Perth Amboy evening news., 1922-07-29
Geographic News
Bulletins By the
National Geographic Society
ABOUT THE RADIO

How far Is farlS, Dei-
lin?
geography class answer in miles to-
day" says a bulletin issued from the
Washington, ID. c.. headquarters OF
the National Geographic Society.
But in a year or even a few mouths
the nswer may come in quarter
turns of a little black knob.
For radio is affecting geography
as it is affecting many other haias.
If you can hear voices and music
and perhaps 5ven the hum of traffic
in the streets of a distant city. that
city must straightway lose mucn OF
its remoteness.
The Worlds Longest Radio Wave
Even today when radio telephony
is in its infancy and radio telegrapny
is merely a slightly older brother,
our own country seems 10 be shrlnh-
ing rapidly, AID nations seem to be
gravitating closer toget 1er. 1t is as
though Europe and America, and
presently the other continents. we're
being towed toward n another by
tightening hawsers Of ether v
The capstan points for these ether
cal cab,es-the great radio tele-
graph stations-taks on a new geo
graphic interest.
Wave lengths r not IN infal-
lible index to the power of a ia6io
station nor to its sending range. nut
they indicate comparative strength
at least roughly. The station which
of all those in the world now regu-
larry uses the longest. waves-23. 600
meters or approximately IA miles
is neal bordeaux. France. 1t is the
Lafayette station, built by the Unit
ed States navy to facilitate Ameri-
cas- part in the Wo,l Id War. and
since sold to France. This station
which until recently was uneha.-
,eng-e as the worlds host powerful
STATEN sends it's t~elesraphic mes
sages with ease-and practically IN
simultaneously, of coucse-over the
5000 miles Of watec and land thar
separate Bordeaux fr.m Washing
ton; and it has been heard occasoh-
ally in Frnech InGo China, 5000
miles to the east.
"Lafayette's title to first place is
now challenged by a. commercial stu |
ton recently opened ON Lons Is-I
land. which. il it is not yet more
powerful. will be when additional
units ale added. This station sends |
on the second longes. wave in ase,
1899 meters OIL neatly ~ miles. |
and Is employed for Transmitting |
messages to Germany, about 1000
miles away. |
Communicates Over 5000 Niles
although the Unl.ed States navy's
station at Annapolis, NIL, is assish-
ed a wave of 17,14S meters (rouxhly
Ten and a half miles). the third
longest in use. it is easily one of the
worlds most powerful. stations. For |
RI nt vnoftnr oA - tEn novxr at fia i
at Cavite. Philippine Islands, op-r-
ating on 13. 800 meters. The Navy
depends on the Annapolis statiun-
which is operated, incidentally, by
remote control by can of keys in
the Navy Building in Washington
to transmit messages day in and |
day out over a radius of about 81
500 miles. This range includes the |
extreme eastern end Of the Mediier-
ranean sea, and the same territory |
can also be reached from the cppo-
site direction by the Philippine sta |
ton.
THE United States navy has the
most complete system CT high power
land Stations for radio telegraphy
of all naval establishments. South |
ward of the great Annapolis station
it has among it's larrer units the |
sending plant at Cayey, Porto Rico,
using a 10,510 meter wave, and an
other at Balboa, Canal Zone. send
ing on 10,110 meters. The eastern
portion of the Pacific is covered
from the continent by a station at
San Diego, California and smother
on Puget Sound. The former uses
waves of $500 meters and the lat
ter of 100. In the Hawaiian ISL
ands the navy has two sending sta
tons. n using 1000 meters ana
the other S,875. On Gaum is q nav
al station which sends on Q 145
meters; and finally, in the Philip
pines is the 1890 meter station
which completes the navy's band of
radio stations aroual the world. In
practically no place where it's ships
are likely to cruise viii, they be out
Of range of dots and dashes from
one or more of the navy's sending
stations.
British Jumps Shorter
THE British Navy does not main |
tain a system of land stations cf its
W but uses those OF the British
post office. These postal stations
practically encircle the earth, but
they do so in much smaller Jumps
than those of the United States navy
and therefore use less powerful sta
tons.
"Of the twelve longest wave sta |
tons which follow Annapolis. seven
are in the United States or it's ter
ritories. They are commercial sta
tions at Rarnegat. ". j., 1880 met
ers: st. James, Long Island, 1896;
Kohuku, Hawaiian Islands. 5000;
and Tuckerton, N. j.. $4,000; the
navy station at Cavite. p. l.. and
commercial stations at New Bruns-
wick, N. j., $4,000 meters and Boil
mas. Cal, 1880 meters. The five
foreign stations in this group are
British stations at Leafeld, near Ok
ford. England, $4,000 meters. and
Carnarvon. Wales, 14,400 meters; 3
Dutch station in Java. $4,000 met
ers: a Japanese station at Iwaki. 49,
600 meters. and a French station at