RAZAIR
‐
A1
‐
METRO
‐
III
‐
AFM
‐
001
2
‐
7
Fig.
80
Audio
Control
Panel
The
following
functions
are
enabled:
1.
AUDIO:
a.
VHF1:
Enables
audio
reception
for
the
VHF1
(COM1)
receiver.
b.
VHF2:
Enables
audio
reception
for
both
VHF1
and
VHF2
receivers.
c.
NAV1:
Enables
audio
reception
for
the
NAV1
IDENT
Morse
code.
d.
NAV2:
Enables
audio
reception
for
the
NAV2
IDENT
Morse
code.
e.
DME1:
Enables
audio
reception
for
the
DME
IDENT
Morse
code.
f.
DME2:
Enables
audio
reception
for
the
DME
IDENT
Morse
code.
g.
ADF1:
Enables
audio
reception
for
the
ADF1
IDENT
Morse
code.
h.
ADF2:
Enables
audio
reception
for
the
ADF2
IDENT
Morse
code.
i.
MKR:
Enables
audio
reception
for
MARKER
Beacons
signals.
2.
MICROPHONE:
a.
VHF1:
Selects
VHF1
for
radio
transmission.
b.
VHF2:
Selects
VHF2
for
radio
transmission.
OPERATION
All
AUDIO
functions,
except
for
the
VHF1
and
VHF2
reception
switches,
work
as
a
toggle.
Clicking
on
it
repeatedly
selects/deselects
the
desired
function.
VHF1
and
VHF2
reception
cannot
be
deselected
by
clicking
on
the
same
button.
Instead
they
are
mutually
exclusive,
which
means
that
selecting
VHF1
will
deselect
VHF2
and
viceversa.