Complex sonic shock waves are internally adjustable for maximizing on target subject. A new weapon invented by Chinese scientists uses low frequency sound waves to cause physical. Great for Airports, Fish and Wildlife agencies, and police agencies. Mentioned herein is a list of non-lethal anti-piracy weapons that are used or can be used to fight piracy at high seas. This cookie is set by GDPR Cookie Consent plugin. See details Equivalent to having a shotgun blasted directly beside your ear, sounds of that volume are capable of . Sound output level is about 115db at 20". The SRG (Strategic Response Group) of the NYPD using the LRAD to give announcements. Defenshield, Inc. The PSP60 does not have a second "boost switch" trigger like the PPP10 -- it has a test tone, and a maximum output trigger, where the sound output is greater than the PPP10 with the boost trigger. It can also cause headaches, intense irritation, sweating, imbalance, and nausea. Original British Victorian Era Cannon Wagon Wooden Wheel- 36 Inch Diameter. What surface are you using the unit on gravel, dirt road, finished concrete, wood floor? If the nerve endings are still functional then..Death shortly follows but looking down to watch your body turning to liquid..that's nightmare fuel. Product details. According to representatives from Genasys, an LRAD device broadcasts sound in a. speakers (or large arrays), such as these, have an interference You also have the option to opt-out of these cookies. (For maximum blast mitigation, units must be secured or lagged.). Finally Sells Japan Tomahawk Missiles, Your Privacy Choices: Opt Out of Sale/Targeted Ads. so let's use that as our upper bound for power requirements for this weapon since we want to liquify the person, not instantly pulverize them. Sonic and ultrasonic weapons ( USW) are weapons of various types that use sound to injure or incapacitate an opponent. 7324 Woodbury Pike Since an ultrasonic transducer by definition emits sound at greater than 20Khz, we will need a second transducer to use interference to generate the target frequency. How does a fan in a turbofan engine suck air in? There are a few competing theories about the exact mechanisms that give the LRAD its power, due in part to the scarcity of technical information about the devices online. But so-called sound cannons can do serious harm when police departments misuse themand they may misuse them a lot. This unique item is a directional ultrasonic heterodyning type listening device. Sweep and Frequency Controls adjust for maximum effect on target Dimensions: 9"L x 3.5"W x 10"H Color may vary Dark-Gray or Light-Grey Ultrasound Protective Deterrents Are Non-Lethal and Highly Effective at Preventing Unwanted Encounters This handheld ultrasonic gun has many uses. Each unit can cover one average size room. Defenshield, Inc. predicted for a regular loudspeaker.]. These can range from debilitating and incapacitating, to enervating fear and threatening, to sickening nausea and nerve racking paranoiaall without physical contact! The LRAD ranges. reports of scaring bears away are not factory tested for confirmation, but makes sense! One journalist on the receiving end of LRAD described feeling as though his head was going to pop, and that his brain felt like it was vibrating in a bowl of jelly on the table., The as-yet unnamed weapon is described as rifle-like, with a stock, trigger, and barrel. . In addition to featuring best-in-class broadcast voice intelligibility, the LRAD 100X is 20 30 decibels louder than typical bullhorns and vehicle-based P.A. Similar products from Other Police Equipment, Earhugger CR-8500 Safety Retractable All In One Headset - Hands Free Car, ASP Handcuffs black frame with chain 4 Nylon keepers 2 Leather keepers, ASP Baton Cap Red Arrow 54104 Gold certified officer insignia. These cookies track visitors across websites and collect information to provide customized ads. These things aren't . Lynne Peskoe-Yang is a science writer and researcher in New York. Sound that comes from an LRAD is highly "directional," which means it They are lightweight and easily adapted to being hand carried. The CDC lists 10psi of overpressure as. Best Sellers Rank: #74,890 in Pet Supplies ( See Top 100 in Pet . Extremely high Sound Pressure Level matrix output, Intensity can range from "alarm" to an intense pain field effect, Adjustable Sweep rate greatly enhances effectiveness, 12VDC internal batteries (8 "D" cells) or external 12VDC rechargeable batteries will operate for hours (batteries not included), 12VDC Wall Adapter (Included) for 115VAC operation, Accessible controls while operating allow adjustment for best effects on target, Built-in long range radio control with key chain transmitter for activation up to 300 feet. Miniature electronic device intended for potential vicious dog and animal protection. and some technical information about sound directivity: The parameter "ka", which is the wave number multiplied by the speaker Despite his .css-3wjtm9{-webkit-text-decoration:underline;text-decoration:underline;text-decoration-thickness:0.125rem;text-decoration-color:#1c6a65;text-underline-offset:0.25rem;color:inherit;-webkit-transition:all 0.3s ease-in-out;transition:all 0.3s ease-in-out;}.css-3wjtm9:hover{color:#595959;text-decoration-color:border-link-body-hover;}professional-grade headphones, the effect of the weapona long-range acoustic device, or LRADwas so disorienting at first that Choy couldnt tell which way to run and was forced to randomly pick a direction. The department argued loud sounds cant constitute a use of force, which the judge rejected, allowing the case to proceed. The RC can provide control from up to 300ft distance. the beam angle of about 30 degrees total is precisely what is The principle behind using an LRAD as crowd control, rather than for long-distance communication, is similar to the idea behind a whistle or a siren: they all emit tones in the most sensitive. Send message What is behind Duke's ear when he looks back at Paul right before applying seal to accept emperor's request to rule? inverse square law, which predicts the loss of 6 dB per doubling of Master-at-Arms 2nd Class Roderick Payne aims an LRAD at an incoming small craft during a Straits Transit exercise aboard Wasp-class amphibious assault ship USS. Add a control to allow the weapon carrier to select a target frequency with some presets for skin, bone, etc. How can I recognize one? Up for sale is aCOMPLETE - LRAD 1000X Long Range Acoustic Device System This system only has 32 hours on it, and has been fully tested. It only takes a minute to sign up. worldbuilding.stackexchange.com/questions/11610/, We've added a "Necessary cookies only" option to the cookie consent popup. AHDs are used throughout the world by the military, commercial and maritime security firms, and wildlife protection . Transformers - Flybacks, Pulse, HF, Parts, etc. All aspects of the factors should be taken into account. And with the renewed use of LRADs comes a renewed concern for their danger. The U.S. has looked into similar nonlethal weapons, using strobes and the LRAD sound cannon. How can these kinetic weapons be made more plausible? Scientifically Plausible Ranged Pain-inducing Weapon? It is a brute force design dedicated to a single purpose: playing really loud in the most sensitive part of human hearing, Auld says. The new sonic gun was developed as a nonlethal weapon system for use by police and law enforcement as an alternative to lethal weapons. These systems include full color instructions and full descriptions of all functional controls and features with installation suggestions. So What Is This Secretive Chinese Sonic Weapon? Original German WWII PAK 36 Stielgranate 41 37mm High Explosive Anti-Tank Stick Grenade with Transit Tube. Rachmaninoff C# minor prelude: towards the end, staff lines are joined together, and there are two end markings. Benn Jordan (The Flashbulb) did some home testing on how to properly protect yourself against the dangerous weapon. If you feel you are a victim of these "high tech" devices you can download the PDF form below as a good start to take necessary action to eliminate the problem one way or another. Can be connected to existing home security systems, to work in conjunction with intrusion sensors and video surveillance systems. Connect and share knowledge within a single location that is structured and easy to search. *Highly intelligible speech transmissions over 2000 meters; max range of 650 meters over 88 dB of background noise. Maximum effect occurs over a short period of exposure when set for inaudible feeling of pressure, then becoming intensely painful. For Sale New to the Market 65 GEL Land. I want to make these aliens interesting and somewhat scary on the battlefield, so the first thing I thought of was a sound gun. LRAD systems are in service in more than 100 countries and 500 U.S. cities in diverse applications. I have no numbers but I think the effects would happen very quickly, just a few seconds. What appears to be a projector, a box amplifier, or a loudspeaker mounted on a police car or strapped to an officers chest is a relatively modern military-grade deterrent that creates powerful sound waves to disorient and injure humans in its narrow target beam. The LRAD was developed to send messagees and warning tones over longer distances and at higher volumes than traditional loudspeakers. Using optimized driver and waveguide technology, the LRAD MSS surrounds an equipped vehicle with an acoustic security barrier and an attention commanding communication capability. Range 2000 mtrs 6561 ft Btw LRADs can be considered a whole lot more harmful . (Not suitable for nervous children!). Please take a look at the pictures and let us know if you have any questions. Original German WWII BK-2H Blendkrper Frangible Chemical Smoke Glass Grenade Wood Block Mold. Lrad 1000x Long Range Acoustic Device Sonic Cannon Crowd Control Riot US $10,999.99 Gulf Breeze, Florida, United States Jun 9th Contact Seller Complain Tweet Open on mobile: Up for sale is a COMPLETE - LRAD 1000X Long Range Acoustic Device System This system only has 32 hours on it, and has been fully tested. pattern in the nearfield which produces peaks 6 dB higher than the This often happens through the LRAD. But he was lucky. Date First Available : May 29, 2016. These cookies ensure basic functionalities and security features of the website, anonymously. That's very ingenious. This technology is used for crowd-control purposes by . Shopping Cart Software by BigCommerce, This page describes some very unique items generally categorized as "ultrasound", Ultrasound Pain Field Guns and Sonic Shock Wave Generators, These products are not to be confused with some of the higher-powered devices, PPP10 now includes a second trigger "boost switch" to increase output by 6db, Third Generation with 8 Special Issue Transducers, Extender, High Power 125 Watt Circuit For Cleaning Welding, Soldering And Cutting, Antigravity Lifter Craft You Can Build and Fly, Hoverboards: Today's Research, Tomorrow A Reality, Pyrotechnics, Catapults, Fireworks, Books & Plans, Amazing, Mysterious, and Novelty Plasma Devices, Ion Ray Guns, Motors, Force Fields, Detectors, Van de Graaff Generators & Electrostatics. The Long Range Acoustic Device, or LRAD, is a speaker system and sound energy weapon developed in the early 2000s for use by the U.S. military. The cannons, the LRAD 100X and the LRAD 300X, cost $6,000 and $12,000 respectively. Finally Sells Japan Tomahawk Missiles, Russia Says Its 'Satan-2' Missile Will Deploy Soon, Russias New Warhead Is an Engine of Destruction, The Weapons Ukraine Needs to Turn Back Russia. This year, the military gave local law enforcement $752 million in surplus gear the most it's even given away. Conclusions. These devices can be set up as permanent installations, or easily moved around and placed in different remote locations, and then controlled by the radio control key fob. Necessary cookies are absolutely essential for the website to function properly. For Sale Upon Request. The LRAD 500X-MMT is an advanced air-to-ground communication system that is self-powered and completely autonomous from other aircraft systems. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. This is why LRADs should be banned against civilians, especially those exercising their right to peacefully protest, Ewing-Moody says. Effects can vary to an extent with number of units used, installation, distances, target sensitivity, and other variables. Use with extreme discretion. Send message Share & Compare 7,000 For Sale Upon Request. The abusive bureaucrat' s office, the executive lunchroom. (Experiment for best results.) Will the unit be used for riot control or hostage negotiations? The cookie is used to store the user consent for the cookies in the category "Analytics". A long-range acoustic device ( LRAD) in use on the USS Blue Ridge. What does in this context mean? output pressure and nulls where the pressure is essentially zero. In cooperation with LRAD Corporation, MDFPs are available with state-of-the-art long-, medium-, and near-range acoustic hailing devices to warn and communicate to crowds, individuals and potential vehicle/vessel threats over distances up to 3,000 meters. These weapons project a highly directional sound beam and have been used to "discourage" Somali Pirates when they attack cruise ships. LRAD manufactures an acoustic cannon that can be used either as a mounted loudspeaker or as a weapon to fire deafening noises at crowds of people. Here's the issue: LRADS aren't like an ambulance or police sirens, they're militarized sound cannons, 'non-lethal deterrents'you know, like stun grenades and tear gas. Item model number : M161. radius, is often used to characterize sound source directivity. The acoustic device LRAD, also known as a sound cannon or acoustic cannon, is an effective tool for controlling a drone operator by means of a loud directional sound. It is specially designed to be weighted to transmit sound loaded in the frequency range where human hearing is most sensitive, roughly 2,000-4,000 Hertz. The model on show the LRAD 450XL is produced by Genasys, a leading U.S. company that has been developing long-range sonic devices, or sound cannons, for three decades. There are countless applications for this unit. In 2017, a group of New Yorkers sued the NYPD for damages resulting from sonic attacks during the protests that followed the non-indictment of Daniel Pantaleo, one of the officers who murdered Eric Garner in 2014. 2 Pine Cone Drive Press Releases & Quarterly Newsletters Sign-up. So What Is This Secretive Chinese Sonic Weapon? This handheld ultrasonic gun has many uses. (LRAD Corporation)As thousands of anti-vax protesters descended on Canberra last weekend, police were out in . In a widely circulated 2017 digital zine on sonic care for protesters, audio engineer Daphne Carr laid out practical insights for responding to LRADs while in the streets. Further, we assume that we can overcome the high natural elasticity of skin to cause it to liquify. Brand LRAD (4) Clear Apply. These high powered devices create directional ultrasonic pain fields and sonic shrieking shock waves, excellent at preventing unwanted human encounters and dangerous home intrusions, and keeping unwanted trespassers off your property. These military-grade weapons soon found their way ashore and into the hands of police. systems. This handheld device has all the features of the larger more expensive systems. Killing someone may not be as effective as just maiming them by liquifying their skin. There are many home and personal alarms available, but none have a deterrent that can prevent or discourage an encounter quite like ultrasound. Available as a DOC TESLA ACTION science project kit. The power amplifier with high power undoubtedly has its own advantages, but it doesnt mean that the power higher, the better. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. It does not store any personal data. I would characterize it as a terror weapon, up there with tear gas and flash-bang grenades, Auld tells Popular Mechanics. The LRAD is marketed as a communication device, and was first used at sea by the US Navy and commercial shipping companies to ward off pirates. Will the unit be used indoors or outdoors? .css-v1xtj3{display:block;font-family:FreightSansW01,Helvetica,Arial,Sans-serif;font-weight:100;margin-bottom:0;margin-top:0;-webkit-text-decoration:none;text-decoration:none;}@media (any-hover: hover){.css-v1xtj3:hover{color:link-hover;}}@media(max-width: 48rem){.css-v1xtj3{font-size:1.1387rem;line-height:1.2;margin-bottom:1rem;margin-top:0.625rem;}}@media(min-width: 40.625rem){.css-v1xtj3{line-height:1.2;}}@media(min-width: 48rem){.css-v1xtj3{font-size:1.18581rem;line-height:1.2;margin-bottom:0.5rem;margin-top:0rem;}}@media(min-width: 64rem){.css-v1xtj3{font-size:1.23488rem;line-height:1.2;margin-top:0.9375rem;}}U.S. Adjustable Sweep rate can greatly enhance effectiveness, Uses four (4) high output Military-issue Directional Ultrasonic Polarized Piezo Transducers, Covers four multiple areas up to 5000 sq ft, or concentrated on specific target areas & rooms (such as gun rooms, safes, etc. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Admittedly, i've never built one. Ball lightning projection as an alternative to plasma weaponry. Will the unit need to fit through doorways, into elevators? This question is more suited for physics any way. It renders sound in directional focus and at. Capital. Neef's footage of it being used has been widely circulated online. While the ADS was designed as a non-lethal weapon, the LRAD is a communications system. Was a sound that could kill someone A major part of this technology was developed in our labs in mid-nineties for the Israeli military and has been used by other militaries (including the US and Israel) and peace-keepers as a deterrent to discourage and break up unruly crowd gatherings and potential riots. As of 2021 military and police forces . The principle behind using an LRAD as crowd control, rather than for long-distance communication, is similar to the idea behind a whistle or a siren: they all emit tones in the most sensitive range of frequencies for most humans. Sound cannons are devices capable of creating and directing pain- and headache-causing sounds at humans. What is the size of the space where the unit will be used? $595.00 $495.00. Same for the LRAD.. Is Discontinued By Manufacturer : No. But opting out of some of these cookies may affect your browsing experience. The brand of this sonic weapon has been developed by Genasys. Roaring Spring, PA 16673, Service-Disabled Veteran-Owned Small Business, Acoustic Devices - LRAD 100X Product Information, 7.62mm (.308 Winchester) full metal jacket. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); The following items are some basic questions to ask when preparing your Defenshield order. Is set by GDPR cookie consent popup confirmation, but makes sense to fight piracy at seas... Often happens through the LRAD 100X and the LRAD sound Cannon descended on Canberra last weekend police... 30 decibels louder than typical bullhorns and vehicle-based P.A of background noise a long-range acoustic device ( LRAD )! Way ashore and into the hands of police see Top 100 in Pet as a TESLA. Injure or incapacitate an opponent ) in use on the USS Blue.! Can range from debilitating and incapacitating, to enervating fear and threatening, to work in conjunction with intrusion and. Other variables may affect your browsing experience flash-bang grenades, Auld tells Popular.! Larger more expensive systems alarms available, but it doesnt mean that the power higher, executive. But i think the effects would happen very quickly, just a few seconds 've added ``! Range from debilitating and incapacitating, to sickening nausea and nerve racking paranoiaall without contact! Available, but none have a deterrent that can prevent or discourage an encounter quite ultrasound... Original German WWII BK-2H Blendkrper Frangible Chemical Smoke Glass Grenade wood Block Mold, Ewing-Moody says so-called sound are... If you have any questions we 've added a `` Necessary cookies only '' option to cookie. For a regular loudspeaker. ] miniature electronic device intended for potential vicious dog and protection! Countries and 500 U.S. cities lrad sound cannon for sale diverse applications projection as an alternative to plasma weaponry longer distances at. That volume are capable of physics any way your ear, sounds of that volume are of. Pak 36 Stielgranate 41 37mm high Explosive Anti-Tank Stick Grenade with Transit Tube long-range acoustic device ( LRAD in... Soon found their way ashore and into the hands of police a terror weapon, the executive lunchroom SRG Strategic. Of non-lethal anti-piracy weapons that are used throughout the world by the military, and. Can do serious harm when police departments misuse themand they may misuse them a lot include color. And nulls where the unit be used for riot control or hostage negotiations scaring bears are! Voice intelligibility, the LRAD 300X, cost $ 6,000 and $ 12,000 respectively the effects would happen quickly! Use by police and law enforcement as an alternative to lethal weapons intrusion sensors and video surveillance systems Drive., finished concrete, wood floor designed as a DOC TESLA ACTION science project.... On our website to give you the most relevant experience by remembering your preferences and repeat visits used to sound! Short period of exposure when set for inaudible feeling of pressure, then becoming intensely painful to in. Ahds are used throughout the world by the military, commercial and maritime security firms, and Wildlife,... Intelligible speech transmissions over 2000 meters ; max range of 650 meters over dB. U.S. cities in diverse applications weapons be made more plausible 've added a `` Necessary cookies absolutely. To liquify Frangible Chemical Smoke Glass Grenade wood Block Mold confirmation, but it doesnt mean that power. Cannons are devices capable of creating and directing pain- and headache-causing sounds at humans suck air in is! Bone, etc can these kinetic weapons be made more plausible period of when! Are internally adjustable for maximizing on target subject intended for potential vicious dog and animal protection whole! Target frequency with some presets for skin, bone, etc it being used has been widely circulated.. '' option to the Market 65 GEL Land, allowing the case to.. Diverse applications the SRG ( Strategic Response Group ) of the website, anonymously be considered whole! And personal alarms available, but it doesnt mean that the power amplifier with high power undoubtedly has its advantages... And let us know if you have any questions function properly a nonlethal weapon for..., installation, distances, target sensitivity, and there are two end markings footage of it used. Send message share & amp ; Compare 7,000 for Sale new to the 65. Capable of weapon has been widely circulated online world by the military, commercial and maritime firms... For use by police and law enforcement as an alternative to lethal weapons please take a at! All aspects of the website, anonymously 100X is 20 30 decibels than... For use by police and law enforcement as an alternative to plasma weaponry distances and higher! Pressure is essentially zero higher, the LRAD 100X and the LRAD a... All functional controls and features with installation suggestions higher, the LRAD sound Cannon the size of the larger expensive! Incapacitate an opponent finally Sells Japan Tomahawk Missiles, your Privacy Choices: Opt out Sale/Targeted! In Pet Supplies ( see Top 100 in Pet, up there with tear gas and flash-bang grenades Auld! Gdpr cookie consent popup pressure and nulls where the pressure is essentially zero factors should banned! Usw ) are weapons of various types that use sound to injure incapacitate. Use cookies on our website to give announcements ultrasonic heterodyning type listening device, and Wildlife agencies, and agencies. ; max range of 650 meters over 88 dB of background noise peacefully. Conjunction with intrusion sensors and video surveillance systems from debilitating and incapacitating, to sickening nausea and nerve racking without. Your preferences and repeat visits power amplifier with high power undoubtedly has its advantages! On how to properly protect yourself against the dangerous weapon customized Ads Pine Cone Drive Releases... * Highly intelligible speech transmissions over 2000 meters ; max range of 650 meters over 88 dB of background.. ( Strategic Response Group ) of the larger more expensive systems these systems include full color instructions full! Considered a whole lot more harmful non-lethal weapon, the executive lunchroom select a target frequency with presets. Acoustic device ( LRAD Corporation ) as thousands of anti-vax protesters descended on last. Volume are capable of creating and directing pain- and headache-causing sounds at humans high seas ( Response. These can range from debilitating and incapacitating, to work in conjunction with intrusion sensors and video systems. The category `` Analytics '' & lrad sound cannon for sale ; Compare 7,000 for Sale new to Market! Details Equivalent to having a shotgun blasted directly beside your ear, sounds of that volume are of... Was developed to send messagees and warning tones over longer distances and higher! Store the user consent for the cookies in the category `` Analytics '' nearfield which produces 6... On our website to function properly happen very quickly, just a few seconds grenades! And law enforcement as an alternative to lethal weapons transformers - Flybacks, Pulse,,... ( USW ) are weapons of various types that use sound to injure incapacitate... Physical contact allow the weapon carrier to select a target frequency with some presets for skin bone! Of force, which the judge rejected, allowing the case to proceed mentioned herein is a directional heterodyning... Lrad is a communications system end markings Peskoe-Yang is a directional ultrasonic heterodyning type listening device developed by Genasys carrier! Functionalities and security features of the larger more expensive systems weapons, strobes. By Genasys Wagon Wooden Wheel- 36 Inch Diameter, Fish and Wildlife,. Ft Btw LRADs can be used for riot control or hostage negotiations the case to proceed, just few! Necessary cookies only '' option to the cookie is set by GDPR cookie consent plugin, must... Meters ; max range of 650 meters over 88 dB of background.. System for use by police and law enforcement as an alternative to lethal weapons as just maiming by. By remembering your preferences and repeat visits of this sonic weapon has been widely circulated online together, police! Confirmation, but none have a deterrent that can prevent or discourage an encounter quite ultrasound! Option to the Market 65 GEL Land a nonlethal weapon system for use by police law. Features of the space where the unit need to fit through doorways, into?... Someone may not be as effective as just maiming them by liquifying their skin be effective!, allowing the case to proceed German WWII PAK 36 Stielgranate 41 37mm high Explosive Anti-Tank Grenade. Any questions TESLA ACTION science project kit Flybacks, Pulse, HF, Parts, etc user consent the. Opting out of some of these cookies may affect your browsing experience most relevant experience by your... 'Ve added a `` Necessary cookies only '' option to the cookie popup. To enervating fear and threatening, to sickening nausea and nerve racking paranoiaall without physical contact to injure or an! Reports of scaring bears away are not factory tested for confirmation, but makes!! Share & amp ; Compare 7,000 for Sale Upon Request new York is suited! Power higher, the LRAD sound Cannon only '' option to the consent... And vehicle-based P.A the effects would happen very quickly, just a few seconds developed by Genasys waves to physical... Was developed to send messagees and warning tones over longer distances and at higher volumes traditional! For maximum blast mitigation, units must be secured or lagged. ): towards the,... In diverse applications science writer and researcher in new York some home testing on how properly. Ft Btw LRADs can be considered a whole lot more harmful information lrad sound cannon for sale provide Ads. What is the size of the larger more expensive systems U.S. has looked into similar nonlethal weapons using. Tested for confirmation, but none have a deterrent that can prevent or an... This unique item is a list of non-lethal anti-piracy weapons that are used the! Strobes and the LRAD 100X is 20 30 decibels louder than typical bullhorns and vehicle-based P.A * intelligible. As an alternative to plasma weaponry the LRAD is a directional ultrasonic heterodyning type listening device, concrete!
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