Uniden 400 PC404 Schematic
8
R Jackson
Euro Radio Co
PA - 198
1/2 WATT
1/2 WATT
CHANNEL DISPLAYCHANNEL DISPLAY
TR16
TR16
2SC2236
2SC2236
R124
R124
47R
47R
DISPLAY
SWITCH
R90
R90
5K6
5K6
R92
R92
5K6
5K6
NOTE:
C115
C115
All Transistor and IC voltages are ± 2%.
10u
10u
All Voltages taken with Fluke 89 IV.
D D
CB 13.8V
ALWAYS 8.8V
DIMMER SWITCH
© Euro Radio Co
TR501
L11L11
C C
TR9
L18L18
B B
A A
R111
R111
2K2
2K2
C129
C129
47n
47n
R81
R81
33K
33K
L27L27
L15L15
L16L16
L17L17
L4L4
IC2
TA7310P
MIXER
o
L20L20
L19L19
o
IC3
TC9106P PLL
TX 8.6V
R109
R109
27K
27K
R110
R110
33K
33K
C130
C130
10u
10u
C1281nC128
1n
L1L1
L2L2
VR2
VR2
S METER
VR1
VR1
SQUELCH
SQUELCH
S METER
VR3
VR3
RF METER
RF METER
L3L3
© Euro Radio Co
L5L5
VR4
VR4
DEVIATION
DEVIATION
3
4
-
-
+
+
5 1
IC4A
IC4A
NJM4558S
NJM4558S
C127
C127
150p
150p
R108
R108
820K
820K
L7L7
L6L6
o
IC1
TA7130P
FM IF AMP
IC4 A & B
Pin 1 = 8.8 VDC
Pin 2 = 4.8 VDC
Pin 3 = 2.2 VDC
Pin 4 = 4.5 VDC
Pin 5 = GROUND
Pin 6 = 3.5 VDC IN TX
Pin 7 = 4.3 VDC IN TX
Pin 8 = 4.3 VDC IN TX
Pin 9 = 8.8 VDC
All voltages ± 2%
D17
D17
1S2075
1S2075
2
C125
C125
2u2
2u2
R103
R103
R102
R102
47K
47K
270R
270R
R101
R101
8K2
8K2
1S2075
1S2075
R100
R100
330R
330R
8
R301 to R312
ARE ALL 680R
D16
D16
C124
C124
4u7
4u7
R313
330R
R98
R98
47K
47K
FROM TR30
ALWAYS 8.8V
CHANNEL
SWITCH
MOD METER
MOD METER
ALWAYS 8.8V
R97
R97
10K
10K
R99
R99
47K
47K
7
R79
R79
33R
33R
C91
C91
10n
10n
R62
R62
4K7
4K7
C77
C77
2u2
IC3
IC3
10
FIN9P0
11
R/T
P1
12
AO
P2
13
P3
14
PD
P4
15
LD
P5
16
CL
P6
17
P7
18
VCC
GND
TC9106P
TC9106P
J3J4
EXT SPPA
2u2
8
7
6
AI
5
4
3
2
RI
1
C79
C79
.22u
.22u
R65
R65
10K
10K
T1
o
IC501
MB3712
AUDIO AMP
VR5
VR5
D9
1S2075D91S2075
RX 8.6V
VR351
VR351
50K
50K
SQUELCH
SQUELCH
PART OF PA - 199
C118
C118
15n
15n
C117
C117
R107
R107
9
4u7
4u7
10K
10K
-
-
C119
C119
7
68n
68n
8
+
+
6
R96
R96
R95
R95
12K
12K
10K
10K
C123
C123
C122
C122
15n
15n
680p
680p
7
IC4B
IC4B
NJM4558S
NJM4558S
R941KR94
1K
C116
C116
47n
47n
C92
C92
470u
470u
R63
R63
4K7
4K7
R23
R23
39K
39K
C1261uC126
1u
R93
R93
68R
68R
6
C93
C93
10n
10n
C78
C78
2u2
2u2
2SC945
2SC945
R64
R64
2K2
2K2
C81
C81
22p
22p
C80
C80
47p
47p
TP1TP1
RX 8.6V
VR354
VR354
1K
1K
RF GAIN
RF GAIN
10.2400 MHz REFERENCE OSCILLATOR
ALWAYS 8.8V
LOCK DECTECTOR
VR1
VR1
100K
100K
SQUELCH
SQUELCH
PRESET
PRESET
R555
R555
47K
47K
330K
330K
VR4
VR4
300R
300R
DEVIATION
DEVIATION
C74
C74
10u
10u
6
C156
C156
47n
47n
TR16
TR16
OSC
OSC
1N60
1N60
R58
R58
5K6
5K6
R56
R56
R66
R66
2K7
2K7
D10
D10
R55
R55
220K
220K
C84
C84
47n
47n
R68
R68
82K
82K
C83
C83
390p
390p
C82
C82
150p
150p
C87
C87
100n
100n
R1
33KR133K
C35
C35
4u7
4u7
R541MR54
1M
SQUELCH AMP
SQUELCH AMP
TR12
B = 0.2 / 0.5 VDC
C = 1.2 / 0.1 VDC
E = 0.0 / 0.0 VDC
Squelch Min / Max
C751uC75
1u
TR13
TR13
2SC945
2SC945
D5
1S2075D51S2075
R57
R57
470R
470R
2SC945
2SC945
TR1
IN RX MODE
B = 0.8 VDC
C = 0.1 VDC
E = 0.0 VDC
R2
5K6R25K6
TR12
TR12
R67
R67
100R
100R
TR16
B = 5.4 VDC
C = 7.6 VDC
E = 6.2 VDC
10.240 MHzX110.240 MHz
C85
C85
2SC945
2SC945
C1
22uC122u
D6
1S2075D61S2075
X1
39p
39p
R69
R69
22K
22K
R3
470RR3470R
TR1
TR1
TX 8.6V
R52
R52
18K
18K
TR11
B = 0.7 / 0.0 VDC
C = 0.1 / 4.6 VDC
E = 0.0 / 0.0 VDC
Squelch Min / Max
C761uC76
1u
CT1
CT1
20P
20P
C86
C86
470p
470p
R4
1K5R41K5
D1
1S2075D11S2075
R131
R131
100K
100K
R53
R53
10K
10K
C72
C72
4u7
4u7
RX 8.6V
TX 8.6V
2SC941
2SC941
CHASSIS
SQUELCH AMP
SQUELCH AMP
R51
R51
2R2
2R2
VR5
VR5
50K
50K
MOD METER
PRE-SET
TR13
IN TX MODE
B = 1.6 VDC
C = 8.5 VDC
E = 1.1 VDC
TR31
TR31
D11
D11
ISV73
ISV73
MC301D2MC301
D2
R371KR37
1K
C49
C49
2n2
2n2
R50
R50
10K
10K
TR11
TR11
2SC945
2SC945
C88
C88
68p
68p
FM TX AUDIO
C2
10nC210n
C3
10nC310n
R76
R76
10K
10K
TR19
B = 0.0 / 0.7 VDC
C = 0.0 / 0.0 VDC
E = 0.0 / 0.0 VDC
Squelch Min / Max
TO METER
SWITCH
C30
C30
15p
15p
L26
L26
LD164
LD164
MC301D3MC301
2SC945
2SC945
SQUELCH
BUFFER
R106
R106
10K
10K
R105
R105
10K
10K
IS2339
IS2339
L31
L31
LD164
LD164
D3
C100
C100
3n9
3n9
TR19
TR19
C99
C99
22u
22u
R70
R70
100K
100K
C898pC89
8p
D12
D12
C41nC4
1n
AF AMP MUTEAF AMP MUTE
TR17
B = 4.0 VDC
C = 8.2 VDC
E = 4.0 VDC
C90
C90
L19
L19
LA165
LA165
TR2
D = 7.3 VDC
G = 0.0 VDC
S = 2.4 VDC
L1
LA397L1LA397
C51nC5
1n
R5
100KR5100K
SW CB 13.8V
R78
R78
10K
10K
R77
R77
22K
22K
C101
C101
1n5
1n5
R80
R80
220K
220K
R104
R104
4K7
4K7
TR20
TR20
2SC945
2SC945
AF MUTE
5
R71
R71
39K
39K
TR17
TR17
2SC945
2SC945
VCO
VCO
33p
33p
C94
C94
220p
220p
R73
R73
2K2
2K2
R72
R72
56K
56K
VCO OUTPUT
10.2400 MHz REFERENCE OSCILLATOR
TO 1st MIXER
R751KR75
TR18
1K
B = 0.9 VDC
C = 3.1 VDC
E = 1.3 VDC
TR18
TR18
R74
R74
2SC945
2SC945
100K
100K
VCO BUFFER
VCO BUFFER
C961nC96
1n
RX FREQUENCY
Ch 1 = 16.2700 MHz
Ch 40 = 16.7100 MHz
TP3TP3
L20
L20
LA0201
LA0201
C97
C97
10p
10p
C95
C95
100p
100p
C98
C98
10n
10n
R49
R49
100R
100R
C68
C68
10n
10n
C71
C71
33p
33p
TX FREQUENCY
Ch 1 = 16.7250 MHz
Ch 40 = 17.1650 MHz
4
R47
R48
R48
10R
10R
C701pC70
C691pC69
1p
1p
L18
L18
LA373
LA373
IC3
IC3
638
TA7310
TA7310
Vdd
Vdd
1
MIX
MIX
AMP
AMP
Vss
Vss
C152
C152
4
5
2
15p
15p
R97
R97
1K5
1K5
R47
100R
100R
C65
C65
C64
C64
10n
10n
10n
10n
L17
L17
LA374
LA374
C671nC67
1n
7
9
AMP
AMP
D8
1S1555D81S1555
LOCK DETECTORLOCK DETECTOR
UNIDEN 400 MODEL PC- 404
TR3 / TR32
R7
220RR7220R
C8
1p5C81p5
L2
LB336L2LB336
LB420
LB420
TR2
TR2
2SK192
2SK192
RF AMP
RF AMP
D
C7
G
10nC710n
S
R61KR6
C6
1K
10nC610n
D21
D21
1N4003
1N4003
C135
C135
1000u
1000u
2
2
6
6
IC501
IC501
MB3712
MB3712
AF AMP
AF AMP
7
7
C1021nC102
1n
C103
C103
10u
10u
© Euro Radio Co
5
D = 6.5 VDC
G = 0.0 VDC
S = 2.5 VDC
TR32
TR32
2SK192
2SK192
1st MIXER
1st MIXER
L27
L27
D
G
S
D
G
S
TR3
TR3
2SK192
2SK192
1st MIXER
1st MIXER
C9
3u3C93u3
R9
2K2R92K2
IC5
Pin 1 = 6.7 VDC
Pin 2 = 13.8 VDC
Pin 3 = 12.5 VDC
Pin 4 = GROUND
Pin 5 = N/C
Pin 6 = 0.8 VDC
Pin 7 = 0.8 VDC
Pin 8 = 0.8 VDC
R84
R84
56R
56R
345
345
8
8
C104
C104
2n2
2n2
R81
R81
68R
68R
MIC SOCKET
MIC SOCKET
L404
L404
L0099
L0099
C4041nC404
C403
C403
1n
10n
10n
CHASSIS
PA - 106 MIC JACK PCB
R10
R10
220R
220R
D20
D20
1S2075
1S2075
L3
LA395L3LA395
D25
D25
1S2075
1S2075
R132
R132
2K2
2K2
C108
C108
330u
330u
C105
C105
47u
47u
1
1
R82
R82
8K2
8K2
R831RR83
1R
C107
C107
100n
100n
J402
J402
1234
1234
C402
C402
10.7M
10.7M
C11
C11
10n
10n
C153
C153
3u3
3u3
C110
C110
4n7
4n7
C111
C111
4n7
4n7
C113
C113
4n7
4n7
L24
L24
L0033
L0033
C112
C112
4n7
4n7
C114
C114
4n7
4n7
CHASSIS
L401
L401
L0099
L0099
L403
L403
L0099
L0099
C401
C401
10n
10n
10n
10n
L402
L402
L0099
L0099
4
R11
R11
10K
10K
L4
FT1
FT1
L23
L23
L0033
L0033
TR4
LA394L4LA394
B = 0.9 VDC
C = 7.5 VDC
E = 0.8 VDC
C13
C13
TR4
TR4
10n
10n
2SC1675
2SC1675
2nd MIXER
2nd MIXER
C141nC14
1n
L22
L22
L0033
L0033
J4
P.A.J4P.A.
L21
L21
L0033
L0033
J3
EXT SPJ3EXT SP
SP501
SP501
SPEAKER
SPEAKER
13.8 VDC
CHASSIS
VR355
VR355
1K
1K
MIC GAIN
MIC GAIN
PART OF PA - 199
3
C62
C62
10n
10n
RX SIGNAL
L28
L28
LD087
LD087
PRE DRIVER
PRE DRIVER
TR10
IN TX MODE
B = 1.4 VDC
C = 12.5 VDC
E = 1.4 VDC
L15
L15
LA208
LA208
TR10
TR10
2SC945
2SC945
R43
R43
47R
47R
SW PA 13.8V
C50
C50
10n
10n
CHASSIS
R42
R42
15R
15R
C58
C58
10n
10n
2SC2028
2SC2028
DRIVER
DRIVER
L14
L14
LD087
LD087
C56
C56
C60
C60
4n7
4n7
4n7
4n7
CHASSIS
L13
L13
LC130
LC130
C553pC55
3p
C53
C53
220p
220p
TR9
TR9
R40
R40
2R2
2R2
C52
C52
100p
100p
C51
C51
R41
R41
47p
47p
150R
150R
TX 8.6V
C61
C61
2n2
2n2
CHASSIS
L16
L16
LA088
LA088
C631nC63
1n
R45
R45
12R
12R
TP2TP2
R46
R46
R44
R44
10K
10K
2K7
2K7
2
SW CB 13.8V
C73
C73
10n
10n
© Euro Radio Co
L12
L12
LE188
LE188
CHASSIS CHASSIS
C1555pC155
5p
C48
C48
56p
56p
TR501
TR501
2SC2029
2SC2029
FINAL
FINAL
C137
C137
C46
C46
220p
220p
220p
220p
L11
L11
LA398
LA398
C45
C45
220p
220p
LE098
LE098
C47
C47
220p
220p
VR2
VR2
50K
50K
S METER
S METER
1
PA -198
C40
C40
C39
C39
82p
82p
220p
220p
SO259
R38
R38
2K2
2K2
C502
C502
C501
C501
33p
33p
120p
120p
CHASSIS
PART OF PA - 199
MOD
MOD
SW553B
SW553B
METER SWITCH
METER SWITCH
S/RF METER
S/RF METER
SO259
ANT
ANT
S/RF
S/RF
M501
M501
L10
L10
R391KR39
1K
L8
L9
LE096L8LE096
LE093L9LE093
C38
C38
33p
33p
C36
C36
82p
82p
C37
C37
220p
220p
C412pC41
2p
VR3
VR3
50K
50K
RF METER
RF METER
D7
1S2075D71S2075
C42
C42
47n
47n
ALWAYS 8.8V
R26
R26
22K
22K
R33
R33
100R
C261nC26
C22
C22
33n
33n
TR7
B = 2.1 VDC
C = 8.5 VDC
E = 1.6 VDC
100R
TO VR5
C28
C28
C29
C29
22u
22u
33n
TA7130P
TA7130P
33n
L7
LB150L7LB150
5
3
VCC
VCC
7
PEAK
PEAK
DETR
DETR
6
GND
GND
4
IC1
IC1
C31
C31
100p
100p
IC1
Pin 1 = 1.8 VDC
Pin 2 = 1.8 VDC
Pin 3 = 6.8 VDC
Pin 4 = GROUND
Pin 5 = 3.5 VDC
D4
Pin 6 = 3.4 VDC
1N60AD41N60A
Pin 7 = 4.6 VDC
1
R321KR32
L.P.F.
L.P.F.
1K
C23
C23
1n
2
10n
10n
BIAS CCT
BIAS CCT
C27
C27
47n
47n
FM IF AMP
FM IF AMP
PART OF PA - 199
SW553C
SW553C
TONE SWITCH
TONE SWITCH
LOWHI
LOWHI
C551
C551
10n
10n
R554
R554
R553
R553
10K
10K
68K
R34
R34
15K
15K
C30
C30
10n
10n
68K
VR501
VR501
50K
C34
C34
3n3
3n3
VOLUME
VOLUME
50K
R20
R20
220R
R14
R14
R16
R16
220R
220R
10K
10K
TR5
C16
C16
C15
C15
33n
33n
R13
R13
2K2
2K2
R12
R12
FL143
FL143
3K3
3K3
B = 0.9 VDC
47n
47n
C = 7.6 VDC
E = 0.4 VDC
R15
R15
2K2
2K2
FT3
FT3
455 KHz
455 KHz
TR5
TR5
2SC1675
2SC1675
IF AMP
IF AMP
FT2
FT2
C17
C17
33n
33n
220R
C18
C18
TR6
R25
B = 0.9 VDC
C = 2.1 VDC
E = GROUND
R25
56R
56R
L6
LB336L6LB336
C20
C20
47n
47n
R22
R22
1K5
1K5
TR6
TR6
2SC1675
2SC1675
IF AMP
IF AMP
TR7
TR7
2SC1675
2SC1675
IF AMP
IF AMP
R21
R21
15K
15K
R24
R24
C21
C21
330R
330R
33n
33n
33n
33n
L5
LA204L5LA204
R191KR19
1K
R17
R17
68R
68R
R181KR18
C19
C19
1K
100n
100n
© Euro Radio Co
TO R92 (TR28)
S351
S351
POWER SW
POWER SW
OFF
OFF
ON
ON
L29
L29
L0034
+
-
C504
C504
10n
10n
L0034
C505
C505
10n
10n
D19
D19
1N4003
1N4003
C503
C503
10n
10n
L30
L30
L0034
L0034
GROUND IN TX
CHASSIS
3
TF083T1TF083
METER LAMP
METER LAMP
T1
C116
C116
C1401nC140
1n
10n
10n
PL501
PL501
SW553D
SW553D
DIMMER SWITCH
DIMMER SWITCH
2SC945
2SC945
PA SWITCH
C138
C138
100u
100u
C141
C141
47n
47n
DIM
DIM
R552
R552
R551
R551
100R
100R
68R
68R
TR21
TR21
C142
C142
2n2
2n2
PA - 199
BRT
BRT
SW553A
SW553A
CB/PA SWITCH
CB/PA SWITCH
PA
PA
R87
R87
10K
10K
R88
R88
22K
22K
R119
R119
10R
10R
1/2 W
1/2 W
REGULATOR
REGULATOR
R1201KR120
1K
D18
D18
9.3V
9.3V
ZENER
ZENER
C143
C143
47n
47n
2SC2236
2SC2236
TR26
TR26
TR26
B = 9.4 VDC
C = 12.5 VDC
E = 8.8 VDC
C144
C144
47n
47n
TR24
TR24
2SA733
2SA733
TX SWITCH
TX SWITCH
TR24
B = 8.5 / 7.8 VDC
C = 0.1 / 8.6 VDC
E = 8.8 / 8.8 VDC
C139
C139
RX / TX
10u
10u
R127
R127
56K
56K
C134
C134
R118
R118
22u
22u
10K
10K
C146
C146
C145
C145
10n
10n
2n2
2n2
2
D352
D352
TX LED
TX LED
CB
CB
R1221KR122
1K
TR22
TR22
2SC945
2SC945
RX SWITCH
RX SWITCH
R117
R117
D24
D24
1K5
1K5
1S1555
1S1555
R123
R123
56K
56K
D14
D14
1S1555
1S1555
TR22
B = 8.5 / 0.8 VDC
C = 8.8 / 8.8 VDC
E = 8.6 / 0.1 VDC
RX / TX
C147
C147
C148
C148
10n
10n
10n
10n
D353
D353
RX LED
RX LED
R1211KR121
1K
TR33
TR33
2SC945
2SC945
R128
R128
47K
47K
TR30
TR30
2SC945
2SC945
D15
D15
R129
R129
1S1555
1S1555
100K
100K
C149
C149
100p
100p
DRAWN BY: Rick Jackson © Euro Radio Co
DRAWN BY: Rick Jackson © Euro Radio Co
DRAWN BY: Rick Jackson © Euro Radio Co
Size Document Number Rev
Size Document Number Rev
Size Document Number Rev
Uniden 400.SCH PCB Number PA - 198
Uniden 400.SCH PCB Number PA - 198
Uniden 400.SCH PCB Number PA - 198
Date: Sheet
Date: Sheet of
Date: Sheet of
SW PA 13.8V
SW CB 13.8V
ALWAYS 8.8V
TX 8.6V
RX 8.6V
TO R62
PIN 8 PLL
1
of
11Thursday, January 03, 2008
11Thursday, January 03, 2008
11Thursday, January 03, 2008
1.1
1.1
1.1
Loading...