Evening star., 1924-10-14
MARC0N| TO OPEN
/ RADIO EXPOSITION
Famous Inventor Listed Gen.
trail Figure in Broadcasting
Test November 3.

NEW YORK. October 14--Guglielmo
Marconi. the father of radio" will
open the third annual national radio
exposition at Grand Central Palace.
New York. on the evening of Novem-
ber 3. The famous inventor will be
the central figure in a remarkable
demonstration of international broad
casting, to be followed by An excep-
tional program of entertainment and
education given on mammoth scale
by the leading broadcasters and radio
manufacturers of the United States.
At an appointed moment on the
opening day. Marconi, in his London
laboratory, will touch the key of a
special transmitting instrument. re-
leasing by radio bolt OF power that
will be hurled across the ocean and
simultaneously light a huge Ameri-
can flag outlined in electric lights at
Grand Central Palace.
Immediately thereafter three Of
the most powerful stations in the
United States, WIZ in New York.
WRC in Washington and WGY in
schenectady, will be joined together
to broadcast to Mr. Marconi a mes
sage of greeting from the radio fans
OF America. direct from the national
radio exposition at Grand Central
Palace. Many broadcas sting stations,
both in the United States and on the
other side of the water. will offer the
courtesy of silence in the air" for
the few moments that will be re-
CURED to accomplish this feat As
atmospheric conditions also are
usually favorable during this period
or the year, the wizard of wirele ess-
as, in fact. most of Europe-will have
little difficulty. it is expected. in hear
ing the voice Of America transmitted
across the Atlantic Ocean.
Another thrilling demonstration at
tempted for the first time in the his
tory of radio will be race against
time to be staged at the National
1tadio Exposition during the week of
November to s. From a wireless
transmitting and receiving plant, to
De installed at Grant Central Palace
for the week of the show, two radio
Geographic signals will be released
simultaneously and sent flashing
around the world in opposite diree-
tions, to return to Grand Central
Palace after the messages hav COM
pletely circumnavigated the globe
The famous letter So used by Mar
conf in his first historic achievement
of spanning the ocean by radio. will
he the signal used in the extraor-
binary experiment to be conducted at
the exposition by group of leading
radio engineers.
Race to BE VisuaIixed.
The race against time will be
vfSuali5ed on a great world map tc
be hung on the mezzanine foor OF
the Grand Central Palace. AS each
signal is received at and relayed from
country to country a white and RED
light, respectively. will fash from
those parts of the map. and a specia'
loudspeaker will repeat the acknowl-
edgments from England, France. Ger.
many, Norway. Poland, China. Japan
Honolulu and the American West
Coast stations. One of the message
will be sent across the Atlantic to
Europe, to return eventually via the
Pacific, while the other will be
flashed to San Francisco. thence tc
Honolulu, across the Pacific and come
back to Grand Central Palace via the
Atlantic Ocean. 1t is believed the
messages will circle the world only
fraction Of second apart, and that
the whole feat will be completed in
less than two minutes.
A striking demonstration Of radio
in the field of teledynamics also will
be wftnesse at the national radio
exposition. A pan of fiashlight pow
der in Grand Central Palace will be
touched off by radio from a point
across the Atlantic Ocean. In the
fraction OF a second in which this
binding flash occurs an automatic
camera will click and take a grouI
picture of the opening-nig throngs
assembled at the exposition.