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 vA6DdhAI006944 for ; Mon, 6 Nov 2017 14:39:44 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eBhXN-0001b4-4n for rs_out_1@blacksheep.org; Mon, 06 Nov 2017 13:34:01 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eBhXM-0001av-D5 for rsgb_lf_group@blacksheep.org; Mon, 06 Nov 2017 13:34:00 +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 1eBhXI-00010O-La for rsgb_lf_group@blacksheep.org; Mon, 06 Nov 2017 13:33:59 +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=JPzJlhja2UITCnzwwgr2A/yDv9UaxpiaMfsbz7hDew8=; b=Wt7TSWDGUxiSMWizsJ21Axbev3 XPIIFfsAQ08DZaB7ZM9E7sIatA78jU9y9J5LaNuVglltYcPPBvvTT+LJezPo35awFeeViCPqmRVvL go+KYdi+pgxOhnv/I3a5WUT3LAxsoo6T4haAPskqdHrxxg5vgYCe0PIJRKVgyIVlwivs=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:54396 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 1eBhXG-0004oq-GR for rsgb_lf_group@blacksheep.org; Mon, 06 Nov 2017 13:33:55 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 79F38400922 for ; Mon, 6 Nov 2017 13:33:45 +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: Mon, 6 Nov 2017 13:33:45 +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: Neither component decoded by itself: H-field: Eb/N0 -1.5dB phase 40.3 (no decode) E-field: Eb/N0 -0.9dB phase 35.3 (no decode) The noise was just a little higher than average for the time of year. On an average night we might gain another dB of S/N. [...] 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: 086f3faad0220c9ae57a7913e711a86d 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 Neither component decoded by itself: H-field: Eb/N0 -1.5dB phase 40.3 (no decode) E-field: Eb/N0 -0.9dB phase 35.3 (no decode) The noise was just a little higher than average for the time of year. On an average night we might gain another dB of S/N. A strong EbNaut signal on almost the same frequency from a local station was not a problem - almost opposite beam headings. I couldn't improve the result by playing around with the E/H mix, so it looks like the rough E-field cal I'm using is fairly good. Joe wrote: > Will do a repeat transmission tonight. Perhaps try a longer message and stronger code. It looks like the band will support an earlier start time and later finish. Eg cat msg7 | ebnaut -et -N8 -k20 -p16K21A | sudo ebkey -S21 -m rp,gpio=23 -T '20171106 2200' This uses a -k20 option to give a 20 bit CRC. Should still decode, easily if it's an averagely noisy night. -- Paul Nicholson --