Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 13785380000AD; Mon, 1 Aug 2011 06:54:59 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qnq7R-0001pG-2X for rs_out_1@blacksheep.org; Mon, 01 Aug 2011 11:53:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qnq7Q-0001p7-8u for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 11:53:08 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qnq7P-0006Wu-2K for rsgb_lf_group@blacksheep.org; Mon, 01 Aug 2011 11:53:08 +0100 Received: from ix.urz.uni-heidelberg.de (cyrus-portal.urz.uni-heidelberg.de [129.206.100.176]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p71Ar5LF008024 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 12:53:05 +0200 Received: from extmail.urz.uni-heidelberg.de (extmail.urz.uni-heidelberg.de [129.206.100.140]) by ix.urz.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p71Ar4L2015374 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 12:53:05 +0200 Received: from [129.206.205.194] (vpn205-194.rzuser.uni-heidelberg.de [129.206.205.194]) by extmail.urz.uni-heidelberg.de (8.13.4/8.13.1) with ESMTP id p71Ar3Fc017076 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 12:53:04 +0200 Message-ID: <4E368591.40301@iup.uni-heidelberg.de> Date: Mon, 01 Aug 2011 12:53:05 +0200 From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: VLF: strange transmissions Content-Type: text/plain; charset=ISO-8859-15; format=flowed 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-SCOLL-SCORE: 0:2:255924528:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1db4054e3686032741 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none VLF, There are strange transmissions near 12.4, 13.3 and 15.6 kHz, narrow band, very strong here in Heidelberg http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html and also in Iceland http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/index.html, also very clear at http://www.ok2bvg.cz/vlfgrabber/ and others. Does anybody know what it is? Looks different to the often seen staircases during transmitter tests... Unfortunately many VLF grabbers are paused / OFF these times... 73, Stefan/DK7FC