Return-Path: Received: (qmail 1541 invoked from network); 7 May 2001 07:56:07 -0000 Received: from unknown (HELO murphys-inbound.servers.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 7 May 2001 07:56:07 -0000 Received: (qmail 18613 invoked from network); 7 May 2001 07:56:05 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 7 May 2001 07:56:05 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 14wflm-0001Br-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 07 May 2001 08:49:26 +0100 Received: from mail4.svr.pol.co.uk ([195.92.193.211]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 14wfll-0001Bm-00 for rsgb_lf_group@blacksheep.org; Mon, 07 May 2001 08:49:25 +0100 Received: from modem-4.lemonpeel-angel.dialup.pol.co.uk ([62.137.37.4] helo=g3aqc) by mail4.svr.pol.co.uk with smtp (Exim 3.13 #0) id 14wflF-0004DG-00 for rsgb_lf_group@blacksheep.org; Mon, 07 May 2001 08:48:54 +0100 Message-ID: <001a01c0d6c1$d6ec0c80$0425893e@g3aqc> From: "Laurie Mayhead" To: rsgb_lf_group@blacksheep.org Subject: LF: Re. Measurment of antenna current Date: Mon, 7 May 2001 07:48:42 +0100 MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 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: Content-transfer-encoding: 8bit

Steve,

It seems to me that the current difference can only be due to

1) Radiation from the coil (unlikely)

2)LOSSY capacitance from the coil/feeder to surroundings.

I found that my Ant. current varied about 10% depending on wether it was raining (or have recently been raining). I thought at first that this was insulator leakage or wet trees,but eventually identified discovered that the brick wall close to my loading coil was the culprit.I now have a large sheet of alluminiun against the wall which is grounded.So although there is still a lot of capacity from the coil to this screen it is not LOSSY. Now there is no variation,or at least very little. I hope this helps.

73s Laurie.