High voltage pulses from an induction coil "(T)" were applied between the two sides of the antenna, and sparks across the spark gap excited oscillating standing waves of current in the antenna, which radiated the energy as radio waves.
High voltage pulses from an induction coil "(T)" were applied between the two sides of the antenna. High voltage pulses from an induction coil "(T)" sparks across the spark gap. This spark gap is excited oscillating standing waves of current in the antenna. The antenna radiated the energy as radio waves.