X-Virus-Scanned: clean according to Sophos on Logan.com X-SpamCatcher-Score: 2 [X] Return-Path: Sender: To: lml@lancaironline.net Date: Thu, 17 May 2007 18:47:02 -0400 Message-ID: X-Original-Return-Path: Received: from mx2.pshift.com ([216.57.116.7] verified) by logan.com (CommuniGate Pro SMTP 5.1.8) with ESMTP id 2050244 for lml@lancaironline.net; Thu, 17 May 2007 16:40:39 -0400 Received-SPF: none receiver=logan.com; client-ip=216.57.116.7; envelope-from=colyncase@earthlink.net Received: from ccaselt2 (unverified [216.57.118.92]) by mx2.pshift.com (Vircom SMTPRS 4.4.571.23) with SMTP id for ; Thu, 17 May 2007 16:40:16 -0400 X-Modus-BlackList: 216.57.118.92=OK;colyncase@earthlink.net=OK X-Modus-RBL: 216.57.118.92=Excluded X-Modus-Trusted: 216.57.118.92=NO X-Modus-Audit: FALSE;0;0;0 X-Original-Message-ID: <013101c798c3$89ee9ef0$0302a8c0@nvidia.com> From: "Colyn Case on earthlink" X-Original-To: "Lancair Mailing List" References: Subject: Re: [LML] Periodic Chelton GPS Failure...Any Ideas? X-Original-Date: Thu, 17 May 2007 13:39:59 -0700 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_012E_01C79888.DD45ECB0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3028 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028 This is a multi-part message in MIME format. ------=_NextPart_000_012E_01C79888.DD45ECB0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I'll be flying along and will get a "GPS Failure" announcement with=20 > loss of terrain info, plus DR (dead reakoning) counter. Jeff, you would want to turn to the satellite page on the gx60. I don't have a gx60 but on page 7-17 of the user manual there' s a = display page shown that shows the number of "healthy" satellites. Another approach would be to get a 396 and put the antenna right where = the gx60 one is and turn to the satellite page. This will actually give = you a map of the satellites and their signal strength so you'll be able = to determine the obstruction. My gps antennas are under the glass (as opposed carbon) part of the = fuselage just in front of the vstab. I haven't seen this problem. I = would expect that large parts of the sky behind you are obstructed by = the cabin roof. Colyn ------=_NextPart_000_012E_01C79888.DD45ECB0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

I'll be flying along and will = get a "GPS=20 Failure" announcement with
> loss of terrain info, plus DR (dead=20 reakoning) counter.

Jeff, you would want to turn to the = satellite page=20 on the gx60.

I don't have a gx60 but on page 7-17 of = the user=20 manual there' s a display page shown that shows the number of "healthy"=20 satellites.

Another approach would be to get a 396 = and put the=20 antenna right where the gx60 one is and turn to the satellite = page. This=20 will actually give you a map of the satellites and their signal strength = so=20 you'll be able to determine the obstruction.

My gps antennas are under the glass (as = opposed=20 carbon) part of the fuselage just in front of the vstab. I haven't = seen=20 this problem. I would expect that large parts of the sky behind = you are=20 obstructed by the cabin roof.

Colyn

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