New-York tribune., 1922-09-10

An amendment to the regulations
governing radio transmission has been
authorized by the Department of Com
nerce, which will bring into being a
new type of broadcast station operat-
ing on a wave-length of 400 meters.
Only first-class stations will be grant
ed licenses for this wavelength under
the new scheme.
The requirements for the new "Class
B stations" follow generally the pro-
posals outlined in this department a
few weeks ago. Not only are the elec-
trical conditions in the station strictly
prescribed, but the programs are also
to be supervised. No canned" music
will be permitted, except in emergen-
cies or during the intermission between
numbers in the regular program.
At the present moment there are
upward of 500 broadcasting stations
operating on licenses throughout the
country and of this number no more
than fifteen could meet the require
ments laid down for Class B type.
Will Help Prevent Interference
The amendment to the regulations
will go long way toward clearing up
some of the present interference, and
it will insure q good, reliable program
from at least one station in every dis
trict. The recent trouble which was
experienced locally will be averted by
the scheme, and an evening program
in all parts of the city every night Will
be assured. 1t will also be of material
Importance in the plans for the new sta
ton on Forty second Street, where it
ia rroposed to send out two programs
simultaneously.
The new regulations aligned by Sec
retary Hoover and Commissioner OF
Navigation D. B. Carson are as fol-
lows:
Amendment to Regulations
To radio inspectors and others con-
cerned: Regulation 81, page So,
amended August 8, 1922, to read:
Glass Limited commercial stations
are not open to public service and are
licensed for q specific commercial serv-
ice or services defined in the license.
Stations of this class must not trans
nit to or accept public messages from
other stations. No rates are author
lied. Licenses of this class are re-
ouired for all transmitting radio sta
tions used for bsoadcasting news. con-
certs, lectures and such matter. a
wave length of $50 meters is authorized
for such service, and a wave length OF
455 meters Is authorized for broadcast.
ing crop reports and weather forecasts,
provided the use Of such wave lengths
does not interfere with ship 60 shore
or ship to ship service.
A new class of radiotelephonc broad
casting station license is hereby estan~
lished, to be known as Class "B A
license will not be issued for station
in this class 2hich does not comply in
every resreet with the specifications
hereunder. Specifications covering the
requirements governing the construc-
tion, licensing, operating and service Of
Glass sB" radioteiphone broadcasting
stations:
Station
Wave Length--The wave length of
100 meters only will be assigned for
the use Of stations Of this class, which
must be reasonably free from har-8
monies.
PowerThe power supply must be
dependable and Notwithstanding. The
minimum required will be 500 watts in
the antenna and The maximum shall
not exceed 1000 watts in the antenna
Modulation-The system must be SO
arranged as to cause the generated
radio frequency current to vary accu-
rate1y according to the sound inn
pressed upon the microphone system.
Spare Parts--Suffieien tubes and
otlaer material must be readily ayail-
1