Return-Path: Received: (qmail 12999 invoked from network); 26 Oct 2002 18:02:32 -0000 Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 26 Oct 2002 18:02:32 -0000 Received: (qmail 1461 invoked from network); 26 Oct 2002 18:03:55 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 26 Oct 2002 18:03:55 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 4.10) id 185VHD-0004nk-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 26 Oct 2002 19:03:11 +0100 Received: from [194.25.134.85] (helo=mailout11.sul.t-online.com) by post.thorcom.com with esmtp (Exim 4.10) id 185VHC-0004nb-00 for rsgb_lf_group@blacksheep.org; Sat, 26 Oct 2002 19:03:10 +0100 Received: from fwd07.sul.t-online.de by mailout11.sul.t-online.com with smtp id 185VH1-0000mr-07; Sat, 26 Oct 2002 20:02:59 +0200 Received: from (0482183881-0001@[62.224.50.93]) by fwd07.sul.t-online.com with smtp id 185VGt-1EYC8mC; Sat, 26 Oct 2002 20:02:51 +0200 From: "jannsen" <0482183881-0001@t-online.de> To: rsgb_lf_group@blacksheep.org References: <3DB90C79.13772.9C5650@localhost> <3DB9B489.7080905@usa.net> X-Mailer: T-Online eMail 2.34 MIME-Version: 1.0 Date: Sat, 26 Oct 2002 20:02:51 +0200 Message-ID: <185VGt-1EYC8mC@fwd07.sul.t-online.com> X-Sender: 0482183881-0001@t-dialin.net Subject: LF: vicious circle Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.9 required=5.0tests=FROM_ENDS_IN_NUMS,FROM_STARTS_WITH_NUMS,REFERENCES, SPAM_PHRASE_00_01,USER_AGENT_TONLINEversion=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Hi All, I have got a theoretical problem: if I considerably change the output pwr of any tx - sw or lf - I have to readjust the matching equipment. more pwr means less inductivity to readjust the resonance of the aerial if the aerial is a dipole (sw) or a inv. L (lf). but - more pwr the more capacity to readjust the resonance if I use the TX-loop (lf; 70m long, 12m up and 2m above ground, two windings). is it the charge caused by the E- or H-field "on the spot" (as ON7YD wld put it)? If so, why have I to increase the impedance in one case and to decrease it in the other? does the reader have an answer or does he know where I can look up the theorems? is there any theorem? regards and tks in advc Uwe/dj8wx