I was always under the assumption that the antenna on wireless routers did both send and receive, however I am beginning to question my original thought. If a router has multiple antenna is one used for sending data and one for receiving?
I have this D-Link Router -- http://www.dlink.com/products/?pid=530
which has 3 antenna. Now there is an extra antenna in the mix of this equation. Do I need to go through the legwork of trying to figure out which of these antenna's is doing the sending and which is doing the receiving or are all 3 antenna doing both?