[aprssig] Com port SHARING vs Com Port JOINING

Robert Bruninga bruninga at usna.edu
Tue Jan 15 10:37:06 EST 2008

> Also, most folks don't realize that "GPS Time" 
> is NOT Earth time!  The GPS constellation does 
> not follow leap seconds.  This has happened 
> something like 13 times, so GPS time is off by
> About that much from official "Earth Time".  

True about internal GPS time, but I thought they included those
offsets into the Display and serial output when they output time
so that it is displayed and produced externally to be UTC time?


Merely using a GPS
> To update your computer's CMOS clock will not make your
> Time "correct".  A GPS is generally a fantastic tool for a
> "reference", like a 1ppm time base standard, but it's not an
> clock.  You probably will be much better off simply using a
> utility to update the computer time from the Internet, such as
> "SocketWatch 32" (www.locutuscodeware.com).
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