DeAquino, the machine

[PLAYSWITHMACHINES]

The machine (or apparatus is fairly straightforward.
From the AAG article;

The De Aquino theory of ELF-gravitational shielding is based on a paper called "Aristotle was Right" in which the authors, physicists John F. Donoghue and Barry R. Holstein claim that inertial and gravitational mass are only equivalent in an environment where the atoms composing the mass have no energy from surrounding radiation. In other words, only in an environment of absolute 0 degrees in temperature are the inertial and gravitational mass of an object equivalent.
De Aquino took their theory and generalized it - while "Aristotle was Right" only covered thermal radiation, De Aquino postulated that this theory would also apply to the larger-case example of any type of absorbed radiation that by the mass. De Aquino also showed that the effect of absorbed energy caused a decrease in mass, which is important because it means that if any object absorbs radiation it loses gravitational mass – in other words, it weighs less.
The physics equations that De Aquino created show that energy is absorbed better by materials with a very high magnetic permeability, which is why De Aquino's System-H experimental design uses 99.99% pure iron. That is also the expensive part, because that is higher than pharmaceutical grade iron, and during my research I was quoted $4000 for it by the only company I could find that manufactures it -- ESPI chemical.

Not only are materials with a very-high magnetic permeability required, but the physics equations also show a negative-dependency between frequency and gravitational-mass -- i.e.: the lower the frequency, the better it is supposed to work.
ELF-Antigravity: Jean-Louis Naudin's JLN-Labs website provides excellent coverage of De Aquino's ELF-Antigravity technology.
Generally speaking, the physics community looks at this idea rather strangely, because typically speaking higher-frequency wavelengths are considered to impart energy better, but in this case the assumption is that given a low enough frequency and high-enough permeability of the material, each "incoming graviton" will be met by energy that blocks it from entering the mass.

Everything changed in 2001 -- De Aquino, who had once been very active in publishing on the Internet, corresponding with Steve Burns in developing antenna designs for his experiment, and speaking with interested persons via email, went silent. The last publicly available correspondence involved with his active participation is the publication of the experimental results of the System-H experiment. He claimed that the device generated what can be basically termed "Antigravity", or "Negative Gravitational Mass" of approximately 220 gross pounds. The experimental apparatus is supposed to have weighed approximately 100 pounds due to the weight of the iron-ball antenna, which means that his experiment, which used a torsion balance to measure the weight of the ball, should have in fact moved into a negative weight range of approximately 120 pounds.

I'll try & get some links in there soon, seem to have lost them in here, he he....