FTS Report on DOY 198

I.  The following are clock offsets, in microseconds between the clocks
at each DSN complex and each complex relative to UTC(NIST).  The offset
is a mean of readings using several GPS space vehicles in common view.

                SPC10     SPC40     SPC60     SPC40     SPC60
                MINUS     MINUS     MINUS     MINUS     MINUS
 MJD   DOY      NIST      NIST      NIST      SPC10     SPC10

56114  188     -0.398    -0.188    -0.328$    0.210     0.049$
56115  189     -0.410    -0.186     0.013     0.222     0.423
56116  190     -0.424    -0.189     0.033     0.233     0.458
56117  191     -0.356#   -0.189     0.052     0.146#    0.448#
56118  192     -0.072    -0.186     0.073    -0.110     0.160
56119  193     -0.082    -0.189     0.095    -0.109     0.177
56120  194     -0.095    -0.192     0.112    -0.099     0.207
56121  195     -0.109    -0.192     0.132    -0.085     0.240
56122  196     -0.122    -0.199     0.151    -0.078     0.273
56123  197     -0.138    -0.197     0.169    -0.060     0.307
56124  198      0.003*   -0.197*    0.255*   -0.202*    0.257*
56125  199      0.043*   -0.198*    0.292*   -0.243*    0.254*
Values derived from linear least squares extrapolation or interpolation are indicated by (*) next to the time offset. 

II.  Frequency Offsets from linear least-squares fits on time-offsets over the period from 56114 to 56123
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    4.700  |    1.190    |  92.537   |
|   SPC40 RELATIVE TO UTC(NIST)   |   -0.134  |    0.030    |   2.303   |
|   SPC60 RELATIVE TO UTC(NIST)   |    4.301  |    1.117    |  86.823   |
|   SPC40 RELATIVE TO SPC10       |   -4.807  |    1.134    |  88.200   |
|   SPC60 RELATIVE TO SPC10       |   -0.367  |    1.741    | 135.396   |
 -----------------------------------------------------------------------

III.
Comments: 
$ On DOY 188 (MJD 56114), SPC 60 replaced worn fuses of the 100 MHz Distribution Assembly, and re-synced the time with the GPS.
# On DOY 191 (MJD 56117), SPC 10 replaced worn fuses of the 100 MHz Distribution Assembly, and re-synced the time with the GPS.

NOTES: All DSN data are from the new multichannel receivers.
SPC 10 and SPC 60 offsets are commonviewed with NIST and with each other.
SPC 40 offsets are all-in-viewed with NIST and with SPC 10. 

FTS Contacts: Connie Dang (626)305-6194 :: Linh La (626)305-6184



                                  Page 1