TRANSCEIVER
R
G
P
E
F
C
J
H
D
K
M
B
A
N
J
1
PTT
TUNE INITATE
+
VDC
12
GND
AMP PTT
RS
TXD
/
DATA
232
TUNER KEY
RS
RXD
/
CLOCK
232
EXT SEL
AMP ALC
EX AUDIO
AMP CONTROL
J
2
G
E
F
C
D
B
A
+
VDC
12
AMP PTT
GND
CLOCK
DATA
H
EXT SEL
AMP ALC
L
6
L
3
L
5
L
2
L
7
L
4
L
8
L
9
L
10
L
1
L
15
L
14
L
13
L
10
L
12
L
11
DC IN
DC OUT
TUNER CONTROL
J
5
J
4
J
3
C
D
B
A
B
A
TUNE INITATE
+
VDC
12
GND
RS
RXD
232
GND
GND
PRIMARY DC INPUT
RA
DC POWER
100
KEY
ATU TX
ATU RX
RS
TXD
232
SW DC OUT
L
17
L
20
L
19
L
18
J
5
J
6
J
8
J
7
1
2
3
4
5
6
7
8
9
10
JUMPER
12
VDC
VOL
-
HI
VOL
-
W
VOL
-
LO
PTT
AUDIO OUT
AUDIO IN
N
/
C
N
/
C
+
V IN
12
+
V OUT
12
+
V OUT
12
+
V OUT
12
1
2
3
4
5
6
7
DC IN
GND
DC OUT
J
9
1
2
3
4
5
6
7
8
RS
TXD
/
DATA
232
RS
TXD
/
CLOCK
232
EXT AMP SEL IN
EXT AMP SEL OUT
DATA
(
TO AMP
)
N
/
C
AMP PTT
CLOCK
(
TO AMP
)
J
10
1
2
3
4
5
6
RS
TXD
232-
RS
RXD
232-
ATU RX
ATU TX
N
/
C
N
/
C
SPKR ON
PWR ON
OFF
H
E
F
C
K
J
D
L
B
A
C
B
A
3
2
1
JUMPER
LS
1
S A
1
S B
1
MT
AMPLIFIER
BOARD
1099
FRONT
PANEL
VOLUME
ADJUST
R
1
Figure 4-9
MT-1099A-12
Schematic Diagram
(994005 Rev. J)
4-13
MT1099A-MS