Return-Path: Received: (qmail 23262 invoked from network); 22 Sep 2002 10:00:21 -0000 Received: from warrior.services.quay.plus.net (212.159.14.227) by mailstore with SMTP; 22 Sep 2002 10:00:21 -0000 Received: (qmail 8445 invoked from network); 22 Sep 2002 10:00:06 -0000 Received: from post.thorcom.com (193.82.116.70) by warrior.services.quay.plus.net with SMTP; 22 Sep 2002 10:00:06 -0000 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 17t3WQ-0005LY-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 22 Sep 2002 10:59:26 +0100 Received: from [210.86.15.147] (helo=mta204-rme.xtra.co.nz) by post.thorcom.com with esmtp (Exim 4.10) id 17t3WO-0005LO-00 for rsgb_lf_group@blacksheep.org; Sun, 22 Sep 2002 10:59:24 +0100 Received: from mta1-rme.xtra.co.nz ([210.86.15.140]) by mta204-rme.xtra.co.nz with ESMTP id <20020922095852.EHYB24628.mta204-rme.xtra.co.nz@mta1-rme.xtra.co.nz> for ; Sun, 22 Sep 2002 21:58:52 +1200 Received: from xtr743187 ([210.54.99.50]) by mta1-rme.xtra.co.nz with SMTP id <20020922095851.NQOD13892.mta1-rme.xtra.co.nz@xtr743187> for ; Sun, 22 Sep 2002 21:58:51 +1200 Message-ID: <000d01c2621f$98d1f500$326336d2@xtr743187> From: "Vernall" To: rsgb_lf_group@blacksheep.org References: <000801c26216$de1adc20$9f0b7ad5@jackie> Date: Sun, 22 Sep 2002 22:04:56 +1200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2919.6600 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Subject: LF: Re: Proximity effects Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=-0.1 required=5.0tests=FROM_NAME_NO_SPACESversion=2.31 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Steve, > I'm struggling with a poor set of options for an aerial at this house. The > greatest vertical section I can get while still allowing top loading is > 8-9m, but the lower 3-4m would be up against brickwork. How much does this > affect radiation compared with, say, 6m vertical clear of buildings (with > the same toploading)? It's fun trying, even if proximity effect robs you of a few dB. Give it a go, assess results and then decide what betterment route to take. 73, Bob ZL2CA