FTS Report on DOY 096

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

55647  086     -0.868    -0.599    -2.450     0.267    -1.583
55648  087     -0.864    -0.577    -2.431     0.286    -1.568
55649  088     -0.860    -0.554    -2.415     0.304    -1.556
55650  089     -0.856    -0.531    -2.395     0.323    -1.541
55651  090     -0.851    -0.509    -2.377     0.341    -1.526
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     -0.828*   -0.381*   -2.272*    0.445*   -1.444*
55658  097     -0.825*   -0.360*   -2.254*    0.462*   -1.430*
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 55647 to 55656
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    0.455  |    0.009    |   0.707   |
|   SPC40 RELATIVE TO UTC(NIST)   |    2.491  |    0.051    |   3.969   |
|   SPC60 RELATIVE TO UTC(NIST)   |    2.052  |    0.018    |   1.377   |
|   SPC40 RELATIVE TO SPC10       |    2.028  |    0.058    |   4.506   |
|   SPC60 RELATIVE TO SPC10       |    1.604  |    0.036    |   2.798   |
 -----------------------------------------------------------------------

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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