Evening star., 1924-05-22
BATTERYLESS SETS
; SOON TO BE VOGUE
Expect Current for Tubes Will Be
! Drawn From House-Light-
= ing Sockets.
WOULD SIMPLIFY CONTROL
10000, 900 Radios Expected to Be
in Use Soon in United States.
Special Dispatch to The Star.

Special Dispatch to The Star.
ATLANTIC CITY, May 22.-"The
many technical improvements effected
both in the art of broadcasting and in
tlhc manufacture Of receiving appa-
natus during the past year have given
such impetus to the development of
she radio industry in the United
States that radio now occupies 4
leading place in American home life,''
declared David Sarnoff, vice president
And general manager of the Radio
Corporation of America, in an address
here before the forty seventh con-
vention of the National Electric Light
Association.
while radio would continue to
render unique public service
through the well established distri-
button channels of the electrical and
musical Industries, the increasing de-
mandS of the art" Mr.. Sarnoff said,
might place it in contact also with
the Central Station Industry, repre-
Sented by the electric light and power
interests of the country. 1t was
probable. therefore, that the next for
ward step in broadcast reception
would be a current supply device,
which could be added to existing
types of receivers, and which would
make the operation of any receiving
set as simple and effective as the
turning of a switch to light an cleo
tric lamp"
Present indications. Mr. Sarnoff
added, point to two methods of op-
Grating radio receivers in the near
future. These, he said, might be
clasSed as follows:
Type THE home receiver that
will draw its vacuum tube energy
through such a current supply device
operated from the lighting circuit
now supplied by the central station.
Type THE rural home receiver
pr the portable receiver, which OBJ
tains operating power from storage
or dry batteries.
In other words" Mr.. Sarnoff eX-
planned, while a permanent demand
already has been created for the dry
battery or storage battery to operate
the receiver, the rising requirements is
of the art will find place, l believe,
for Il new and additional type Of CUR
rent supply"
Discussing the many contacts which
radio has made with other in
dustries Mr.. Sarnoff pointed out that
radio already has affected the electric
light and power situation in the
United States.
more people" he said now stay
at home to enjoy radio. which means
more use of lights and greater cur
rent consumption. Radio enthusiasts
who stay up until the small hours of
the early morning to get distance
still further increase the drain on
YOUR lighting supply mains. And the
stay-up- late e-at-night' broadcast lis
tener is not a development of any
particular locality, for his type and
counterpart may be found every
where.
10000, 900 Radio Sets.
AT the present rate of progress
now being made by the radio indus
try. and in view of the direct and in
direct uses of electrical current that
would follow, it would not be long
before the radio might add $4,000, 900
yearly to the aggregate income of the
Central Station Industry, while at the
same time making radio more con-
Nenient and more economical for the
public.
TT is more than a mere prediction
TO state that 100000 radio receiv-
"rs will be in operation within the
next five years. Ny understanding is
that the lighting industry serves at
present approximately 10000, 900
wired homes, with an expected an
nual increase of 100000 homes per
Year. Hence, at the end of five years
YOU would supply electricity to at
least 15,000,0O0 homes, and we might
safely say that at least one-haIf of
these wired homes would be equipped
with radio"