The Hartford republican. (Hartford, Ky.) 18??-1926, 1914-08-28

ahead of the ship, or only a few de
grees off the port or starboard bow
the indicator will show this fact
and with this knowledge the navi
eating officer of the ship may al.
ter his course to avoid collision.
| Thus, If a ship equipped with the
finder, is approaching another equip
ped with an ordinary wireless trans.
hitting instrument, the captain OF
the first ship. by getting into COM
munication with the other vessel,
can point his finger at his neighbor
in the sea as accurately as IL he
could see the other ship. Fogs, winds
and waves will not affect the ac-
curacy of the finder.
In addition to giving the direction
of another station in relation to
his own course, the finder will also
give wireless operator an accurate
idea Of the distance between him
and the other station. The radius of
miles, so that the extreme distance
between two points in communica-
tion thru finder is fixed. But with
in this fifty-mile radius an operator
can tell by the strength of the mes
sage received thru the finder the
distance between him and the Sec
ond station. AS this distance is les
sened the strength of the message
forms a. more reliable basis of Judge
ment, so that the nearer two ships
are together the more accurately
can an operator determine their dis
lance apart.
Then the Observation-Disclosures
system. which is the formal name of
the.new device, has many other valu-
able applications for navigators. BY
it's use the position Of a ship in de-
grees of longitude and latitude may
be determined IL the ship can get
into communication with two fixed
known.
| FOi CAdhPAC, II q ohiP was dP
preaching Nantucket communica-
ton might be established with the
wireless station there, and with the
one on Nantucket lightship. The di-
rection of the message from the
island and the direction of that from
the hghtship in relation to the ships
course would be indicated by the
stations on the island and the light
ship is a matter of chart record.
With the knowledge of this distance
and the direction of the two mes
sages, and the captain of the ship
at sea could form a triangle from
which he could figure the position
of his own ship.
Another practical use for the
finder would be in case one ship
received a distress signal from an
other. II they were not too far apart.
With ordinary wireless apparatus it
lis necessary for the ship in distress
to give another ship its position in
degrees of longitude and latitude,
and the navigating officer of the
ship summoned to the rescue must
steer a straight course to the vessel
needing help. All Of this is unne-
cessary with the direction finder.
Even tho the position of neither ves-
sci is known, an 8. o. s. flash re-
ceived through the finder would en-
able the navigating officer of the res
cue ship to head directly for the
ship sending the signal.
The finder will be of great value
to a ship entering harbor or pass
ing point thru fog. When light
houses and land can be sen nothing
else is necessary. but when they can
not be seen it is of very material va
lue to a navigation officer to know
his bearing in relation to them, and
the finder will give him this knowl-
edge
The parts of the finder that differ
from those of an ordinary wireless
receiving station are the serial and
finder box. Instead of being COM
posed of several straight parallel
wires, the serial of the Marconi-Bel-
ini-Tosi system consists of two large
wire triangles. On top of the finder
box. which sits in front of the wire
less operator. are two switches. each
of which is connected with one of
the triangles.
Because of their arrangement the
two triangles cannot receive a mes
sage with the same strength at the
same time. II one of them receives
a message full strength, the other
does not receive it at all, and IL
both receive the message is always
stronger over one than the other.
The position of the sending station
in relation to the triangles is de-
termined by the strength Of the
message as II is received over each