[Coreyfro] recently sent me a thank you note for the biquad wifi antenna article I did for Engadget last fall. He directed me to his monster Beerquad antenna he built based on it. While searching for materials to build his antenna he discovered that flattened Guinness cans are the perfect size for regular antennas and that 25oz Labatt cans make for great double wide versions. He says the reception is great . I’m sure he’ll raise some OpSec eyebrows once he gets the laptop mount done. Most biquad wifi projects on the web are based on Trevor Marshall’s antenna.