Subject: How far can radio waves travel?

As I understand it, radio and TV waves travel through space and are 
detectable if you have the proper equipment. However, after a certain
point, those waves will andquot;break upandquot; and fall apart. How far can they 
travel before this occurs? Supposing you planted a receiver/transmitter 
out in space, could you then theoretically pick up these radio waves
and them beam them out again to extend their andquot;lifeandquot;, sort of like a 
relay station? Could you even have a series or network of relay stations
so that a radio wave originating on earth could be picked up and read
hundreds of light years away?

Re: How far can radio waves travel?