Help Cracking noise in ear piece?

[CarbineGuy]

I recently got a call from a friend of mine, and his voice came through crystal clear, but when I would talk, I would hear this cracking noise in the ear piece. I have pretty good reception where I am, so I don't know what's causing this problem. Anyone else experience this?

 

[joehero]

Yes, though it happens so rarely I don't worry about it.

 

[CarbineGuy]

Does it come and go, or is a defect?