Evening star., 1934-03-20
WLW TO TEST NEW
ERDUR|NGDAY
Giant TTanSmitter Is Proved
Success-Sports Reviews
Planned.

w YITH night testing of its
n giant new 000-Watt
NV transmitter now virtually
completed, WLW has just
teen granted authority by
the Federal Radio Commission to en-
bark on a series of daytime tests. At
the conclusion of these final tests
application will be made for permis-
sion to operate the new tranSmitter,
with its most powerful radio broadcast
signal ever generated, on a regular
day and night schedule.
Exhaustive tests conducted almost
nightly between l and am. during
the past two months have found the
new tranSmitter equipment meeting
all the rigorous requirements orig
inally set forth as to its performance
Actual operation thus far has def
nitely established a number of facts
which-although predicted by en-
gineers responsible for the design and
construction of the new -kilowatt
ranSmitter-existed in the past only
in theoretical SuppoSition.
For example, it has been proved
that a 500-kilowatt station, with its
tremendous 2,000,000-watt undiStorted
peak of meditation, can be built so
that in actual service it will modulate
fully 100 per cent; that is, provide the
greatest possible program signal on its
carrier wave. That an exceptionally
high quality can be obtained is eS-
tablished through the fact that its
frequency characteristics are essen
tally flaS (within two decibels) from
30 to 10000 cycleS-a range extending
from slightly below the lowest note
to twice above the highest note on a
piano keyboard-and that its audio
harmonics are of negligible quantity
being below 10 per cent, a quality
rarely found even in the most modern
tranSmitterS.
Numerous field strength measure
mentS made throughout the country
and careful analysis of reports con-
firm almost exactly the predicted
service of this Goliath of the air. The
10-fold increase in power over WLW's
present 50,000-WattS has increased
that stations signal strength at all
points approximately 325 per cent
while increasing its secondary service
area by about 900 per cent. In thus
raising the signal level to within the
limits of automatic volume control
provided in modern receiving sets,
fading has been materially reduced
and even entirely eliminated in many
localities. Satisfactory reception in
many sections where static and in
reference have in the past made
such reception impossible has been
reported.
A NEW sponsored series of sports
"A reviews will make its debut over
WJSV April 2. with Arch McDon-
aid, veteran Southern sports an
nouncer, at the microphone. The pro-
grams will be broadcast every night.
Local sports will be featured. Nc
Donald is now at the Biloxi training
camp Of the Washington base ball
team, gathering material for his initial
broadcast. During the base ball sea-
son he will broadcast play by play
description of the out-of-toWn games,
based on a Geographic account to be
sent to him at the WJSV studio.
Mcdonald came to Washington
from WOOD at Chattanooga, Tenn,
where he broadcast daily sports
resumes for several years.
X x x X
CHICAGOS wheat pit is to have
~ its moment on the air at the most
dramatic time of day, the closing
period, in a special Columbia broad
cast, described as Romance of the
Wheat Pit"
Starting from the WBBM Chicago
studios, the program will be switched
first to the Board Of Trade Building,
then in ORDER to a grain elevator, to
a grain brokers' office. to the execu-
tive Offices of the board and finally to
the wheat pit itself. The date set
for the broadcast is the first Satur-
day in April.
x x X
CERMAINE, The Little French
" Girl" will be guest artist on the
Woman's Hour at GAS am. to-
morrow on WJSV. She will sing a
group of French songs and take the
radio audience on a tour OF Nor
mandy. ;
For several years, Germaine broad
cast over VOL and WMAL.