In message <[EMAIL PROTECTED]>, "Bill Hawkins" writes:

>Since control is not precise, the subject is probably off
>topic for this list.

It all depends on your integration time.

I was told from Stockholm that they hadn't lost track of a single
cycle in 50 some years, so that's:

        20msec / 50 y = 12.675e-12

As far as I know, no other frequency reference can do that.

Obviously the numbers are highly suspect, because he didn't
know what they measured against...

-- 
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