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 vBAKCGoR022390 for ; Sun, 10 Dec 2017 21:12:17 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eO7tL-0004ss-5c for rs_out_1@blacksheep.org; Sun, 10 Dec 2017 20:08:03 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eO7tK-0004sj-Qy for rsgb_lf_group@blacksheep.org; Sun, 10 Dec 2017 20:08:02 +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 1eO7tH-0000WZ-N3 for rsgb_lf_group@blacksheep.org; Sun, 10 Dec 2017 20:08:01 +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:Cc:References:To:Subject:Sender:Reply-To: 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=4ZEMMy9RDDjM6K/4HjUr984fvqIXwNuE4+FcX9oX3D4=; b=xh9yOYHapju6liY6J1eTZ5JSS9 CveuMY3Qy2rWpo6E0m/zsCbE61TADJQ+9YtMczx31vIlJX7SkSe7GvzVBF9/IEB4H+gYFx8pUx2HF FlMI9pLmrNnio5SYenZP5VCmVNkn2Oh4MGTt5g+QLq3pgj51waXL+n7+2y+tIItyr+Dw=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:60656 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 1eO7tG-0004nV-4c; Sun, 10 Dec 2017 20:07:58 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 86EF6400496; Sun, 10 Dec 2017 20:07:57 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <2dbcd2a8-0109-41e4-c0ca-aada17f54de8@abelian.org> Cc: Michael Smith From: Paul Nicholson Message-ID: <22021d49-300e-bfc3-2c2b-a7bef27981ae@abelian.org> Date: Sun, 10 Dec 2017 20:07:57 +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: 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: Stefan wrote: > What an exciting achievement. Yes indeed and it is also the longest distance message decode at VLF. [...] 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: d7907c3bf895ca41e0bedc3fa074f0d4 Subject: Re: VLF: Transatlantic success East to West 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 Stefan wrote: > What an exciting achievement. Yes indeed and it is also the longest distance message decode at VLF. Mike has put a lot of work into his receiver and I'm very pleased to see this well-deserved success for him. He's thought about putting up a loop receiver but the usual obstacle is three channel A/D. We're both interested in having another look at the Octo card to see if it can be made to work well enough. > For tonite i would start the new 3 charcter message on > the TA path. Yes that looks about the right settings. Three good nights might do it if we're lucky. But realistically it'll probably take more. Slightly worryingly, the phase of the two 1-char messages was 173 deg and 88 deg. Hopefully that first reading is upset by noise, repeats wont stack very well if that phase is genuine. > i am in contact with UA0SNV. Yesterday he told me he was > outside and installed a 120m long wire while it was -30 C > outside :-) Heroic! Gosh, -6 C outside here and I decided a nice warm office was a better place to spend the day. Well I hope you can raise some interest further afield Stefan, you seem to have run out of receivers! PS, I see some daytime signal from VO1NA today, for the first time in a few days. http://abelian.org/vlf/fbins3.html#p=1512928800&b=280&s=fd&m=fb&c=1 Quite faint in this bandwidth but it should come up after midnight. PPS, message just in from Mike: Congratulations Stefan! Well done! Paul: I'm going to swap my battery around 20:00 UTC - it's just about flat, and I don't want to go dark at a random time over the day or so. Mike Mike runs his receiver on a couple of big 12V batteries. That, combined with a location well away from the house and a fibre optic link, makes for excellent isolation. Ideal for registering signals down at the one electron level! PPPS, Stefan - what's your estimate of ERP at 17470 Hz? I'm going to have a play with LWPC, to see what field strengths might be like over various long paths. -- Paul Nicholson --