Return-Path: Received: (qmail 12120 invoked from network); 21 May 2000 23:41:13 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by teachers.core.plus.net.uk with SMTP; 21 May 2000 23:41:13 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12tfAy-0008A0-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 22 May 2000 00:30:28 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from imo-d09.mx.aol.com ([205.188.157.41]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12tfAx-00089V-00 for rsgb_lf_group@blacksheep.org; Mon, 22 May 2000 00:30:27 +0100 Received: from WarmSpgs@aol.com by imo-d09.mx.aol.com (mail_out_v27.9.) id l.9f.5a550c2 (9823) for ; Sun, 21 May 2000 19:29:51 -0400 (EDT) X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 From: WarmSpgs@aol.com Message-ID: <9f.5a550c2.2659cb6e@aol.com> Date: Sun, 21 May 2000 19:29:50 EDT Subject: Re: LF: Re. Decca Mast (G3KEV) To: rsgb_lf_group@blacksheep.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit X-Mailer: AOL 4.0 for Windows 95 sub 102 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: In a message dated 5/21/00 3:09:53 PM Eastern Daylight Time, LAURIE@g3aqc.freeserve.co.uk writes: << My point however is that the "small ant" at Puckeridge can only be described as a vertical with top loading,and that it will radiate as such and in no other way. >> How can it _not_ radiate some other way? The top loading is not symmetrical. It is a second antenna grafted onto the vertical section. Plot out the current flow, sketch a few vectors...yes, the radiation pattern will be distinctly different from a plain vertical. What I'd really like to see here are signal reports from more distant listeners in various directions to see if the reported anomaly holds for other takeoff angles, and also a few figures on how the equivalent input power was determined, if possible. 73, John KD4IDY