Midland 4001 Schematic
5
SW 8V
D107
D107
1S1555
GNDGND
LED DISPLAYLED DISPLAY
ALL RESISTORS 1K
CHANNEL
D D
SWITCH
1S1555
2424
1
20
P1
T/R
2323
2
P2
2222
3
19
P3
FIN
2121
4
P4
2020
5
18
P5
VCC
1919
6
P6
7
17
TEST
AO
8
CH19
9
16
CH9
AI
10
MC
15
PD
14
LD
13
GND
C202
C202
10n
10n
LC7137A
LC7137A
12
RO
11
RI
IC102
IC102
C205
C205
35p
35p
C200
C200
10n
10n
R152
R152
10K
10K
R154 2K2R154 2K2
C203
C203
27p
27p
C198
C198
33p
33p
10.240Mhz
10.240Mhz
4
PLL8V
C201
C201
10n
10n
GNDGND
R153
R153
33K
33K
C1991uC199
X101
X101
C204
C204
56p
56p
R1551KR155
1u
1K
R156
R156
150K
150K
C1135pC113
5p
C211
C211
Q113
Q113
27p
27p
MPS9426
MPS9426
C206
C206
20p
20p
C2105pC210
5p
C214
C214
C213
C213
10n
10n
10u
10u
GNDGND
L116
L116
340-108
340-108
C212
C212
120p
120p
TP1WTP1
C219
C219
27p
27p
W
R160
R160
R158
R158
R157
R157
4K7
4K7
22K
22K
100K
100K
D109
D109
C209
C209
C208
C208
68n
68n
MV2209
MV2209
22n
22n
R163
R163
100K
100K
MV2209
MV2209
3
C121
C121
10n
10n
L107
L107
340-1D9
R159
R159
47K
47K
C215
C215
27p
27p
C2185pC218
5p
C221
C221
33p
33p
D110
D110
Q115
Q115
MPS9246
MPS9246
C223
C223
10n
10n
8V
R161
R161
220K
220K
Q114
Q114
MPS9246
MPS9246
C217
C217
220p
220p
R162
R162
C216
C216
2K7
2K7
120p
120p
R164
R164
3K3
3K3
340-1D9
R135
R135
150K
150K
Q109
Q109
MPS9246
MPS9246
C195
C195
R136
R136
10n
10n
390R
390R
TX8V
GNDGND
C193
C193
15p
15p
L109
L109
340-1D9
340-1D9
C194
C194
82p
82p
2
TX8V
R140
R140
100R
100R
C190
C190
C191
C191
10n
10n
10n
10n
R139
R139
4K7
4K7
R138
R138
4K7
4K7
R137
R137
2K7
2K7
GNDGND
L108
L108
GNDGND
340-014A
340-014A
C229
C229
100p
100p
(MIC)
(MIC)
Q110
Q110
MPS9246
MPS9246
R141
R141
68R
68R
R142
R142
68R
68R
C235
C235
10n
10n
R144
R144
10R
10R
1W
1W
C192
C192
10n
10n
GNDGND
R1431KR143
L126
L126
1K
1uH
1uH
C189
C189
330p
330p
2SC2314
2SC2314
C167
C167
60p
60p
L110
L110
Q111
Q111
340-015
340-015
C168
C168
220p
220p
RF POWER SWITCH
RF POWER SWITCH
LOW POWER
LOW POWER
L123
L123
6u8
6u8
R146
R146
68R
68R
13.8V
SW4
SW4
R145
R145
470R
470R
RV102
RV102
500R
500R
GND
R148
R148
L124
L124
1K2
1K2
0.5uH
0.5uH
C161
C161
100p
100p
R147
R147
4R7
4R7
1/2W
1/2W
C166
C166
560p
560p
C162
C162
100p
100p
(MIC)
(MIC)
2SC2078
2SC2078
L111L111
L112
L112
0.2uH
0.2uH
C164
C164
Q112
Q112
180p
180p
C159
C159
27p
27p
1
R401
R401
RV401
RV401
1R
1R
2K2
2K2
2W
2W
C106
C106
47n
47n
3232
3131
R403
R403
Q401
Q401
2K7
2K7
AWI
BOARD
C165
C165
180p
180p
(MIC)
(MIC)
C1581pC158
AWI
2SA562
2SA562
CIRCUIT
3333
R404
R404
D305
R406
R406
2K7
2K7
GG
L113
L113
0.5uH
0.5uH
C172
C172
180p
180p
(MIC)
(MIC)
R196
R196
47K
47K
1p
D305
820R
820R
AWI LED
AWI LED
GNDGND
L115L115
PL259PL259
C301
C301
120p
120p
C169
C169
80p
80p
(MIC)
(MIC)
CHASSISGND GND
RX8V
C105
C105
C108
C108
47n
47n
10u
10u
C104
C104
GNDGND
47n
47n
GNDGND
R101
C C
B B
RF GAIN
RF GAIN
RX8V
T5
C1013
C1013
10n
10n
R113
R113
R108
R108
22K
22K
15K
LO
LO
VR3
VR3
10K
10K
LOCAL / DX SWITCH
LOCAL / DX SWITCH
DX
DX
15K
2626
C120
C120
10n
10n
GG
MIC GAIN
MIC GAIN
MIC SKTMIC SKT
1
23
C305
C305
10n
10n
MPS9426
MPS9426
C118
C118
10n
10n
R107
R107
22K
22K
MIC AUDIO
1515
CB
CB
PA
PA
VR4
VR4
SW2(B)
SW2(B)
10K
10K
4
C307
C307
C306
C306
10n
10n
10n
10n
T5
340-111
340-111
GREEN
GREEN
C116
D101
D101
1S1555
1S1555
Q104
Q104
D102D102
C116
R185
R185
820R
820R
C117
C117
10n
10n
L202
L202
1414
22uH
22uH
R181
R181
1K2
1K2
R180
R180
10K
10K
R182
R182
6K8
6K8
1515
MIC GROUND IN TX
R101
2K2
2K2
47p
47p
C102
C102
10n
10n
C10141nC1014
1n
D115
D115
1N4148
1N4148
C175
C175
47n
47n
R179
R179
4K7
4K7
R104
R104
82K
82K
C101
C101
R105
R105
10n
10n
C103
C103
10p
10p
T6
T6
T7
C179
C179
10u
10u
1
340-112
340-112
YELLOW
YELLOW
T7
340-116
340-116
WHITE
WHITE
C178
C178
10n
10n
R175
R175
2K7
2K7
R176
R176
22K
22K
C176
C176
10u
10u
GNDGND
Q101
Q101
MPS9426
MPS9426
R102
R102
18R
18R
C234
C234
4u7
4u7
GNDGND
R178
R178
R177
R177
4K7
4K7
220K
220K
411
2
-
-
3
+
+
IC105A
IC105A
LM324
LM324
C177
C177
47u
47u
13.8V
ON/OFF
ON/OFF
CH101
CH101
SWITCH
+
1212
A A
13.8 VDC
1111
5
L125
L125
10uH
10uH
C170
C170
10n
10n
D108
D108
1N4003
1N4003
_
SWITCH
99
CHOKE
CHOKE
METER
METER
LAMP
LAMP
C171
C171
10n
10n
1010
11
C156
C156
1000u
1000u
R311
R311
150R
150R
1/2W
1/2W
123
C157
C157
47n
47n
IC103
LM7808
C185
C185
100u
100u
4
8V
R114
R183
R183
470R
470R
C123
C123
C124
2K7
2K7
T8
340-117T8340-117
Q102
Q102
150p
150p
MPS
MPS
9426
9426
C225
C225
Q103
Q103
MPS
MPS
9426
9426
C114
C114
150p
150p
R151
R151
470R
470R
R174
R174
220K
220K
6
-
-
7
5
+
+
IC105B
IC105B
LM324
LM324
R150
R150
R10K
R10K
C241
C241
10n
10n
C184
C184
10n
10n
C115
C115
47n
47n
8V
D111 to D114
ALL DIODES
1N4148
R186
R186
220R
220R
C107
C107
10n
10n
R106
R106
470R
470R
R169
R169
20K
20K
R171
R171
R172
R172
10K
10K
C181
C181
15n
15n
R109
R109
390R
390R
C183
C183
10n
10n
10K
10K
R170
R170
10K
10K
C182
C182
10n
10n
C198
C198
C197
C197
10n
10n
10u
10u
Q105
Q105
MPS9681
MPS9681
R111
R111
R1101KR110
4K7
4K7
1K
1717
C124
10n
10n
100u
100u
CF1
CF1
10.7
10.7
R189
R189
390R
390R
IC105C
IC105C
R191
R191
LM324
LM324
9
8
L122
L122
25uH
25uH
D103
D103
1S1555
1S1555
R10021KR1002
1K
47K
47K
-
-
8
+
+
R168
R168
10K
10K
RV105
RV105
20K
20K
R1011
R1011
10K
10K
C2221nC222
1n
FM MOD (TO VCO)
8V
SW 8V
PLL8V
C236
C236
47n
47n
GNDGND
RX8V
R1831KR183
1K
D117
D117
RX
RX
LED
LED
R114
2K2
2K2
16
Vcc
AMP
AMP
2
1
Vcc
MIX
MIX
3 35678 8
CF2
CF2
455
455
123
C127
C127
68n
68n
C110
C110
10n
10n
C111
C111
27p
27p
RX8V
C243
C243
1616
PA MIC AUDIO
TO SWITCH AND
VOLUME CONTROL
10n
10n
C224
C224
10n
10n
TX8V
3030
R1841KR184
1K
D118
D118
TX
TX
LED
LED
R117
R117
68K
68K
L105
L105
350-
350027
027
4
LIMIT
LIMIT
R115
R115
2K2
2K2
R124
R124
100K
100K
C125
C125
27p
27p
IC101
IC101
MC3357
MC3357
FILTER
FILTER
DEMOD
DEMOD
AMP
AMP
9
10
111415
R1121MR112
1M
C1321nC132
C128
C128
1n
C134
C134
C1311nC131
10p
10p
R116
R116
4K7
4K7
C135
C135
10p
10p
C126
C126
68n
68n
R118
R118
470R
470R
R1020
R1020
2K2
2K2
C2271nC227
1n
Q107
Q107
MPS9623
MPS9623
470n
470n
1n
R1007
R1007
39K
39K
C238 470nC238 470n
R120
R120
R131
R131
7K5
7K5
10K
10K
10n
10n
68n
68n
C139
C139
C133
C133
C136
C136
R1261KR126
10n
10n
1K
R125
R125
C2281nC228
100K
100K
1n
D1013
D1013
Q108
Q108
1N60
1N60
MPS9623
MPS9623
MIDLAND 4001
3
R122
R122
10K
10K
D116
D116
MA150
MA150
13
SQUELCH
SQUELCH
TRIGGER
TRIGGER
12
D104
D104
R123
R123
D1001
D1001
1S34
1S34
100K
100K
1S34
1S34
C1371uC137
R1009
R1009
1u
90K
90K
R1006
R1006
1K2
1K2
R128
R128
4K7
4K7
D105
D105
1N60
1N60
C10021uC1002
1u
C226
C226
10n
10n
GNDGND
2727
R1004
R1004
SQUELCH
SQUELCH
2828
56K
56K
VR2
VR2
10K
10K
2929
RV101
RV101
C129
C129
10n
10n
R1491KR149
1K
2K2
2K2
SQUELCH
SQUELCH
PRESET
PRESET
D106
D106
1N60
1N60
RV103
RV103
20K
20K
RF METER
RF METER
C155
C155
10n
10n
Q112
Q111
L108L108
Q110
L107L107
Q109
Q115
L116
L116
Q114
VCO
VCO
D109
1616
PA MIC
AUDIO
MM
GNDGND
METERMETER
L110L110
Q104
L109L109
Q101
T6T6
T7T7
D110
Q105
Q102
Q103
T8T8
Q113
X101
IC102
2
PA
PA
22
CB
CB
C250
C250
VOLUME
VOLUME
10n
10n
FIL.1
FIL.1
IN
IN
OUT
OUT
DO NOT
ADJUST
L111L111
L115L115
RV103
RF
METER
T5T5
RV105
Q108
FM
DEV
Q107
RV101
SQUELCH
CF1
IC101
CF2
13.8V
C150
C150
68p
SW2(A)
SW2(A)
VR1
VR1
50K
50K
GNDGND
SPKR
D108
IC 105
68p
GNDGND
R132
R132
820R
820R
C1421uC142
33
1u
R133
R133
330R
330R
C143
C143
2n2
2n2
EXT
PA
SPKR
CH
101
IC104
IC103
L105L105
C154
C154
68n
68n
C149
C149
180p
180p
4
5
6
IC1
TA7205P
7
3
C151
C151
33u
33u
C148
C148
4u7
4u7
C146
C146
C147
C147
220u
220u
47u
47u
1
2
10
8
9
C141
C141
C144
C144
220p
220p
68n
68n
C152
C152
10n
10n
C153
C153
10n
10n
GNDGND
R134
R134
4R7
4R7
2W
2W
Size Document Number Rev
Size Document Number Rev
Size Document Number Rev
D
MIDLAND 4001.SCH
D
MIDLAND 4001.SCH
D
MIDLAND 4001.SCH
Date: Sheet
Date: Sheet
Date: Sheet
1
L120
L120
0.8uH
0.8uH
P.A. SPKRP.A. SPKR
C145
C145
L118
L118
10n
10n
0.8uH
0.8uH
EXT SPKREXT SPKR
L121
L121
0.8uH
0.8uH
Draw By: Rick Jackson (Euro Radio Co).
Draw By: Rick Jackson (Euro Radio Co).
Draw By: Rick Jackson (Euro Radio Co).
55
88
44
77
66
SW2(C)
SW2(C)
L201
L201
22uH
22uH
TO PIN 3 MIC SOCKETTO PIN 3 MIC SOCKET
11Wednesday, February 21, 2007
11Wednesday, February 21, 2007
11Wednesday, February 21, 2007
PA
PA
CB
CB
SPEAKERSPEAKER
of
of
of
1.0
1.0
1.0
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