[time-nuts] Traceability after loss of LORAN and WWVB

[J. Forster]

Yes, but the new BPSK modulation defeats the ability of most carrier
tracking receivers to lock up on the carrier.

It requires something like a Costas Loop receiver, designed to handle
BPSK, to extract the unmodulate carrier.

-John

==========




> So, legal traceability requires many steps described in obscure
> documents
> where one missing step invalidates all of the others.
>
> Sounds like a religious discussion.
>
> What was I doing when I compared 60 KHz derived from a 10 MHz output
> from a Caesium standard with WWVB and recorded the rate of phase change?
> And why has the new modulation scheme changed that? NIST says the WWVB
> carrier is still traceable to the national frequency standard at
> Boulder.
>
> Bill Hawkins
>
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