Perth Amboy evening news., 1923-05-11
WIDENING APPLICATION OF
RADIO TOLD OF BY HASKIN
Daily Letter by Frederic j. Haskin

WASHINGTON, May 11:-Will
radio some day become as efficient
4 method OF personal communica-
ton between moving individuals as
the telephone is now for those who
are stationary?
This question does not seem ex-
traVagant in view Of some expert
ments in the use OF short wave
lengths and directive apparatus
which have been carried out by
scientists of the Bureau of Stand
ards.
1t should be said, however, that
these scientists do not sponsor any
far-1ung speculations as to what
the future of radio may be, although
they are willing to discuss 1t IN a
very interesting manner. They con-
fine their statements to the immed-
late results of their experiments,
Francis w. Dunmore and Francis
II. Engel, who conducted the e&-
periments in question, have described
the results in a scientific paper of
the Bureau of Standards "Direc-
tive Transmission on q Wave Length
of Ten Meters which is to be pub
.ished by the Government Printing
Office in a few days. and is of wide
interest to the growing world of
amateurs and professionals.
Those who are interested in the
technical details Of the apparatus
used and results obtained should
get the paper. For tho purpose of
this discussion, suffice it is to say
that the experimenters. following
up some work done recently by
Marconi and Franklin. constructed
apparatus by which they could
direct radio communication, using
u ten-meter wave length.
To the radio fan, the Importance
of this method will be Immediately
apparent, for the use of the shorter
waved lengths is am obvious nee
essity in widening the applications
of radio to the purpose of every
day life.
Traffic in the ether Is rapidly be-
coming congested. One thing nee
cssary to relieve the congestion, of
course, is the passage by Congress
of laws which will permit of the
use of a greater variety of wave
lengths and SO cut down the con-
fusion of interferencea which the
vast recent development of broad
casting has brought about.
The necessary legislation will un-
doubleday be passed iG due course.
The development of radio then Will
be largely a development in the use
the shorter wave lengths, the range
this fact which suggests the posi-
bility that radio viii become in
c~reasincly a thing of personal use.
Get Your Private Nave Length
Radio experts know that with
the shorter wave length, the range
of communication is reduced, but al
the same time the number OF dit
lerent wave lengths which may be
used is vastly increased. In other
words. with the use Of short wave
lengths, it ia not hard TO imagine a
radio system in a given vicinity not
unlike a telephone system, in which
! each party has his own wave lengrr
and his own call. Thus the indiVid-
oal travelling about by car. boat OF
airplane might be in constant com.
munication with his wife OF hi'
office. Furthermore, in the case o
| boat or airplane, with the use of tn
directing apparatus, he could be LEI
| safely home through the darkes
night. The directive parabola wOul'
merely be rotated, while at the sam
| time the message would always in
dictate the direction in which tn
beam was pointing.
The value of such a persona
/ radio communication for district
where water, mountains and othe
natural barriers make impossibs
the use of the telephone, is obvious
The p~racticabilitY of the idea j
increased by the fact that with tn
directive apparatus and the shor
wave length, much less power !
necessary, SO that such a set Woul'
be inexpensive to operate.
The use of a directive radio bean
for guiding ships at sea has alread,
been the subject of some expert
ments by Marconi and Franklin
and it probably has an importan
future in that line as we'll. In thi
work, OF course, a much create
range would be necessary.
The method is also believed 4
have great possibilities in militar
| communication. BY meal of II
moving bodies OF troops could b
kept in constant communicated
without SO much risk that their ex
change of messages would reacf
the enemy as is the case when tn
communications are broadcasteo
Inasmuch as secret communicate
between moving forces is one of tn
Dlost difficult problems OF war, it ma
be that the military use is one Q
the most important future applica
tions of the short we've length an
L1hs directiye aQpaTatpe.