nThe energy of Tesla's steam
driven Westinghouse 200 kW alternator was to be channeled into an extensive
underground radial
structure of iron pipe installed 120 feet beneath the tower's base.
nThis was to be accomplished
by superposing a low frequency baseband signal on the higher frequency signal coursing through the transmitter's
helical resonator.
nThe low frequency current in
the presence of an enveloping corona-induced plasma of free charge carriers would have
"pumped"
the earth's charge.
nIt is believed the resulting
ground current and its associated wave complex would have allowed the propagation of
wireless transmissions
to any distance on the earth's surface with as little as 5% loss due to
radiation.