I want to connect 3 seperate buildings in a rural setting to share some sensor readings, and possibly provide some control between them. Maximum distance would be 1.25 miles. There is telephone at one building, but I don't want to install it at the other 2. I would prefer my own private digital link.
What are my options, buried cable or fibre optic, wireless? Cost is a factor also as I don't want to remortgage the farm to do it.