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••••••
AUDIO
CONTROL SYSTEM PANEL (CONT)
FUGHT
OPERATION
1. MASTER VOL and PASS SPKR VOL Controls - Rotate
to
a com-
fortable listening level.
2.
Applicable Mixer Switches -
Set
"on" (except PASS
ADF)
and
adjust audio gain controls
on
each system for comfortable volume
level.
:E!~
The
VHF 1
and
VHF 2 volume controls do not affect
sidetone levels.
The
HF volume control
will
affect
the
sidetone level
on
most models since audio and sidetone
utilize a common line from the transceivers.
Some
HF
transceivers
do
not
have sidetone capabilities.
3. Microphone Function Selector - Rotate
to
desired poSition.
4. To provide ADF audio
to
the
PASS SPKR:
a.
ADF 1
or
ADF 2
(if
installed) Mixer Switch - Set
to
mss
position.
b.
PASS SPKR-VOL ADJ Switch -
Set
to
VOL ADJ.
c.
PASS SPKR VOL Control - Rotate
to
approximate "mid"
position.
d. Tune in desired station
on
ADF receiver
and
adjust cockpit
speaker
volume utilizing ADF system volume control.
e.
PASS SPKR-VOL ADJ Switch -
Set
to
PASS SPKR. ADF
audio
will
be transferred
to
passenger speakers.
f.
Adjust passenger
speaker
volume with PASS SPKR VOL con-
trol
or
ADF system volume control.
The
audio mixer inputs
and
microphone can
be
used in the normal
manner
but received
audio
will
be through speaker and headphones.
FAA APPROVED 4-30-76
REISSUED 2-25-81, CHANGE
10
2-81