Return-Path: Received: (qmail 2960 invoked from network); 30 May 2003 11:29:46 -0000 Received: from netmail02.services.quay.plus.net (212.159.14.221) by mailstore with SMTP; 30 May 2003 11:29:46 -0000 Received: (qmail 20408 invoked by uid 10001); 30 May 2003 11:29:46 -0000 Received: from post.thorcom.com (193.82.116.70) by netmail02.services.quay.plus.net with SMTP; 30 May 2003 11:29:46 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.14) id 19Li4I-0000Jy-BX for rsgb_lf_group-outgoing@blacksheep.org; Fri, 30 May 2003 12:29:06 +0100 Received: from [195.92.193.19] (helo=cmailm3.svr.pol.co.uk) by post.thorcom.com with esmtp (Exim 4.14) id 19Li4E-0000Jp-41 for rsgb_lf_group@blacksheep.org; Fri, 30 May 2003 12:29:02 +0100 Received: from modem-65.atalante.dialup.pol.co.uk ([62.136.129.193] helo=f3a3a2) by cmailm3.svr.pol.co.uk with smtp (Exim 4.14) id 19Li4D-00064b-1e for rsgb_lf_group@blacksheep.org; Fri, 30 May 2003 12:29:01 +0100 Message-ID: <000b01c3269e$fdd83880$ea00a8c0@f3a3a2> From: "Laurie Mayhead" To: rsgb_lf_group@blacksheep.org Date: Fri, 30 May 2003 12:29:43 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re. Top loadoing-to short or not to short? Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.0 required=5.0tests=noneversion=2.53 X-Spam-Checker-Version: SpamAssassin 2.53 (1.174.2.15-2003-03-30-exp) X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rsgb_lf_group-outgoing@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Hi Laurence, I did not reply earlier on this subject since you were gettig very good advice from others. However there are one or two points that I should like to make which may prove helpfull. I agree that shorting the ends will not make any difference to the performance of the ant. but it might reduce possible corona ! I also agree that the vert wire should be a single wire but it ought to be as vertical as possible to keep its capacity to earth at a minimum. I notice that the tower is quite close(although you have moved the vert wire further away ) I think that the tower should be grounded to the very effectively to the bottom of the loading coil ie any capacitive current should be returned through a low loss connection to the Tx. If this is done there will be no losses associated with the tower(or not too many ). Finally I don't know much about your ground there but my experience is that on poor ground like mine you should get as much wire in the air as possible " This wire does'nt need to be in a straight line mine zig zags between trees but I always try to cover "new" ground and recently discovered that it should be clear ground ie no bushes etc. Hope this all helps and look foreward to seeing a signal from KL. 73 Laurie.