NTP question

Eric S. Raymond esr at thyrsus.com
Tue May 7 02:06:07 UTC 2019

Alejandro Acosta <alejandroacostaalamo at gmail.com>:
> "The built in high sensitivity GPS receiver is able to lock multiple
> satellites from within multiple buildings or from a window location*,
> eliminating the requirement that an outdoor antenna be installed*."

Even relatively low-end GPS hardware can do this now.


That's my recipe for a GPS-based Stratum 1 server built from a RasPi and
any one of several generally-available GPS daughterboards.  Cost less than

A window location works just fine.  I have six of these on the
windowsill above my desk - they're my test fleet for NTPsec. The trees
near the outside of that window aren't a problem, and while it isn't
*guaraneed* that you have a 4-satellite lock at any ven time periods
of no tracking tend to be short.
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>

More information about the NANOG mailing list