PDS_VERSION_ID               = PDS3
RECORD_TYPE                  = STREAM
STANDARD_DATA_PRODUCT_ID     = HEA
DATA_SET_ID                  =  "MEX-M-MRS-1/2/3-EXT2-1549-V1.0"
PRODUCT_ID                   = "M00SUE0L1A_HEA_082401854_00.TXT"
PRODUCT_CREATION_TIME        =  2011-07-21T18:03:48.000
PRODUCER_ID                  = "SUE"
INSTRUMENT_HOST_ID           = "MEX"
OBJECT                       = TEXT
PUBLICATION_DATE               = 2008-08-28
NOTE                           = "DSN MEX Occultation Data"
END_OBJECT                   = TEXT
END


Miscellaneous
=============

     This is the first report since HEA8233A.TXT.

     No additional MEX open loop data are expected through at least
7 September 2008.


Open Loop Data
==============

  Data Collection
  ---------------

     We have completed quick-look processing on the following MEX RSR open
loop radio occultation data at Stanford:

DOY DSS        RSR        BAND RSR CH KSPS BT  REC   RECS      RSR      MAX
          START    STOP         ID         RS  LEN          FILE NAME   SNR
--- --- -------- -------- ---- --- -- ---- -- ----- ----- ------------ -----
240  63 18:54:00 19:14:00 X/XR   4  1    2 16  8260  1201 8240185A.RSR  53.6
240  63 18:54:00 19:14:00 X/SR   3  1    2 16  8260  1201 8240185B.RSR  40.6
241  65 15:26:00 15:45:59 X/XR   4  1    2 16  8260  1200 8241152A.RSR  49.1
241  65 15:26:00 15:45:59 X/SR   3  1    2 16  8260  1200 8241152B.RSR  31.9

     These observations appear to have been conducted with spacecraft
telemetry modulation ON.  The DSS 63 carrier signal-to-noise is 5 dB lower
than on day 231 when DSS 14 (also 70-m) was used.

     There are variations of up to +/-0.5 dB in the X-Band carrier level prior
to ingress on day 240.  These are mimicked (at about +/-0.15 dB) in the S-Band
carrier level.  The carrier levels on day 241 are very stable by comparison.
The S-to-X correlation (with DSS 63 only) suggests that ground antenna
pointing may have been the cause.

     The X-Band power spectra from day 240 show weak spurs at about +/-180 and
+/-500 Hz on either side of the carrier.  These harmonics are commonly seen at
low levels when observing signals at or above 50 dB/Hz.  Very weak +/-180 Hz
harmonics are seen in the data from day 241.