Comment Ubiquity nano station is your solution (Score 0) 300
Ubiquity http://www.ubnt.com/ has a device called a nano station it is perfect for your needs it can share the connection using wireless over distances up to 5 miles. but the range can be limited in the device via power management. they run DD-wrt and can be configured as access point or point to point connections. I have used them for years as a network solutions provider.