Recently, residents near the Guixi Cement Plant in Guiyang reported that their mobile phone signals are often unstable and often disconnected and cannot be used normally. After investigation by the staff of the Guizhou Provincial Radio Monitoring Station, it was found that the source of the problem was in a nearby residential building. There is a GPS jammer, the GPS is dropped, and jammer interference is received. At about one o'clock noon on June 9, the monitoring personnel of the Guizhou Provincial Radio Monitoring Station took the monitoring equipment to the scene to investigate the interference source. At about two o’clock in the afternoon, the monitoring vehicle came to Wangmin Road in Huaxi District by the side of the roadside houses. The staff found that the staff: Obviously the frequency spectrum of this piece is abnormal. Under normal circumstances, the GPS frequency spectrum should be the same as the one on the left. It will interfere with the normal reception of GPS. GPS drops, especially when the 4G base station drops, the whole base station will stop working.
Immediately, the monitoring personnel carried portable monitoring equipment and began to investigate the houses on the roadside one by one. When they approached a six-story house, the interference signal increased. However, the monitoring personnel found that all floors of this building were installed with rolling gates, making it inaccessible. When it came to the fifth floor, the interference signal reached its maximum value. The monitoring personnel lifted the rolling shutter and found that behind the door, the room was full of various vehicles. The same situation also existed on the third floor of this private house. There were also a large number of cars parked behind the rolling shutter. The reporter saw that in the house. There is a device with an antenna hanging on the wall of the monitor. The monitoring personnel said that it is a jammer. At this time, there is a big gap in the normal frequency band on the monitor. Staff: It is broadband interference. Basically, 1500MHZ is completely covered. 1500MHZ is the channel used by GPS and Beidou satellites. After the interference, nearby satellites cannot be found. So what exactly is this signal jammer used for? Why are these cars parked on the floor instead of on the outdoor road?
Zhang Qing, Chief of the Monitoring Section of the Guizhou Radio Monitoring Station: I guess this is the place where the mortgage car is stored. It is to interfere with the GPS signal in the car and cannot be transmitted back to the owner. Because it is a mortgage car, it is for this purpose. Set, but this is illegal. However, at the scene, the monitoring staff did not find the person in charge of the warehouse and could not enter the site to learn more about the situation. Subsequently, the police from the Anti-fraud Center of the Guiyang Public Security Bureau contacted the landlord. One hour later, the person in charge of the private house came to the scene. He told the police that the third and fifth floors were rented to two people in charge of the people's house: the third and fifth floors are not mine, but I know, I can call. At five o'clock in the afternoon, after waiting for more than two hours, Yang and Hu, the renters on the third and fifth floors, came to the scene. When Yang, the renter of the warehouse on the third floor, opened the warehouse door, the reporter saw 30 or 40 cars parked inside. After that, the staff immediately searched the shielding device in the warehouse and found three sets on the three walls. Shield.
Yang: Some signals need to be shielded. : Because there are a lot of old Lai Lai now, he doesn't pay back the money, because it will be troublesome to get economic disputes. These jammers have been installed for more than half a year, and they were only installed to avoid disputes. These cars are all legally acquired by them, but there are related procedures. Subsequently, after criticizing and educating Yang, the staff of the monitoring station seized all the shields in accordance with the procedures. Staff: This device will interfere with normal radio communications. We implement evidence preservation in accordance with the law, and we must take the evidence away. Afterwards, the staff went to the fifth-floor warehouse and found that thirty or forty cars were also parked inside. On the wall of this house, the staff seized six sets of shielding devices. Each jammer has seven antennas, and the monitors said that it seems that the transmitting power is extremely high. Hu said that he was in a second-hand car business and his vehicles were also legally acquired. He also received a complaint because of the installation of the jammer before, and then he did not use it.
Sun Jianmin, deputy director of the Guizhou Provincial Radio Monitoring Station, said that unauthorized installation and use of radio equipment will still be investigated and punished. In violation of Article 29 of the "Regulations on Radio Management of Guizhou Province," no individual or unit may install radio equipment and frequency bands without permission. This GPS jammer is a technical blocking device, and the staff of the mobile radio monitoring station that day was confiscated. Nine sets of GPS jammers were installed.