X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 14 Feb 2006 13:18:49 -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 984359 for lml@lancaironline.net; Tue, 14 Feb 2006 09:23:53 -0500 Received-SPF: none receiver=logan.com; client-ip=66.35.72.5; envelope-from=lancair@ustek.com Received: from [192.168.2.113] ([70.61.176.138]) by mail.cave.net (VisNetic.MailServer.v7.2.4.1) with ASMTP id CQN38002 for ; Tue, 14 Feb 2006 09:23:03 -0500 X-Original-Message-ID: <43F1E7C8.2080606@ustek.com> X-Original-Date: Tue, 14 Feb 2006 09:23:04 -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] My solution to Comm Antenna ground plane References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit After discussions with Ryan (TCAD and Stormscope folks) and learning of their test failures with painted ground planes, I started on a new tack. Nickel metallized graphite fibers are used effectively for EMI shielding so I contacted a supplier to discuss. They had no actual antenna experience but gave me a sample of the fabric to test. We made an evaluation plaque by encorporating two veils into a carbon fiber wet layup and sent it to a field site for antenna testing. Results were quite favorable compared to a solid Al plane so that is the route that I will travel. I'll let the LML know how it works out in a real environment and after some time aging and undergoing repeated pressurization stresses. Robert M. Simon, ES-P N301ES