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Radar jamming - Zhengzhou weather radar jamming

Test Background 

The weather radar of Zhengzhou Meteorological Bureau was continuously interfered by unknown signals and could not work normally.

The forecasting work brings great hidden dangers. After receiving the "Notice on Investigating Weather Radar Radio Interference" from the Henan Provincial Department of Industry and Information Technology, the Henan Provincial Radio Monitoring Station attached great importance to it, made careful arrangements, and quickly established a weather radar interference investigation team, formulated an emergency plan for interference investigation, and arranged the investigation work. .  

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Test process one: Zhengzhou Meteorological Bureau radar station 

Through the extremely high sensitivity of the "Shark" 3310 and the very good directivity of the handheld antenna, it can be clearly seen that the radar uses

There are abnormally prominent interference signal waveforms in 2720MHz-2740MHz, and the lift is most obvious when pointing to several nearby high-rise buildings.  

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Test process 2: Use ADFA automatic direction finding antenna to test the location of suspected interference sources

It was found through road testing that the source of interference was most likely located near the Aimu International Hotel.  

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Test process three: near Aimu International Hotel

By switching portable antennas for on-site approximation, the source of interference was successfully found to be the monitoring bridge device in the hotel elevator.

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By powering off the equipment to verify, the interference waveform on the equipment disappears, and after confirming with the radar staff of the Meteorological Bureau, the interference disappears.

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Summary: 

Because most wireless bridge devices can realize the spread spectrum technology and avoid the 2.4G congested frequency band, illegally spread the spectrum to 2.7G, and the interference source is placed in the sightseeing elevator, the signal loss is small and the distance is close, causing the weather radar interference.  

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More radar interference cases are as follows. If you need to know about relevant cases, please contact our sales, thank you.

Radar Jamming-Meteorological Radar Jamming at Hainan Airport

Other Cases

Recently, Shenzhen Baoan Airport near the channel repeatedly found flights reported GPS loss failure, the relevant departments organized the airport near the channel GPS frequency abnormal use of mapping, through the preliminary investigation found Chang'an New Century Yiju around the existence of abnormal GPS signal emission phenomenon.

GPS jamming-Dongguan airport GPS jamming

Detail

Through Zhenjiang monitoring station comrades monitoring the radio frequency found that the 91.13MHz frequency broadcast content is false and vulgar, filled with a large number of drug marketing, pornography and other illegal advertising, easy to make the masses deceived, by checking the approval of the radio station, found that 91.13MHz has not been approved, there is a "black radio" nature.

Find "Black Radio" - Zhenjiang "91.13M" Search

Detail

Through the Wenzhou monitoring station comrades monitored the use of 1.4G frequency, but did not do the frequency registration, belong to the illegal use of the frequency.

Illegal Station Finder - Wenzhou 1.4G Finder

Detail