Michael A. Lowry writes: "You may remember how Robert Cringely used a couple of directional antennas to get an 802.11b link up across a 10.5 km wide valley. The original Slashdot discussion is here. Well Cringely has done it again. This time, he has set up a passive repeater in an oak tree on a nearby mountaintop to bounce a 2 Mb/s signal around a hill that lies between his house and the acces point in Santa Rosa. Read about it here. Details about the homemade hardware he used can be found here. There's going to be a lot more of this in the near future."