4 antennas cell phone jammer1

This 3 g 4 g Wimax bluetooth GPS signal jammer design and has good function of a given distance of the function of the signal strength in the region, to cut off the GPS signal 4 g wireless 3 g, 2 g Wimax at the same time the ability to block up to 20 meters. In addition to the use of external antenna to conform to the conditions of http://www.jammer-buy.com/jammer-blocker-devices/c-1.html

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• #signal_jammer