[time-nuts] TruePosition GPSDO Holdover Issues

Hal Murray hmurray at megapathdsl.net
Tue May 15 15:52:58 EDT 2018

kb8tq at n1k.org said:
> One thing to consider - if you get far enough north, the “hole” closes and
> you can get sat tracks from the other side of the north pole. Yes they are a
> *long* ways away. It’s no worse than a lot of tracks that GPS thinks are
> perfectly fine to use. For timing they aren’t going to do much good. They
> will improve a navigation

Neat.  Thanks.  That raises several questions.
  How high do satellites get if you are at a pole?
  What is the best or worst latitude for timing?
  What is the best/worst latitude for doing a survey?

These are my opinions.  I hate spam.

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