X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 18 Feb 2006 01:51:40 -0500 Message-ID: X-Original-Return-Path: Received: from proxy1.addr.com ([38.113.244.28] verified) by logan.com (CommuniGate Pro SMTP 5.0.8) with ESMTPS id 988619 for lml@lancaironline.net; Fri, 17 Feb 2006 02:36:44 -0500 Received-SPF: none receiver=logan.com; client-ip=38.113.244.28; envelope-from=timothy.ong@leadingedgeaircraft.com Received: from COMPUTER2 (bc11810.bendcable.com [66.220.118.10]) by proxy1.addr.com (8.12.8/8.12.8/Submit) with SMTP id k1H7ZkXh057321 for ; Thu, 16 Feb 2006 23:35:48 -0800 (PST) X-Original-Message-ID: <017001c63394$07014d20$6401a8c0@COMPUTER2> From: "Timothy Ong" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: My solution to Comm Antenna ground plane-ACTUAL TESTING X-Original-Date: Thu, 16 Feb 2006 23:30:27 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4807.1700 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4910.0300 X-ADDRSpamFilter: Passed, probability (0%) X-ADDRSignature: D0A966A Just some other data points as we have done quite a bit of testing in the last year on ground planes. Conductive paint ground plane with external com antenna VSWR 1.15:1-1.3:1 at mid freq. Copper mesh or aluminum tape ground plane on inside VSWR 1.7:1-2.0:1 at mid freq. No ground plane only using carbon VSWR 1:8:1-2.4:1 at mid freq. These were actual tests conducted on multiple airframes using a digital VSWR meter. This is for com. We have had excellent results with com, nav, transponder, and TCAD antennas using the conductive paint. I have heard that the paint can breakdown overtime. I'm not sure how this can happen under a coat of WLS primer, but I'm sure someone will educate me :) So far we have a couple of airplanes now that are 2+ years old with no appreciable degradation. Regards, Timothy Ong