I wonder if it is susceptible to standard surface to air counter measures?
My neighbor is a radio engineer who designs comm and nav equip for the gov. He says these jamming devices are not difficult to make if you know what you are doing. Of course I would have a clue.
Drones gun is the first ever portable equipment which can can jam all drones frequencies in the radius up to 800 meters.
All you need to do is to point the gun to the drone and all the frequencies will be jammed immediately. The internal antennas was developed in the way that it doesn't affect the human so radiation from this device is similar to the radiation from two cell phones.
The Drones Gun goes with two batteries which will allow you to use this device up to 6 hours continuously.
Jamming Frequencies:
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5,1-5,5 GHz
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5,5-5,9 GHz
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Wi-Fi 2,4 GHz: 2400-2500 MHz
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GPS L1: 1575 MHz
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GPSL2: 1227 MHz
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GPS L3: 1176,45 MHz
https://www.jammer-store.com/drone-gun.html