Just do it!
You'd be literally 'cooking' the soldiers in the convoy. They don't put those radiation markings on the ECM pods on the EA-6B for nothing. Still, I think something with lower power & crew shielding could run interference for a convoy. Mount it in an armored "Gun Truck".
How about using unmanned drones to be the eyes, ears and fist of this system, responding only to commands from the far away and untouchable brain?
If the tax dollars we spend on our military, science and research is not intended to protect our country, our way of life, and provide as much safety as possible for our young sons and daughters in uniform. What the hell do we expect in return?