When you say “isn’t allowed”, is there something that enforce that?
Kevin Robatel

To operate above 60,000ft requires a State Department export license in the US. Vendors can disable the operation of the receiver at these heights to get exemption.

This is so that exported GPS products can’t be used to threaten US security.

Basically, when GPS tracking devices realize that they’re moving faster than 1,200 mph and are over 60,000ft, they disable themselves. This is built in by manufacturers

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