FTS Report on DOY 103

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

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     -0.791    -0.387    -2.198     0.402    -1.406
55663  102     -0.782    -0.369    -2.186     0.411    -1.404
55664  103     -0.780*   -0.351*   -2.168*    0.425*   -1.389*
55665  104     -0.773*   -0.333*   -2.153*    0.436*   -1.380*
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 55654 to 55663
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(NIST)   |    0.745  |    0.036    |   2.823   |
|   SPC40 RELATIVE TO UTC(NIST)   |    2.065  |    0.009    |   0.667   |
|   SPC60 RELATIVE TO UTC(NIST)   |    1.783  |    0.019    |   1.462   |
|   SPC40 RELATIVE TO SPC10       |    1.258  |    0.039    |   3.043   |
|   SPC60 RELATIVE TO SPC10       |    1.040  |    0.037    |   2.890   |
 -----------------------------------------------------------------------

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



                                  Page 1