Return-Path: Received: (qmail 27237 invoked from network); 27 Oct 2002 05:04:20 -0000 Content-Transfer-Encoding: 8bit Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 27 Oct 2002 05:04:20 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 1317 invoked from network); 27 Oct 2002 05:02:57 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 27 Oct 2002 05:02:57 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 185fXM-0006u5-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 27 Oct 2002 05:00:32 +0000 Received: from [212.164.44.2] (helo=astral.omskcity.com) by post.thorcom.com with esmtp (Exim 4.10) id 185fXM-0006tw-00 for rsgb_lf_group@blacksheep.org; Sun, 27 Oct 2002 05:00:32 +0000 Received: from fitec.omskcity.com (mu08.dialup2.infomsk.ru [212.164.44.120]) by astral.omskcity.com (8.9.3/8.9.3) with SMTP id KAA3dbb725d2bc2 for ; Sun, 27 Oct 2002 10:58:05 +0600 (OS) Date: Sun, 27 Oct 2002 11:57:25 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org In-reply-to: <185VGt-1EYC8mC@fwd07.sul.t-online.com> Message-ID: MIME-Version: 1.0 Subject: Re: LF: vicious circle Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Status: No, hits=-1.9 required=5.0tests=DATE_IN_FUTURE_06_12,EMAIL_ATTRIBUTION,IN_REP_TO, QUOTED_EMAIL_TEXT,SPAM_PHRASE_00_01,USER_AGENT_PINEversion=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Hi, Uwe and Group. On Sat, 26 Oct 2002, jannsen wrote: > > 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). Why You think "more power means less inductivity"? It's wrong! In general if pwr is changed the coupling betwin rf generator and antenna should be changed, not inductance. And coupling should be changed different way if pwr is increased by increasing of voltage or current. If You change pwr by simultaneosly increasing of voltage and current (constant output impedance) then You SOULD NOT readjast mutching equipment. 73 de RA9MB/Alex http://www.qsl.net/ra9mb