X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 03 Feb 2009 19:30:59 -0500 Message-ID: X-Original-Return-Path: Received: from col0-omc3-s2.col0.hotmail.com ([65.55.34.140] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3475011 for lml@lancaironline.net; Tue, 03 Feb 2009 16:50:20 -0500 Received-SPF: pass receiver=logan.com; client-ip=65.55.34.140; envelope-from=gt_phantom@hotmail.com Received: from COL101-W48 ([65.55.34.137]) by col0-omc3-s2.col0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Tue, 3 Feb 2009 13:49:46 -0800 X-Original-Message-ID: X-Original-Return-Path: gt_phantom@hotmail.com Content-Type: multipart/alternative; boundary="_e6b249ff-54a1-4f3a-abb7-0301a89aa70e_" X-Originating-IP: [72.145.255.149] From: GT PHANTOM X-Original-To: Subject: Which Antenna? X-Original-Date: Tue, 3 Feb 2009 16:49:46 -0500 Importance: Normal MIME-Version: 1.0 X-OriginalArrivalTime: 03 Feb 2009 21:49:46.0687 (UTC) FILETIME=[5499CCF0:01C98649] --_e6b249ff-54a1-4f3a-abb7-0301a89aa70e_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I've got a Lancair 320=2C and it seems likely that the original comm antenna buried in the vertical stab is beyond usable (either poorly installed originally=2C or poor ground plane - but in any event no way to dig it out and fix it). There is an old Loran antenna in the tail (no longer used) which is virtually identical in dimensions to a Comant CI 122 bent whip. It doesn't currently have a ground plane=2C but I could stick one in there. I have also heard of some kind of flexible antenna that gets glued to the insides of the tailcone. Questions: - What antenna works best (given that it is too late to embed in the vertical stab)? - What size ground plane do I use? - Do I ground the ground plane and=2C if so=2C where? - Do I allow the antenna wire shield ground to electrically connect to the ground plane=2C or should they be insulated? (I can imagine grounding the ground plane to the battery in back=2C having it contact the antenna shield which grounds to the bus in front=2C and having that situation cause a loop which might have adverse consequences) - How critical is it to use the newest kind of coax? The old coax is embedded down the side of the plane away from all signal wires=2C and if I replaced it I'd have to run the new one up the center with a lot of other wires... Thanks all! _________________________________________________________________ Hotmail=AE goes where you go. On a PC=2C on the Web=2C on your phone.=20 http://www.windowslive-hotmail.com/learnmore/versatility.aspx#mobile?ocid= =3DTXT_TAGHM_WL_HM_versatility_121208 = --_e6b249ff-54a1-4f3a-abb7-0301a89aa70e_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I've got a Lancair 320=2C and it seems likely that the original comm antenna buried in the vertical stab is beyond usable (either poorly installed originally=2C or poor ground plane - but in any event no way to dig it out and fix it).

There is an old Loran antenna in the tail (no longer used) which is virtually identical in dimensions to a Coma= nt CI 122 bent whip. =3B It doesn't currently have a ground plane=2C b= ut I could stick one in there.

I have also heard of some kind of flexible antenna that gets glued to the insides of the tailcone.

Questions:

- What antenna works best (given that it is too late to embed in the vertical stab)?
- What size ground plane do I use?
- Do I ground the ground plane and=2C if so=2C where?
- Do I allow the antenna wire shield ground to electrically connect to the ground plane=2C or should they be insulated? (I can imagine grounding the ground plane to the battery in back=2C having it contact the antenna shield which grounds to the bus in front=2C and having that situation cause a loop which might have adverse consequences)
- How critical is it to use the newest kind of coax? =3B The old coax i= s embedded down the side of the plane away from all signal wires=2C and if I replaced it I'd have to run the new one up the center with a lot of other wires...

Thanks all!

Hotmail=AE goes where you go. On a PC=2C on the Web=2C on your = phone. Se= e how. = --_e6b249ff-54a1-4f3a-abb7-0301a89aa70e_--