Homemade GPS jammers raise concerns

Chris · 01-20-2003

http://computerworld.com/securitytop...,77702,00.html

psyiode · 01-21-2003

Other than jamming the competition at the defcon wardriving contest, seems like one of these would be a nifty thing to have when renting a car that tracks your speed and charges you for speeding...

-Psyiode

hevnsnt · 01-21-2003

fyi you can read it here

nashr · 01-29-2003

I've wondered if the U.S. jams GPS near certain sensitive locations. I think there is some significant jamming near the Pentagon... radio signals crap out... no GPS lock... etc.

Anyone have definitive info on this?

fungus · 01-31-2003

GPS JAMMING TRACED TO TV ANTENNA PREAMPLIFIERS

It was a mariner's nightmare at times in Monterey Bay's Moss Landing
Harbor when unwanted interference effectively rendered global positioning
system receivers useless for hours at a time. Local engineers, sometimes
assisted by federal authorities, launch a furtive search for the source of
the jamming, ultimately locating three almost identical VHF/UHF television
amplifiers with built-in preamplifiers. (GPS World via CGC Communicator)

http://www.gpsworld.com/gpsworld/con...l.jsp?id=43404

sparafina · 01-31-2003

Quote:

Originally posted by nashr
I've wondered if the U.S. jams GPS near certain sensitive locations. I think there is some significant jamming near the Pentagon... radio signals crap out... no GPS lock... etc.

Anyone have definitive info on this?

I've never experienced this and I've driven past the Pentagon frequently. GPS is not necessary to find the Pentagon given the availability of commercially available georeferenced satellite photos and other data sources. They may be jamming other signals around that frequency.

sparafina · 01-31-2003

Quote:

Originally posted by fungus
GPS JAMMING TRACED TO TV ANTENNA PREAMPLIFIERS

http://www.gpsworld.com/gpsworld/con...l.jsp?id=43404

looks a lot like this one

01-20-2003	#1 (permalink)
Chris Bad as Can Join Date: Jul 2002 Posts: 1,141	Homemade GPS jammers raise concerns http://computerworld.com/securitytop...,77702,00.html __________________ perl -e 'print pack(c5, (41*2), sqrt(7056), (unpack(c,H)-2), oct(115), 10)'

01-21-2003	#3 (permalink)
hevnsnt Hardware Hacker Join Date: Dec 2002 Location: Overland Park, KS Posts: 44	fyi you can read it here __________________ http://www.I-hacked.com -=Taking Advantage of Technology=-

01-29-2003	#4 (permalink)
nashr Uber Geek Join Date: Aug 2002 Location: Virginia Posts: 1,624	GPS Jamming near Pentagon - Other sites? I've wondered if the U.S. jams GPS near certain sensitive locations. I think there is some significant jamming near the Pentagon... radio signals crap out... no GPS lock... etc. Anyone have definitive info on this? __________________ Help! I've been Simpsonized!

01-31-2003	#5 (permalink)
fungus Banned by the masses Join Date: Apr 2002 Location: So. Calif. Posts: 177	GPS being jammed by junk consumer electronics GPS JAMMING TRACED TO TV ANTENNA PREAMPLIFIERS It was a mariner's nightmare at times in Monterey Bay's Moss Landing Harbor when unwanted interference effectively rendered global positioning system receivers useless for hours at a time. Local engineers, sometimes assisted by federal authorities, launch a furtive search for the source of the jamming, ultimately locating three almost identical VHF/UHF television amplifiers with built-in preamplifiers. (GPS World via CGC Communicator) http://www.gpsworld.com/gpsworld/con...l.jsp?id=43404

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01-21-2003	#2 (permalink)
psyiode Registered Member Join Date: Dec 2002 Posts: 11	Other than jamming the competition at the defcon wardriving contest, seems like one of these would be a nifty thing to have when renting a car that tracks your speed and charges you for speeding... -Psyiode