I think the sodium is the key, as well. The water may be a catalyst, increasing the surface area of the NaCl molecules exposed to the radio waves, allowing a separation of the salt molecule and consumption of the sodium. Any chlorine gas off-flow? Energy in vs energy out calculations? I am all for anything that will get us away from mid-east oil!
A salt molecule? Did you sleep through chemistry class or what?
Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam.