 dB; Warsaw 7681 km, Eb/N0 -19.7 dB; Forest VA 254 km, Eb/N0 -1.2 dB *Decoded* rank 0; Hawley TX 1816 km, Eb/N0 -7.7 dB; The low Eb/N0 at Forest is surprising. Something is wrong, should be a huge signal. In 2015 Dex's EbNaut was even visible on a spectrogram at Forest. What do normal people do on Christmas day morning? I was out at the H rx site with a spectrum analyser looking at the amplitude of some MF signals (909kHz 5mV RMS on the open circuit loop). Meanwhile, I'm running low on celebratory cigars! -- Paul Nicholson --