X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Fri, 29 Sep 2006 13:54:51 -0400 Message-ID: X-Original-Return-Path: <5zq@cox.net> Received: from centrmmtao05.cox.net ([70.168.83.79] verified) by logan.com (CommuniGate Pro SMTP 5.1c.4) with ESMTP id 1426452 for lml@lancaironline.net; Fri, 29 Sep 2006 13:52:09 -0400 Received-SPF: none receiver=logan.com; client-ip=70.168.83.79; envelope-from=5zq@cox.net Received: from eastrmimpo01.cox.net ([68.1.16.119]) by centrmmtao05.cox.net (InterMail vM.6.01.06.01 201-2131-130-101-20060113) with ESMTP id <20060929175125.LZHU8328.centrmmtao05.cox.net@eastrmimpo01.cox.net> for ; Fri, 29 Sep 2006 13:51:25 -0400 Received: from OFFICE ([72.192.254.103]) by eastrmimpo01.cox.net with bizsmtp id UHqw1V00i2EdYPc0000000 Fri, 29 Sep 2006 13:51:19 -0400 X-Original-Message-ID: <000d01c6e3ef$d67bbc00$6401a8c0@OFFICE> From: "Bill&Sue" <5zq@cox.net> X-Original-To: "Lancair Mailing List" References: Subject: belly ground planes, IV X-Original-Date: Fri, 29 Sep 2006 13:51:02 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C6E3CE.4CF23E30" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C6E3CE.4CF23E30 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Listers, We have our IV upsidedown doing body work on the gear doors and belly. = It looks like a dead bug. I'd like to ask for some advice from those of you with antenna = knowledge. We're considering covering the belly with thin copper screen = to act as a ground plane. My guess is that one large ground plane is = probably better than several smaller ones. Is this a reasonable = assumption? If so, what is the best way to accomplish it? I'm thinking = that running a bead of solder down the x and y axis and connecting a = grounding strap to the intersection would povide good conuctivity of = each strand to airplane ground. To attach the screen I'm thinking about = imbeding it in a thin layer of micro with maybe a 1 bid of glass or = carbon on top (well, actually on bottom but you know what I mean).=20 Have any of you used this or a similar method? How'd it turn out? Does = this make sense electrically and/or structurally? Is it overkill?=20 I know that one alternative is the conductive paint but I've heard that = this may not be the best choice since it is reported to degrade over = time. Would the carbon itself provide adequate conductivity for a ground = plane? (I'm guessing not) Finally, any good sources of copper screen? Thanks Guys.=20 Bill Harelson N5ZQ 320 1,250 hrs. N6ZQ IV 11.79001 % ------=_NextPart_000_000A_01C6E3CE.4CF23E30 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hello Listers,
 
We have our IV upsidedown doing body = work on the=20 gear doors and belly.  It looks like a dead bug.
 
I'd like to ask for some advice from = those=20 of you with antenna knowledge. We're considering covering the belly = with=20 thin copper screen to act as a ground plane. My guess is that one = large=20 ground plane is probably better than several smaller ones. Is this a = reasonable=20 assumption? If so, what is the best way to accomplish it? I'm thinking = that=20 running a bead of solder down the x and y=20 axis and connecting a grounding strap to the intersection would povide = good=20 conuctivity of each strand to airplane ground. To attach the screen I'm = thinking=20 about imbeding it in a thin layer of micro with maybe a 1 bid of glass = or carbon=20 on top (well, actually on bottom but you know what I mean). =
 
Have any of you used this or a = similar=20 method? How'd it turn out? Does this make sense electrically and/or = structurally? Is it overkill?
 
I know that one alternative is = the conductive=20 paint but I've heard that this may not be the best choice since it is = reported=20 to degrade over time. Would the carbon itself provide adequate = conductivity for=20 a ground plane? (I'm guessing not)
 
Finally, any good sources of = copper=20 screen?
 
Thanks Guys.
 
 
Bill Harelson
N5ZQ 320 1,250 = hrs.
N6ZQ  IV 11.79001=20 %
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