[time-nuts] Phase modulation detection/NIST plan

David I. Emery die at dieconsulting.com
Sat Jul 14 05:00:14 UTC 2012


On Fri, Jul 13, 2012 at 09:47:12PM -0700, Brooke Clarke wrote:
> Hi:
> 
> The key thing GPS is lacking is Daylight Savings Time.
> 
> WWV & WWVB have the DST bits that allow a clock to show the local time.

	And that is important for most routine civil human use.

	Nor something that could somehow be added to GPS which is
worldwide in scope without adding lots of message information and
dealing with all the crazyness of international time zones and
political jurisdictions.   WWVB serves the US (and maybe Canada) 
where DST start and end is pretty much global.

	Besides the costs greatly favor WWVB receivers... as the
authors of the paper point out their whole decoder would fit neatly
in a tiny corner of the silicon of a typical SOC chip these days...
and AFAIK there is no practical current way to do this with GPS.

	And while it is true that good Faraday cages like metal
enclosures with tight seals kill the LF, a good sized bush might take
out GPS and won't impact LF reception, which also works pretty well
inside many buildings and in particular common wood frame houses unlike
GPS.



> 
> Have Fun,
> 
> Brooke Clarke
> http://www.PRC68.com
> http://www.end2partygovernment.com/2012Issues.html
> 
> 
> 
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-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."




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