[time-nuts] 15 Seconds error...??

[Hal Murray]

mikes at flatsurface.com said:
> You tell me, is that UTC, or UTC(USNO) or UTC(NIST), or something
> completely different? 

My two cents:

They are very close.  It's probably off scale for anybody but a geek to 
measure the difference.

Legally, if it matters, you should specify.

I can get UTC(USNO) to sub microsecond level from GPS, but I have GPSDOs.  
Most low cost GPS units are USB without PPS.  Good USB units get close to the 
ms range, but they are a tiny fraction of the market.  Even with a PPS, you 
have to make sure it is getting a good signal.

What sort of accuracy can I get from WWVB or WWV?  I'd guess several or 10s 
of ms.  I'm in California.  I'd expect better if I was closer, probably sub 
ms.



-- 
These are my opinions, not necessarily my employer's.  I hate spam.