Evening star. [volume] (Washington, D.C.) 1854-1972, 1927-04-01
STRICT FREQUENCY
CONTROL ASSURED
New Commission to Insist on
Wave Observance,
Reports Show.

From the maze OF lecnnlcal CONSUL
! erations that have come before the
Federal Radio Commission in the pub
lie hearings on the broadcasting situa-
ton several conclusions may be
drawn. These have to do with prob
able solutions of engineering problems
: on the transmitting end which directly
\ affect the kind of reception obtainabie
in the average radio set.
1t is q practical certainty that sta
lions will not be allowed to deviate
from their assigned freQuencies more
than the barest fraction made neces-
sary by crystal temperature varia.
lions or other conditions making con-
slant frequency difficult The COM
mission may by regulation order the
/ broadcasting apparatus 1t licenses to
include an automatic pieZo-control,
piezo-oscillator, piezo-resonator ois fire.
Quency indicator for controlling or
checking it's frequency.
This will eliminate to an extent
: wandering" from assigned wave
. lengths. making interference with sta
tons on nearby waves less likely to
! occur and eliminating audible cross
talk or squeaks. Many stations using
control mechanism have shown high
degree of constancy, the honor roll"
of stations measured by the bureau in
Guiding as standard frequency sta
tions," because they consistently have
/ shown infinitessimal deviations, NAA
Arlington: WEAF. New York: WRC,
Washington; WIZ. Bound Brook. n.
j.; WGY. Schenectady; WBZ. Spring
field. Mass. and KDKA, Pittsburgh.
The honor rolf for constant fire.
Quency stations" or those which use
control or checking devices and are
listed because of their close adherence
TO licensed values. includes wMAQ,
WMBI, WENR and WBBM, Chicago
i WHO. Des Moines: WOI, Ames. Iowa
KEYS. Cape Girardeau, Mo-; KFRU,
Columbia. Mo-; Voc, Davenport, Iowa
VITO, Hartford, Conn; WMAQ, Chi.
cago; KIDS. Independence, Mo-: KPO,
San Francisco; KGO, Oakland, Calf.
WTAM and WEAR. Cleveland;
WEAO, Columbus; WLw, Harrison,
Ohio; WCCO. st. Paul-Minneapolis;
kTHS, Hot Springs. Ark; VIVID,
Mooseheart, H.: Wis, Crete. Ill:
WEBQ, Harrisburg. ILL.,: WJAD,
Waco. Tex: WwJ, Detroit; KOA,
Denver; KFKA, Greeley, Colo;
WFBG, Altoona; WBAA, West Lafay-
cite, Ind; KFH, Wichita, Kan;
Il WCAD. Canton. n. Y: WAAM, New
ark: WOWO, Fort Wayne; WPDQ,
Buffalo. Other stations undoubtedly
have as good constancy records, but
nave not reported TO the bureau the
use or the control apparatus.
another conclusion to be drawn
from the technical discussions is that
the 1o-kilocycle separation of wave
lengths VIII doubtless be maintained.
The proposal of Supervisor Beane Of
the Chicago radio district to shift to
the uneven or terminal-5 instead of
the terminate frequencies i'm the pro.
gram broadcast spectrum also may be
adopted. At best, this will avoid the
clashing of the second harmonic with
] the wave length of another station
ana eliminate beat notes; scientists, al
Inougn uncertain about the plan, see
no objections to trying ii in view az
the small difficulty involved.
simultaneous brOadcasting on the
same frequency was suggested to take
care OF chain broadcasting. IT was
maintained that while experimentation
or two stations Is being Accomplished
successfully, 1t is not definitely DOS.
slDie to have a multi ude of stations
broadcast on the same wave from
widely diverse areas. DIR. Alfred Gold.
smith, consulting engineer of the Ma.
uonal Broadcasting Co., foresaw this
as probable later solution for the
chain problem insofar as national bro
grams are concerned. but pointed out
that neighborhood stations subscrib
ing to chain service would want to
retain another wave for their com.
munify area service
a tabloid version of THE French
Lady, current Broadway prodilc
ton. VIII be broadcast tonight by
WRC in conjunction with WEAF.
LOUIS Mann and Clara Lipman, the
stars Of the piece, are expected to
Eake part In the radio performance.
Aside from several book reviews bv
Mrs. Nina Reed, the remainder of
WRG's program will be musical. From
Il New York viii come concerts by the
Goldman Band and the Whittall
.angio.Perslans and dance program
by Wheeler Wadsworth and his
orchestra The attractions of local
origin include concert by the Bur
ington Orchestra with Fred East
baritone, as the guest soloist, and the
LORD calvert Hour OF Music. which
will be under the direction OF Fred
Stark
All of the Objectionable features
OF radio eception--fading. static.
weak and inaudible signals-combined
last night to keep dialers within local
bounds Only the super-power stations
y came through with sufficient volume
for loud speaker reproduction, and
they We're afflicted with serious at
lacks of fading.
The static alone was not severe
enough to cause the poor reception
I conditions. There seemed to be 2
II barrier Of some sort which the weaker
stations could not penetrate. Occa
+ sionally 500-watter could be picked
\ .p after careful dial adjustments. but
II required considerable ear straining
II to hear its program.