Return-Path: Received: from mtain-mh01.r1000.mx.aol.com (mtain-mh01.r1000.mx.aol.com [172.29.96.213]) by air-md09.mail.aol.com (v129.4) with ESMTP id MAILINMD093-8b964da597962ec; Wed, 13 Apr 2011 08:31:18 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mh01.r1000.mx.aol.com (Internet Inbound) with ESMTP id A91C538000237; Wed, 13 Apr 2011 08:31:16 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Q9zCo-00080d-N1 for rs_out_1@blacksheep.org; Wed, 13 Apr 2011 13:29:58 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Q9zCo-00080U-B9 for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2011 13:29:58 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Q9zCn-0002HW-HZ for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2011 13:29:58 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p3DCTqMh022019 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 13 Apr 2011 14:29:53 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id p3DCTqSQ003482; Wed, 13 Apr 2011 14:29:52 +0200 Message-ID: <4DA596F8.7010007@iup.uni-heidelberg.de> Date: Wed, 13 Apr 2011 14:28:40 +0200 From: =?ISO-8859-15?Q?Stefan_Sch=E4fer?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org CC: Paul References: <4DA4C478.8000300@iup.uni-heidelberg.de> In-Reply-To: <4DA4C478.8000300@iup.uni-heidelberg.de> X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id p3DCTqMh022019 X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: VLF: field strength as a function of frequency curve... Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: quoted-printable 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: 3039ac1d60d54da59794430b X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) VLF, Am 12.04.2011 23:30, schrieb Stefan Sch=E4fer: > VLF, > > I've just got these graphs by a SWL (or better LWL) out of an unknown=20 > paper. Now i've got the URL for this document: www.navy-radio.com/manuals/0101-1xx/0101_113-06.pdf 73, Stefan/DK7FC > It shows the results of field strength achievements as a function of=20 > the TX frequency for different distances and a given TX power. > Have we all known about this? Me not ;-) Now i understand why the=20 > military stations are located mostly between 15 and 25 kHz... > But 8970 Hz is not much worse, at least distances below 4000 km... > > But that graph tell me it is rather difficult to reach TF3HZ or 4X1RF=20 > on 5170 Hz. Anyway we'll see... > > 73, Stefan/DK7FC