ABC News 
Wednesday, March 9, 2011
North Korea appears to be protesting the joint U.S. and South Korean military maneuvers by jamming Global Positioning Devices in the south, which is a nuisance for cell phone and computers users — but is a hint of the looming menace for the military.
Since March 4, Pyongyang has been trying to disrupt GPS receivers critical to South Korean military communications apparently in protest of the ongoing joint military training exercises between South Korean and U.S. forces. Strong jamming signals were sent intermittently every five to 10 minutes.
The scope of the damage has been minimal, putting some mobile phones and certain military equipment that use GPS signals on the fritz.
Large metropolitan areas including parts of Seoul, Incheon and Paju have been affected by the jamming, but “the situation is getting wrapped up, no severe damage has been reported for the last two days,” Kyoungwoo Lee, deputy director of Korea Communications Commission, said.
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