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 v9IJGIKt029392 for ; Wed, 18 Oct 2017 21:16:20 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e4tkG-0001Hn-Fh for rs_out_1@blacksheep.org; Wed, 18 Oct 2017 20:11:12 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e4tkG-0001He-3p for rsgb_lf_group@blacksheep.org; Wed, 18 Oct 2017 20:11:12 +0100 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 1e4tkD-0006WU-Ao for rsgb_lf_group@blacksheep.org; Wed, 18 Oct 2017 20:11:10 +0100 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=JBS3eRBoPohx2++V3X2AhzaHOnWNvUnnvy0Fvg3IV1o=; b=S3UyHWbZKpVgLDLUzGrFSezPfz HQac6ijIVxtBwvix/CH6uOOfq+BC7EHLC+dEI+UoVAy7E4Ox4rVAq/w4h7B5Q+E0P20/riIQVIXA/ 9Z/IOGp5nF2fOQ0KnrbKKfdP4D0+21XTR6x/z6+Zv+IXTtMXFx0S1TUM/GtT+Wd8DUNo=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:53730 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 1e4tkB-0002lH-C9 for rsgb_lf_group@blacksheep.org; Wed, 18 Oct 2017 20:11:07 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id AB7824000C1 for ; Wed, 18 Oct 2017 19:11:06 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: From: Paul Nicholson Message-ID: Date: Wed, 18 Oct 2017 19:11:06 +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: 16 characters at 6470 Hz across a land path of almost 2000 km. What a marvelous achievement! Distinctly harder than trans- Atlantic due to the overland attenuation. > carrier Eb/N0 -0.35 dB [...] 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: 7001055fa59a9c23b9831ea6d317a074 Subject: Re: LF: 6470.1 Hz 16-char decode nr Moscow 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 16 characters at 6470 Hz across a land path of almost 2000 km. What a marvelous achievement! Distinctly harder than trans- Atlantic due to the overland attenuation. > carrier Eb/N0 -0.35 dB Close to the limit, and only possible when everything is adjusted to perfection and perfectly reliable. > stacking of 11 copies of transmission with accurate weight > summation Clearly this is not a mode of operation suited to the impatient. It is not a record number of characters for the band, nor a new distance record - but the combination is remarkable. It is so rare in life to be able to do something which has never been done before, especially something so close to impossible. We are very lucky to be in this position, to have this green field to play in and the technology to exploit it. Well done Alex and Stefan, and thank you for making my day with this result. -- Paul Nicholson --