PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM
OBJECT                = TEXT
 PUBLICATION_DATE     = 2007-07-29
 NOTE                 = " E-mail and other messages
                          concerning MGS Radio Science on
                          or about 1999/306."
END_OBJECT            = TEXT
END


From trish@rodan.jpl.nasa.gov Fri Nov  5 19:49 PST 1999
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Date: 05 Nov 99 19:48:46 -0800
From: Trish Priest <trish@rodan.jpl.nasa.gov>
Subject: DOY 302-308 Doppler Data Notes
To: Alexander Konopliv <Alexander.S.Konopliv@jpl.nasa.gov>,
        Frank Lemoine <flemoine@ares.gsfc.nasa.gov>,
        Richard Simpson <rsimpson@magellan.stanford.edu>,
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Hello,
Below are some notes from the DSN Daily reports regarding possible problems with Doppler data.

DOY 303 - DSS 34 and 45 had very heavy rain.

DOY 304 - DSS 34 -  About 07:02:00 UTC ERT the Doppler residuals were very large due to a bad uplink tune.  The spacecraft dropped 2-way and went 1-way for the remainder of the orbit.

DOY 306 - DSS 25 had problems locking the receivers after going two-way on three orbits.  Also, the low noise amplifier (maser) had to be replaced about 00:54:00 UTC.

-Trish