X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 04 Mar 2009 13:34:18 -0500 Message-ID: X-Original-Return-Path: Received: from imo-d22.mx.aol.com ([205.188.144.208] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTP id 3526907 for lml@lancaironline.net; Wed, 04 Mar 2009 11:33:02 -0500 Received: from N66mg@aol.com by imo-d22.mx.aol.com (mail_out_v39.1.) id q.c28.4fd0847c (14457) for ; Wed, 4 Mar 2009 11:32:54 -0500 (EST) From: N66mg@aol.com X-Original-Message-ID: X-Original-Date: Wed, 4 Mar 2009 11:32:19 EST Subject: Re: [LML] Re: TruTrak autopliot and RF X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1236184339" X-Mailer: AOL 9.1 sub 5003 X-Spam-Flag:NO -------------------------------1236184339 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Chris, I had the same problem in my Glasair and thought that it was something that I did. I told the avionics guys that installed the Trutrac auto pilot and they said that I was crazy, but it kept on happening, but not all the time that I used the com. They eventually installed a separate button on the panel and that I use to talk to the ATC, instead of the mic switch on the joy stick. That seems to have corrected the problem, at least on my Glasair. Michael n66mg In a message dated 3/4/2009 5:14:21 A.M. Pacific Standard Time, steve@oasissolutions.com writes: I used this and it helped: _http://www.vonero.com/index.php?/showproduct/853439_ (http://www.vonero.com/index.php?/showproduct/853439) Steve Richard Chris Zavatson wrote: A recent upgrade to more powerful com radios has introduced a bit of an undesirable problem with the Trutrak autopilot. When the auto pilot is engaged and the #2 radio is keyed, serious pitch oscillations occur. While the Trutrak installation materials discuss its relative immunity to RF, it does suggest shielding the lines to the control wheel steering switch. if interference is encountered. The radio upgrade included switching from RG58 to RG142, so the overall shielding is improved, however, the antenna for the #2 radio is much closer to the autopilot wiring and hardware than the #1 antenna. The interference appears to be be coming directly off the comm antenna and not from any 'leaks' on the way there. Are there any tried and true fixes for making the Trutrak immune to RF? I really didn't want to re-invent the wheel on this one. Chris Zavatson N91CZ L360std _www.N91CZ.com_ (http://www.n91cz.com/) -- For archives and unsub http://mail.lancaironline.net:81/lists/lml/List.html **************Need a job? Find employment help in your area. (http://yellowpages.aol.com/search?query=employment_agencies&ncid=emlcntusyelp00000005) -------------------------------1236184339 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
Chr= is, I had the same problem in my Glasair= and=20 thought that it was something that I did.  I told the avionics guys tha= t=20 installed the Trutrac auto pilot and they said that I was crazy, but=20= it=20 kept on happening, but not all the time  that I used the=20 com.  They eventually installed a separate button on the panel and that= I=20 use to talk to the ATC,  instead of the mic switch on the joy stick.&nb= sp;=20 That seems to have corrected the problem, at least on my Glasair. =20
Michael=20 n66mg
 
In a message dated 3/4/2009 5:14:21 A.M. Pacific Standard Time,=20 steve@oasissolutions.com writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>I used=20 this and it helped:  http://www.vo= nero.com/index.php?/showproduct/853439

Steve=20 Richard

Chris Zavatson wrote:=20
A recent upgrade to more powerful com radios has introduced a bit o= f an=20 undesirable problem with the Trutrak autopilot.  When the auto pilo= t is=20 engaged and the #2 radio is keyed, serious pitch oscillations occur.&nbs= p;=20 While the Trutrak installation materials discuss its relative immunity t= o=20 RF, it does suggest shielding the lines to the control wheel steering=20 switch. if interference is encountered.  The radio upgrade included= =20 switching from RG58 to RG142, so the overall shielding is improved, howe= ver,=20 the antenna for the #2 radio is much closer to the autopilot wiring= and=20 hardware than the #1 antenna.  The interference appears to be=20 be coming directly off the comm antenna and not from any=20 'leaks' on the way there.
Are there any tried and true fixes for making the Trutrak= =20 immune to RF?  I really didn't want to re-invent the wheel on=20= this=20 one. 
 
Chris Zavatson
N91CZ
L360std

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