The most notorious GPS jamming event in GPS history has to be the San Diego Airport outage. One incident caused the flight control room at San Diego Airport to skyrocket, wondering and panicking what happened. ATM turned down customers and the port's traffic management system fell into chaos. This is all caused by cell phone jammer. This clearly shows that the GPS device can not only run Sat Nav on the car, but can also do a lot of work.

In a sense, GPS is a silent force that powers the modern communications world. Cellular providers use GPS time signals to coordinate communications between your phone and cell towers. When the power is connected, they will turn to GPS to sync. Banks and stock exchanges use GPS / GNSS for timestamp transactions, otherwise commercial transactions are not possible.

After three days of investigation, it was finally determined that it was a GPS jammer. This is a program the Navy should test if communications are lost. In addition, the technician accidentally disrupted the GPS sign. Unfortunately, the intervention expertise is not limited to the navy or the army, nor is it made available to the navy or the army. Another notorious incident occurred when truck drivers used GPS jammers near the airport to avoid being tracked! The online price of GPS jammers is less than US $ 30 greenback, but use of the device is only illegal in some countries. Many people around the world are unaware of the dangers and harm that these devices can cause.

Is there anything i can find jammers?

6 Antennas Handheld GSM 3G 4G Phone Jammers Disturb GPS Lojack WIFI Signal Bands
In fact, the GPS jammer can still be found, but its location cannot be found. The company claims its 1st six hundred pound GPS congestion detector and tracking device can use wave jammers in multi-story parking lots to identify vehicles and pinpoint portable devices in their pockets when drivers exit the car. Touching! Of course they didn't explain how the machine works, but some people think it must be some kind of signal triangulation. Unfortunately, this only applies to L1 signals. I think they are also trying to cover the L2 sign.
https://topsignaljammer.com/