You can run antenna's a LONG ways from your wifi card by simply hooking up a VERY long wire. It's the same principle as your satellite dish.

This is also how you do testing of wifi in a way that won't interfere with outside signals.

It's the same principle as the old coax networks.

Not the first time that's been considered. https://electronics.stackexchange.com/questions/103443/close... No follow-up on whether it actually worked though.