FTS Report on DOY 119

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

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      0.032    -0.140    -1.990    -0.174    -2.022
55679  118      0.041    -0.127    -1.978    -0.170    -2.019
55680  119      0.048*   -0.110*   -1.964*   -0.160*   -2.012*
55681  120      0.058*   -0.096*   -1.952*   -0.156*   -2.010*
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 55670 to 55679
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    1.168  |    0.043    |   3.366   |
|   SPC40 RELATIVE TO UTC(NIST)   |    1.621  |    0.027    |   2.133   |
|   SPC60 RELATIVE TO UTC(NIST)   |    1.398  |    0.023    |   1.813   |
|   SPC40 RELATIVE TO SPC10       |    0.460  |    0.068    |   5.323   |
|   SPC60 RELATIVE TO SPC10       |    0.238  |    0.067    |   5.189   |
 -----------------------------------------------------------------------

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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