Return-Path: Received: (qmail 29882 invoked from network); 3 May 2000 16:35:19 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by grants.core.plus.net.uk with SMTP; 3 May 2000 16:35:19 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12n1zz-00017Z-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 03 May 2000 17:27:43 +0100 Received: from helios.herts.ac.uk ([147.197.200.2]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12n1zy-00017U-00 for rsgb_lf_group@blacksheep.org; Wed, 03 May 2000 17:27:42 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from [147.197.200.44] (helo=gemini) by helios.herts.ac.uk with esmtp (Exim 3.11 #1) id 12n1wk-0003cY-00 for rsgb_lf_group@blacksheep.org; Wed, 03 May 2000 17:24:22 +0100 Message-ID: <11532.200005031633@gemini> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 From: "James Moritz" Organization: University of Hertfordshire To: rsgb_lf_group@blacksheep.org Date: Wed, 3 May 2000 17:33:54 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: LF: Re. Beacon Power control. In-reply-to: <000201bfb515$8e7a8cc0$dd24893e@lvm> X-Mailer: Pegasus Mail for Win32 (v3.11) Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: From: "LAWRENCE MAYHEAD" To: "rsgb lf group" Subject: LF: Re. Beacon Power control. Date sent: Wed, 3 May 2000 16:37:07 +0100 Send reply to: rsgb_lf_group@blacksheep.org > Hi All, > Perhaps this is just too naive-but would it not be possible to put a > resistor in series to swamp the Ant.system resistance so that changes in > it have little or at least less effect on the current! This would of > course require more power to get the required current but for such a low > power beacon this should not be too difficult. 73s Laurie. > Plus it would buffer the TX against changes in load - or, looked at another way, it would reduce the Q of the antenna so tuning would be less critical. Sounds like a great idea. Cheers, Jim Moritz 73 de M0BMU