I don't think the concept is completely wrong. Tesla talked about "non-hertzian" waves..
If his magnifying transmitter device used hertzian waves he would not have gotten very much range at all.
I know of another inventor who used a similar concept wihile using water as the medium. His name was Stanley Meyer and he claimed he used resonance with the molecules themselves which added to the goal of breaking apart the bonds to produce hydrogen and oxygen. It required high voltage and very low amperage just as Tesla's device. Whether this is scalar motion isn't definitive, but both cases use a mostly unknown transfer energy. His device ran cold and operated completely different than traditional electrolysis. You may be skeptical but Meyer did receive patents and demonstrated the device. His lectures on youtube, especially the one in New Zealand, are very informative on the process..