I realize this modulation scheme change is perceived as a sensitive
subject. But, really, since the full scheme is fully disclosed no
company has a monopoly on its use. My question is, will this new scheme
offer enough advantages to merit the production of commercial equipment
to use it, and ultimately whether low-cost equipment will be
sufficiently advantageous to merit its design and production in volume
like the typical WWVB digital clocks prevalent today.
Does the company that worked with NIST on the development have a product
now that uses the new scheme?
Larry
On 11/22/2012 11:42 AM, J. Forster wrote:
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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Best wishes,
Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)
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