"
"Well, let's connect up, anyway, and see if we can hear anything,"
said Joe. "There's no use waiting until Jimmy gets back. It won't
take him a long while, and likely enough he'll be back before we
raise any signals, anyway."
"Well, pull up your chairs, and we'll plug in," said Bob, adjusting
the ear phones over his head.
"I saw in this morning's paper that the Newark broadcasting station
was going to send out an orchestra concert this afternoon, and if
our set is any good we ought to hear part of it."
They all adjusted their ear phones and then drew up chairs and
inserted the plugs in the spring sockets designed for their reception.
They had connected four pairs of these sockets in parallel, so that
all four head sets could be used at once.
Now was the crucial moment, and the boys waited breathlessly for
some sound to come out of the air to them.
CHAPTER XVI
SWEETS OF VICTORY
Bob set one of the sliders about at the middle of the tuning coil,
and set the other--the one connected to the leading-in wire--about
opposite. Then he adjusted the sharp pointed wire on the detector
until the point was just touching the crystal. Still there was no
sound in the ear phones, and the boys looked at one another in bitter
disappointment. Bob moved the antenna slider slowly along the tuning
coil, and suddenly, faint, but very clear, the boys heard the opening
chords of an overture played by a famous orchestra nearly a hundred
miles away! Sweet and resonant the distant music rose and fell,
growing in tone and volume as Bob manipulated the contacts along the
coil.
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