The Pulse Blade is a throwing knife that will emit a radar pulse and allow you and your entire team to see the outline of an enemy through any terrain, in a limited range. Getting a direct hit with the knife will result in an instant kill. The Sonar Pulse is a pilot sized version of Tone'sSonar Lock, however the Pulse Blade will emit radar signals for longer.
Use it at the beginning of a match to get an advantage over the enemy- you know where they are and can hunt them down.
Use it to identify the positions of enemies in a general area.