Second Law of Thermodynamics.
You cannot split water into hydrogen and oxygen, then turn that back into water, without putting more energy into the system in the first reaction than you get out of the second. It doesn't matter if the energy put in through the first reaction comes from electricity, radio waves, or magical fairy flatulance. If you build a generator that runs off of "burning" salt water and try to power the radio transmitter with the generator, it's going to steadily lose energy, until the system shuts down. It's just like every other perpetual motion machine for which USPTO rightfully and automatically denies patents.
That news report is what happens when media companies decide that proper, educated science correspondents are expendable in rough economic times. It's kind of infuriating, really.