New-York tribune., 1922-05-21
Approximations
Detected by Radio
Lose Their. Terror
Radio Wonderful as Adjunct
to Power Companies i'll
Many Ways, Report of
Electric Society Says

Detection of approaching thunder
storms in time to make necessary ad
justments in operation of electric scrv
ice is a valuable practical use of the
radio, according to the report of the
electrical apparatus committee of the
National Electric Light Association
presented at the convention in Atlantic
City. The radio also serves to detect
defects in electrical apparatus and
equipment more efficiently than any
other agency, the report says.
"The entire radio art has reached
an eminenty practical and dependable
oceanic telegraphy on basis compara
Bile to that of the cables probably rep
resents both the greatest investment
and the most spectacular operation
The marine use of radio, including not
only ship communication but also po
sition finding for vessels at sea, is
also of tremendous Importance. In Eu
rope wireless telegraphy is coming into
extensive use for intercity communi-
cation. Some attempts in this direction
have also been made in the United
States.
"The broadcastng of news and
weather dispatches, musical and other
entertainments, speeches and church
services by radio telephone is provd-
ing a valuable service to hundreds of
thousands of listeners. Radio has also
proved its Importance as wire line
auxiliary in the railroad field, Train
dispatching by radio has been accom~
plished many times, and some farsee-
ing railroads have installed radio
equipment as part of their permanent
plant"
Communication between plants and
substations, transmission of instruc-
'tlons to repair gangs along the lines
and the possibility of the remote con-
troll of switches are given as some of
the immediate and important applica-
tions. Installation of receiving out
fits on automobiles and motorcycles is
made where portability is desired. A
wide field for remote operation of sub
stations and switches is opened by the
application of what is known as the
wired wireless"
s"Not the least interesting outgrowth
of radiant-wave telegraphy," says the
report, sis the application of its prin-
ciples to communication along wires
1T has been found entirely feasible to
associate a radio transmitter with a
wire system running from one point to
another (even' though that wire were
used for power transmission) and to
send along the wire series of radio
frequency current waves which may be
detected at the distant end by means OF
simple rndio receiver. Such wired
wireless, as the arrangement is fire.
quently called, permits. considerable
economy in operation. 1t is claimed
for this system that fairly clear tcle-
phone communication is possible even
with lightning storms over the main
line and with all but one of the power
wires cut or grounded"
Within the last year, and even in the
last few months, q number of steps
which mark notable progress in radio
have been made, the report says
"Both transmitters and receivers
have been improved in effectiveness,
economy, reliability and convenience Of
operation. In radio telephony substan-
tial improvements have been made in
clarity of speech transmission, so that
now the radio gives a defniteness of
articulation far surprising the wire
telephone. Loud speaking apparatus
has been developed to the. point where
purity of reproduction is not sacrificed
to gain sufficient intensity. 1t is now
possible to secure reliable radio service
of character never before even ap-
proXimated."