The St. Louis Republic., 1904-09-11


which sent a message overland 10 Ch'caf
Wireless communication between thica-
20 and St Louis has hern established The
feat was accomplished yesterday by the
American De Forest Wireless Telegraph
Company. which transmitted messages
from the giant tower on the World. Fa.T
grounds 10 the lax efront in Chicago The
ST Louis Republic has arranged TO take
the De Forest overland service. which
shortly will be established throughout the
United States
All day. the operators gieefrliy stood at
the transrlitters in St Louis and shot
message after message through the air
ard whatever else came in contact with
the currents. all of which were answered
correctly and promptly. although the STA
tions in communication are almost three
hundred miles apart
Abraham White. president of the com
pany. did no, leave the tower all day: and
at the completion OF Yesterdays expert
rnents he declared that in a few months
a message would be sent from the main
Pacific station at Seattle. Wash. TO the
Philippines. unrelayed.
This viii mean. IL II is accomplished. the
abandonment Of the cablue as a means ot
communication. and the probable loss Of
millions Of dollars Invested in this mole
Of co,nmunIca ton Wireless telegraphy is
supported by nature. the messages being
carried by the abundance rf ether IN the
atmosphere.
The messages sent from St Lou = To CHI
caeo and return Is the greatest fea- We;
accomplished in wireless Communication
INTERRUPTION IMPOSSIBLE.
Besides demonstrating tha; messages
could be sent for long distarccs overland
yesterday. Il wac also demonstrated that
information being sent from a station 20
a particular point cannot BE- taken at an
other pOin; unless the key Is given from
the sending station.
No u,eseages were sent from 81. Louis
yesterday except those 20 Chicago. al
though attempts were being made at
Springfield. Ill. and various other points
to stch messages which were continually
leacinE the tower AT the Fair grounds.
Ar aimost perfect system of syntonizing
has been invented by Lee De Forest. the
inventor of the transmitting apparatus.
which requires that the sending and re-
ceiving stations be perfectly attuned be-
fore nitelligibIe information can be trans
mittei from one Instrument TO another.
This is accomplished by elirnina ting
static. Electrical and atmosphere disturb
ances. which are continually attacking
the currents shot from the transmitter.
Wehn two Instruments become perfectly
attuned. all elements become nuilified.
Their attacks are inpotent. and tine sound
flies for Its affinity which. it is claimed. it
he stfs
Is strong enough to project it the re-
Quired distance.
In its fight all substance il as powerless
as the afr TO esst its progress. Tall. steel
ribbed buildings. il ha. been proven. are
as nothing in the path Of the electrical
currents 1t Is not known what course the
currents take. whether they bob over or
execute flank movements To evade obsiruc-
tions. but it gets to tie receiving station.
nevertheless. just as quickly as II it were
being Gent over a broad expanse Of prairie
land
Walls Of solid steel. 4; Is claimed. csnno,
bar a message from the station perfectly
attuned.
President White last night offered to set
zip station in any steel vault in St LOUIS.
In order too rove tnat all substance Is
poweriess TO stop the receipt Of message.
The Morse system Of teiegraphy is used to
take all messages
Preparation 10 make the Chicago-St
Louis demonstration was begun several
days ago. The receiving station was set
up nsChicago near the Auditorium Hotel
FIRST MESSAGE
The test was made after the receipt Of
the following wire:
No. 5ls4 wsshington Avenue. St LOu:s: Thi.
Is the mos; rnon'en,9us day IN The history OF
clearly and distinctly. This e giant sirid.
s.nee cannot ss,asy be ests.:n.d. feleE,sph
ier send pig a call saiurdsy. 70 10 a. m.
but from to u m send messages. ! have
onstrstion on Monday morning Arrange 10
.e s..sse' sm y pss.s ps,a: H.ygr wesi bss
w l.l fsi tfs.. ss to gfPri sa'R sRdss A k @
70. .aceess Of which Is by to-dsys
work assured With mutual s@eesfa'ggis..sas; @ "a gh..
The trial messages worked beautifully.
IT is claimed. and the following message
was finally sent from 81. Louis and re-
ceived at Chicago. 1t read:
American DsForext Wireless Teiesraph Coni-
nam. y Sos;s nsr.e sde Ia. s Gssas2 1d
Graham Bell are in<epersble from the tels-
IS ihst Of Lee DeFore., linked now IN Der
petui;y with the history and development OF
Forest system is attaining under your .briltan,
Genius. unequaIed ability IN your art, sorcefui
energies and unsir1nG efforts Il more than era,-
flying 10 and you- associat.s generally are
10 Be congratulated upon having the god for
tune snd the opportunity to be Identified with
such splendid project
Your .ueeessfui work Is recalled nov NOR.
you nave saceeeded. nstabiy IN The wsr ma.
neuyers of Isc-isGs: the navy tests the Great
LAKES. service on 6r Thofna. Lipton's yacht
Erin the international yacht races. the sp.eri-
did work IN Great Britain. under the auspices
of the British Pos, -oshce Department: N.
masn.Acent work Of the peForpe, system N
The Ear East IN reporting. by wireless teies-
raphy the Russo-Jepen Was news from the |
lftracfed Nofid.Nide attention: the uninter-