The "_starter_" was not unlike the "radio" broadcasts of the Twentieth Century. It went out at a frequency of about 1,000 kilocycles, had an amperage of approximately zero, but a voltage of two billion. Properly amplified by the use of _inductostatic_ batteries (a development of the principle underlying the earth induction compass applied to the control of static) this current energized the _"A" ionomagnetic_ coils on the airships, large and sturdy affairs, which operated the _Attractoreflex Receivers_, which in turn "pulled in" the second broadcast power known as the "_pullee_," absorbing it from every direction, literally exhausting it from surrounding space. The "_pullee_" came in at about a half-billion volts, but in very heavy amperage, proportional to the capacity of the receiver, and on a long wave--at audio frequency in fact. About half of this power reception ultimately actuated the _repeller ray_ generators. The other half was used to energize the _"B" ionomagnetic_ coils, peculiarly wound affairs, whose magnetic fields constituted the only means of insulating and controlling the circuits of the three "powers." The repeller ray generators, operating on this current, and in conjunction with "twin synchronizers" in the power broadcast plant, developed two rhythmically variable ether-ground circuits of opposite polarity. In the "X" circuit, the negative was grounded along an ultraviolet beam from the ship's repeller-ray generator. The positive connection was through the ether to the "X synchronizer" in the power plant, whose opposite pole was grounded. The "Y" circuit travelled the same course, but in the opposite direction. The rhythmic variables of these two opposing circuits, as nearly as I can understand it, in heterodyning, created a powerful material "push" from the earth, up along the violet ray beam against the _rep_ ray generator and against the two synchronizers at the power plant. This push developed molecularly from the earth-mass-resultant to the generator; and at the same fractional distance from the _rep_ ray generator to the power plant. * * * * * The force exerted upward against the ship was, of course, highly concentrated, being confined to the path of the ultraviolet beam. Air or any material substance, coming within the indicated section of the beam, was thrown violently upward. The ships actually rode on columns of air thus forcefully up-thrown. Their "home berths" and "stations" were constructed with air pits beneath. When they rose from ordinary ground in open country, there was a vast upheaval of earth beneath their generators at the instant of take-off; this ceased as they got well above ground level. Equal pressure to the lifting power of the generator was exerted against the synchronizers at the power plant, but this force, not being concentrated directionally along an ultraviolet beam, involved a practical problem only at points relatively close to the synchronizers.