Evening star., 1924-03-12


| oceanic station VII at New Bruns-
given by Capt. Ranger the radio i'm
pulse was hurtled across the ocean
by this station to the receiving sta
ton at Warsaw, where it went
through a thirty five mile telegra ph
relay and automatically transmitted
through the sending station on a
lower wave band back to the re-
ceiving station at Riverhead. Long
Island, \. Y, total distance OF
The large audience at the Cosmos
Club, which included prominent gov
ernment officials and radio engineers
saw the signals as they compile ed
| the long circuit by means of the mo-
tion picture apparatus and the record
ing tape. The receiving set which
had been tuned in resonance, had
fourteen tubes, and consisted of a
detector unit and audio and radio
one or the largest receiving sets ever
constructed
First Sent Message.
Capt. Ranger pointed out that the
antenna at the transmitting station
In New Brunswick, where tho radio
impulse started on it's $500 circuit
is one and a half miles long, while
the receiving antenna at Riyerhead,
winch picked up the signal as it was
miles long.
Before conducting the speed test
capt. Ranger sent message to
Traffic Manager Grasser at the War
saw station, which was submitted by
Capt. Stander. 1t follows:
Who is Maurice Pate?"
About three minutes later Mr..
ERASER in Warsaw, who was aroused
from his slumbers at am. (Polish
timel. replied as follows: The only
l in,
nected with an oil company"
Mr. Gfasser also apologized for the
dciay: pointing out that a severe
thunderstorm was raging over War
saw at the time and interfered with
lFalsmlsSion conditions.
Will Guide Ships.
can't. Ranger predicted that the
radlo waves would revolutionize RAJ
no The time is not far distant. he
SAID, when ships will measure dis
lahce at sea by radio waves instead
a., al oS nautical miles, and all polar
INTO the hidden reaches of the trop-
inspired.
Instead Of saying Il ship travels
twelve knots an hour, as at present !"
he said, mariners NAV be reomirsd
10 speak of distances in terms of
wave lengths-thus a ship NAV trav-
el westward at twelve wave lengths
anu anu hour and radio instrument in
speed at glance. Radio can sunnIv
direction of the explorers from
radio base stations and by a cross-se
eion OF Two such directions from two
,;nn io s6Ia.ions 6a give the exact loca-
non. one of the best features of
lhls process is that it can be ar
ranged so that ii is not alone possi-
b bie ior explorers to locate themselves,
wai, OUT raddo 1o base stations may equally
conditlons the Cook-Peary episode
couid never have happened"
Doubts Reaching Mars.
capt. Ranger expressed doubt that
rauio communication will ever he eS
tahiished with Mars. The earth is
ehseioped in gas which acts as an
-; aeSirtc mirror surface he said, and
is virtually impervious to radio waves
The layer about the earth" he de-
ciared, known as the heavyside sur
ace. reduces the chances for hearing
naItian signals, as any such trans
mltted from Mars will be largely re-
Iecteu from lhe outside of any such
suIIaceS. AS conducting medium it
would act as a FSiraday cage to keen
OUT stray fields. Furthermore the
general means for reception on the
earth are pretty closely tied up with
electric waves for travelling over the
earth's surface rather than down to
It. The normal radio receiver has diff
hcuity IN hearing an airplane radio
transmltter directly overhead. So we
may not be expected to hear much
from Mars on our broadcast receivers.
The Shenandoah, flying far above the
earth might have a better chance"
capt Ranger closed his demonstra-
tion with an explanation of the cause
OF fadlng, one of the bugaboos of
radio broadcast reception. He point
ed out that radio waves leavea trans
hitting station in many different di-
rections. When all of these waves
are picked up simultaneously by the
receiving station, the signals are at
maximum strength, he said, while IL
only d few of these waves are picked
up In resonance, the signals decrease
and fadIng results. Short wave trans
mitting, he predicted, will eliminate
much of the fading.