[time-nuts] WWVB new modulation scheme monograph

[J. Forster]

It depends on what you mean:

First off, the phase modulation renders many existing phase tracking
receivers useless. Period.

A few current receivers are immune to the PSK, but they do not 'use' the
PSK modulation, but they just ignore it.

My understanding is, the new modulation was designed using an SBIR grant,
and a proprietary chip designed and tested with taxpayer money. AFAIK
there is no other source, so the company that did the SBIR now has a
monopoly.

-John

===============


> Are there any commercial products using this new phase-shift modulation
> scheme?
>
> Larry
>
>
> On 11/3/2012 4:32 PM, Charles P. Steinmetz wrote:
>> This has probably already been posted more than once, but if anyone is
>> still looking for a description of the new WWVB modulation scheme:
>>
>> http://tf.boulder.nist.gov/general/pdf/2651.pdf  (Sept. 2012)
> ...
> --
> Best wishes,
>
> Larry McDavid W6FUB
> Anaheim, California  (SE of Los Angeles, near Disneyland)
>
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