ALIENS Question - looking for motion tracker sound effect

Hey, all.

Technically, this is a post on 'Aliens', but this is the closest group
I could find. ;)

I was thinking about capturing the sound of the motion tracker in the
Aliens movie, and using it as a cel phone ring.

I have already captured a sound sample, and it's not bad, but I'm
hoping there might be some other samples that are of better quality out
there, either from the movie or the game.

Any ideas?

Thanks!

BD