Return-Path: <majordom@post.thorcom.com> Received: (qmail 7017 invoked from network); 14 Jul 2001 22:24:12 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 14 Jul 2001 22:24:12 -0000 Received: (qmail 5573 invoked from network); 14 Jul 2001 22:23:12 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 14 Jul 2001 22:23:12 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15LXji-00024X-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 14 Jul 2001 23:18:06 +0100 Received: from smtp2.ihug.co.nz ([203.109.252.8] ident=root) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15LXjg-00024S-00 for rsgb_lf_group@blacksheep.org; Sat, 14 Jul 2001 23:18:04 +0100 Received: from p150 (p55-max6.chc.ihug.co.nz [203.173.225.119]) by smtp2.ihug.co.nz (8.9.3/8.9.3/Debian 8.9.3-21) with SMTP id KAA11875 for <rsgb_lf_group@blacksheep.org>; Sun, 15 Jul 2001 10:17:19 +1200 X-Authentication-Warning: smtp2.ihug.co.nz: Host p55-max6.chc.ihug.co.nz [203.173.225.119] claimed to be p150 Message-ID: <008701c10cb1$d4c7e7a0$77e1adcb@p150> From: "Dave Brown" <tractorb@ihug.co.nz> To: rsgb_lf_group@blacksheep.org References: <001601c10cae$921cfa60$b48c01d4@g4jnt> Subject: LF: Re: Re: Near field effects Date: Sun, 15 Jul 2001 10:10:44 +1200 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: <majordom@post.thorcom.com> ----- Original Message ----- From: Andrew Talbot <G4JNT@thersgb.net> To: <rsgb_lf_group@blacksheep.org> Sent: Sunday, July 15, 2001 9:47 AM Subject: LF: Re: Near field effects snip > However, this is for a short, basically E field, antenna. My gut feeling > is that a magnetic antenna such as a loop would behave in the opposite way > and the H field would roll off much faster than the E field. snip I'm fairly sure you're correct Andy- and I think there's an excellent summary statement of all this in the first chapter or two of that EMC measurements book that Marconi put out a few years back. 73 Dave, ZL3FJ