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The atmosphere of the November 18 rally in Ratchaprasong area That protesters announced to raise the level Ready assembly announced that Everyone prepare different cans of paint. To display the emblem in front of the Royal Thai Police. Ready to change the name to “The wishes of the people”
Found by Twitter FreeYOUTH Tweeted that “Today, it is considered that a vehicle with vehicles equipped with LRAD can transmit sound waves of more than 130 decibels and a distance of up to 600 meters. People approaching 120 meters may experience hearing loss. Prepare earplugs for ears. Be careful and stay as far away from your vehicle as possible with the LRAD kit. “
At 5:30 pm, the reporter reported that the police had installed a Long Range Acoustic Device (LRAD) in a high pressure water jet (Gino) stationed at the Royal Thai Police. It is a kind of crowd control device in the international standard. It is used to prevent the entry of any intrusion. Send a warning signal to the police. And a tool to help break the assembly
Properties of L. Rhino Does not cause permanent injury Or affect the eardrum in the rubber That can transmit special noise waves With a volume of up to 151 decibels to push the crowd. It works much more than tear gas and rubber bullets. And it is the tool that violates human rights the least AND transmits sound waves up to 3,000 meters with clear sound at any distance AND can direct sound to be specific to the target
The high-frequency amplifier came to be used with the rally as a special custom-made amplifier car worth up to 7 million baht per vehicle, called “L-RAD” or in Thai it means long-range amplifier (LRAD: Long Range Acoustic Device) was used with disturbance suppression as one of the universal measures from light to heavy. It is used to deter, preventing the entry of intruders. It is a red flag for the police, a tool that can be used to disperse protests without injury.
The machine was born in the United States in the wake of the 2000 attack on the USS Cole, when a terrorist piloted a small explosives transporter and crashed the ship. Government of the United States therefore gave funding for research to private companies. He developed a variety of anti-attack equipment until the development of rhinoceros sound wave weapons was successfully developed.
In this sense, work on the first objective of the police It is used to warn protesters not to approach the prohibited area. That this device is no different from the general speakers but it is a speaker that can speak Recordable as MP3 / WMA at a distance of 300 meters to 3000 meters, you can determine the direction of the sound. How to work by firing high frequency sound waves at the crowd Which will make the person receiving the voice unbearable. Sometimes it also causes temporary deafness. This machine has been recognized as Minimal violation of human rights. Therefore, the police chose this method first.
Rhino’s properties as a tool to provoke riots, break up rallies, not cause violence. Either it has a permanent injury OR long-term effects on the eardrum It is capable of transmitting special noise waves of up to 151 decibels to propel groups such as soldiers along sovereign borders. And it can be used in search or suppression missions that hope to outperform tear gas or rubber bullets. And considered the least violation of human rights
It can transmit sound waves over 3,000 meters with clear sound at any distance. Suitable for public relations reminders of large groups of people Show clear intention in communication. And to increase the safety of the personnel Of the group of people in question And you can set the direction of the sound to be specific Reach the goal Can be used in all weather conditions. It can be used in conjunction with other devices, such as a bulb or a thermometer. To improve work efficiency
Currently, Thailand has 2 machines in police possession, two of which are large for use with generators. It has a distance of 3 kilometers of sound waves, a price of 2 million baht and a small size to carry, it has a distance of 300-500 meters of sound waves, 7 hundred thousand baht, which is in the possession of the NCC. Until now after that use No one has been injured until they must be hospitalized.
What to know, LRAD is a weapon of war. You can only trade from state to state. LRADs are widely used in Iraq for crowd control. And the United Nations approved it. LRAD will fire sound waves. Get ear plugs that can ease ear pain for a while. But if in a special sound wave for a long time, it can not be tolerated. Also, people with earplugs will lose all their hearing. From both your own voice and your associates around the LRAD, it can cause nausea and vomiting, but it will heal completely when you are out of the direction of the sound. LRAD does not have a long-term effect.
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