X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from elasmtp-scoter.atl.sa.earthlink.net ([209.86.89.67] verified) by logan.com (CommuniGate Pro SMTP 6.0.7) with ESMTP id 6577112 for lml@lancaironline.net; Tue, 05 Nov 2013 08:36:47 -0500 Received-SPF: none receiver=logan.com; client-ip=209.86.89.67; envelope-from=colyncase@earthlink.net DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=BFT0PByMz7t6suXWVMDOjt6cZkQ7PVDXy/8srkrehJ1ixMUwqYZe4ZEC1kigWPfH; h=Received:From:Mime-Version:Content-Type:Subject:Date:In-Reply-To:To:References:Message-Id:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [70.16.215.180] (helo=[192.168.1.24]) by elasmtp-scoter.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1Vdgnl-00055X-Ph for lml@lancaironline.net; Tue, 05 Nov 2013 08:36:14 -0500 From: Colyn Case Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: multipart/alternative; boundary=Apple-Mail-73--523036137 Subject: Re: [LML] TXPDR antenna Date: Tue, 5 Nov 2013 08:36:13 -0500 In-Reply-To: To: "Lancair Mailing List" References: Message-Id: <8CB10891-E01A-44F4-B20F-23B5508A3708@earthlink.net> X-Mailer: Apple Mail (2.1085) X-ELNK-Trace: 63d5d3452847f8b1d6dd28457998182d7e972de0d01da9409594ba92ee3eece64b733f037ced66f6350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 70.16.215.180 --Apple-Mail-73--523036137 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii John, I'm trying to figure out how a xponder antenna would be between = the rudder pedals and the firewall. Paint works at first but can fracture. A physically robust connection to the ground plane is best. If it were me I would take the antenna off (assuming it's outdoors like = it should be), grind through all the filler down to the carbon, install = a small sheet metal ground plane, provide a good strong contact area, = reassemble, and then bodywork over the remaining visible ground plane. Colyn On Nov 5, 2013, at 7:46 AM, John Barrett wrote: Hello all, Behind the rudder pedal the antenna for the transponder can be ID'd by = the brown Rg cable. ATC sometimes loses my squawk and I am thinking I need to add a ground = plane. Question for the group is if I can paint conductive paint around = the antenna and under neath the hydraulic lines as much as possible. = Will the Jeffco tank sealer interfere with effecitveness? Do I need to = remove the antenna or can the hub be painted to provide continuity? Any suggestions welcome. Thanks, John Sent from my iPad Begin forwarded message: > From: John Barrett <2thman1@gmail.com> > Date: November 4, 2013 at 12:47:56 PM PST > To: John Barrett >=20 >=20 >=20 > >=20 >=20 >=20 > Sent from my iPhone --Apple-Mail-73--523036137 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii

Hello = all,

Behind the rudder pedal the antenna for = the transponder can be ID'd by the brown Rg = cable.

ATC sometimes loses my squawk and I am = thinking I need to add a ground plane. Question for the group is = if I can paint conductive paint around the antenna and under neath the = hydraulic lines as much as possible. Will the Jeffco tank sealer = interfere with effecitveness? Do I need to remove the antenna or = can the hub be painted to provide = continuity?

Any suggestions = welcome.

Thanks,

John

Sent = from my iPad

Begin forwarded = message:

From: John = Barrett <2thman1@gmail.com>
Date: November 4, 2013 at 12:47:56 PM PST
To: John Barrett <jbarrett@carbinge.com>

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Sent from my = iPhone

= --Apple-Mail-73--523036137--