New-York tribune., 1922-02-26

Atlantic radio telephone communica-
tion when it is finally established, be-
cause each of the terminal wireless
telephone stations will in reality be
ccme telephone exchanges. capable Of
making several rans-Atlantic com
munications simultaneously.
Different Wave Lengths
This has been achieved by the de
velopment of system whereby several
Carrier" waves can be radated from
one aerial all at the same time 1t is
done with continuous waves Of differ
ent wave lengths, and at the receiving
itation suitable receiving apparatus is
tuned up to the various carrier waves
and then connected with the existing
land line telephone circuits
You Will probably say that this IS
very interesting and extremely wonder
ful, but what is to prevent any one
from listening in on the conversations
az any other wireless telephone sta
tion, and in that manner obtaining
very valuable information that is not
intended for them?
There is no question that the tcle-
/ phone conversations that will be made
across the Atlantic as soon as the
facilities are placed into operation
Will be extremely important in their
nature, because of the first cost of
service, and consequently it will be
necessary to guard them in some way.
This question has been foremost in
the minds Of the engineers who have
engaged in developing the possibilities
OF trans oceanic radio phone communi-
cation and they have evolved system
whereby it will be impossible for any
other wireless station to listen in. or
in other words, to tap the lines"
This has been achieved by the de-
velopment OF special apparatus which
deliberately distorts the speech before
1t Is transmitted across the ether ways
Of the ocean. The subscriber speaking
over the system naturally enunciates
clearly enough, but the apparatus at
tached to the line at the radio CEN
tral takes his words and distorts them
in peculiar manner. so that they are
uninteligiblc
At the receiving radio central sta
ton there is other apparatus which
responds to this particular type of dis
tortion and straightens it out before
the transfer to the land line system
is made. In other words, the new an
paratus merely acts as an interpreter.
first by putting the words into what
might be called another language, and
then finally translating them back into
the original language used.
To Talk Around World
Such IN a general way is the man
ner in which the system of trans
oceanic wireless telephone communica-
ton will be carried on. 1t will be lust
as easy to communicate with the Cont
nent of Europe as it will be to COM
municate with England The necessarv
connections can be easily made.
There is not the slightest doubt that
eventually when the necessary con-
nec5lons have been established il vii,
be quite possible to send the voics
clear around the world There will
rot be a single corner of the world
"here q person can achieve strict
privacy, either in the air, on the
ground, upon the seas. or under the
seas.
All thus will be done noreover
without the subscriber having to make
any other effort than he does now
when he calls UP friend in town 10
make luncheon engagement. He will
not need to have any other equipment
IN his home or Office than he now has
Inc transfer from land line telephony
to wireless telephony viii be in
stantancous and automatic At differ
ent POINTS along the way ampljjers
will build up the current which is
carrying the voice and enable IL 10
complete it's long voyage.
OF course this will not be possible
upon the ocean. but the radio central
stations, which viii make trans
oceanic communications possible. will
radiate sufficient power to carry clear
across the ocean. They will also be
designed to utilize the peculiar d.
receive effect that certain acrials
possess.
These radio central stations will en-
able You eventually to communicate
With your friend who is travelling on
the Twentieth Century Express to Chi
cago, or another friend who is making
an arplane flight down the coast. or
third friend who is voyagine across
the ocean. In every case the com
;nunication viii be clear and salts
factory, and just as loud as the or
dinary communication by telephone is
a. present.