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RTH Failsafe procedure and satellites numbers - Quick questions

Hi!

True! There has to be a certain nbr of sats before a safe take-off. But even if you "see" let's say 18sats on the screen you are not always on the safe side. Read about DOP Dilution of Precision and you will understand.

Best from Sweden
 
But even if you "see" let's say 18sats on the screen you are not always on the safe side.
If your drone is receiving signals from 18 satellites, you will be on the "safe side".
It's not possible to have 18 sats in view without having a good spread and it's having a good spread of sats that ensures a low HDOP
 
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