Review by GEORGE R WARBURTON
Heads up: There are no zombies in this movie.
Although I've heard of electromagnetic pulses overloading the grid (as a result of massive solar storms) and I knew (or at least believed) they occurred during atomic explosions; this was the first time I ever heard the term Radio Flash. Not going to challenge that. Nor am I going to spoil this fascinating post apocalyptic movie with a technicality. It is well worth watching; and it's an original.
Again: There are no zombies in this movie (in case that's what you're looking for).