Evening star., 1924-10-22
$5Q,0DO,ODO RADIO
SALES ANTICIPATED
Manufacturers Expect Rush.
ing Business Between
Now and Next April.
BY j. c. ROYLE.

Special Dispatch to The Star
NEW YORK, October 22-Manufac-
turers OF radio receiving sets expect to
sell at least $50, 900, 900 worth Of equip
ment between now and April 1, 1925.
one company, holding the patents gov
erning the neutrodyne process, antici-
pates realizing more than $1,065, 900 in
royalties on the gross sales of the IA
manufacturers licensed to use the
formulae.
The figures give an idea of the tre-
mendous growth of demand for radio
equipment in the United States. There
are at present about 100000 hcmes
equipped with receiving sets. OF this
| number more than two-thirds are pro-
vided with crystal sets. Manufacturers,
however, estimate that in the next few
years 100000 homes will be equipped
with sets of the more expensive type.
At the most conservative estimate. that
will mean IAN investment by the public
of at least s5o0,000, 900.
Big Christmas Sales Soon.
The radio sales for the next two months
! probably win be at heavy rate because
OF the stimulus Of Christmas buying, but
January, February and March normally
are the heaviest months OF the year in
this industry. The claim that within a
year or so 10000, 900 homes will be equip
! ped with receiving sets does not seem
unduly optimistic when ii Is realized
that 100000 homes in America have
monographs and Il, 500, 900 families have
automobiles.
The amount OF experimental work
| which has been done in the radio
field I'm the last few days has not
been exceeded in any other industry.
Those experiments are still going on.
but engineers who have been prom
inent in the work believe that from
now on the greatest developments VIII
be in broadcasting rather than in re-
ceiSing apparatus.
Only Minor Changes Likely.
Improvements undoubtedly will be
made, they say, but there Is nothing
in sight SO far as is generally known
which would produce basic change
in receiving equipment. In II years
of intensive experimentation only
! four basic principles of radio recep-
tion have been developed. In 1911 the
radio frequency" amplification sys-
tenn was worked out by German
| scientists Two years later. Maj. f. H.
Armstrong developed the "regenera-
tive" system. He followed up this
| work by perfecting the super
Heterodyne" system in 1918, working
, under the stimulus of the great war
| that time broadcasting, as now under
| stood, had not been developed. In
| 1922 Prof. Louis A. HaZeltine worked
| out the neutrodyne system.
Quickly I'm Commercial Use.
Among inventors, Prof. Hazeltine
| is regarded as having fallen into a
| prodigeous piece of luck. This was
not because his invention was made
| fortuitously or by chance, but be-
| cause, when he had worked it out
and had model made, 1t proved
| ready to go into immediate produc-
| tion. At least one other invention
made about the same time and per-
haps of equal basic Importance is
| known to be in the hands of one of
| the big radio manufacturers whose
| engineers are still engaged In ironing
| out some of the kinks which have
kept it from commercial production
| although the general principle has
been established and accepted.
Radio men feel that a big step will
| be taken in the progress of radio
broadcasting and reception with the
ALLEGATION of new wave lengths for
ship communication.