portable gps cell phone signal jammer
In Austin, Todd humphreys complete more sophisticated equipment, its precise positioning, GPS jammer and development policies are allowed. In addition, he noted that the USRP (universal software radio peripherals) new radio transmitters are very popular with researchers and radio amateurs, and can broadcast signals on GPS frequencies, which can lead to very effective interference. The war of interference has just begun.
In most countries, their use is prohibited, but they can be used on the counters of various European and Asian websites. A small pocket jammer on a cigarette lighter can be charged only 30 euros. The more powerful model cost about 200 euros. Some Chinese websites even sell tripod military superjammers that may disrupt more than a kilometer of GPS. In another type, the hacker group that campaigns to protect the privacy of its citizens has released the instructions from the Internet to create their own cell phone jammer on the Internet.