Jean-Francois Mezei <jfmezei_na...@vaxination.ca> wrote: > > Today, if someone were to jam the GPS signal in an areas in USA, you'd > likely hear about large number of car accidents in the news before > noticing your systems canMt get time from the GPS-NTP and went to a > backup ip address (nist etc).
The USA and the UK governments regularly perform GPS jamming tests, but they do so in remote areas. See http://www.navcen.uscg.gov/?pageName=gpsServiceInterruptions http://stakeholders.ofcom.org.uk/spectrum/gps-jamming-exercises/ (Dunno if other governments have similar exercises.) Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ - I xn--zr8h punycode Lundy, Fastnet, Irish Sea, South Shannon: Northerly or northeasterly 4 or 5, occasionally 6 except in south Shannon. Slight or moderate. Mainly fair. Good, occasionally poor at first in south Lundy.