Experimental Effort:
Gravitronic Tuner setup.
Power on measurements. Amber is low impedance net near DUT drive node. Blue is electrically isolated gravity shield. Antenna efficiency is ~55% at 0.62 Hz. Equates to 540Wrms electromagnetic illumination per square meter. Spreadsheet calculates a 6.5% weight reduction for the parms.
Power off baseline for above measurements.
Spreadsheet for above is below.