True or False: Individual satellites can be deselected from use by entering the satellite ID on the FMS GPS Control Page.

• A. True
• B. False
• C. Not possible
• D. Only if GPS Control Page is active

Answer: (A)

The ability to manually influence which satellites contribute to the GPS solution is what this is about. On the FMS GPS Control Page, you can see each satellite by its ID (PRN) and choose to exclude individual satellites from use. When you deselect a satellite, its measurements are ignored by the solver, which can help maintain accuracy and integrity if that satellite is unhealthy or providing questionable data.

This is useful because the navigation solution relies on enough healthy satellites; if one is problematic, removing it can improve the overall solution. You’d re-enable a satellite once the issue is resolved to restore full satellite usage.