Audio Control Panels - Cessna 172P Pilot's Operating Handbook And Flight Manual

SUPPLEMENT
AUDIO CONTROL PANELS
sEcfloN I
GENERAL
io control panels
(s
this
a
uPon
how
ma,ny
The
o
of both audio
con
e're
discussed
in
the
following paragraphs'
TF,ANSMITTER SELECTOR S\I¡ITCH
corresponding to tho desired
transmitter.
The aotion
of selecting
a
particular transmitter using
the
transmitter
selector
switch simultaneously
selects the
audio
amplifior associated
with
that transmitter to provide speakor
audio.
For
example,
if
the
number
one
transmitter is
selected, the
audio
amplifier in
the number
one
NAV/COM
is
also
selected and
is
used
for ALL
speaker
audlo. Headset
audio
is not
affeoted
by audio amplifier operation.
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
9
AUDIO CONTROL PANELS
AUDIO
SELECTOR SWITCHES
Both audio control panels
(see
figure
1)
incorporate three-position
toggle-type audio selector switches
for iudividual control of the audio
systems installed in the airplane. These
switches allow receiver
audio to
be
directed
to the
airplane
spea,ker
or to
a
headset, and
heard
eingly or in
combination
with
other rocsivers. To hear a particular receiver on the
airplane
speaker, place
that receiver's audio selector switch
in
the up
(SPEAKER) positiõn. To
listen to a receiver over
a headset,
place that
receiver's
audio
selector switch in the down (PHONE)
position.
The oentor
(OFF) position turns off
all
audio from the associated receiver.
NOTE
Volume level
is
adjusted using the
individual
receiver
volume controls on
eacb
radio.
3O
May
1980
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