FTS Report on DOY 215

I.  The following are clock offsets, in microseconds between the clocks
at each DSN complex and each complex relative to UTC(USNO).  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      USNO      USNO      USNO      SPC10     SPC10

57227  205      0.452    -0.979    -1.372    -1.431    -1.823
57228  206      0.444    -1.004    -1.400    -1.448    -1.845
57229  207      0.436    -1.028    -1.430    -1.464    -1.864
57230  208      0.429$   -1.033#   -1.453    -1.462$#  -1.879$
57231  209      0.431    -1.012    -1.481    -1.443    -1.909
57232  210      0.439    -0.988    -1.508    -1.426    -1.943
57233  211      0.444    -0.966    -1.529!   -1.410    -1.971!
57234  212      0.448    -0.940    -1.511    -1.388    -1.956
57235  213      0.450    -0.917    -1.485    -1.366    -1.931
57236  214      0.452    -0.895    -1.462    -1.346    -1.912
57237  215      0.458*   -0.871*   -1.437*   -1.328*   -1.888*
57238  216      0.462*   -0.848*   -1.413*   -1.309*   -1.866*
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 57227 to 57236
 -----------------------------------------------------------------------
|                                 | DELTA-F/F | UNCERTAINTY | STD. DEV. |
|           MEASUREMENT           |  (E-13)   | (+/- E-13)  |  (nsec.)  |
|---------------------------------|-----------|-------------|-----------|
|   SPC10 RELATIVE TO UTC(USNO)   |    0.467$ |    0.051    |   2.214   |
|   SPC40 RELATIVE TO UTC(USNO)   |    2.708# |    0.028    |   1.224   |
|   SPC60 RELATIVE TO UTC(USNO)   |    2.807! |    0.015    |   0.664   |
|   SPC40 RELATIVE TO SPC10       |    2.265$ |    0.055    |   2.388   |
|   SPC60 RELATIVE TO SPC10       |    2.581! |    0.041    |   1.790   |
 -----------------------------------------------------------------------

III.
Comments: $ SPC 10 Maser 1 (HM-300) frequency was adjusted by 1.6*-13 on DOY 208 (MJD 57230) at about 1700 UTC; then the maser was swapped to be online. 
SPC 10 frequency offsets were calculated from DOY 209.
# SPC 40 online maser, HM2 (HM-301), frequency was adjusted by 5.5*E-13 on DOY 208 (MJD 57230) at 0300 UTC. 
SPC 40 frequency offsets were calculated from DOY 208.
! SPC 60 online Maser (HMA-1) was adjusted by 6*E-13 on DOY 211 (MJD 57233) at about 1312 UTC.
SPC 60 frequency offsets were calculated from DOY 212.

NOTES: All DSN data are from the new multichannel receivers.
SPC 10 and SPC 60 offsets are commonviewed with USNO and with each other.
SPC 40 offsets are all-in-viewed with USNO and with SPC 10. 

FTS Contacts: Connie Dang (626)305-6194 :: Linh La (626)305-6184



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