New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1902-06-06
MARCONIS NEW STATION.
A DESCRIPTION OF THE BUILDING AND
APPARATUS AT CAPE COD.

When Mr.. Marconi next visits the United STATES
In about two or three weeks, he hopes TO demon
strate the possibility of transooeanic wireless
| teiegraphy. and perhaps put that art on a com
mercal basis The site of the American station
first emploved In that service is South Welneet'
on Cane Cod. Its equipment has mace raPd
progress within the last few weeks ana u % Pio
able that it will be completed by June q
The station is on bluff about hunoreo Ieee
above sea level and Is nearly twenty-nne hundfeu
miles from Poldhu in Cornwall, from winch point
communication with Newfoundland was acteihp'ep
last December.
Four square wooden towers have been erected az
this point. Each measures Is feet across az ei
base is from to Il feet across at the top anu
attains a height of 25 feet from the earth' i"e
towers stand at the corners OF q s9thie' 80
sides are 30 feet long. Each one Is cross 't
with steel wire rope. such as is used IN rssihs
yacht Then all four are connected win co.
other bv diagonal stays. Finally, to renoer 'Ie
structure still more rigid and w1ndproo1' s'
cables up over the tops OF each pl. -
towers on all sides, and secured to ahehoiase' -
the earth. So much for the architectural lea
of the station Now fer the electrical eaoipihep
From each of the four horizontal bridges "hich
connect the tops of the lowers are sospefioeu -
copper cables. The cables are composed VI -
strands, an eighth of an inch In diameter, So So,
twisted together. Outwardly these caoles roN
uL sing1e wires at short distance but in reality
there are three hundred and fifty wires on SUE
or fourteen hundred in ALL Perhaps the Ie 80
for using many fine strands instead OF d &c"
large rods is to secure larger amount OF spfi"o
for given amount of copper. 1t viii thus De seen
that the solitary vertical wire of the Original
Marconi experiments has now been enornlous,s
multiplied Since the length of Hertz "aFe -
four times the length of the veroeai "he -
antenna waves not far from $50 feet tor So
of a nile) long should be developed at the N"pe
Cod station This corresponds to a frequency Oh
about 1,109,G90 a second.
The Atty cables of each of the four groups con-
verge a little they go downward anu aio ~
cline slightly toward the centre of the quaorupieH
ediice The lower ends. therefore. are afrahsea
along the sides of square much sniaiier ''-'
that formed by their supports at the top
Tt is expected that Mr.. Marconi will retain Inc
now famous coherer as his receiving instrument
ar south wellfeet This device is introduced be-
tween a small local battery and the 1aiiiiiai
sounder which ticks off messages IN the olo-lasIi
toned It is glass tube a6ont as Sr .srge which
terminate in nickel plugs at the middle SILVER ~,
mas paFay Ky ~ eog g ser bridge
it completely. 4 slight modification has been maae
In dhs @ 81 ana eciency Formerly
the faces of the nickel plugs on opposite sid were
parallel They are now inclined that the space
Is Wedge 5espea ff fsctates nicer adjustment
to the varying needs of the WORK than was PoSSDie
In the transmitting apparatus transforn;ers VII
be for OR, the an an men
long, but the spark itself will be Wldensa, or
thickened greatly by the ShoftneSS OF
It will be produced between globuar terminals.
two inches in diameter An alternating current
generated by a forty horsepower dynamo viii do
the work The voltage VIII be raised by the trans
generated. to 10000 ,Condensers and other cleo
frical appliances will increase this still further
Thus a voltage of from 5000 to 10000 viii be Sc
cured The dynamo will be driven by two twenty
two horsepower gasolene engines run In cornpina-
ton.
At the Poldhu station it originally intended
to have about forty horsepower behind the trans
mitters. but this amount not available at the
time OF the earlier tests. Mr.. Marconi has been
quoted saying that In the course of mis- present
stay in England he would 'strengthen' his equip
rnent at Podhu. Probably what he meant was
that he would increase it to the amount which he
has contemplated from the first. At the Cornwall
station there twenty poles arranged in circu-
fashion, and the vertical wires had length Of
about two hundred and ten feet.