X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 21 Feb 2006 00:42:29 -0500 Message-ID: X-Original-Return-Path: Received: from mail.cave.net ([66.35.72.5] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTP id 991585 for lml@lancaironline.net; Mon, 20 Feb 2006 08:30:27 -0500 Received-SPF: none receiver=logan.com; client-ip=66.35.72.5; envelope-from=lancair@ustek.com Received: from [127.0.0.1] ([70.61.176.138]) by mail.cave.net (VisNetic.MailServer.v7.2.4.1) with ASMTP id CQN38002 for ; Mon, 20 Feb 2006 08:29:25 -0500 X-Original-Message-ID: <43F9C438.4020105@ustek.com> X-Original-Date: Mon, 20 Feb 2006 08:29:28 -0500 From: N301ES Reply-To: lancair@ustek.com Organization: USTEK Inc. User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 X-Original-To: Lancair Mailing List Subject: Re: [LML] Re: My solution to Comm Antenna ground plane-ACTUAL TESTING References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Bob Jude wrote: >Tim, This is just a little something to add to your ground plane study. >P.S. I used to do that stuff for a living. > > And in a former life, I used to develop systems to shield composites from EMI. One technique used was and still is conductice treatments including zinc arc spray and silver or nickel based conductive paint. The surface treatments usually showed better performance initially with 40 dB possible. After simulating aging of a couple years under indoor conditions the results were quite scattered, and usually quite a bit lower. That matches with the results reported by Ryan regarding silver/copper paints on composite aircraft. Robert M. Simon, ES-P N301ES (Flying in March - I hope!)