Sept. 11, 2009 -- SAN DIEGO (East County Magazine and Liberty One Radio) -- “Long-range acoustic devices [LRADs] for crowd control can be extremely dangerous. These are used in Iraq to control insurgents. They can cause serious and lasting harm to humans…. We want to know WHY our Sheriff Dept has this weapon,” Sal Magallanez of San Diego-based Liberty One Radio said in an e-mail sent to East County Magazine. The device was stationed by San Diego County Sheriff deputies at a recent town hall forum hosted by Congresswoman Susan Davis (D-San Diego) in Spring Valley and at a subsequent town hall with Congressman Darrell Issa (R-San Diego). The Davis Rally drew an estimated 1,300-1,500 people, including vocal conservative and liberal protest groups.
A public records search conducted by East County Magazine has confirmed that the device is an LRAD 500-x manufactured by San Diego-based American Technology Corporation (ATC). Capable of use as an effective loudspeaker, the LRAD also has the ability to emit a deafening tone aimed at incapacitating and dispersing a crowd without use of lethal force.
LRADs were developed by ATC at the request of the U.S. Navy after the attack on the U.S.S. Cole as a means of dissuading hostile invaders. ATC founder Elwood "Woody" Norris is a pioneer in sound technology who has also been instrumental in development of ultra-sound and ground penetrating radar.
Cruise ship Captain Michael Groves successfully repelled pirates off the Somali coast using non-lethal weapons including an LRAD. Groves has since filed suit against Carnival Cruise Line, claiming he suffered permanent hearing loss as a result, the BBC has reported. Navy News describes the LRAD as "louder than a jet engine" and helpfully explains that it overwhelms its targets with "sound so loud they hear it inside their heads."
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