Return-Path: X-Spam-DCC: paranoid 1480; 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 u9C9iDqn021564 for ; Wed, 12 Oct 2016 11:44:13 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1buG18-0003k3-FA for rs_out_1@blacksheep.org; Wed, 12 Oct 2016 10:40:06 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1buG18-0003ju-1L for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2016 10:40:06 +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 4.87) (envelope-from ) id 1buG16-0005vw-K5 for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2016 10:40:04 +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=y+VWp7Uq8gchnEijwVxvqew2Lj6DnSyQCMsr3L6clcs=; b=HF7jt9iYGb3E14LfbQoHr8EIMa BYnt3U4CDW9stHDaK6K/GXoUHCNzPzAi1pigfkm5xu2mABKEiTxpolxeI7XhEk9hpZxkyCn+WIx/3 8nwxHqcINg7xNnGGlVe0xfgjHsrxD1KAORvhVP8GgexHpDsP2efR7Ccqrws5SQH/zziI=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:48166 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 1buG15-00033l-8z for rsgb_lf_group@blacksheep.org; Wed, 12 Oct 2016 10:40:03 +0100 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id AD11F40073E for ; Wed, 12 Oct 2016 09:40:02 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <157b05f2e7d-a71-85cc@webprd-a60.mail.aol.com> <57FC02C5.10700@posteo.de> <57FCA0EC.3000804@abelian.org> <57FCE651.7020809@posteo.de> From: Paul Nicholson Message-ID: <57FE04F2.9090208@abelian.org> Date: Wed, 12 Oct 2016 09:40:02 +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: <57FCE651.7020809@posteo.de> 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: 59677119386dcf9f1872cb454dc1331d 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: 9028 Using the carrier on 6470.0025, I can see that the signal is completely lost in the noise during the night. Daytime S/N 06:00 to 18:00 UT is 21dB in 23uHz, which is sufficient for, say, 15 chars with 20 second symbols using 16K25 for estimate Eb/N0 of +0.5 dB, duration 11:33:20. Daytime signal averages about 0.05 fT or 15nV (about two electrons on a 20pF antenna), nighttime looks similar as far as I can tell through the noise. We should try a daytime test. -- Paul Nicholson --