Jamming devices are gradually playing an important role in the civil field

As a boss or a manager, you’ll find it is a hard task to manage your employees and improve their working efficiency. They will try all they can to loaf on the job in a way you can’t catch or blame to. For an example, they will go to the bathroom to use their cell phones. It will hardly work even if you strictly require your employees not to use their cell phone or put this rule into strict regulations. Thus, not only your company will be considered as not humanized, but also you will lose your kindness in their heart.

Air Force Col. John Dorrian, a spokesman for Combined Joint Task Force-Operation Inherent Resolve, would only describe the devices given to the Iraqis as “GPS jammer.” Dorrian has previously said that U.S forces advising and training the Iraqis have their own jammers to counter drones.

There is very little detail on how this “Sky Fence” product works. This very thin spec-sheet for a seemingly related product from the company intimates that it uses some kind of RF jamming to prevent drone operators from contacting their drones, and also jams GPS frequencies that might let drones fly on their own.

I can imagine how this could be somewhat effective. A drone designed to land when it loses contact with its base-station could be forced into a landing through an RF-jamming denial of service, and such a countermeasure might pass frequency-utilisation regulations if it were well-behaved (for example, if it were narrowly transmitted with a phased array antenna to minimise jamming of other users of the band). But disrupting GPS signals is a lot more troubling/problematic, as this has the potential to seriously mess up a lot of legitimate activity and what’s more, the band that GPS operates in is a lot more tightly regulated that the shared-use bands used for drone control.

Just as a parent has the ability and right to cut off the Wi-Fi at home, they should have the option to cut the cellular signal if desired. Grabbing phones from hands to put them in airplane mode probably won’t work, and making the house into a Faraday cage is an extreme only the tin-foil hat crowd should try. But an in-home cell phone jammer should be an option whenever desired or necessary. (Just keep that landline, folks.)

Many counter-drone technologies, however, are far less dramatic and instead rely on radio-frequency jamming to take out the offending UAV. The DoD’s Navy Special Warfare Command in July signed a $1.5 million contract with SkySafe to develop a vehicle-mounted RF jammer that can identify, track and disable enemy UAVs before they can get close enough to do harm to friendly troops.