Hell yess get out your tin foil hats,
US miltary and Backwater forces use these things on low power to shoot
the voice of allah into unsupsectign peoples heads in Sumer...


Soon we will see LG(looking glass) technology ontop of riot vans.





--- In brutalsfx@yahoogroups.com, "Ratskin Records" <mfdthree@...> wrote:
>
> Long range acoustic device
> From Wikipedia, the free encyclopedia
>
> The LRAD is the round black device on top of the New York City police
> Hummer.
>
> The long range acoustic device (LRAD) is a crowd-control and hailing
> device developed by American Technology Corporation.
>
> According to the manufacturer's specifications, the equipment weighs
> 45 pounds (20 kg) and can emit sound in a 30° beam (only at high
> frequency, 2.5 kHz) from a device 33 inches (83 cm) in diameter. At
> maximum volume, it can emit a warning tone that is 146 dBSPL (1,000
> W/m²) at 1 metre, a level that is capable of permanently damaging
> hearing, and higher than the normal human threshold of pain (120 – 140
> dB). The maximum usable design range extends to 300 metres. At 300
> metres, the warning tone (measured) is less than 90 dB. The warning
> tone is a high-pitched shrill tone similar to that of a smoke detector.
>
> There appears to be some disagreement over these specifications, as
> some have reported measurements that differ from the manufacturer's
> specifications, and show reduced output with a less directive beam.
>
> It's instructive to note that any loudspeaker of equal size will
> generate a beam of the same directivity as LRAD. The parameter "ka",
> which is the wave number multiplied by the speaker radius, is often
> used to characterize sound source directivity. For this source, ka=19
> at 2.5kHz, and according to the LRAD data sheet, the beam angle of
> about 30 degrees total - precisely what is predicted for a regular
> loudspeaker [1]. Contrary to some beliefs, the device does not use
> ultrasound, nor is it a phased array; it uses an array of conventional
> acoustic tweeters, the same as those used in many professional audio
> applications, all driven together in parallel.[citation needed]
>
> Carl Gruenler, (former) vice president of military and government
> operations for American Technology Corp. (and who now runs a company
> making a competing device), says that being within 100 yards (90 m) of
> the device is extremely painful, but its use should be limited to 300
> yards (270 m) to be effectively used. He concedes that the device is
> powerful enough to cause permanent auditory damage, but that it is
> only meant to be used for a few seconds at a time.
>
> Countermeasures may include the use of passive hearing protection
> (earplugs, headsets), which may bring the sound down to ineffective
> levels. In addition, sound could be reflected from a solid surface,
> and redirected back to the originator.
>
> Small spherical "point-source" acoustic devices follow the known
> inverse square law, which predicts the loss of 6db per doubling of
> distance from the source. Large speakers (or large arrays), such as
> these mentioned above or those commonly used in concert halls, etc.,
> produce less loss with distance in the nearfield, typically 3-4db per
> doubling of distance from the source. The larger the speaker, and the
> higher the frequency, the longer the effective nearfield is (see
> Beranek). Devices like this generally have nearfields of only a few
> meters.
>
> [edit] Usage
> The LRAD in use on a U.S. Navy patrol ship.
> LRAD on RMS Queen Mary 2
>
> The device was originally intended to be used by American warships to
> warn incoming vessels approaching without permission, and some reports
> claim that this is now a "non-lethal weapon". Its output up to 155db,
> focused at a distance, is sufficient to produce permanent ear damage
> and temporarily disrupt vision.[2] It may also be used simply as a
> very effective megaphone prior to any use as a weapon.
>
> These devices are currently used at Camp Bucca Iraq and are being
> tested in regions of Baghdad, Fallujah, along with other regions of
> Iraq. The LRAD device was also used by police in New York City during
> protests of the 2004 Republican National Convention[3] and in Georgia
> against opposition protesters in Tbilisi on November 2007 [4][5].
>
> The luxury cruise ship Seabourn Spirit employed an LRAD while
> repelling pirates who attacked the vessel with RPGs about 160 km off
> the coast of Somalia in early November 2005.[6] [7] The effectiveness
> of this device during the attack is not completely clear, but the
> pirates did not succeed in boarding the vessel and eventually fled.
>
> The Liberian vessel MV Biscaglia was attacked on November 28, 2008.
> The security detachment aboard Biscaglia used an LRAD device in an
> effort to repel attackers armed with assault rifles and
> rocket-propelled grenades. Following a one-sided shootout, the ship
> was seized and the unarmed security contractors forced to abandon ship
> or be killed.[8] The incident caused the usefulness of LRADs to be
> called into question by Lloyd's List.[9]
>
>
> --- In brutalsfx@yahoogroups.com, "Pengochi The Badoon"
> <beakfastars@> wrote:
> >
> > who are the terrorists.the police?
> >
> >
> > --- In brutalsfx@yahoogroups.com, frankenfag <no_reply@> wrote:
> > >
> > > The New York Police Department wants to be able to shut down cell
> > > phones, in case of a terrorist attack. In testimony today before the
> > > Senate Committee on Homeland Security and Governmental Affairs, New
> > > York Police Commissioner Ray Kelly said he wanted to take out that
> > > "formidable capacity to adjust tactics while attacks are underway."
> > > http://blog.wired.com/defense/2009/01/nypd-eyes-disru.html
> > >
> > > Digg if you feel so inclined
> > >
> >
>
http://digg.com/gadgets/NYPD_Wants_to_Jam_Cell_Phones_During_Terror_Attack
> > >
> >
>