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Published on Sep 21, 2009
A GJ5 - http://jammer-store.com/gj5-gps-l1-l2... - is a fantastic 4 bands RF signal jammer for block GPS L1 L2 and L5 system and Wi-Fi Bluetooth devices. It's a ultra portable four band blocker device. GJ5 is the first jammer to block all civil GPS bands of L1 L2 and L5.