Flightcom 403, Installation & Operation Manual, Page: 6 / 20

CIRCU
IT
B
R
EAKE
R
PTT
7
PIL
O
T
MIC
7
2
13
9
HD
P
H
PTT
6
C
O
-PI
L
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T
HD
P
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MIC
MIC
13
HD
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HD
P
H
MIC
MIC
13
HD
P
H
HD
P
H
MIC
11
13
16
14
13
P
ASSE
N
G
E
R
S
11
15
4
11
11
11
13
6
3
PO
W
E
R
12
-2
8
V
1A
M
P
A
V
IO
NICS
G
R
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UND
TR
A
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IT
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RE
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IT
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T
RIG
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T
AU
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N
PU
T
18
19
AU
X
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10
12
12
12
12
12
5
PTT
5
NA
VIG
A
T
O
R
RE
D
BR
O
W
N
OR
A
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L
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OW
BL
AC
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24 22 23 25
AM
B
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k
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a
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in
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abo
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e
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h
headphone
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ta
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if
yo
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b
o
th
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te
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o
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D
m
o
n
a
u
ra
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c
apab
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ty
. If
a
m
onau
ra
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d
p
h
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e
is
t
o
be
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s
ed
,
s
wi
tc
h
t
h
a
t
s
ta
ti
o
n
to
M
O
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m
ode
. If
y
o
u
don
't, t
h
e
e
n
ti
re
sy
s
te
m
w
ill
n
o
t
ope
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te
p
rop
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y
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d
a
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rn
in
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t
one
m
a
y
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ound
.
S
wi
tc
h
e
s
and
m
oun
ti
ng
p
la
te
s
f
o
r
s
ix
(6
)
s
ta
ti
o
n
s
a
re
in
c
luded
with the 403 and 403d
OP
T
IONA
L
13
OP
T
IO
N
A
L
DCR Con
tr
o
l
Pa
n
e
l
and Sw
it
c
h
As
s
e
m
b
ly
18 19 20 1 17 21 8 22 23 24 25 7 2 10 9 6 3 14 5 4 13 11 12 16 15
IC
S
Is
o
la
te
F
L
IG
H
T
C
O
M
403
Sq
Vo
l
O
p
tiona
l
S
M
A
L
L
P
ane
l
MIC
HD
P
H
C
O
N
N
EC
T
IO
N
S
T
O
E
X
IST
IN
G
JA
C
K
S
AIRCR
AF
T
R
AD
IO
403
HD
P
H
TI
P
RING
BA
R
R
E
L
ST
ER
EO
MO
N
O
FLI
G
HTCO
M
4
0
3
In
te
rc
o
m
IC
S
S
que
lc
h
INT
E
RC
O
M
Is
olat
e
Vo
lu
m
e
Rear view (Solder Terminal Side) of 25 pin D-sub plu
g
(male Pins)
13
25
14
1
403d Option
intercoms.
Figure 6
- Connection Schematic - Mono Mode
NOTES: Isolate all mic jacks from airframe.
Figure 6 - Connection Schematic -
Stereo
Mode
4