Evening star., 1923-07-01
BY PAUL GRIGGs.

A radiophone broadcast stations
fame is dependent upon three princi-
pal governing features. They are
excellence of the Installation and the
acoustical properties of the broadcast
studio.
OF these three features, the broad
cast studio is Of equal II not OF the
greater Importance.
The transmitting range of a sta
tion is dependent on the power Of it's
transmitter. powers which now range
from a few watts to approximately
5000 watts and which may eventu-
| ally reach 100000 watts or higher.
The transmitter. in turn, Is dependent
for Its effective functioning on the
antenna circuit with which its own
circuits are associated. II these cir
cults are adjusted to resonance, or
electrical harmony with each other
on the stations broadcast wave or
frequency, then the higher the over
head antenna wires are suspended
above the earth and the lower the
! total resistance value of the over
head and ground" parts Of the an
tenna circuit. the greater will be the
effective signal energy produced by
space by the antenna.
We can see then that powerful
broadcast music and speech signals.
which may be made audible many
hundreds of miles from the transmit
| radiated without considering the acous-
ticai properties of the broadcast studio
at ali.
Signal Quality Considered.
1 Although we can thus produce sig
halls of great carrying strength, We
cannot insure signal quality, and 1t
is on the quality Of the broadcast
stations. product that their fame
The great army of invisible radio
fan critics Judge by the quality Of
incoming signals without regard to
any prepossessing personal charac-
teristics which the performers may
| qualifications but of which the dis
tant radio fan is not aware.
However powerful broadcast
transmitter may be. and although its
associated circuits may be technically
perfect, and though the most famous
artists may be employed. the broad
cast program will be jarring to the
nerves of the radio fan audience and
decidedly unpleasant to listen to IL
| the acoustical properties of the broad
4 cast StuQlO are greatly uSIcCtiNe.
I What would otherwise consist Of a
delightful artistic program might
thus degenerate into rank interfer-
ence, and to the detriment of the pro-
fessional reputation of the artists en-
gagged, the fame of the individual
station. and, by inference at least, the
business prestige of the broadcast
concern.
The broadcast studio is, therefore.
| an extremely important. IL not the
most important. feature of a radio
phone broadcast station.
The important features of the
broadcast studio are it's acoustical
properties, the studios microphone,
! and, of course. the performers.
Link Between Operatives.
The link between the creative pow
ers of the artists in the. broadcast
studio and the distant radio fan in
! his home Is the studios microphone.
/ Whether or not the technique of the
| artist is faithfully transformed into
4 its corresponding electromagnetic
| equivalent. to be picked out of the
i air and faithfully reproduced at dis
! tant receiving stations. depends. pri-
marily, on the acoustical properties
| of the studio.
Unlike the performers and the
! microphone, the acoustical proper
| ties of the studio present an intangi-