[cozzyd]

Shortwave radio depends on ionospheric conditions, which can be manipulated via nuclear blasts, ionospheric heating facilities, solar activity, and volcanos. Instead you must modulate a neutrino beam from international waters using a nuclear submarine for power. Fire any customers not willing to invest in kiloton-scale neutrino detectors.

[hot_gril]

Or just use the regular Internet but conquer the entire world first to make sure nobody can tell you what to do with it.