THE
TRANSMITTER
Your
Acousticon
tran
smitter
contains a
sensitive crystal
mi
crophone
lo
ca
ted be-
hind the small
opening
at
th
e top of
the
transmitter. (see
fig
. 1)
The
"A"
and
"B"
batteries,
thr
ee mini-
ature
but
powerful
vacuum
tubes (in add.i-
tion to a
multitude
of
other
electronic
parts)
are
also contained within the trans-
mitter.
THE VOLUME CONTROL
A
combination
volume
contro
l
and
ON-
OFF switch is located
at
the
upp
er
left
corner of the transmitter (See
fig.
1) .
When
the easi
ly
turned
volume control wheel
is
in the extreme left position, a switch
auto-
matically disco
nnect
s
the
batteries.
Turning
the wheel toward the right,
automa
tically
moves the switch to the
"ON"
position.
As
you
turn
the wheel
more
and
more to
the right the sounds become increasingly
louder.
For
normal acoustic conditions with
fresh batteries you need a cer
tain
volume
control
se
tting
depending
upon
your
hear-
ing
los
s. As the batteries become weaker,
you
mer
e
ly
advance
the
volume
control to
compensate for reduced
battery
voltage.
. 4··.·.·.·.·············
During
a
normal
day's use you will
als.o
learn to
adjus
t
the
volume control for
van-
ous acoustic
cond
ition
s.
Always use the
minimum
amplific
ation
consistent with
yo
ur
needs,
as
this will give you
maximum
"B"
battery
life.
Wh
en
your Acousticon
is
not in u
se,
tum
the volume control wheel to the ex-
treme l
eft
position.
Make
sure it is
turned
as far
as
it
will go, otherwise
th
e switch
will not disconn
ect
the
batterie
s.
THE
NOISE
SUPPRESSOR
The
plastic
plug
at
the
end
of the receiver
cord al
so
act
s as a
convenient
knob for the
noise suppressor.
This
knob
can
be
adjuste
d to
either
one
of two positions,
that
is,
when the
"wing"
on
the
knob points
toward
the
white
dot
near
the volume control, the noise s
up-
pressor is on.
For
normal
operation,
twist
the knob so
that
the
"wing"
points
away
from the white dot.
Th
e noi
se
suppressor should be u
se
d in
noi
sy
s
urroundings
such
as
restaurant
s,
on
noi
sy
street
s,
in the vicinity of noisy
ma-
c
hin
ery, etc.
You will find
that
in noisy s
urroundings,
people
uncon
sciously raise their voices in
an
effort to be
heard
above the noise.
The
se loud sounds
may
at
tim
es
ove
rtax
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