Return-Path: X-Spam-DCC: paranoid 1290; 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=-0.8 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO, RATWARE_GECKO_BUILD 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 sB1Hfcrj002711 for ; Mon, 1 Dec 2014 18:41:38 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1XvUpI-0006Tb-8y for rs_out_1@blacksheep.org; Mon, 01 Dec 2014 17:31:56 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1XvUpH-0006TS-JU for rsgb_lf_group@blacksheep.org; Mon, 01 Dec 2014 17:31:55 +0000 Received: from parrot.netcom.co.uk ([217.72.171.49]) by relay1.thorcom.net with esmtp (Exim 4.84) (envelope-from ) id 1XvUpF-0007t3-CD for rsgb_lf_group@blacksheep.org; Mon, 01 Dec 2014 17:31:54 +0000 Received: from sb.abelian.org (i-194-106-52-83.freedom2surf.net [194.106.52.83]) by parrot.netcom.co.uk (Postfix) with ESMTP id 41D693273D6 for ; Mon, 1 Dec 2014 17:31:18 +0000 (GMT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by sb.abelian.org (Postfix) with ESMTP id 32D8428A02C2 for ; Mon, 1 Dec 2014 17:31:52 +0000 (UTC) Message-ID: <547CA608.5060106@abelian.org> Date: Mon, 01 Dec 2014 17:31:52 +0000 From: Paul Nicholson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130106 Thunderbird/17.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <547AB8D8.9060504@abelian.org> <547C2564.5010305@abelian.org> <547C7568.1050801@gmail.com> In-Reply-To: <547C7568.1050801@gmail.com> X-Scan-Signature: 0b2d339ae1d48966556dfb6ad64e2bce Subject: Re: VLF: Experiments - anyone? Content-Type: text/plain; charset=ISO-8859-1; 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 1375 Glad you found the problem Dex. Will look forward to another test tonight or soon. I'll try to put out my new E-field receiver this evening if I can finish some alterations quickly. It has much lower noise floor. I wrote: > PC needs reasonably good clock discipline (0.1 seconds or so) Probably 1 second is good enough because the symbol period would be at least 30 seconds (rate 1/8) or 15 seconds (rate 1/16). A good measurement of carrier S/N and phase will allow a suitable rate and timing to be selected. -- Paul Nicholson --