I have dsl internet coming through a wireless router "or whatever it called" in my farm office which is basically in the center of my farmstead.  My office is inside of a cinderblock building and the signal will barley make it right outside of the building.  I know this because salespeople have to pull there truck up right outside the door to pick up my signal for there laptop.  I was wondering if there is an antenna of something that I can hook up to broadcast my signal all over the farm.  I would need about 250 feet in one direction to reach the house and shop and about 150 feet in the other direction to reach the barn.

It would really be nice to have the barn computer online, and I want to get a shop computer to look up parts and stuff.  Get tired of running back and forth from shop to office.

Thanks.