Even then the project of spanning the Atlantic was in his mind.

On the coast of Cornwall, near Penzance, England, Marconi erected a
great station. A forest of tall poles were set up, and from the wires
strung from one to the other hung a whole group of wires which were in
turn connected to the transmitting apparatus. From a little distance the
station looked for all the world like ships' masts that had been taken
out and ranged in a circle round the low buildings. This was the station
of Poldhu, from which Marconi planned to send vibrations in the ether
that would reach clear across to St. Johns, Newfoundland, on the other
side of the Atlantic--more than two thousand miles away. A power-driven
dynamo took the place of the more feeble batteries at Poldhu, converters
to increase the power displaced the induction coil, and many
sending-wires, or antennae, were used instead of one.

On Signal Hill, at St. Johns, Newfoundland--a bold bluff overlooking the
sea--a group of men worked for several days, first in the little stone
house at the brink of the bluff, setting up some electric apparatus; and
later, on the flat ground nearby, the same men were very busy flying a
great kite and raising a balloon. There was no doubt about the
earnestness of these men: they were not raising that kite for fun. They
worked with care and yet with an eagerness that no boy ever displays
when setting his home-made or store flyer to the breeze. They had hard
luck: time and time again the wind or the rain, or else the fog, baffled
them, but a quiet young fellow with a determined, thoughtful face urged
them on, tugged at the cord, or held the kite while the others ran with
the line. Whether Marconi stood to one side and directed or took hold
with his men, there was no doubt who was master. At last the kite was
flying gallantly, high overhead in the blue. From the sagging
kite-string hung a wire that ran into the low stone house.