Don't really see why the clocks should be off far enough to notice. 
More likely to be the random jitter on the position fixes which died out a 
couple of years ago. Also airliners are using it now, so it is unlikely to be 
seriously degraded. But do the Afghans use it? Would expect it to be 
operating at max. efficiency all the time. Won't it be needed for any air 
strikes? If it was turned on and off, wouldn't that give a warning to the 
other side? But 100 m at the speed of light is about 1/3 micro second --- 
don't think my seis equipment would know the difference. 

       Regards,

       Chris Chapman
       Don't really see why the clocks should be off fa
r enough to notice. More likely to be the random jitter on the position fixes which died out a couple of years ago. Also airlin
ers are using it now, so it is unlikely to be seriously degraded. But do the Afghans use it? Would expect it to be operating at
 max. efficiency all the time. Won't it be needed for any air strikes? If it was turned on and off, wouldn't that give a warnin
g to the other side? But 100 m at the speed of light is about 1/3 micro second --- don't think my seis equipment would know the
 difference. 



       Regards,



       Chris Chapman