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 w2VKOlX0009887 for ; Sat, 31 Mar 2018 22:24:48 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1f2MsD-0007YC-7U for rs_out_1@blacksheep.org; Sat, 31 Mar 2018 21:13:13 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1f2MrG-0007Wn-7i for rsgb_lf_group@blacksheep.org; Sat, 31 Mar 2018 21:12:14 +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 1f2Lzy-0008Cs-6d for rsgb_lf_group@blacksheep.org; Sat, 31 Mar 2018 20:17:11 +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=kulYWEPRIsbMsmjVGn30L0W7xbw/SZuy3yOt66QPRE4=; b=JSNMJ17EMZcJL4xO/3AyQ/z1Po Tnt7K+oXl5k31Bk49bnEUr774xQvIrzJAvRzdwXDOteMKdm+Tk6zU1ZaEb1X5DTUqqWM91UwSOpyT yUhKKc+nlYP8njhCqNixokDvT3acHPSulnYfgAlAUwHwwv1VwpGbf52ZPQyiBsYUdnQU=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:47038 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 1f2Lzr-0006u9-Gl for rsgb_lf_group@blacksheep.org; Sat, 31 Mar 2018 20:17:03 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 3CB6740043B for ; Sat, 31 Mar 2018 19:17:02 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <1627cf18dd8-1dd5-2abb@webjasstg-vab24.srv.aolmail.net> From: Paul Nicholson Message-ID: <8e35c871-081e-54de-296c-57fb9f310fb9@abelian.org> Date: Sat, 31 Mar 2018 19:17:02 +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: <1627cf18dd8-1dd5-2abb@webjasstg-vab24.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: A great result there Domenico. It is nice to see such a decode where the signal is invisible, the constellation is just a central blob and there's no significant squared carrier on the spectrum. But there was enough squared carrier S/N that a phase search wasn't necessary. [...] 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: e90dcb17768c7e768f13e0721cc1c0c7 Subject: Re: LF: EbNaut March 30/31 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 A great result there Domenico. It is nice to see such a decode where the signal is invisible, the constellation is just a central blob and there's no significant squared carrier on the spectrum. But there was enough squared carrier S/N that a phase search wasn't necessary. Yes a new LF distance record, in fact an absolute distance record for EbNaut, beating the previous W4DEX/DL0A0 record achieved at VLF on 5th Jan. It seems that coherent signaling[*] can be used quite well at LF, even up to one hour duration. Perhaps longer? [*] specifically, where the signal is too weak to extract a running reference phase, thus relying on stable propagation phase for the duration of the message. -- Paul Nicholson --