FTS Report on DOY 101

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

55652  091     -0.848    -0.488    -2.363     0.357    -1.520
55653  092     -0.844    -0.463    -2.342     0.379    -1.498
55654  093     -0.842    -0.440    -2.323     0.400    -1.481
55655  094     -0.837    -0.424    -2.308     0.411    -1.471
55656  095     -0.831    -0.411#   -2.292     0.417#   -1.461
55657  096     -0.824    -0.476    -2.273     0.345    -1.450
55658  097     -0.819    -0.458    -2.262     0.359    -1.443
55659  098     -0.817    -0.441    -2.246     0.374    -1.429
55660  099     -0.810    -0.421    -2.230     0.386    -1.423
55661  100     -0.800    -0.404    -2.213     0.394    -1.414
55662  101     -0.799*   -0.385*   -2.196*    0.409*   -1.398*
55663  102     -0.793*   -0.367*   -2.180*    0.421*   -1.387*
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 55652 to 55661
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    0.601  |    0.027    |   2.132   |
|   SPC40 RELATIVE TO UTC(NIST)   |    2.103  |    0.006    |   0.491   |
|   SPC60 RELATIVE TO UTC(NIST)   |    1.877  |    0.032    |   2.469   |
|   SPC40 RELATIVE TO SPC10       |    1.439  |    0.026    |   2.061   |
|   SPC60 RELATIVE TO SPC10       |    1.287  |    0.063    |   4.901   |
 -----------------------------------------------------------------------

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 095 (MJD 55656), SPC 40 Air Conditioning failed in FTS room (~33C degrees), causing both FTS receivers to fail and needed to be reset.

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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