[time-nuts] Faulty GPS SAT # 16 on Lady Heather

Bob Camp lists at rtty.us
Thu Jul 29 19:47:14 EDT 2010


Hi

The main need for Cs apparently is no longer an issue.

Bob



On Jul 29, 2010, at 5:41 PM, bg at lysator.liu.se wrote:

> It seems it is beeing moved.
> 
> 56   16  Launched 29 JAN 2003; usable 18 FEB 2003; operating on Rb std
>           Scheduled unusable 29 Jul 1345 UT to 30 Jul 0145 UT for
>             repositioning maintenance (NANU 2010102)
> 
> from   ftp://tycho.usno.navy.mil/pub/gps/gpstd.txt
> 
> btw the Elmer Perkins Rb's beats most/all space CS out to a few days.
> Since the ground crew updates clock preditions every day, there is not
> that much need for the Cs _long_ term stability.
> 
> --
> 
>   Björn
> 
>> Once again, one of the 8 received satellites (#16) delivers no
>> contribution to the time ensmble, although it got is over 40dbc
>> strength. Lady Heather (beta 3.00) shows a hollow circle in the diagram,
>> marked yellow in the list, and it has zero CLOCK BIAS and ACCU=0.
>> 
>> Does anybody know, if that satellite is defect (e.g. Cs down), or if it
>> has a special task, i.e. military purposes only?
>> 
>> Frank
>> 
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> 
> 
> 
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