Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1922-07-02
.D|RECT|QNAL RADIO IS
OUTLINED BY M!AACON|
Father of Modern Radio Dis
covers Scheme for Secret
transmission.
DISTORTION Is ELIMINATED

New Invention Sort of Lighthouse
beacon Which Enables Sending of
Concerts To Desired Point without
Interfering With Other stations.
The radio searchllght, method by
which radio waves transmitted from
eToadcasting station can be re-
hected in any desired direction. just
as light rays are directed from a
searchiiShi. was announced by SEN
atore GuGl!elmo Marconi in his ad-
dress before Joint meeting Of the
Institute OF Radio Engineers and the
American Institute OF Electrical En-
ginee-s in New York recently
At present radio waves. upon leav-
INK the antenna, scatter in all di-
reciions. His apparatus. which in
no way resembles 4 searchlight. blu,
Is series OF wires arranged in a
/ special way on towers or masts.
sends the message through the ether
in enc direction only. Marconi said.
He ampined his words by 4 demon
siraiion in the hall. Messages trans
miited were picked up clearly. on
one side of the room. but could
scarcely be heard with similar re-
ceiving apparatus on the other. and
vice versa.
With his system OF refIectors. Mar
conf stated that he had SUCCESSFULLY
conducted radio telephone converse
lions between London and B!rmine-
hsn distance OF 100 miles This Is
record in long distance radio
transmission and reception with very
snort waves. In all these expert
ments the wave length varied from
one 10 twenty meters
The reaectors make it possible for
the receiving station II reproduce n
telephone song or speech about gao
times louder than is now noss,hIa
and without distortion. The trans
hitting aerial can ne used both for
transmitting and receiving at the
same time.
In these days Of hrosdcastinE, II
may still prove TO be very useful 10
nave n practically new system which
would De 10 very large degree Sc
cTei when compared 10 the usual
Kind OF radio" said Marconi
Marconrs Radio Lighthouses.
Maroon! described revolving
iransm'tter and reflector which acts
as kind OF wireless lighthouse or
beacon. BY means OF the revolv-
ing oean.' he stated. 1t is possible
Tor ships TO asccrtalo in thioS
weather The bearing and position Of
the lighthouse"
In wireless, electric energy is
flashed into space In waves. The
e.siance from one wave crest 10 an
other is called the wave length
and Is usually expressed in me;er,.
III tnese days. when radio is the
Aoohy OF millions. the wav. length
may be anything from 200 10 90 oO6
meters In other words. the e,her y,
space is shaken into terrific pillows
compared with which the mish,ics,
uphtavsls Of the ocean are mere
riprles
As far bae}; as 1898 and 1895.
Had obtained some promising results
VAIN waves not more than few
inches long sad Marconi He then
proceeded 10 describe how he had re-
turned 20 his original Idea OF using
shore waves
= miomohiies Interfere with Radio.
Ma-coni stated that when yery
snort raves are used. disturbances
caused b. static can De said 20 D.
@-Hlost noneSistcnt and the only in.
'eT'sTtnce comes from the ignition
apparatus q automobiles and mo.
'o'ho"N iie predicted that. Tho
20! iLsE con- "neu We xiii have TO
screen our i.n.tion sy.,em or carry
inc so'''"''s"' license 'or transmit,
The question 3. 10 whether i,
"7u!d Dc possible 70 iransmlt radio
signals right a-our< the world ia an.
n'.th mas always fascinated me"
Marc2r' assured his hearers. He dis.
enftrtc tina, there is something IN
iHe .6ea o. the wireless waves travel
!h4 around the earsh IN various way,
'eEn!'lhS az the An,ipodcs"
9'me''H"s these radio waves travel
he sround ne earth in different
Was Te-enforce e.cb n,h.- q. -
ctIEeT and sometimes they inter
ftre win each other. Tuning. how
yer overcomes The in;ert.-eoc..
ne enormous station bull, by the
Ram" Corporation Or America n,
ToF' Jefferson, Long Island. Marconi
'oUnd. sent waves which "orafer,.a
!" 'Eaf"l three quarters Of the ,goy
sf"un> The earth rather than come
'-e hhorteEt way round"
Gives Talk on static.
ga tic sGbject 10 which the re-
ssa'ch engineers OF the Radio Cor
''fation OF America have devoted
much s'udy in This country. WINS aisa
a'scnHsed ~ Marconi. lie told nj.
h"hr%rs that thnre are particularly
violent types NJ static over Africa
ana s"uth America. hut that sta,,c
did not interfer" very seriou.Iv :,
'fahspcean.c COMMUNICATION in tenn
r"rat- zore-
a~natore Marconi Is visiting this
country FOR the nrst time In do
,Hds az guest o, tn. Radio Corpora.
Ion o' hm"r.cn He came in his
van inc Electra noa,inr radio
!aooratory "a consult with Am.rI.
can engineers on recent deveIopmen,s
In his new science.
New FIInmrni Rhcostaf..