In message <[EMAIL PROTECTED]>, N. Richard Solis
<[EMAIL PROTECTED]> writes
You can go out and get yourself a nice Cesium source (like the ones
in orbit) that will give you an accurate clock pulse with Stratum 1
quality. Cost: about 45K.
LINX has three of these, with a view to providing a good so
In a message written on Sun, Jun 01, 2003 at 11:57:21PM -0400, Sean Donelan wrote:
> Actually my question wasn't so much about other national standards labs,
> but that almost every major Internet backbone worldwide seems to trace
> their time source to GPS. Maybe not that surprising for US/North
Hello;
GPS maintains a set of its own clocks at Falcon AFB and does not really
track or steer to TAI - however, they are very close in practice
(except that the AF did not know
about Leap Seconds when they started out and synced it to UTC in the
early 1980's -
thus, there is a 19 second offset b
On Sun, Jun 01, 2003 at 08:13:08AM -0700, Peter Lothberg quacked:
>
> > I don't expect GPS to spin out of control soon..
>
> So GPS tracks TAI and the difference is published (2 months after the
> fact..)
>
> But it's simple to build a 'jamer' that makes GPS reception not work
> in a limited ar
> I don't expect GPS to spin out of control soon..
So GPS tracks TAI and the difference is published (2 months after the
fact..)
But it's simple to build a 'jamer' that makes GPS reception not work
in a limited area, same for Loran-C used in combination with GPS in
many Sonet/SDH S1 devices.
>
