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Need to plan...
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Your GPS survey with the most common almanac
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You may very well need to change the health settings when you use Yuma or SEM almanac data. While the orbital description data is generally usable for months, the satellite health may change at any time.
Download Almanac Information
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The current conditions of GPS Satellites
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For information on satellite health at times other than the almanac "Time Of Applicability", see the NANUs or status messages. An almanac entry of 000 indicates the satellite is healthy.
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