"Tesla’s work on the tower explored electrical transmission using radio frequency resonance to create electrical energy"
https://teslasciencecenter.org/teslas-wireless-power/
"The tuned circuits were resonant with one or more earth or cosmic frequencies"
https://www.apparentlyapparel.com/news/nikola-teslas-black-magic-wireless-touring-car
American Genius: Alternating current scene (Edison vs. Tesla)
"tune in the right frequency and got 240 volts delivered through the air"
http://waterpoweredcar.com/teslascar.html
We've Found The Magic Frequency
(This Will Revolutionize Our Future)
"the car antenna and and the radio wave receiver/amplifier. By pushing them into the box containing the radio wave receiver/amplifier the connection was completed allowing the radio waves that were received from the air by the antenna to flow through the receiver/amplifier to the electric motor."
https://www.apparentlyapparel.com/news/nikola-teslas-wireless-electric-automobile-explained
"The "energy receiver" (gravitational energy converter) had been built by Tesla himself. The dimensions of the converter housing were approximately 60 x 25 x 15cm. It was installed in front of the dashboard. Among other things, the converter contained 12 vacuum tubes, of which three were of the 70-L-7 type. A heavy antenna approximately 1.8 meters long, came out of the converter. This antenna apparently had the same function as that on the Moray converter (see chapter on Radiant Energy)."
http://waterpoweredcar.com/teslascar.html