I am new to Raspberry and now that I got the first touch of it, I would like to know if there is a way to use it for a more complex problem.
I have location A and location B connected with two wire cable. The distance between the two locations is aproximately 2km. Is there a way to use this cable and two Raspberry units to use them for communication? Did anyone try to do something similar. Right now this cables are used for communication via "Field phone". It would also be hard to replace this wire with any other wire.
I think this could be a great project to start using Raspberry for real, if it's even possible
For any suggestion about how to find the solution, I would be more then thankful.