Evening star., 1923-03-19
MAY EXPAND RADIO
| SET WAVE LENGTHS
Experts viii Propose Method
of Cutting Down lnterfer-
ence With Messages.
CONGESTION INTOLERABLE
Accurate Communication Almost
Destroyed by Conflict of Va
rious Stations.
CONGESTION INTOLERABLE

Expansion of the wave lengths as
signed to broadcast stations from
$50 TO $50 meters and staggering their
use so that the lower and higher
wave bands will be assigned to inland
transmitting stations well removed
from coastal stations which use 500
and 500 meter wave lengths will be urged
by the National Radio Chamber of
Commerce at the conference to be
held at the Department of Commerce
tomorrow to consider what admins
trative ways and means should be
adopted for the prevention of inter-
! ference.
The chamber also will recommend
that. due to commercial ship and
shore use of the wave lengths. 800.
$50 and 600 meters and in some locali-
ties J25 meters. wave lengths of $50,
400 and sos meters be considered for
coastal broadca sting stations, and
that for inland stations the wave
lengths of $50. 345 $50, 41S, $40. 400,
ass, 535 and 55o meters, differing by
j per cent. be considered and selected
alternately when assigned in the
same radio district so as to make the
percentage of separation of con-
tiguous stations as large IS practi-
cable.
Interference IntOlcrabIe.
The chamber suggests that recourse
to wave-length bands higher than 500
meters be taken only after exhaust
ing every other solution. Should
higher wave-length bands be consid-
cred necessary" said statement is
sued by the body today, lit is earnest
ly urged that the public interest be
protected by granting sufficient time
to the manufacturers to produce and
the public to purchase the necessary
apparatus to extend the wave-length
! range of receivers already sold and
in the hands of the public
The chambers statement declared
that the interference in the air has
produced situation intolerable to
the nations 100000 radio users and
emphasized that 1t is absolutely
necessary that immediate relief be
found. A nationwide survey by the
/ body's broadcasting committee, it was
said disclosed that congestion of
radio communication has increased to
such an extent that the value of this
medium to the public is seriously en-
dangered by the resulting interfer-
ence."
The personnel of the general radio
committee which will endeavor to de-
wise some plan of relieving the in
! reference was announced today by
, Secretary Hoover. A large number
! of persons interested in wireless op-
! erations are expected to appear dur
! ing the conference, and arrangements
have been tentatively made for open
/ hearings.
Members of Committee.
| Maj. Gen. George o. Squier. chief
signal officer of the Army, will repre-
sent the War Department on the COM
mittee. Other members will be Com
| mander D. c. Bingham. Navy De-
partment; w. A. Wheeler, Depart
| ment of Agriculture: John w Suth-
erin, Post Office Department; F. F.
! Guthrie. Shipping Board; Edwin H
Armstrong. Columbia University; DR.
| Alfred N. Goldsmith, Institute OF
Radio Eng ineers; Prof. v. L. Hogan
| consulting radio engineer of New
York; c. B. Cooper of New York
| Hiram Percy Maxim, president of the
! American Radio Relay League: Prof
G. M. Jansky, University of Mime
| sofa; A. H. Griswold, American Tele-
graph and Telephone Company; Leo
Fitzpatrick, radio editor of the Kan
sas City Star; d. b. Carson and w
D.. Terrell of the bureau of naviga-
| tion, and j. III. Dellinger and l.. E.
Whittemore of the bureau of stand
ards.