What exactly does these equipments do? They’ve very common in presidential convoys

Answer 👇👇👇

That vehicle with a roof covered in antennas is an electronic countermeasures (ECM) vehicle. its job is to make the air around the convoy useless for radio.

The most common way to set off a roadside bomb from a distance is a radio signal. A cheap phhone, a walkie-talkie, a car key fob, a garage door remote basically someone watches the convoy, presses a button, the signal reaches the receiver on the device. That’s a remote-controlled IED.

The vehicle does barrage jamming. It blasts strong noise across whole frequency bands at once, including cellular, VHF/UHF radio, GPS and common remote-control frequencies so any receiver near the convoy hears the noise louder than any real signal so the trigger command never gets through.

It will also kill GPS trackers someone might have planted on the vehicle.

It will also affect every phone near the motorcade. If you notice that’s why your signal drops when a convoy like that passes.