Hi FuzzyTomCat,
That's a lot of interesting deducation in your post above, kudos for that.
I was right when I posted the explanation about that photo with Einstein, Steinmetz and alleged Tesla. I knew I read something about it and that it was related to RCA. Turns out that building was the first RCA Trans-Atlantic broadcasting station, in New Brunswick NJ.
As far as Tesla being there, I gather at that time Marconi was given the priorty in the radio discovery and patents (thanks to JPM pulling some strings) and Tesla was no too happy about it. Tesla would not be there, especially with Einstein, who's Theory of Relativity he openely opposed, among other things. They simply did not see eye to eye.
Plus the whole RCA thing was Marconi/JPM deal so it would only be adding insult to the injury for Tesla. He saw trough the double-play by Marconi and J.P.Morgan and refused to help them. Steinmetz ended up setting up their generators based on Tesla's patents.
Here's a bit about mistaken identity of the person in that photo being Tesla:
I'm still trying to understand this 18-23KHz range and how it could be utilized with modern tech.
Rather than using vacuum tubes and long stretches of wire, couldn't we excite plasma in an evacuated tube, and amplitude modulate some signal at 18-23KHz range to start the process? But then what, what should happen next, how does one collect the Cosmic Rays that would be attracted to this emission?