Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id B6D40380000CA; Tue, 28 Feb 2012 14:04:13 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1S2RvB-0000j6-Ep for rs_out_1@blacksheep.org; Tue, 28 Feb 2012 18:37:09 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1S2RvA-0000iw-W8 for rsgb_lf_group@blacksheep.org; Tue, 28 Feb 2012 18:37:08 +0000 Received: from out1.ip03ir2.opaltelecom.net ([62.24.128.239]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1S2Rv7-0006A3-VI for rsgb_lf_group@blacksheep.org; Tue, 28 Feb 2012 18:37:08 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ar0CAJseTU9cGSur/2dsb2JhbAAMNrJNBIN/AQEBAQMyAQVAEQsJDwkWDwkDAgECAUUTCAEBiA+5LIpCgkMPEQYECwYEAwQDCAQKBxoDAwMChQIPMg4CBQQGGg6DHgSNa5Jwh1Q X-IronPort-AV: E=Sophos;i="4.73,497,1325462400"; d="scan'208";a="377005340" Received: from host-92-25-43-171.as13285.net (HELO [192.168.2.2]) ([92.25.43.171]) by out1.ip03ir2.opaltelecom.net with ESMTP; 28 Feb 2012 18:36:59 +0000 Message-ID: <4F4D1ECF.7040001@talktalk.net> Date: Tue, 28 Feb 2012 18:37:03 +0000 From: qrss User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4F4CEDFC.6080305@iup.uni-heidelberg.de> In-Reply-To: <4F4CEDFC.6080305@iup.uni-heidelberg.de> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: VLF staircase Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 8bit 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-SCOLL-SCORE: 0:2:443680640:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d410a4f4d252d2cbe X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hi Stefan It was very strong (usual strength) with me too I suspected the usual culprit, my Grabber Wide View has been on and off a few times today so the evidence has gone. Eddie On 28/02/2012 15:08, Stefan Schäfer wrote: > There was a staircase again on VLF, i.e. a commercial station has done > some tests. The lowest frequency was about 8 kHz at 8:50 UTC. > > Visible on many VLF grabbers like: > > http://www.ok2bvg.cz/vlfgrabber/ > http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html > http://members.aon.at/grabber/VLF/index.html > http://www.qsl.net/4x1rf/yo/vlfgrabber.htm > > Paul, can you give us some deteils about the expected origin? > > 73, Stefan/DK7FC > > PS: I'm mentally preparing a new VLF experiment. More regularly > observing the wind forecast... > >