X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Sat, 02 Mar 2013 15:21:07 -0500 Message-ID: X-Original-Return-Path: Received: from fmailhost04.isp.att.net ([204.127.217.104] verified) by logan.com (CommuniGate Pro SMTP 6.0.1) with ESMTP id 6092452 for lml@lancaironline.net; Sat, 02 Mar 2013 15:18:52 -0500 Received-SPF: none receiver=logan.com; client-ip=204.127.217.104; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-98-85-148-245.mco.bellsouth.net[98.85.148.245]) by isp.att.net (frfwmhc04) with SMTP id <20130302201815H0400ap7h4e>; Sat, 2 Mar 2013 20:18:15 +0000 X-Originating-IP: [98.85.148.245] From: "Bill Bradburry" X-Original-To: "'Lancair Mailing List'" References: In-Reply-To: Subject: RE: [LML] Looking for advise on Antenna locations for IVP X-Original-Date: Sat, 2 Mar 2013 15:18:18 -0500 X-Original-Message-ID: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01CE1759.2BDBDB00" X-Mailer: Microsoft Office Outlook 11 Thread-Index: Ac4Xf2YBfaGdynRSTp+2VFIwcEU9JQAA0ofA X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 This is a multi-part message in MIME format. ------=_NextPart_000_0015_01CE1759.2BDBDB00 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Tom, If you can find a fiberglass area large enough to glue this antenna up, = it doesn=92t require a ground plane. it is about 5 inches long, =BE inch = wide. It mounts vertically. =20 http://www.aircraftspruce.com/catalog/avpages/antennasystems1.php =20 Bill B =20 _____ =20 From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of = Tom & Beth Sullivan Sent: Saturday, March 02, 2013 2:52 PM To: lml@lancaironline.net Subject: [LML] Looking for advise on Antenna locations for IVP =20 =20 I did a search on the LML archives and found a pot pouri of = questions, problems and tips, but much of the info had to do with glass planes (not carbon fiber), and I have some unique challenges as well. =20 I have already installed the Bob Archer com antenna in the vert/stab = and a nav antenna in the winglet (think just one). My unique challenge is = the fact that most of my belly between the gear and forward to the firewall = is fuel tank, so this area is unusable for antennas. I think, based on complaints, that I want at least one more com antenna. As shown in the attached picture, of the aft fuselage area with my A/C, there is no way = I can get a large ground plane in there. With carbon, do they usually = install it in the fuselage (wondering if the ground plane does any good behind = the carbon)? I may be able to get a "segmented" one in there, with part of = the ground plane inside the A/C condenser box, and run a ground strap or = strip between the segments at each end of the "pie slice" cut out for the A/C. Otherwise I am limited to a smaller ground plane, or installing one on = the outside of the skin (already body worked and in primer).=20 =20 Also, for the transponder and Marker beacon antennas, wondering if I = could place one at the rear of each wing fairing, as I think the ground plane (G/P) on those would be smaller, and the G/P could be "seen" easily = through the fiberglass of those fairings. My understanding is the gound plane = need only be as large in radius as the length of the actual antenna it is connected to? =20 Thanks in advance for any advice. =20 Tom Sullivan =20 =20 ------=_NextPart_000_0015_01CE1759.2BDBDB00 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Tom,

If you can find a fiberglass area = large enough to glue this antenna up, it doesn’t require a ground plane.=A0 it = is about 5 inches long, =BE inch wide.=A0 It mounts = vertically.

http://www.aircraftspruce.com/catalog/avpages/antennasystems1.php

Bill B

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Tom & Beth = Sullivan
Sent: Saturday, March 02, = 2013 2:52 PM
To: = lml@lancaironline.net
Subject: [LML] Looking = for advise on Antenna locations for IVP

I did a search on the LML archives and = found a pot pouri of questions, problems and tips, but much of the info had to = do with glass planes (not carbon fiber), and I have some unique challenges as = well.

I have already installed the Bob Archer = com antenna in the vert/stab and a nav antenna in the winglet (think just one). My unique challenge is the fact that most of my = belly between the gear and forward to the firewall is fuel tank, so this area = is unusable for antennas. I think, based on complaints, that I want = at least one more com antenna. As shown in the attached picture, of the aft fuselage area with my A/C, there is no way I can get a large ground = plane in there. With carbon, do they usually install it in the fuselage = (wondering if the ground plane does any good behind the carbon)? I may be = able to get a "segmented" one in there, with part of the ground plane = inside the A/C condenser box, and run a ground strap or strip between the segments at each end of the "pie slice" cut out for the = A/C. Otherwise I am limited to a smaller ground plane, or installing one on = the outside of the skin (already body worked and in = primer).

Also, for the transponder and Marker beacon = antennas, wondering if I could place one at the rear of each wing = fairing, as I think the ground plane (G/P) on those would be smaller, and the G/P = could be "seen" easily through the fiberglass of those = fairings. My understanding is the gound plane need only be as large in radius as = the length of the actual antenna it is connected = to?

Thanks in advance for any = advice.

Tom Sullivan

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