Return-Path: Received: from mtain-mg01.r1000.mx.aol.com (mtain-mg01.r1000.mx.aol.com [172.29.96.201]) by air-ma06.mail.aol.com (v129.4) with ESMTP id MAILINMA064-b52b4cb4cb3acf; Tue, 12 Oct 2010 16:55:22 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 4168A380000EA; Tue, 12 Oct 2010 16:55:21 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P5lr8-0000mH-De for rs_out_1@blacksheep.org; Tue, 12 Oct 2010 21:53:54 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P5lr7-0000m8-Si for rsgb_lf_group@blacksheep.org; Tue, 12 Oct 2010 21:53:53 +0100 Received: from smtp-out21.han.skanova.net ([195.67.226.208]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P5lr4-0007gt-Oz for rsgb_lf_group@blacksheep.org; Tue, 12 Oct 2010 21:53:53 +0100 Received: from [127.0.0.1] (81.235.167.68) by smtp-out21.han.skanova.net (8.5.124.10) (authenticated as u33233109) id 4C7E1065010A6E15 for rsgb_lf_group@blacksheep.org; Tue, 12 Oct 2010 22:53:44 +0200 Message-ID: <4CB4CAD8.9040407@telia.com> Date: Tue, 12 Oct 2010 22:53:44 +0200 From: "Johan H. Bodin" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; sv-SE; rv:1.9.2.9) Gecko/20100915 Thunderbird/3.1.4 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <8CD38567F4B0C6A-1C1C-116D@webmail-m021.sysops.aol.com> In-Reply-To: <8CD38567F4B0C6A-1C1C-116D@webmail-m021.sysops.aol.com> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: Detections of 5 microwatt transmission Content-Type: text/plain; charset=ISO-8859-1 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=0.0 required=5.0 tests=none 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 x-aol-global-disposition: G x-aol-sid: 3039ac1d60c94cb4cb384724 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) This is *extremely* amazing! Shannon et al. were right, of course, narrow BW and plenty of patience pays off in the end ;-) I wonder what could be accomplished in the "dark hole" (~6.5kHz) between the worst mains harmonics and the QRM DX peak around 10kHz (despite lower antenna efficiency). Thanks & congratulations for a great QRP achievement! 72 Johan SM6LKM ---- Markus Vester wrote 2010-10-12 20:57: > - To my utter surprise, Paul Nicholson (Todmorden, 1030.5 km) produced two > spectra, taken over the duration of the transmissions: > > http://abelian.org/vlf/df6nm/2010_10_09a.gif (9:50 - 18:00, 34 uHz) > http://abelian.org/vlf/df6nm/2010_10_10a.gif (9:00 - 15:00, 46 uHz) > > After taking a deep breath [...] > So by these lines, it would seem at least very likely that Paul has indeed > observed my feeble signal! We intend to do repeat the experiment in the near > future for additional confirmation. [...]