X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 17 Jan 2006 01:44:01 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d20.mx.aol.com ([205.188.139.136] verified) by logan.com (CommuniGate Pro SMTP 5.0.6) with ESMTP id 928428 for lml@lancaironline.net; Mon, 16 Jan 2006 10:55:11 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.188.139.136; envelope-from=Sky2high@aol.com Received: from Sky2high@aol.com by imo-d20.mx.aol.com (mail_out_v38_r6.3.) id q.2da.decb10 (3924) for ; Mon, 16 Jan 2006 10:54:21 -0500 (EST) From: Sky2high@aol.com X-Original-Message-ID: <2da.decb10.30fd1bac@aol.com> X-Original-Date: Mon, 16 Jan 2006 10:54:20 EST Subject: Re: [LML] COM interference with TruTrak autopilot X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1137426860" X-Mailer: 9.0 Security Edition for Windows sub 5300 X-Spam-Flag: NO -------------------------------1137426860 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 1/15/2006 12:33:32 A.M. Central Standard Time, Peter.Sokolowski@t-online.de writes: I need some help wrt interference I discovered between my Coms and my autopilot. The interference is frequency depending, with the worst in the high and lowest. With the autopilot engaged triggering the Com elevator goes up and ailerons initiating a right turn. I have used high quality HF cables and the distance between the Com and the TruTrak is about 3-5 inch. The HF cables are going in parallel to the (unshielded) ones from the computer to the Servos (2-axis). Any recomendation hints ? Peter, You have just entered the dark side. Black Art is now required assuming there is no fault in shielding. I have had some success in reducing or eliminating com interference with the VM computer temperature processing circuitry by moving com antenna cables to different orientations or bundling them differently. If you can get the failure on the ground, try this and see if there is a change. Scott Krueger AKA Grayhawk Lancair N92EX IO320 SB 89/96 Aurora, IL (KARR) -------------------------------1137426860 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

In a message dated 1/15/2006 12:33:32 A.M. Central Standard Time,=20 Peter.Sokolowski@t-online.de writes:

<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

I need some help wrt interference I discovered between my Coms and my=20 autopilot. The interference is frequency depending, with the worst in the=20= high=20 and lowest. With the autopilot engaged triggering the Com elevator goes up= and=20 ailerons initiating a right turn. I have used high quality HF cables and t= he=20 distance between the Com and the TruTrak is about 3-5 inch. The HF cables=20= are=20 going in parallel to the (unshielded) ones from the computer to the Servos= =20 (2-axis).

Any recomendation hints ?

Peter,

You have just entered the dark side. Black Art is now required=20 assuming there is no fault in shielding. I have had some success in=20 reducing or eliminating com interference with the VM computer temperature=20 processing circuitry by moving com antenna cables to different orientat= ions=20 or bundling them differently. If you can get the failure on the ground, try=20= this=20 and see if there is a change.=20

Scott Krueger=20 AKA Grayhawk
Lancair N92EX IO320 SB 89/96
Aurora, IL=20 (KARR)

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