Return-Path: Received: from mtain-mi03.r1000.mx.aol.com (mtain-mi03.r1000.mail.aol.com [172.21.131.161]) by air-me05.mail.aol.com (v129.4) with ESMTP id MAILINME051-8bb04da5c96327b; Wed, 13 Apr 2011 12:03:47 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mi03.r1000.mx.aol.com (Internet Inbound) with ESMTP id B2FCA38000577; Wed, 13 Apr 2011 12:03:36 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QA2Wc-0000Cw-8A for rs_out_1@blacksheep.org; Wed, 13 Apr 2011 17:02:38 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QA2Wb-0000Cl-Nb for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2011 17:02:37 +0100 Received: from defout.telus.net ([199.185.220.80] helo=outbound03.telus.net) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QA2WZ-0005wU-I8 for rsgb_lf_group@blacksheep.org; Wed, 13 Apr 2011 17:02:37 +0100 Received: from edtncm03 ([199.185.220.221]) by priv-edtnes29.telusplanet.net (InterMail vM.8.01.03.00 201-2260-125-20100507) with ESMTP id <20110413160233.GLVO131.priv-edtnes29.telusplanet.net@edtncm03> for ; Wed, 13 Apr 2011 10:02:33 -0600 Received: from [192.168.1.74] ([75.157.139.149]) by edtncm03 with bizsmtp id X42Y1g00z3DbXvv0142YTb; Wed, 13 Apr 2011 10:02:33 -0600 X-Telus-Outbound-IP: 75.157.139.149 X-Authority-Analysis: v=1.1 cv=K9GHI98SDtD/JTh6fJYait4M9FyL3ZUQ9yWMBOXN4X8= c=1 sm=2 a=jVez_htjv6wA:10 a=DnEL2bpAaaAA:10 a=LGgl8L9ij00A:10 a=Q9fys5e9bTEA:10 a=95HZuusQAAAA:8 a=SWHaPCtkWXzIVU8-qYAA:9 a=PUjeQqilurYA:10 Message-ID: <4DA5C918.20403@telus.net> Date: Wed, 13 Apr 2011 09:02:32 -0700 From: Scott Tilley User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.15) Gecko/20110303 Lightning/1.0b2 Thunderbird/3.1.9 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4DA4C478.8000300@iup.uni-heidelberg.de> <4DA596F8.7010007@iup.uni-heidelberg.de> In-Reply-To: <4DA596F8.7010007@iup.uni-heidelberg.de> 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 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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: 3039400cdecb4da5c9581127 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Content-Transfer-Encoding: quoted-printable X-Mailer: Unknown (No Version) Hi Stefan/group This looks it may be the link or at least a very interesting one: http://www.navy-radio.com/manuals/0101-1xx/0101_113-02.pdf 73 Scott VE7TIL On 4/13/2011 5:28 AM, Stefan Sch=E4fer wrote: > 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 > >