Thank you for sharing this work! This confirms a lot of what I have studied regarding the Wardenclyffe Tower. I do have a few questions if you can answer....

Does the excited secondary circuit need to be a harmonic of the return circuit? Some of his drawings show the legs of the return circuit as coils offering more induction before the ground connection...

Since you are using a spark gap, you are primarily using damped wave oscillation, correct? Have you used a continuous wave (CW) to excite any systems you've made?

I ask because I built a small - 250 watt - CW 50khz TMT system and would like to replicate these experiments if possible. CW oscillation usually comes with lower power inputs and lower voltage outputs....My system is CW and I think im going to try building a return circuit and receiving systems on the same frequency as the return circuit and measure received power. I can also build a HV damped wave driver if needed. Thanks for any insights!