A financial company installed a Homemade Cell Phone Jammer device in the warehouse where the mortgaged car was stored to block the GPS signal of the vehicle, and at the same time blocked the signal of the baseline observation pier set up by the Provincial Bureau of Surveying, Mapping and Geographic Information. Recently, the Harbin National Security Bureau Technology Security Office and Harbin Radio Management Office jointly investigated and dealt with this case of illegal installation of vehicle positioning cell phone jammer , which caused the country's important infrastructure to fail to work. At the end of last year, technicians from the Heilongjiang Surveying, Mapping and Measuring Instrument Verification Station of the Provincial Bureau of Surveying, Mapping and Geoinformation found that GPS signals could not be received near a national surveying marker point in Wangha Village, Yushu Town, Daoli District, and the verification work could not be carried out. After a period of time, no signal was obtained after repeated data monitoring on this baseline observation pier. In April this year, the verification station reported to the Harbin State Security Bureau, requesting technical support for signal investigation.
The Harbin State Security Bureau's Technical Security Office went to Wangha Village in late April to investigate the source of interference and found that the source of the interference signal was in a warehouse in Wangha Village, within 60 meters northeast of the baseline observation pier. After identifying it as civilian non-espionage equipment, on May 4, the Harbin State Security Bureau and Harbin Radio Management Office carried out law enforcement and ban. The technicians found that the source of interference was 5 Homemade Cell Phone Jammer s set up in the warehouse of a mortgaged vehicle of a financial company through direction finding and positioning, and the interference disappeared when the mobile phone signal jammer was turned off. According to Liu, the person in charge of the warehouse, in October last year, the company leased the warehouse to store the mortgaged vehicles. The radio transmission equipment was distributed by the company. I heard that it can block the GPS signal on the vehicle and prevent the mortgaged vehicle from being stolen. In the end, the Municipal Radio Management Office accused the company of setting up and using radio transmission equipment without authorization, which caused the national important geographic coordinate survey facilities to fail to work normally. Since the beginning of this year, the Municipal Radio Management Office has investigated and dealt with 5 cases of unauthorized installation and use of mobile phone signal jammers. The Harbin National Security Bureau Technology Security Office announced that if you find any damage to the country's key infrastructure and information systems and data in important areas, as well as relevant clues that endanger national security, please call the national security reporting line 12339.
