CoCom Limits für GPS-Empfänger

In GPS technology, the phrasing "COCOM Limits" is also used to refer to a limit placed to GPS tracking devices that should disable tracking when the device realizes itself to be moving faster than 1,000 knots (1,900 km/h; 1,200 mph) at an altitude higher than 60,000 feet (18,000 m).[2] This was intended to avoid the use of GPS in intercontinental ballistic missile-like applications.
Some manufacturers apply this limit literally (disable when both limits are reached), other manufacturers disable tracking when a single limit is reached.
This limit is a frequent obstacle encountered, if not discussed, among hobbyists seeking to make high altitude balloons.

Quelle:Wikipedia