Originally Posted by Trotter
Get a USB adapter and a USB extension cable. Make a parabolic dish out of foil (use a bowl as a mold for it), poke a hole in the bottom for the adapter, tape it there (make sure no foil touches the metal), connect it to your lappy with the extension cable, and tape it up pointed wherever you get the best signal.
I did this to receive Wifi from the local hospital a few years back. 300+ meters between us, and could still connect to a sustainable signal. Albeit, the huge aluminum foil dish on my balcony made me look a little psychotic... (That's what my neighbors said)
When you do this, make sure you make the aluminum foil as SMOOTH as possible. (Take a small roller to it, if possible.)