HERFs, or high energy radio frequency weapons (particularly microwaves), will become the weapon of choice for many global guerrilla operations (see Homemade Microwave Weapons for more). There are signs that these weapons are just starting to make it into the mainstream. David Giri, of ProTech, is currently building HERFs for the Marine Corps and the LA Police department. Here is more on the device, which has trialed at up to 50 meters away:
The bulk of the device is designed to fit in a car boot and consists of a battery and a bank of capacitors that can store an electrical charge. Flicking a switch on the dashboard sends a burst of electricity into an antenna mounted on the roof of the car. The antenna then produces a narrow beam of intense radio waves that is directed at the vehicle ahead. When the radio waves hit the targeted car, they induce surges of electricity in its electronics, upsetting the fuel injection and engine firing signals. "It works on most cars built in the past 10 years, because their engines are controlled by computer chips," said Dr Giri. "If we can disrupt the computer, we can stop the car." A prototype is due to be ready by next summer
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