â€œMy first observations positively terrified me as there was present in them something mysterious, not to say supernatural, and I was alone in my laboratory at night.â€
â€” Nikola Tesla, 1901
â€œThe sounds I am listening to every night at first appear to be human voices conversing back and forth in a language I cannot understand. I find it difficult to imagine that I am actually hearing real voices from people not of this planet. There must be a more simple explanation that has so far eluded me.â€
â€” Nikola Tesla, 1918
Build your own and have fun with it!