Return-Path: Received: (qmail 27579 invoked from network); 4 May 2000 20:59:06 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by redlabel.core.plus.net.uk with SMTP; 4 May 2000 20:59:06 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.02 #1) id 12nSXD-0006RK-00 for rsgb_lf_group-outgoing@blacksheep.org; Thu, 04 May 2000 21:47:47 +0100 Received: from postfix2.free.fr ([212.27.32.74] ident=postfix) by post.thorcom.com with esmtp (Exim 3.02 #1) id 12nSXB-0006RE-00 for rsgb_lf_group@blacksheep.org; Thu, 04 May 2000 21:47:46 +0100 Received: from f5maf (toulouse-1-5-130.dial.proxad.net [213.228.5.130]) by postfix2.free.fr (Postfix) with SMTP id A4BD674A3B for ; Thu, 4 May 2000 22:35:39 +0200 (MEST) Message-ID: <005e01bfb608$ab1f1dc0$4d05e4d5@f5maf> From: "f5maf" To: rsgb_lf_group@blacksheep.org Subject: Re: LF: GPS Signals Accurate Now!!! Date: Thu, 4 May 2000 22:37:34 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=windows-1252 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.72.3110.5 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Content-transfer-encoding: 8bit
Be carrful some time on EOM board ( TRIMBLE)
 the output PPS is open collector , you must use a 1K resistor (in pull up).
Normally PPS is automatic, any command.
Best 73 marc F5MAF
 
-----Message d'origine-----
De : Alberto di Bene <dibene@usa.net>
À : rsgb_lf_group@blacksheep.org <rsgb_lf_group@blacksheep.org>
Date : jeudi 4 mai 2000 17:44
Objet : Re: LF: GPS Signals Accurate Now!!!

>While we are discussing GPS, I have a question for all of you.
>I bought a few months ago an OEM 5000  GPS board, made
>circa 1993 by Magellan, because someone had told me that
>on the interface there were available the 1 pps signal derived
>from the received signals from the satellites, with the accuracy
>and stability of their Cesium clocks, +/- the SA.
>
>I was intending to homebrew something similar to the Shera
>project appeared in a past issue of QST.
>
>I have been unable to find that 1 pps signal, however. It just seems
>not to be present on the interface. But there is a hope.
>A few pins do not have signal on them, as seen on the 'scope,
>but they have traces on the PCB leading somewhere. My last hope
>is that the 1 pps signal must be enabled by some command to the
>GPS unit.
>
>Can anybody shed some light on this ? Anybody on this list that
>has experience with the Magellan OM 5000 ? Thanks for any advice.
>
>Alberto    I2PHD
>
>
>
>