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 crystalvlin1.inetu.net ([209.235.254.29] verified) by logan.com (CommuniGate Pro SMTP 5.2.12) with ESMTPS id 3526698 for lml@lancaironline.net; Wed, 04 Mar 2009 09:40:19 -0500 Received-SPF: none receiver=logan.com; client-ip=209.235.254.29; envelope-from=ronr@advanceddesign.com Received: (qmail 14760 invoked by uid 89); 4 Mar 2009 14:39:33 -0000 Received: from unknown (HELO adm0019) (64.140.206.227) by crystalvlin1.inetu.net with SMTP; 4 Mar 2009 14:39:33 -0000 X-Original-Message-ID: <005e01c99cd6$a2fe50c0$f901a8c0@adm2k.local> From: "Ron Raby" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Re: TruTrak autopliot and RF X-Original-Date: Wed, 4 Mar 2009 09:36:42 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_005B_01C99CAC.B9E5C180" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2905 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_005B_01C99CAC.B9E5C180 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Chris Take a look at these inline RF connectors. I was able to get samples. = They made a big difference for me. I only put one on the 37 pin = connector on the back. I tried torriods first and they did nothing. Regards=20 Ron Raby http://www.amphenolcanada.com/ FCC17-E09AD-2D0 FCC-17-B25AD-2D0 FCC17-C37AD-2D0 ----- Original Message -----=20 From: GT Phantom=20 To: lml@lancaironline.net=20 Sent: Wednesday, March 04, 2009 8:13 AM Subject: [LML] Re: TruTrak autopliot and RF Hi Chris, This is a known issue with TruTrak, and everyone seems to be stumped. = There is a rather long discussion about it on the Van's site here: http://www.vansairforce.com/community/showthread.php?t=3D20487 TruTrak is aware of it and is searching for a solution - and has been = for 4 years when I flew out there in my previous Lancair seeking a fix. The good news? Once you get used to it, it is very predictable and = you tend to learn to simply hold the stick still while transmitting. :( Best regards, Bill Reister Chris Zavatson wrote:=20 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.=20 Chris Zavatson N91CZ L360std www.N91CZ.com -- For archives and unsub = http://mail.lancaironline.net:81/lists/lml/List.html ------=_NextPart_000_005B_01C99CAC.B9E5C180 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Chris
 
Take a look at these inline RF = connectors. I was=20 able to get samples. They made a big difference for me. I only put one = on the 37=20 pin connector on the back. I tried torriods first and they did=20 nothing.
 
Regards
 
Ron Raby
 
 
http://www.amphenolcanada.com/
 
FCC17-E09AD-2D0
FCC-17-B25AD-2D0
FCC17-C37AD-2D0
----- Original Message -----
From:=20 GT=20 Phantom
Sent: Wednesday, March 04, 2009 = 8:13=20 AM
Subject: [LML] Re: TruTrak = autopliot and=20 RF

Hi Chris,

This is a known issue with TruTrak, = and=20 everyone seems to be stumped.  There is a rather long discussion = about it=20 on the Van's site here:

h= ttp://www.vansairforce.com/community/showthread.php?t=3D20487

= TruTrak=20 is aware of it and is searching for a solution - and has been for 4 = years when=20 I flew out there in my previous Lancair seeking a fix.

The good = news?  Once you get used to it, it is very predictable and you = tend to=20 learn to simply hold the stick still while = transmitting.

:(

Best=20 regards,

Bill Reister


Chris Zavatson wrote:=20
A recent upgrade to more powerful com radios has introduced a = bit of an=20 undesirable problem with the Trutrak autopilot.  When the auto = pilot is=20 engaged and the #2 radio is keyed, serious pitch oscillations = occur. =20 While the Trutrak installation materials discuss its relative = immunity to=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, = however,=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 this=20 one. 
 
Chris Zavatson
N91CZ
L360std

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