Perhaps someone here can help a noob. When I equip the proximity alarm, am I looking for something on my radar to show up or is it an audible noise? Is there a thread or site that goes into detail about all this stuff?

This is me playing with proximity alert III. Listen carefully.

http://www.youtube.com/watch?v=0g96Cq_WiQo

Is it that humming sound? I thought that was associated with the suit. It seems like the proximity alarm is also that red half-outline on your radar. Am I correct? Thanks for the response!

Its the pulsating sound that gets louder when an enemy gets closer. I think the red outline is what level 1 does.

Ah I think I hear it now, I'll have to see if I can pick that out in the middle of a game though! Thanks!