Indiana daily times., 1922-05-19
TranSOcednic Radio Gr0rn to
Tremendous Business.
by DAVID SARNOFF,
General Manager Radio Corporation Q
America

by DAVID SARNOFF.
General Manager Radio Corporation of
I America.
The vastness Of the transoceanic radio
today is little appreciated by the general
public. score of nations In Europe
and Asia are in regular radio telegraph
communication with America and mil
lions Of words are exchanged In a
straight commercial message business
operated day and night.
| A great network OF high power sta
| tions is required 10 maintain the world
wide system Of the Radio Corporation
| of America; powerful transmitters are
| located In Massachusetts,, Long Island,
New Jersey, California and Hawaii
South America. too, will soon be ade-
quately provided for. and already Amer
/ lea is conceded the foremost position in
| the matter of commercial radio com
municatIons. The correspondent sta
| tions abroad are located In the important
communication centers Of Europe, Ha-
wat and In Japan.
In the accomplishment Of the relfab BILE
trans-oeean service which prevails to-
day, radio telegrnphy has made some
wonderful strides in technical develop
ment. The old time spark" station has
made way for newer type, transmitting
signals carried on a continuous wave
through which speed and accuracy have
been increased and interference reduced
to minimum. This great Improvement
Is largely due to the development OF the
Alexanderson alternator, a radio fre
quency machine which gives an output
Of 200 kilowatts, and which Is produced
by the General Electric Company. More
than q dozen OF these machines have
bene installed in American stations
Marked increase In the radiating ef-
ficiency Of these transmitting stations
has come too, through improved design
and application Of the multiple tuned an
tenna. And Of equal Importance Is the
corresponding development Of long dis
tance reception, whereby messages are
now automatically transferred from the
receiving station over land wires direct
to a single office. located in the heart
OF New Yorks financial district, there
| too be recorded automatically at high
speed In Ink on paper tape and trans-
cribed on message blanks by operators
BY this method, elimination Of the
| human relay at the receiving station has
Deen erected, an obvious saving In timo
and an aid to accuracy. or still more
recent date Is the new method devised
by which two or more radio signals may
simultaneously be transferred to the
operating office over single wire, and
the concurrent development Of devices
which make It possible to receive sig,
nails from four European stations on
one receiving antenna without mutual
interference
Only a few thigh spots" have been
touched in the foregoing reference to
the radio system existing at the present
day; it includes, of course, a CONNER
cial organization represented In principal
cities by branch offices, and a mcssenge,
service adequate to take care Of mes.
sage traffic-a traffic which has grown
within the last two years to something
more than 20 per cent of the total bust
ness handled by seventeen cables con,
Meeting the old world with the new
Another article the radio Of today
and tomorrow by David Sarnofr will ap-
pear In forthcoming issue Of the Times.