I need to spread reasonably reliable wireless across a ~200ft gap with a few walls and trees in between. I have a WRT54G v4 router running Tomato firmware and need to figure out what hardware I need to ensure that a stable connection is available to the furthest wireless client. No wired connection is available in the top building. Does anyone have a suggestion for how to solve this? I have three of these, if it helps. But I tried them and the signal seems pretty poor. I am willing to buy new hardware to accomplish this.
Here is an accurately scaled map showing the buildings and current setup:
Here is an accurately scaled map showing the buildings and current setup: