X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 27 Oct 2005 15:35:03 -0400 Message-ID: X-Original-Return-Path: Received: from systems3.net ([68.98.211.24] verified) by logan.com (CommuniGate Pro SMTP 5.0c7) with ESMTPS id 790413 for lml@lancaironline.net; Thu, 27 Oct 2005 11:14:49 -0400 Received-SPF: none receiver=logan.com; client-ip=68.98.211.24; envelope-from=cberland@systems3.net Received: from systems0d3b724 ([192.168.1.81]) by systems3.net (8.13.4/8.13.4/Debian-3) with SMTP id j9RFD1gB025665 for ; Thu, 27 Oct 2005 08:13:01 -0700 X-Original-Message-ID: <001801c5db08$71b5fa60$5101a8c0@systems0d3b724> From: "Craig Berland" X-Original-To: "Lancair Mail List" Subject: [LML] TCAD Antenna's on a Legacy X-Original-Date: Thu, 27 Oct 2005 08:09:31 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0015_01C5DACD.C23FA930" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1506 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 X-Virus-Scanned: ClamAV 0.86.2/1148/Tue Oct 25 12:34:12 2005 on systems3.net X-Virus-Status: Clean This is a multi-part message in MIME format. ------=_NextPart_000_0015_01C5DACD.C23FA930 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ron said: I need some advice on where to place the TCAD antenna's on a = Legacy. Ron I feel your pain. I have been working on putting external antennas = on my IV-P for 3 months. Nobody wants to give much advice. Here's what = I have peened out of Ryan and Lancair Avionics. The top antenna should = be at the highest point of the fuselage so as to not block its = visibility fore and aft. On the IV-P this is near the door. The lower = antenna just needs to be 24 inches from any other antenna. If you have = to violate this dimension, make sure it is not relative to the = transponder antenna. They do not like each other due to similar = frequencies. All antennas want a 36 inch diameter ground plane. I have = chose to use the "paint on" ground plane. You do not use the rubber = antenna pads when using the paint on ground plane. Even on the IV-P = there is not enough room to get 36 inch ground planes on all antennas. = I have two com antennas, transponder and TCAD antenna on the belly. I = do have 24 inches from the TCAD to any other antenna. This required = moving the 2nd com antenna back behind the main gear doors, similar to = the location used on the Columbia. The next big thing is making sure = the antennas do not interfere with "other stuff" inside the fuselage. = I'm still concerned about this. Hope there is some new bit of info = here. Craig Berland ------=_NextPart_000_0015_01C5DACD.C23FA930 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Ron said: I need some = advice on where=20 to place the TCAD antenna's on a Legacy.

Ron I feel your = pain. I=20 have been working on putting external antennas on my IV-P for 3 = months. =20 Nobody wants to give much advice. Here's what I have peened = out of=20 Ryan and Lancair Avionics. The top antenna should be at the = highest point=20 of the fuselage so as to not block its visibility fore and aft. On = the=20 IV-P this is near the door. The lower antenna just needs to = be 24=20 inches from any other antenna. If you have to violate this = dimension, make=20 sure it is not relative to the transponder antenna. They do not = like each=20 other due to similar frequencies. All antennas want a 36 inch = diameter ground plane. I have chose to use the "paint on" ground=20 plane. You do not use the rubber antenna pads when using the paint = on=20 ground plane. Even on the IV-P there is not enough room to get 36 = inch=20 ground planes on all antennas. I have two com antennas, = transponder and=20 TCAD antenna on the belly. I do have 24 inches from the TCAD to = any other=20 antenna. This required moving the 2nd com antenna back behind the = main=20 gear doors, similar to the location used on the Columbia. The next = big=20 thing is making sure the antennas do not interfere with "other stuff" = inside the=20 fuselage. I'm still concerned about this. Hope there is=20 some new bit of info here.

Craig=20 Berland

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