Return-Path: Received: (qmail 21911 invoked from network); 17 Sep 1999 09:50:24 +0100 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by guiness.force9.net with SMTP; 17 Sep 1999 09:50:24 +0100 Received: (qmail 23238 invoked from network); 17 Sep 1999 08:54:41 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by magnet.plus.net.uk with SMTP; 17 Sep 1999 08:54:41 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 11RtYz-0006Ds-00 for rsgb_lf_group-outgoing@blacksheep.org; Fri, 17 Sep 1999 09:40:13 +0100 Received: from mserv1c.u-net.net ([195.102.240.33]) by post.thorcom.com with esmtp (Exim 3.02 #1) id 11RtYy-0006Dn-00 for rsgb_lf_group@blacksheep.org; Fri, 17 Sep 1999 09:40:12 +0100 X-Priority: 3 X-MSMail-Priority: Normal Received: from rsgb.u-net.com ([195.102.80.225] helo=rsgb.org.uk) by mserv1c.u-net.net with smtp (Exim 2.10 #34) id 11RuRu-0003gS-00 for rsgb_lf_group@blacksheep.org; Fri, 17 Sep 1999 09:36:59 +0000 Received: from miked by rsgb.org.uk with SMTP (MDaemon.v2.7.SP5.R) for ; Fri, 17 Sep 1999 09:33:43 +0100 From: "Mike Dennison" X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Organization: Radio Society of Great Britain To: rsgb_lf_group@blacksheep.org Date: Fri, 17 Sep 1999 09:33:42 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 8bit Subject: Re: LF: Dick & Peter's simulations In-reply-to: <004701bf0092$9bd02d40$6801063e@default> X-Mailer: Pegasus Mail for Win32 (v3.11) X-MDaemon-Deliver-To: rsgb_lf_group@blacksheep.org X-Return-Path: miked@mail.rsgbhq Message-ID: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: A really interesting discussion, and some useful data, though as with all computer simulations it is vital to include some practical knowledge so as not to be misled by the results. Thanks, Dick and Peter for your work. G3NYK wrote: I presume the vertical > section should be at least its own height away from buildings, masts etc. > but is a smaller spacing workable? You are probably right, but for practical reasons my vertical section is 1m from the house. All I can say is that it works, despite the effects of electrical wiring and water pipes. Some 5m is above the house and this may help. I have run a similar arangement portable and in the clear without a massive improvement. Mike, G3XDV (IO91VT) http://www.dennison.demon.co.uk/activity.htm