FTS Report on DOY 117

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

55668  107     -0.062    -0.283    -2.113    -0.223    -2.052
55669  108     -0.055    -0.270    -2.099    -0.217    -2.044
55670  109     -0.048    -0.253    -2.087    -0.207    -2.040
55671  110     -0.041    -0.236    -2.075    -0.198    -2.036
55672  111     -0.034    -0.222    -2.059    -0.190    -2.025
55673  112     -0.025    -0.207    -2.047    -0.184    -2.022
55674  113     -0.016    -0.193    -2.036    -0.179    -2.020
55675  114     -0.006    -0.178    -2.022    -0.174    -2.016
55676  115      0.004    -0.163    -2.011    -0.169    -2.017
55677  116      0.017$   -0.151    -2.000    -0.170$   -2.017$
55678  117      0.021*   -0.134*   -1.985*   -0.157*   -2.006*
55679  118      0.029*   -0.119*   -1.973*   -0.150*   -2.002*
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 55668 to 55677
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    0.991  |    0.033    |   2.557   |
|   SPC40 RELATIVE TO UTC(NIST)   |    1.718  |    0.018    |   1.391   |
|   SPC60 RELATIVE TO UTC(NIST)   |    1.462  |    0.016    |   1.250   |
|   SPC40 RELATIVE TO SPC10       |    0.730  |    0.048    |   3.712   |
|   SPC60 RELATIVE TO SPC10       |    0.470  |    0.052    |   4.053   |
 -----------------------------------------------------------------------

III.
Comments: 
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 116 (MJD 55677) at SPC10, the new Symmetricom maser was installed in conjunction with a station global power downtime. Neither the station time offset nor the frequency of the online maser was affected.

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



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