1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
D
D
C
C
B
B
A
A
VAN
VAN
50mV - 10VPP
50dB
VAN
1.2VPP
C
DECODER_2
DECODER_1
DTMF
DECODER
IN SYSTEM
SERIAL PROGR.
3.3V
VAN
50mV - 10VPP
50dB
VAN
1.2VPP
TX_A
TX_A
LINE_IN_A
LINE_IN_B
LINE_IN_A
LINE_IN_B
M_LEAD_N/O
WIPER
N/C
TX_600_Ohm_OUT_A
TX_600_Ohm_OUT_B
PTT_OPEN_COLLECTOR
RING
HOOK
12V
EXT_MIC_HI
MIC_MUTE
VALIDATE
SPKR_MIC_TELCO_DRIVER
SPKR_MIC_TELCO_DRIVER
TAPE_RECORD/PROG OUT
DECODER_1
DECODER_2
12V
12V
COR/COS_IN_UED
COR/COS_IN_UED
E_LEAD_2
4-WIRE OPTION - RX IN
VALIDATE/ALARM INPUT
VALIDATE/ALARM INPUT
SPEAKER_ENABLE
AGC
AGC
EXT_MIC_PTT_DISPTACH
EXT_MIC_PTT_DISPTACH
EXT_MIC_PTT_2
EXT_MIC_PTT_1
EXT_MIC_PTT_1
EXT_MIC_PTT_2
VAN
TX_B
TX_A
TX_B
SPKR_MIC_TELCO_DRIVER
TX_A
TX_B
TX_B
12V
12V
3.3V
5V
12V
DECODER_1
ENABLE_1
ENABLE_2
ENABLE_1
ENABLE_2
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
3.3V
3.3V
3.3V
GUARD_TONE
GUARD_TONE
3.3V
3.3V
5V
RX_IN_2
5V
CHASSIS GND
J5
(MULTITURN)
SQUELCH_NOISE
SQUELCH_NOISE
12V
5V
12V
VAN
VAN
VAN
RX_IN_3
RX_IN_3
SPKR_OPT_2
RX_IN_2
RX_IN_2
RX_IN_3
ENABLE_1
NOTE:
J3:1 -
PR-10 : VALIDATE INPUT
VAE-10 : ALARM INPUT
IS-2 : NOT CONNECTED
POTS OPTION
OPTIONAL 4-WIRE TX LINE DRIVER/NOTCH FILTER
SPEAKER MIC OPTION
5V
0R
R33
*
C12
0R
R64
3.3K
R58
.001u
C154
.001u
C153
.068u
C150
.047u
C30
.0047u
C29
.01u
C10
.01u
C35
.0047u
C31
.047u
C34
.068u
C151
1u
C16
750K
R80
30K
R94
NOTCH FILTER REMOVES 2175Hz FROM VOICE
2175Hz
TIP
1
RING
2
X
M
IT
(-
)
9
RCV
8
V
C
C
1
0
G
N
D
1
2
RI
5
OFFHK
4
XMIT(+)
11
D
/V
6
PSQ
7
*
U10
SPKR_OPT_1
1M
R113
47K
R126
BSS
Q22
BSS
Q19
BSS
Q20
120K
R169
10K
R86
1M
R107
47K
R72
BSS
Q13
BSS
Q3
BSS
Q12
120K
R97
10K
R65
RX_IN_1
SB1
D24
5V
*
R122
*
R85
*
Q16
*
Q14
*
Q15
*
R129
*
R74
*
*
D9
*
R10
RED
CH_ACQ1
D1
470R
R5
470R
R4
YEL
COR_1
D6
5V
*
R112
*
R99
*
Q21
*
Q17
*
Q18
*
R153
*
R76
*
R11
*
*
D10
)
JP20:1
JP20:2
JP20:3
JP21:3
JP21:2
)
JP21:1
*
R105
100p
C92
560p
C93
1K
R141
10K
R39
200K
R44
33K
R48
1K
R59
100K
R43
200K
R60
1K
R52
2.2u
C36
47K
R51
TP19
JP22:1
JP22:2
JP23:1
*
*
D11
*
R12
100K
R135
560p
C79
JP22:3
JP23:2
JP23:3
SB1
D20
0R
R32
COR_2_HFSN
COR_2_HFSN
0R
RJ8
1K
R143
560p
C94
100p
C95
*
R108
2.2u
C106
560p
C108
100p
C109
10K
R26
200K
R40
100R
R115
E_LEAD_2
22K
R87
1.8K
R88
.012u
C133
24K
R148
RX_IN_1
RX_IN_1
OPTIONAL UED-1 2 TONE/5 TONE DECODER
-
+
2
3
1
4
1
1
LMV324
U8:1
-
+
6
5
7
LMV324
U8:2
-
+
9
10
8
LMV324
U8:3
-
+
13
12
14
LMV324
U8:4
-
+
2
3
1
4
1
1
LMV324
U5:1
-
+
9
10
8
LMV324
U5:3
-
+
6
5
7
LMV324
U5:2
-
+
13
12
14
LMV324
U5:4
NORMAL H-PASS NOISE SQUELCH FILTER
OPTIONAL BANDPASS/LO-PASS FILTER
0R
RJ18
0R
RJ23
560p
C13
2175Hz
+
_
+
_
+
_
+
_
.47u
C26
1
2
JP6
REMOVE JP6 WHEN USING
HF SQUELCH NOISE IN
2.7K
RC1
--I I--
220p
RC3
/\
\/
/\
\/
150K
RC2
--I I--
.001u
RC5
/\
\/
/\
\/
15K
RC4
/\
\/
/\
\/
82K
RC6
100p
C149
27K
R81
100p
C144
470K
R77
.1u
C52
/\
\/
/\
\/
27K
RC8
.1u
C74
TP30
*
R54
2.2u
C75
100K
R152
*
D17
*
R45
4.7K
R55
OPTIONAL IN/OUT
PAD2
*
R66
0R
R16
2.7K
R62
*
R61
3.3K
R56
3.3K
R150
.015u
C40
.015u
C127
.0047u
C128
TP31
1K
R151
TP1
TRANSPOND
SELECT REPEAT MODE
P1:1
12V
RED
P1:2
COR/COS IN UED
P1:3
GROUND
BLACK
P1:4
ALERT TONE
BLUE
P1:5
RX TONE IN
ORANGE
P1:6
MON/SQ OUT
P1:7
MIC MUTE
P1:8
PTT OUT
P1:9
HORN/SCAN/DISABLE
GRAY/WHITE
P1:10
PTT IN
P1:11
PROG IN
ORANGE/WHITE
P1:12
EMERGENCY IN
P1:13
TP2
TP3
TP4
TP5
TP6
TP7
TP9
TP8
5V
100K
R123
TP11
*
RJ1
TP10
TP12
P
2
:5
P
2
:4
P
2
:3
P
2
:2
P
2
:1
3
2
K
H
z
Y1
12p
C39
100p
C37
*
R36
47K
R15
47K
R19
DEBUG
TP34
TP35
TP36
SB1
D16
*
D13
SB1
D15
SB1
D14
47K
R23
0R
R18
.1u
C15
*
R27
*
C25
10K
R3
2
5
1
4
3
MONITOR
RECORD
PROG
J8
100p
C1
0R
R182
47K
R47
.01u
C33
TP18
100K
R82
SB1
D19
3.3K
R46
TP17
3.3K
R41
.012u
C21
3.3K
R42
.015u
C32
.0047u
C28
.1u
C27
1K
R50
*
R156
1
1
3
3
2
2
*
RP2
*
R157
*
R155
*
R162
.1u
C132
*
R166
-
+
13
12
14
LM660
U12:4
-
+
2
3
1
4
1
1
LM660
U12:1
-
+
9
10
8
LM660
U12:3
-
+
6
5
7
LM660
U12:2
*
R161
*
R159
*
R170
*
R164
*
R160
*
R168
.47u
C143
220K
R177
*
R175
47K
R181
10K1%
R165
10K
R178
*
R158
*
R167
*
R173
*
R163
*
R171
47K
R172
.001u
C131
10K1%
R176
11
33
22
*
RP3
2.2u
C96
560p
C99
100p
C98
G
S
D
5460
Q4
10K
R53
.022u
C152
100p
C97
100p
C103
4.7u
C38
1
2
)
IMPEDANCE
JUMPER
JP9
47K
R134
100p
C104
560p
C105
.001u
C101
100p
C100
560p
C102
0R
R136
*
R138
*
R106
TP26
.001u
C82
100p
C84
560p
C83
4001
D32
SQUELCH NOISE IN
*
J2:1
EXT ENABLE
J2:2
MIC AUDIO
J2:3
GROUND
J2:4
COR/COS
J2:5
13.6V EXT B+
J2:6
PTT OUT
J2:7
SPEAKER-
J2:8
J2:9
LTR DELAY
J2:10
J2:11
J2:12
RADIO 2
RJ45-10
100p
C22
560p
C17
TP14
2R
R28
.001u
C19
100p
C24
560p
C20
TP13
2.2u
C14
IN1
1
ENA
3
G
N
D
2
R
E
S
4
OUT
5
MIC5206 3.3V
U4
10K
R25
10K
R24
10K
R38
*
R37
0R
R35
TP33
.001u
C6
100p
C5
560p
C7
2.2u
C8
0R
R13
IN
1
G
N
D
2
OUT
3
LM7805
U1
.001u
C18
100p
C4
560p
C3
2.2u
C2
RED
PWR
D4
1K
R1
.001u
C140
100p
C135
560p
C136
2.2u
C137
IN
1
G
N
D
2
OUT
3
2940A
U13
0R
R180
TP16
2
1
3
EXT PWR
J1
4001
D34
4001
D33
.001u
C85
100p
C87
560p
C86
47K
R20
100K
R30
200K
R17
4.7u
C11
1K
R22
10K
R14
2.2u
C9
33K
R29
1K
R21
TP15
100p
C112
100p
C107
.001u
C113
100p
C111
560p
C110
*
R140
*
R109
TP27
0R
R139
100p
C114
560p
C115
1
2
)
IMPEDANCE
JUMPER
JP11
47K
R103
560p
C80
100K
R137
GRN
PTT_1
D5
470R
R2
SB1
D29
100p
C116
SEE NOTE
BELOW
RADIO 1
RJ45-10
J3:1
EXT ENABLE
J3:2
MIC AUDIO
J3:3
GROUND
J3:4
COR/COS
J3:5
13.6V EXT B+
J3:6
PTT OUT
J3:7
SPEAKER-
J3:8
J3:9
LTR DELAY
J3:10
J3:11
J3:12
TP37
TP38
POTS OPTION
J6:1
YEL
J6:2
GRN
J6:3
RED
J6:4
BLK
J6:5
J6:6
J6:7J6:8
*
2KV
C126
*
2KV
C125
150R
L5
150R
L6
*
RESETTABLE FUSE
F6
*
RESETTABLE FUSE
F5
*
TZ6
*
TZ5
1u
C78
1K
R125
1K
R120
1K
R119
1K
R121
.47u
C70
.47u
C69
.47u
C71
.47u
C72
0R
C61
0R
R102
*
R101
.47u
C60
4.7K
R100
YEL
RING
D7
YEL
HOOK
D2
470R
R6
*
2KV
C123
*
2KV
C90
*
L1
*
L2
*
RESETTABLE FUSE
F1
*
RESETTABLE FUSE
F2
*
TZ1
*
TZ2
*
R130
*
R131
*
C76
*
R132
SB1
D28
SB1
D27
100K
R83
5V
100K
R78
1
2
3
4
5
6
T2:1
7
8
GND
T2:2
100p
C122
100p
C119
*
R127
4.7K
R149
5.6K
R144
1u
C81
100p
C121
4001
Q11
.47u
C91
100K
R146
SB1
D31
100p
C120
100p
C118
100p
C117
.0022u
C141
200K
R124
2R
R147
4.7u
C88
1u
C73
.0022u
C142
2.2u
C64
200K
R111
.47u
C66
.47u
C67
.47u
C68
.47u
C65
100K
R114
IN+
3
IN-
4
SD
1
BYP
2
VO+
5
VO-
8
GND
7
V
D
D
6
TH
9
TPA6203
U11
100K
R142
*
C42
.47u
C41
470K
R70
470K
R71
470K
R69
.47u
C53
470K
R84
TP20
TP28
TP29
PAD6
100K
R57
100K
R63
BSS
Q7
RED
DTMF
D8
470K
R67
SD1
D18
1.2M
R68
.1u
C46
22p
C50
22p
C51
4.7M
R79
3.58 MHz
Y2
.47u
C47
100K
R75
*
R73
OPTIONAL
PAD3
Q1
12
Q2
13
Q4
15
Q3
14
IN+
1
GS
3
VRef
4
IN
H
5
ESt
18
IN-
2
P
W
D
N
6
StD
17
O
S
C
2
9
O
S
C
1
8
TOE
11
V
S
S
1
0
St/GT
19
VDD
20
NC1
7
NC2
16
8870
U7
470R
R8
GREEN
RELAY
D3
4.7K
R128
B25
Q8
TP21
SD1
D30
JP7:2
)
JP7:1
JP7:3
.47u
C57
*
R154
300R
R90
1
2
3
4
5
6
T1:1
7
8
GND
T1:2
-
+
6
5
7
TLC272
U9:2
-
+
2
3
1
8
4
TLC272
U9:1
10K1%
R91
10K1%
R93
36K
R96
0R
R89
*
C56
.47u
C134
*
C55
11
33
22
100K
RP1
TP25
300R
R98
*
TZ3
*
TZ4
*
2KV
C124
150R
L3
*
RESETTABLE FUSE
F4
*
2KV
C89
150R
L4
*
RESETTABLE FUSE
F3
MODE IN
J4:1
J4:2
EXT MIC HI
J4:3
EXT MIC GND
J4:4
NU
J4:5
EXT MIC PWR
J4:6
PTT
J4:7
SPEAKER-
J4:8
J4:9
NU
J4:10
J4:11
J4:12
*
C77
B25
Q1
G
S
D
5460
Q2
B25
Q5
B25
Q6
4001
Q9
4001
Q10
0R
RJ9
TP32
P
1
-3
1
6
P5-1
13
V
D
D
4
2
P3-1
11
P3-5
9
P4-5
4
P4-7
3
P2-6
37
P3-7
8
P2-7
47
P3-6
28
P5-2
24
P3-4
27
P1-2
20
VSS
18
P
2
-4
_
A
R
E
F
3
6
P0-7
43
TXI
TXI
P0-1
46
RXI
RXI
P2-5
48
P0-3
45
P0-6
41
P4-1
6
P0-5
44
P2-3
1
P2-1
2
P0-0
38
P0-4
40
RXO
RXO
P0-2
39
TXO
TXO
P2-0
34
P1-4
21
P1-6
22
SMP
7
P2-2
35
P1-1
17
P1-0
19
XRES
29
P3-0
25
P5-0
23
P3-2
26
P5-3
12
P3-3
10
P4-3
5
P1-5
15
P1-7
14
P4-6
33
P4-4
32
P4-0
30
P4-2
31
PAD
0
U6
CP
CJS
2010-04-26
DML
2014-04-03
F-4
1 of 1
7705
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
DWN BY:
REV:
APPR
COPYRIGHT ©
REV
SHEET
PROJECT NUMBER
DOCUMENT NAME
SCHEMATIC
2014
PUBLIC ADDRESS RADIO/TELEPHONE INTERFACE
PARTI-1
GND1
GND2
GND3
10
1
+
-
M LEAD RELAY
K1:1
3
2
4
K1:2
8
9
7
K1:3
1
2
)
JP15
1
2
)
JP14
JP
8
:2
JP
8
:1
JP
8
:3
PA
0R
RJ11
0R
RJ12
*
RJ4
*
RJ5
*
RJ2
*
RJ3
TP24
TP22
TP23
E LEAD
J7:1
GND
J7:2
PTT OC
J7:3
PA OUT A
J7:4
UNBAL OUT
J7:5
GND
J7:6
PA OUT B
J7:7
ALL CALL
J7:8
WIPER
J7:9
N/C
J7:10
J7:11
J7:12
1
2
JP1
*
RJ7_21
*
RJ7_23
5V
12V
10K
R192
10K
R193
1u
C155
VAN6V
VAN6V
VAN6V
VAN6V
VAN6V
VAN6V
1u
C156
1u
C157
1
2
)
JP12
3
4
5
6
1
2
)
JP10
3
4
5
6
JP5:1
JP5:2
JP5:3
JP5:4
1
2
JP13
3
4
5
6
JP4:1
JP4:2
JP4:3
JP4:4
)
JP16:1
JP16:2
JP16:3
)
JP3:1
JP3:2
JP3:3
470R
R9
1K
R191
2
DN
3
UP
1
SW1
*
C130
*
C129
SPKR_OPT_1
SPKR_OPT_2
SPKR_MIC_TELCO_DRIVER
0R
RJ24
0R
RJ25
CS
1
SO
2
SI
5
SCK
6
VCC
8
HOLD
7
WP
3
GND
4
25VF016
U2
CS
1
SO
2
SI
5
SCK
6
VCC
8
HOLD
7
NC
3
GND
4
*
U3
*
RJ6
*
RJ7
0R
RJ10
1K
R186
SB1
D35
SB1
D36
*
D37
*
D38
SQUELCH_NOISE
*
RJ26
X
1
1
X
2
2
Vbackup
3
CS
4
G
N
D
5
DIN
6
DOUT
7
SCLK
8
SQW/INT
9
V
C
C
1
0
*
U14
*
Y3
*
C158
5V
*
RJ28
*
R197
*
R199
*
R198
11
33
22
*
RP4
1.8V
*
C159
*
C160
*
R195
*
R196
1.8V
A1
2
G
N
D
4
V
C
C
A
1
B1
7
V
C
C
B
8
A2
3
D
IR
5
B2
6
*
U17
A1
2
G
N
D
4
V
C
C
A
1
B1
7
V
C
C
B
8
A2
3
D
IR
5
B2
6
*
U18
5V
3.3V
5V
1.8V
1A
2
G
N
D
4
1OE
1
2OE
7
V
C
C
8
1B
3
2A
5
2B
6
*
U21
1A
2
G
N
D
4
1OE
1
2OE
7
V
C
C
8
1B
3
2A
5
2B
6
*
U19
1A
2
G
N
D
4
1OE
1
2OE
7
V
C
C
8
1B
3
2A
5
2B
6
*
U20
GPIO01
1
GPIO02
2
GPIO03
3
GPIO04
4
GPIO05
5
GPIO06
6
G
N
D
7
V
C
C
8
BOOT
9
RESET
10
CTS
11
RTS
12
RXD
13
TXD
14
LPO
15
GPIO07
16
*
U16
5V
5V
5V
*
R202
*
R203
*
R204
*
R205
5V
5V
*
R201
5V
RTS
CTS
P1_7
P1_5
P1_7
P1_5
PROG_IN
PROG_OUT
PROG_IN
PROG_OUT
0R
R200
BT_SEL
BT_SEL
RTC_INT
*
RJ27
RTC_INT
5V
0R
RJ29
0R
RJ30
RTS
CTS
3.3V
100K
R206
PROG IN
TP45
P3:1
P3:2
P3:3
P3:4
P3:5
P3:6
P3:7
P3:8
P3:9
P3:10
*
COIN 3V
BAT1
BSS
Q24
P2
Q23
100K
R207
5V
*
R208
1K
R7
*
C161
*
R209
5V
*
C162
*
R210
5V
*
C163
*
R211
5V
*
C164
*
R212
5V
*
Q25
IN2
7
NC
4
IN1
8
OUT2
2
G
N
D
5
OUT1
1
S
D
6
FB
3
*
U15
FOR PARTI ONLY
LINE_IN_A
UNBALANCED OUT
10K
R116
10K
R117
10K
R118
10K
R110
47K
R145
10u
C23
--I
680p
RC7
30K
R95
*
D40
*
D41
18V
D42
18V
D43
.47u
C63
.47u
C62
1K
R188
1K
R187
330R
R104
330R
R133
2.2u
C54
1K
R31
1K
R49
10K
R174
10K
R92
