Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v4Q5CRBf012995 for ; Fri, 26 May 2017 07:12:28 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1dE7Q3-0000X1-D4 for rs_out_1@blacksheep.org; Fri, 26 May 2017 06:04:11 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1dE7Pu-0000Ws-Kv for rsgb_lf_group@blacksheep.org; Fri, 26 May 2017 06:04:02 +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 1dE7Pq-0003iA-Rm for rsgb_lf_group@blacksheep.org; Fri, 26 May 2017 06:04:01 +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=yTMkNvfjgEDL1EXkYYQzlUlqZ+q6mReIvOZJ9reqOGg=; b=phuAwaw9mtxyCHdHrerWplIv4q 3XBfbtijlT6n7+2yeJkW5ZuSq6bpPqH1CMYUD3ql/UkRYUAqY9rBwabt430rDc/6HCVI9UmyNWorc B6dyGZvPgp8uQ1Gi1ZtY3U/qh5ysPV2U/FV6TAEUCvrsrqovISD6nH/guwnyjICFl53o=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:51637 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 1dE7Pp-0008Q1-RU for rsgb_lf_group@blacksheep.org; Fri, 26 May 2017 06:03:57 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 355BA4007A0 for ; Fri, 26 May 2017 05:03:57 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <15c4274112f-72c9-13053@webprd-m71.mail.aol.com> From: Paul Nicholson Message-ID: <8d1773da-e6c7-120a-73cf-3f817ec701a7@abelian.org> Date: Fri, 26 May 2017 05:03:57 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <15c4274112f-72c9-13053@webprd-m71.mail.aol.com> 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-Scan-Signature: f62c7cf8eeb8e5a327b71719e9bffff1 Subject: Re: VLF: EbNaut tonite, 'SMS' via VLF Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit 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 X-Scanned-By: MIMEDefang 2.75 Status: RO X-Status: X-Keywords: X-UID: 11773 Stefan wrote: > ...in less than a day and without stacking! You made a good choice of symbol duration. The error map is at http://abelian.org/vlf/tmp/170525e.png We might do as well or better with a daytime slot 05:00 to 21:00 to avoid the night noise and two terminators. Markus wrote: > I should have mentioned that SpecLab FFT recordings are > usually delayed by a four sample latency. That helps, I can see some correlation now. The message is at Carrier Eb/N0: -7.5 dB Carrier S/N: 22.09 dB in 12.6 uHz, -26.90 dB in 1Hz, -60.88 dB in 2.5kHz I tried resampling to a higher rate but that didn't help. -- Paul Nicholson --