Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1902-01-17
ON HIS TESTS
The Great Inventor Says He Can
Prevent Stealing Of Wire
less Messages.
Is Confident He Will Make Trans.
Atlantic Telegraphy a Prac.
tical Success.
Talks Of His Invention and Rapid
Progress Toward Its Per-
lection.

lection.
! New York, Jan. 17-Guglielmo Mar
conf, the inventor of wireless leleg-
raphy, was the geust of honor at the an
nual dinner of the American Institute
of Electrical Engineering in the Aston
gallery of the Waldorf Astoria. T. C.
| Martin was the POSTMASTER, and when
he introduced Mr. Marconi the 800
guests arose and gave the inventor
| three hearty cheers. Mr.. Marconi ex-
pressed thanks and gratitude for the re-
ception, and said that he felt highly
honored to be entertained by such an
| important organization. He continued:
| 81 think it is admitted and we'll known
| that America stands first In electrical
engineering. I feel highly honored at
being entertained by SO many distin-
gushed men whose names are house
hold words thruout the civilized world.
I have been asked to give a brief de-
scription of what my system has accom-
plished, especially with reference to It's
use on ships at sea. Wireless telegraphy
| is perhaps now attracting more atten-
ton than any other problem. It's prog
ress has not been slow. Five years ago
the system with which my name is iden-
titled was working over a distance or
about two miles, and its range has rap
| idly increased. About two months ago
| ii was possible to communicate over
distance of 900 miles. A certain COM
mercial application Of the system has
| already been reached, chiefly In Eng
| land.
TT may Interest you to know that at
present over seventy ships carry perma-
nent installations of wireless telegraphy.
| Thirty seven of these belong to the
British government, twelve to the Ital-
| ian government and the remainder are
| on the great trans Atlantic liners. Over
| twenty land stations are equipped with
| installations in Great Britain and on the
continent, and several are established
here which work in connection with
ships. and several signal stations are
now being equipped. / regret that 1t is
not possible for me to give you any sci
entific details, but will reply to some
questions constantly asked as to the
practical working of the system.
1T is the general belief that when a
message is being transmitted, or has
once been Entrusted to space, any one
with receiver would be able to take 1t
up and get the message. This. would
mean that a mans business would be
public porperty once it WAS released.
This would be very awkward stua-
ton, especially to men who sent stock
quotations. This objection has in a large
measure been overcome. BY modifica-
tons of the original system 1t has been
found possible go to adjust one trans
mitter to one receiver as to make 1t
practically impossible, or at least very
difficult for any one not acquainted
with the particular tone of the wave to
decipher the message. This system is
not at present in use on ships at sea. 1t
is deemed to he OF utility that one ship
shall be able to communicate with any
other ship, so that one vessel may COM
municate with another If in distress.
Across land. however, the adjusted sys-
TEN must be used"
Mr.. Marconi read from a periodical an
address written by Professor A. Elem
ing, of the London University, which ex-
I'ained the use of the attuned system.
showing that it has been possible to
rake wireless telegraph stations inde-
pendent of each other. Continuing, the
inventor said:
I'm my experiments In England I
found that only enough energy to light
small incandescent lamp was neces-
sary to send message 200 miles. With
the intention of establishing the fact
|, y,,ac ,iyh ha ha
ocean, two powerful installations We're
set up, one in Cornwall and another on
Cape Cod. A hurricane demolished the
to be postponed. then established
station at Newfoundland. which is dis
tance of 1000 miles from the station at
Pelhu. Kites and balloons We're en-
ployed with elevated wires. They gave
great deal of trouble, as, owing to the
tempestuous weather, it was found al
most impossible to raise the kites and
balloons.
"On Dec. IL and IS we had great deal
OF satisfaction in receiving the signals
at the right time and at prearranged
speed. (Applause.) Experiments would
have been continued in Newfoundland
with more permanent installation, as
at once recognized the necessity OF MAX
ing the station permanent one. This
permanent installation would have been
set up had / not discovered the fact that
the Anglo American Telegraph Com
pany claims to have monopoly on all
telegraphic communication in that coun-
try, not only on the cable and ordinary
te.egraphc communication, but 1t claims
to have monopoly on preventing any
one from trying experiments which are
connected with biography in that colo
Ky, and in the same way claims a mo-
ropoly on the air and the sea. Laugh
teri
These attacks rather encouraged my
experiments than prevented them. The
manager of the Anglo American Com
pany in Newfoundland told me that my
and that 10000 words We're sent over the
cable in three days during my presence
there. Experiments become almost i'm
possible when you have to face injunc-
tons and threatened injurctions and a
highly worded monopoly. Under the cir
cumstanees / crossed over to a country
not far from Newfoundland, about nine
ty miles distant to Nova Scotia, and I
think a permanent station will be es-
tablished there, and the one at Cape Cod
will be repaired. l believe it will be pos
sible to send several messages across
the ocean at the same time and in a
commercial and useful manner. / am