Return-Path: Received: (qmail 27610 invoked from network); 13 Jul 2001 17:18:21 -0000 Received: from unknown (HELO warrior-inbound.servers.plus.net) (212.159.14.227) by excalibur.plus.net with SMTP; 13 Jul 2001 17:18:21 -0000 Received: (qmail 2259 invoked from network); 13 Jul 2001 17:17:02 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior with SMTP; 13 Jul 2001 17:17:02 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15L6QH-0004Kn-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 13 Jul 2001 18:08:13 +0100 Content-Transfer-Encoding: 8bit Received: from relay.dera.gov.uk ([192.5.29.49]) by post.thorcom.com with smtp (Exim 3.16 #2) id 15L6QG-0004Ki-00 for rsgb_lf_group@blacksheep.org; Fri, 13 Jul 2001 18:08:12 +0100 Received: (qmail 12861 invoked from network); 13 Jul 2001 18:05:55 +0100 Received: from trtnmail.dera.gov.uk (146.80.9.56) by relay.dera.gov.uk with SMTP; 13 Jul 2001 18:05:55 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 3520 invoked from network); 13 Jul 2001 18:09:28 +0100 Received: (ofmipd 192.5.29.90); 13 Jul 2001 17:09:06 -0000 Received: by bob.dera.gov.uk; (8.8.8/1.3/10May95) id SAA05492; Fri, 13 Jul 2001 18:13:01 +0100 (BST) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: (qmail 21816 invoked from network); 13 Jul 2001 17:59:39 -0000 Received: from gauntlet.mail.dera.gov.uk (172.16.9.10) by baton.dera.gov.uk with SMTP; 13 Jul 2001 17:59:39 -0000 Received: by gauntlet.mail.dera.gov.uk; id RAA04016; Fri, 13 Jul 2001 17:48:48 GMT Received: from unknown(10.71.64.31) by gauntlet.mail.dera.gov.uk via smap (3.2) id xma004006; Fri, 13 Jul 01 17:48:36 GMT Received: from mailex.dera.gov.uk (unverified) by mailguard.dera.gov.uk (Content Technologies SMTPRS 4.1.5) with SMTP id for ; Fri, 13 Jul 2001 18:06:31 +0100 Received: (qmail 8709 invoked from network); 13 Jul 2001 16:56:37 +0100 Received: from softdnserror (HELO cchecker.dstl.gov.uk) (192.168.248.52) by mailex.dstl.gov.uk with SMTP; 13 Jul 2001 15:56:37 -0000 Received: from FRN-MAIL-R3 (unverified) by cchecker.dstl.gov.uk (Content Technologies SMTPRS 4.1.2) with ESMTP id for ; Fri, 13 Jul 2001 16:56:40 +0100 Received: by FRN-MAIL-R3 with Internet Mail Service (5.5.2650.21) id <356X2JPR>; Fri, 13 Jul 2001 18:06:14 +0100 Date: 13 Jul 2001 15:52:55 +0100 Message-ID: <7D653C9C42F5D411A27C00508BF8803D55C553@pdw-mail-r1.dstl.gov.uk> From: "Andrew Talbot" To: rsgb_lf_group@blacksheep.org Subject: LF: RE: Near field of 9kHz antenna II MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset=iso-8859-1; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Obviously not 1/R^6 roll off then !!! Looking at the figures for 1km and 2km it appears to be more like 1/R^2 which is the rate of the radiation field decay - surely the H field should fall off faster than that ? Very Curious. Come on, there must be someone out there who understands and can apply Maxwells equations :-) Andy G4JNT -----Original Message----- From: Dick Rollema [mailto:d.w.rollema@freeler.nl] Sent: 2001-07-13 14:38 To: LF-Group Subject: LF: Near field of 9kHz antenna II To All from PA0SE Here is the value of the near magnetic field up to 2km from the antenna. -- The Information contained in this E-Mail and any subsequent correspondence is private and is intended solely for the intended recipient(s). For those other than the recipient any disclosure, copying, distribution, or any action taken or omitted to be taken in reliance on such information is prohibited and may be unlawful.