How to modify the power of wireless router with real hardware to make the coverage reach about 2 kilometers (city), or modify the antenna with super strength. Don't talk to ...
Rent a base station from a telecom company, the kind they put in the car. It is estimated that the coverage is less than 2 kilometers. If it doesn't work, rent a fixed base station. As long as the money is in place, 2 kilometers should be enough, then rent more base stations and then rent satellites. The cost may be a bit high, but it can be achieved without blind spots.