Evening star., 1923-04-22
RADIO GOSSIP AND NEWS

The realloca ton Of wave lengths u
,Ja.s r stations ordered by the De-
partment of Commerce to become ef-
rec.ive May u, will have no effect on
me Washington radio broadcasting sta
IONS at the present time. There are
20 stations operating in the District
that meet the requirements OF the
,lass z stations. The new Radio Cor
poration OF America station which will
begin broadcasting before June l. how
syer is expected to receive class b
License and assigned the 43o meter wave
lngth which has been designated for
stations of this class in the District.
To receive Glass b license the sta
lions must comply in every respect
with the following specifications:
Wave Length-The wave lengths be
tween 300 and 345 and 375 and 645 meters
only will be assigned for the use OF sta
ions of this class, which must be free
ths use Of coupled circuit transmitter
will be required. Hereafter but one
ssave length within these ranges, in
,lluding the 400 meters wave length,
will be assigned to any one locality.
PowerThe power supply must De
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
,adio frequency current to vary accu
rately according to the sound impressed
upon the microphone system.
Spare Parls-Suff1cient tubes and
other material must be readily available
10 insure continuity and reliability OF
tho announced schedule Of service.
Antenna-T The antenna must De &C
constructed as to prevent swinging.
Signaling System-Some adequate
and dependable system must be pro
vided for communication between the
operating room and the studio.
Studio-The radio equipment in the
studio must be limited to that essen
tai for use in the room. The room
shall be SO arranged as to avoid sound
reyerberations and to exclude eXterna
and unnecessary noises.
Programs-The programs must be
carefully supervised and maintained &c
insure satisfactory service to the
Music-The use of mechanically op-
erated musical instruments is pro-
hibited.
Division Of Time-Where two or more
stations of Glass B are licensed ir
the same city or locality division OF
time will be required if. necessary.
Licenses issued for the use Of the
wave lengths between 300 and S4S
specifically provide that any failure tc
maintain the standards prescribed fol-
such stations may result in the for
feiture Of the Glass B privilege and re.
licensing Of the station to use wave
length below 300 meters.
Class A radiotelephone broadcastins
station licenses will be issued to sta
lions equipped to use power not eX.
..ceding 500 watts in the antenna ant
will be assigned a wave length betweer
80 meters $3.50 kilocycles) and 3Ot
meters 1000 kilocycles).
Where more than one station Of thl:
class are licensed in the same city ol
locality a division of time' will be re-
uuired if necessary.
In assigning the new wave length:
the Department of Commerce divided
the United States into five zones. witt
separate wave lengths designated FOL
certain localities in each zone. Three
classes Of broadcasting station licenses
will be issued: ,..az. ..,-
Glass a. using power not exceeding