The sun. [volume] (New York [N.Y.]) 1833-1916, 1915-09-30
Voices Plainly Heard From
New York to Mare Isl
and. San Francisco.
LAND WIRE CAN BE
EASILY CONNECTED
Invention Opens Up Posi-
bility of Talking With
Ships at Sea.

''HI pN Nt ADtu.
new worlds record for wireless
te,eph ny was established yesterday
when speech was successfully trans
mitted from the United States navy
wireless station at Arlington, Va, to
the Mare Island Navy Yard. near San
Francisco. n distance of about $500
miles.
The experiments were conducted BY
the navy scientists assisted by experts
from the commercial wire companies
They open up vast possibilities for the
navy in case of war besides being
Of great commercial value
Theodore y. Vail. president OF the
American Telephone and Telegraph Com
pany, talking from the Offices OF the
mpany Mt Is Dey street yeS, arday
held a telephone conversation with Mare
Island which was transmitted across the
continent by wireless.
Mr.. Wallis voice WIS carried to tho
wireless station az Arlington. Va, by
land wire. and from there transmitted
direct by wireless tn Mare Island. Vncre
~
enginecr of the telephone company.
At l2:lS o'clock New York time the
G cennection was secured. Mr. Vail picked
UP a regular Bell transmtter and spoke
INTO it,
"Hello. Carty. This is Mr.. Vail"
Reply Comes Clearly.
Mr.. Carty's reply returned almost in
simultaneously over the wire.
This Is fine THIS is wonderful"
At the same time listeners at naval
stations at San Diego. Cal. and Panama
caught Mr.. Wallis words. and their cor
roboration of the success of the expert
ment was wired later. Following Mr..
Vail, Union n. Bethel senior vice-presi-
dent of the company John /. Water
bury, "A director, and Bancroft Gherardi.
engineer Of plant, talked across the 2,ooo
mile gap and each in turn was heard
as plainly as the president Ex-senator
Murray Crane of Massachusetts was
present at the trial.
Yesterdays results were the culmlna-
tion of several months OF experimental
ton by naval and company engineers.
Last evening newspaper men IN the
Offices of the American Telephone Com
pany here congratulated and questioned
Mr.. Carly in the offices In San Fran
cisco on his development over the trans
continental wire.
"It is hard to say precisely" he said
over the telephone. his voice coming as
clearly over the $500 miles of wire
as IL il were in the same building. what
will he the commercial value OF the de-
velopment. We are going INTO thtt
now with the view of finding out. We
are satisfied that the number OF peo-
pie"
Here the connection was broken off.
Hold on" called "A new voice, Mr.
Carty'll be back IN second. rms is
Pittsburg Hello. Salt Lake.
Again the connection was broken OF.
Then the voice was heard again.
Hello, Mr.. Carly. you were cut OF
by Salt Lake by mistake. Here they
are"
I'VE are satisfied continued Mr..
Carty. that the number OF messages
that can be transmitted by the new
method in given zone VIII be tar
fewer than those possible over the wire,
or even the wireless telegraph. Where
these are numbered by the billion, Wlre-
lass telephone messages may be only
sent by the hundreds The wireless tele-
phone will never be relied upon to do
The work of the wire. Ii will be chiefly
useful in extending phone communca-
tion 10 out of the way places-deserts.
great heights, and on the sea.
May Talk to SHIPS.
81 believe that eventually we VIII De
able to talk to ships. The trouble caused
NV the so-called static at sea is very
great, especially In the summer, and II
must first be studied and overcome.
"It is impossible to predict when the
apparatus will first be ready for COM
mercial use In such experiments we
must first demonstrate as we have done
to-day the bare possibility OF the thing.
Then we must sit down and work IL out.
Remember, however, that the results
when I heard Mr.. Walls voice across
tho continent to-day were great ueal
better than those secured ny Mr' beli
when he tried his early telephone AT
few feet. Remember also that the dini-
culties are far greater TO overcome
"Secrecy will be no more posslole
than with wireless telegraph. Any free
instrument within range which can at
tupa itself TO the sending instrument can
listen to messages. just as san pleso
and Panama listened 10 the conversation
to-day" -
"Vill IL be possible to talk over
wire. then a gap of wireless, ana then u
wire at the other end MI carry was
asked by THE Sun reporter
"Oh yes. he replied, Il might as well
have sat here in the San Francisco or
fees To-day and received the message by
wire from Mare Island. You VIII, Tor
instance. be able to call London from
YOUR New York office and be connected
with your London correspondent who
will sit in his office at his regular wire
there.
1.-THE greatest distance traversed by
the wireless phone previously has been
from Arlington to Panama, distance
OF about 2,100 miles. This has been
successfully accomplished by naval off-
c,als at informal trials, Lieut. Cram
shaw receiving the messages and
cabling them back.
II Is the intention of the Navy De-
partment to pursue the experiments
vigorously, particularly with view TO
csyeloping wireless telephony for use
i'm it's service as soon as practicable.
IL IN probable that experimental work
will he carried on extensively at sea.
Tntil yesterday the trials wer, kept
close secret and nothing can he said
vet about the nature Of the Instruments,
Mr. Vail sent last evening the follow
ing telegram To Secretary Daniels
Personally and as president Of the