From linda@lynx.grdl.noaa.gov Fri Jul  2 07:38:37 EDT 1999
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From: linda@lynx.grdl.noaa.gov
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Subject: AMC2 receiver
To: jimr@maia.usno.navy.mil, bill@tycho.usnogps.navy.mil
Date: Fri, 02 Jul 1999 7:38:15 EDT
Cc: linda@gracie.grdl.noaa.gov (Linda Nussear)
X-Mailer: Elm [revision: 212.4]
Status: RO



Hi Jim,

   The receiver located at AMC2 in Colorado, belonging to USNO (Jim Ray)
   stopped tracking, for no apparent reason, on day 182 at 00:13:00 UTC.
   This is receiver #245-U, it is an AOA SNR-12 ACT with software version
   3.3.32.2.  It automatically started tracking on day 183 at 00:00:00 UTC
   and seems to be fine for now.  Following  is the QC Summary and the 
   RINEX output from AMC2.






From bill@tycho.usnogps.navy.mil Fri Jul  2 09:11:30 EDT 1999
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	Fri, 2 Jul 1999 13:11:19 GMT
From: Bill Bollwerk 
Message-Id: <199907021311.NAA16457@tycho.usnogps.navy.mil>
Subject: Re: AMC2 receiver
To: linda@lynx.grdl.noaa.gov
Date: Fri, 02 Jul 1999 13:11:18 UTC
Cc: jimr@maia.usno.navy.mil (Jim Ray), linda@gracie.grdl.noaa.gov
In-Reply-To: <199907021138.HAA22550@lynx.grdl.noaa.gov>; from "linda@lynx.grdl.noaa.gov" at Jul 02, 99 7:38 am
X-Mailer: Elm [revision: 212.4]
Status: RO

Linda,


Looking at the 1 pps data for AMC2, the receiver's 1 pps output changed on MJD 
51354 (a week ago - today is MJD 51361) and remained at 0.0755 sec for 3 days. 
On MJD 51357 the 1 pps changed momentarily to .88 sec and then returned close 
to it's original values (the values prior to MJD 51354).

The above occurred prior to the stop and restart of the tracking noted below.  
The tracking stoppage appears to be unrelated to these 1 pps changes and seems 
to correlate with the change you made in when the flashcard is accessed for 
data (as I recall you changed from 0010 to 0015).  Previously the tracking 
stoppage would occur at 0008 and this one occurred at 0013 (5 minutes later 
than previous experiences).

This is just for your info.

Bill