How about in the area surrounding a major airport that has frequent low visibility?
It is not necessary to jam GPS 100% 24/7. Just enough to cause real concern about it's reliability would do huge damage. How many missiles would be fired by Predator drones if 5 or 10% went wonky and did big colateral damage? -John =============== > Enough for what? To bug the heck out of a citizen suddenly unable to find > his way to the movie theater? > > Weapon systems and aircraft navigation are unlikely to be affected by > such a simple device on the ground, even if deployed in large quantity. > Most of the stuff that really needs GPS has decent antennas that look up, > not down. > > Didier > > ------------------------ Sent from my BlackBerry Wireless thingy while I > do other things... > > -----Original Message----- > From: "J. Forster" <[email protected]> > Date: Sun, 15 Nov 2009 09:23:12 > To: Discussion of precise time and frequency > measurement<[email protected]> > Subject: Re: [time-nuts] The Demise of LORAN (was Re: Reference oscillator > accuracy) > > Thanks Chuck, > > My point EXACTLY. > > 1. It's well within the capability of dozens of countries or organizations > or even individuals. > > 2. They are trivial to distribute widely, and could be piggy-backed onto > other things. > > 3. Given enough of them with random on-off cycles, you'd force a giant > game of Whak-A-Mole. > > A guy in his basement could easily build 100 in a week given a design and > PCB layout. In another week he could scatter them all over a city, even if > travelling by bus. The whole operation would cost under a few thousand > dollars. > > Furthermore, it would not be needed to kill all the GPS in an area, all > the time. Making it unreliable would likely be enough. > > FWIW, > -John > > ================== > > > >> I guess the point you folks aren't getting is you can make a very >> effective local GPS jammer that runs off of a 9V transistor radio >> battery, >> and will last for several weeks. It can be done for a total cost of >> a few bucks per jammer.... search the web, the designs are out there. >> >> Toss the GPS jammers indiscriminately around the landscape, and you put >> GPS out of business for a very low cost. >> >> -Chuck Harris >> >> Mike Monett wrote: >>> >>> It should be easy to locate a jammer. Go to the area where the GPS >>> signal is being jammed. Drive in some direction until the signal is >>> regained. Repeat to find three locations where the signal is lost. >>> >>> Three points define a circle. The diameter tells the strength of the >>> jamming signal. The center defines the location. >>> >>> Once you are near the center, ordinary DF techniques should quickly >>> identify the source. >>> >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> >> > > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
