The Providence news. (Providence [R.I.]) 1891-1906, 1899-11-02
Communication Was Continued for a Dis.
iance Of Over Thirty Miles,
THE TESTS FOR INTERFERENCE.
Possible for an instrument Within Tho Radius Of
Transmission 10 Destroy tho Effectiveness Of
0hr instruments s-vaIus Of Syssm.


New York. Nov. 2.r-The U. s. s. New
York, flagship OF Rear Admiral Far
quhar, and the battleship Massachu-
setts returned last night TO the anchor
age off Thirty-fifth street, North river
after being employed for three days in
evolutions for the purpose of demon
strating the working of the Marconi
system of wireless telegraphy under
various practical conditions. The oper-
ations were under the direction of a
board of three naval officers, Lieuten-
ant Commander J.T Newton on the New
York, ] w Bliss with instruments at
Navesink, y. j., and Lieut.. Il. j. Hill
aboard the Massachusetts,.
Mr.. Marconi was handicapped by the
incomplete instruments which had been
brought to th,i United States simply for
the purpose of reporting the interna-
Iional yacht races and was unable TO
give the government board as thorough
demonstration of the capabilities of
the apparatus as he would have wished.
SATISFYING TESTS.
But the result OF the working of the
three sets of instruments employed in
the tests Of the past three days was TO
show the government board that there
is a practical utility in the system
which would be of inestimable value to
naval vessels during evolutions of any
kind and especially when on scouting
duty. The members of the government
board will be obliged to call attention
TO the fact that during these tests IL
was possible for any instrument located
within the circumscribed radius OF
transmission 10 destroy the effectiveness
of any other instruments at any time.
While the Massachusetts, for instance,
was telegraphing to the New York, the
operator at Navesink sent a message
at the same time and the result on the
receiving side of the New York's set
was a tumble OF undecipherable char
acters caused by the two sets OF cleo
tr!cal impulses reaching the instrument
at the same time. This was done de-
liberately. Mr.. Marconi said that he
could prevent this interference on the
part OF a third station. but that he
would not demonstrate IL during these
tests, because he had not yet secured
his patent for that feature.
MAN ovERBoARD.
a practical use of the wireless tele-
grapn that pleased all tie officers
aboard the New York occurred yester-
day. While the New York and Massa-
chusetts. the latter astern, were putting
out 10 sea, the MarCori operator on the
battleship called the haship up and
clicked out that there was man over
board. The message was taken to the
officers. who were clustered aft, trying
TO make out why the Massachusetts
was heaving to. The battleships life
boats were rapidly lowered, and were
soon pulling a race for the rescue of the
unlucky jackie. Signals were sent
aloft notifying the flagship what had
occurred, but during the 10 minutes oc-
cuped in displaying the message, Ad-
miral Farquhar had been in constant
communication with the Massachusetts
by wireless telegraph, and had learned
that the man oyerboard had caught the
life buoy thrown by a sailor and was,
therefore not in much danger. Admiral
Farquhar ordered the Massachusetts, TO
report when the man had been picked
up, and half an hour later while those
on deck were watching the return of
the port lifeboat through their glasses.
and wondering which boat had succeed
ed in getting him, the receiver in the
instrument room recorded that the
starhoard Iifeboat. which had been hid
had made the rescue and been hoisted
aboard.
DISTANCE TEST.
Beyond the simple te., of the ability
e-tAe instruments 10 transmit and re-
ceive messages, Une government BOARD S
program called for "a long distance
and interference tests On
MONDAY. the New York. lowering about
the SANDY Hook lightship and the Mas
steamed OFF east at about II
knots. Constant communication was
kept up between the two snlps, the in
struments working without a hitch un-
I'll the battleship had proceeded about
30 miles. Then the recording OF the i'm
pulses from the Massachusetts by the
receiver aboard the New York began
TO grow weaker. and at 80 miles became
Mr. Marconi expressed re-
gret at his inability to snow the Board
transmission at so miles, which would
have been possible with more prepara-
tion.
Five successful interferences were
made on that day by the Massachusetts
eetts. while the Navesink station was
sending TO the New York.
The wind kicked such sea ON
that both ships came inside
and anchored eie miles apart. The
two ships. however were I'm communal
cation throughout the day and mes
sages were exchanged every few min
utes.
The three stations continued the dem
yesterday. and there VIII he
more work today when the Instruments
on the New York will he taken to sea
on a torpedo boat This will test the
ability of the aDnaratus 10 stand tho
more violent rolling and lurchlng OF a
smaller vessel.
For Over Fif'y Years
MRS WTNSIOW'S SOOTHING.