FTS Report on DOY 182

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

55733  172      1.189     0.175    -1.725    -1.016    -2.912
55734  173      1.179     0.173    -1.725    -1.008    -2.903
55735  174      1.169     0.172    -1.728    -0.999    -2.896
55736  175      1.158     0.169    -1.731    -0.991    -2.888
55737  176      1.148     0.164    -1.733    -0.986    -2.880
55738  177      1.139     0.162    -1.735    -0.979    -2.873
55739  178      1.130     0.158    -1.738    -0.974    -2.868
55740  179      1.124     0.155    -1.740    -0.971    -2.864
55741  180      1.112     0.147    -1.747    -0.967    -2.860
55742  181      1.103    -0.040$   -1.748    -1.144$   -2.848
55743  182      1.093*    0.069*   -1.750*   -1.026*   -2.842*
55744  183      1.084*    0.055*   -1.753*   -1.030*   -2.835*
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 55733 to 55742
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |   -1.094  |    0.017    |   1.317   |
|   SPC40 RELATIVE TO UTC(NIST)   |   -1.573  |    0.650    |  50.533   |
|   SPC60 RELATIVE TO UTC(NIST)   |   -0.315  |    0.018    |   1.422   |
|   SPC40 RELATIVE TO SPC10       |   -0.467  |    0.648    |  50.423   |
|   SPC60 RELATIVE TO SPC10       |    0.780  |    0.029    |   2.275   |
 -----------------------------------------------------------------------

III.
Comments: 
$ Scheduled power outage at SPC 40 on DOY 181 (MJD 55742) caused both master clocks to lose time. They needed to be synched to GPS time. The offset was less than 50 nanoseconds. 
On DOY 357 (MJD 55553), SPC 40 HM2 (the new Symmetricom Maser) was put online. 
On DOY 060 (MJD 55621), SPC 60 HM2 (Symmetricom) was put online. 
On DOY 152 (MJD 55713), SPC 10 HM2 (Symmetricom) was put online.

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