Return-Path: X-Spam-DCC: paranoid 1481; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,RATWARE_GECKO_BUILD,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id uA2L4j2x025850 for ; Wed, 2 Nov 2016 22:04:45 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1c22ex-0003oS-LY for rs_out_1@blacksheep.org; Wed, 02 Nov 2016 21:01:23 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1c22ex-0003oJ-CY for rsgb_lf_group@blacksheep.org; Wed, 02 Nov 2016 21:01:23 +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 4.87) (envelope-from ) id 1c22eu-0001xo-DJ for rsgb_lf_group@blacksheep.org; Wed, 02 Nov 2016 21:01:22 +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:To:References:Reply-To:Subject:Sender: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=9iVmQLiqLOKMJyK/1PADp/xQBaF3vA2eQ0vncpJ9g68=; b=2LxomgDRwc3t+B1t/AmOLT5e4o S3dJtTTWKhbIR3vibKLdCtUkKbTZpRVKnmiGd7+EaQhPSk6Q9xrq5F9WbcFVKuj1HN24fPJrofc5y 4/D9mKGdeK9fum2RWjiafr2bKroNizGPK9mst+JZU+WZJn/B/7iGS8yfesq3X4ke3e9o=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:55273 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1c22et-0007JE-KQ for rsgb_lf_group@blacksheep.org; Wed, 02 Nov 2016 21:01:19 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 0CE69400415 for ; Wed, 2 Nov 2016 21:01:19 +0000 (UTC) References: <154c32c4dba-373a-24653@webprd-m58.mail.aol.com> <573CAF79.9040701@abelian.org> <573CBBF0.4030701@posteo.de> <573E5907.6020107@posteo.de> <573EA094.3040205@abelian.org> <573EF90F.1080201@posteo.de> <573FC4DA.3080107@abelian.org> <5740842D.3030000@posteo.de> <5744FA27.6010703@posteo.de> <57F56531.3060205@posteo.de> <5817DE39.9010506@posteo.de> <5818DDAB.7000804@abelian.org> <5819E3AA.3020906@posteo.de> <581A452F.6060506@abelian.org> <581A4BC6.9030106@abelian.org> To: rsgb_lf_group@blacksheep.org From: Paul Nicholson Message-ID: <581A541E.9050406@abelian.org> Date: Wed, 2 Nov 2016 21:01:18 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <581A4BC6.9030106@abelian.org> 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: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz 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 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 9359 I added the relative background noise at 6470 Hz to the error map, http://abelian.org/vlf/tmp/161102b.gif Tried some further settings of blanker but no improvement over the +1.7 dB. > Start time: 03.11.2016 06:00:00 UTC > Symbol length: 30 s > Characters: 11 Should have a good chance if we have another quiet day. I think that 15 chars with 25 second symbols is probably within reach (at about -0.4 dB) but let's try 11 chars first. The error map is useful for planning transmissions. Even though the signal is too weak to plot its amplitude, the error map reveals when the signal is strong enough. -- Paul Nicholson --