Hi Paul:
The problem with GPS is you don't get the DST bits.
For the OP that's OK, but if you want local time it isn't.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
paul swed wrote:
Boy do I need to agree with Chris's comments above. If this is anything
serious GPS really is the answer in all respects. Yes there is the risk of
something happening. But amazingly a lot of the GPS receivers hold onto
time pretty well even without GPS.
The whole WWVB thing makes sense as a frequency transfer method. But is not
at all close to GPS today. Its far more interesting to watch the VLF
propagation behaviors and as a sort of backup frequency reference. LORAN C
simply kicked butt with what it delivered and was on par with and frankly
better then GPS for frequency. At least for me over 20 years of practice.
But one day soon eLORAN may just come back its looking positive.
Sorry not to change the subject.
Regards
Paul.
On Fri, Feb 21, 2014 at 11:46 AM, Chris Albertson <albertson.ch...@gmail.com
wrote:
Bob,
If you are looking for an accurate, easy to use timing signal then GPS
is the one you want. WWV and WWVB are what I call "legacy" signals
and while they might be accurate when broadcast there is propagation
delay and unknown atmospheric and ionospheric conditions.
But the question is "How accurate do you need?" If a few tens of
milliseconds is good enough then running NTP over the internet will
work and if you already have an internet connection it's free. If you
need a few nanoseconds then GPS is what you want.
Using your beat with WWV as a benchmark. You were getting about one
part in a million accuracy. It is VERY easy to do 10,000 times better
than that with GPS.
On Thu, Feb 20, 2014 at 8:19 PM, Bob Albert <bob91...@yahoo.com> wrote:
I would love to discipline my counter and signal generator time bases to
match NIST. Is this possible, and what would I need to do?
I am sure this subject has been covered but I don't know how to find it.
--
Chris Albertson
Redondo Beach, California
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