However, jamming your enemy's radar has one big weakness. Your enemy will know someone is nearby. But not the other way around. Hence, you're basically just giving enemies a clue that you're around somewhere. When my radar gets jammed, i cloak and run to one corner, and turn on nano vision. I get them most of the time.
I think one important aspect about this game is to be hidden. Cloaking and jamming that guy's radar just doesn't cut it.