GPS jamming and other stuff

[Cholmeleian]

This CAA leaflet may be of interest. GPS jamming takes place quite often and the NOTAMs (Notices TO AirMen) tell you where and when.

http://www.caa.co.uk/docs/33/SRG_GAD_SSL25.PDF

[Darren]

Indeed this is true although jamming is very rare and only occurs over very small areas which are normally military ranges.

Navstar's Notice Advisory to Navstar User's (NANU) gives similar alerts including maintenance work on active satellites etc.

In practice the system has a very good uptime and I have only rarely experienced any interference. Of course PPL's should never rely on GPS as their primary navigation instrument ;)
_________________
Darren Griffin

[Cholmeleian]

The airbourne area affected can be very large (one NOTAM mentioned 189 miles) but far less on the ground of course.

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