On my wireless thingy- it has two antennae. I made two tinfoil "dishes" around them. The antenna are always at the focal point so they can receive signals from

On my wireless thingy- it has two antennae. I made two tinfoil "dishes" around them. The antenna are always at the focal point so they can receive signals from farther away. It works- but if it is not at the focal point it might not work, so my suggestion is drawing the hyperbola first and then finding the focal point.