Return-Path: Received: (qmail 16217 invoked from network); 12 Mar 2002 09:22:59 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by exhibition.plus.net with SMTP; 12 Mar 2002 09:22:59 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 5028 invoked from network); 12 Mar 2002 09:22:50 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 12 Mar 2002 09:22:50 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16kjmQ-00054R-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 12 Mar 2002 10:45:18 +0000 Received: from mail2.cc.kuleuven.ac.be ([134.58.10.50]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16kjmP-00054C-00 for rsgb_lf_group@blacksheep.org; Tue, 12 Mar 2002 10:45:17 +0000 Received: from LCBD15.fys.kuleuven.ac.be (LCBD15.fys.kuleuven.ac.be [134.58.80.15]) by mail2.cc.kuleuven.ac.be (8.12.1/8.12.1) with SMTP id g2C96iai121910 for ; Tue, 12 Mar 2002 10:06:44 +0100 Message-ID: <3.0.1.16.20020312100216.2e9787f6@pb623250.kuleuven.be> X-Sender: pb623250@pb623250.kuleuven.be X-Mailer: Windows Eudora Pro Version 3.0.1 (16) Date: Tue, 12 Mar 2002 10:02:16 To: rsgb_lf_group@blacksheep.org From: "Rik Strobbe" Subject: LF: investigating loop antennas In-reply-to: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hello all, the recent discussions on loop antennas inspired me (at last) to start with the loop antenna section of my "antennas for 136kHz" webpage (http://www.qsl.net/on7yd/136ant.htm) I already have some basic information about loop (as transmitting antenna) but I'm still looking for more info. In particular I am looking for : 1. practical results with loops as transmitting antenna - measured loss resistance (eventual loop-current vs RF power) related to the loop dimensions and used wire - other details on loops that were 'real world' tested (dimensions, eventual drawing etc...) - matching loop antennas - tips for contructing loop antennas (do's and dont's) 2. efficiency of loop antennas - how to calculate the radiation resistance - overview of expected losses : copper-loss, ground-loss (edison effect ?), proximity effect etc... Of course any other information about transmitting loops is most welcome. I assume that short info can be sent via the reflector, longer mails and mails including attachments should be sent direct to me (on7yd@qsl.net). 73 and many thanks in advance, Rik ON7YD