Cobra 18 WX ST II Circuit Diagram
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- Cobra 18 WX ST II | Circuit Diagram - Page 1
/77/77 023 KR01105 WX SW 019 6965P C0 4 5724 /77 C92 47uF 4.7K 6141 09 10K 114145 t:PI 22 1/2W - 'WV REB 00945P 687 = 470 002 100,11 R8D • 100 E 064 10uF 9.1 RX DC POWER SW 1 13.8VDC 177 /77 /77 /77 7P TITLE: CIRCUIT DIAGRAM FOR COBRA 18 WS2 ES2 P.P PILOT FINAL
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1
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CIRCUIT
DIAGRAM
FOR
COBRA
18WS2
WX
MODE
VCO
FREQUENCY:
150/M1.955
-
152MH2580
WX
VCO
ADJ
R
4
L1
RI
62
83
03
21200-1
C4
2.2K
22K
22K
15PF
I51
-MHz
1°'
9:0
101/0:01II!
'
A
1
C2
I
2---
-
27PF
"
1002
x
084
01-~E
6
2,
10PF
L
~
187
/'77
/77
/77
WX
RF
AMP.
AND
FIRST
MIXER
AREA
WX
DC
OIL
02
KRC1109
100
C7
OK
01
KTC3BBOS
010
22PF
gt
13
915
Og
811
3.3K
KIPF
8206
=
C9
1PF
102
-MHz
KTC388
0505
-
-
I
012.
013
014
3PF
5FF
4PF
R12
820K
d
;
711
•
ED
02
015
F
C1
'
22n
T
22nF
1735
27MHz
05
876
.0I-062
07
1-
-
Ra5
KTC38603
R
e.
10
nF
5
22
31
EPF
K25226
023
2
22nF
rc'
5
/77 /77 /77
AM
RF
AMP
019
17030755
AGC
R20
220
1st
MIX
08
KTC3880S
C51
1000PF
R19
2
550
/77
CI
121
1.10
KEI-055
10.7482
K05226
0F1
029
—
2211
3
100
R7S
5K
g
El
10K
--025
IOnF
047
2uF
C43
3PF
032
61038805
845
2
330
7
41036500
La
KEI-15452-1
12
-MN.
017
22nF
10.7445
/77
03
L4
144148
KEI-066
018
=
X1
10245MH0
10nF
R35
1.5K
RIDE
68K
137
10nF
M3
<=1
04
04
1N4146
77
35
RI
=I
51
24
51
m
ICI
0905018
m
m/771
0,,64
VC2
_
3071
I
045
=
C39
—
2701*
120PF
2.
T3
„,
L23
CF3
KEI-057
455K42
/77
'/77
08,
I
610,5
100
22PF
CAD
7002
026
61036750
TTT
0
51
4
.
—1
=
2
•
1T
/77
/77
/77
R15
1.55
26
;":I:
R3D
4.7K
017
K1039600
C34
220F
;/..
i
31
031
1202
2
837
L8
5,
KEI-065
15261
R31
100
'
2,U
R85
68K
C4B
2
1051
•
/77
3
7-
AGC
CONTROL
066
5PF
R17
10
p8-
088
1-9
IOnF
iil°
2
068
iI-
10nF
R53
47K
660
IK
R59
686
100
10011
•—i
077
Ill
458
10K
SOUND
—TRACK
SYSTEM
658
39K
359
R56
103InF
F
2.25
033
415045
6108
826
620184
R52
47K
•
2
3175
El
TR
R45
22K
651
C66
2.2a
,
87
10
F
F
060
C
10
F
355
150P
;
C70
2.241
C7I
'oar
14
C72
1051
R57
100
10
IC4
,
N01405
C7
68••7
,
624
0
8.26
C5B
5600P
073
081
1626
0n1
074
47nF
079
=
100111
075
—
220
F
R140
10K
ED
I
8175
10nF
035
KT038750
671
10K
872
0186
10nF
RA4
2
RI45
335
47K
—
0165
1uF
021
TC391755
694
475
2
677
575
10K
1011
gI—La
015
/77
KTC36755
SCAN
DET
2
016
R48
KT038756
106
R73
10K
R
I;TL
H
1226
R55
100K
ED
(2
R
4
74
/77
254
1002
SQ
ADJ
V25
569
011
144148
080
—
1nF
/77
R75
ANL
SECTION
TP6
O
/77
—
277
11
HPF
-
4
Fa
2
,C
P
/77
L13
2.1248
015
L16
5.5T
7.51
14
0135
21121
17
/77/77
170
18
X122
021
!0102
6
ED
111
15
144148
7472
IK
TX
FINAL
TX
DRIVER
TX
BUFFER
025
025
L20
027
L21
25020780
0136
25023141
KEI-11404-1
250941140
117LH
,
270P1
270PF
2
R113
0140
10nF
6114
220
7
(
/77
2
0113
Tat)
2
a
7
2
s
C55
10nF
T
1
..
1
,
20
0-0TP8
VR6
20KB
TP7
27"
07
fr7
12304
Ico
uTS
MO
vqt
5
—METER
ADJ
052
10uF
P
—METER
400
los
50
1016
R
133
R159
16
1K
s
-2
S
1
P
0.5
•
•
•
3
5
9
i
+30
1
2
3
4
7
IS
s
/77
2
R
IO
'
BUS10
CAN
BUSO9
BUS08
ST
OW
01
co
V
C
C
T
c
2
FT
615
N
N
IM
0B/WX
CH9/19
0
LE011
LEDIO
LED9
DOI
SCAN
RX
tD
CO
CO
00
Cn
M M
CO
CO
(I
1
ca
FRONT
PCB
010
030
LA733
512B
2.2K
BUS05
029.
1.09457
6127
4.7k
•
•
(13
0103
I
Z3
47uF
5.55
/77
/77
Q31
LA733
0175
5125
4791
2.25
6125
IOC
1/2W
zo
BUS26
ROTARY
ENCODER
CH
UP/DW
UP
1
2
04
5
8051
/77
.
m
il!
2
\
k'Y
LEOS
WX
R153
104
,BUS25
BUS24
,BUS23
BUS22
BUS30
BUS29
BUS28
BUSD4
BUS05
26
25
20
R93
OK
=
144146
20
R121
4.7K
8124
-F
1024
f;7
n
10K
0182
C51
MuF
5
n
r
';
7
Q
1.54
0148
t
lf
C120
0124
1
1000uF
r ;
0791
-
0121
12161,
2
11
.
KIA7217AP
'''-'9"-1
10
12
00
2
LIF
-)...
..,..
1
01116
220P
3
CIII
47uF
/77
0123
121
0174
0.039uF
/77
184202
AUDIO
AMPLIFIER
0125
23041
•
3NK
1
1
,
16
06
.L
5
E
R103
24
0164
rj
7
tow
SQUELCH
CON
VR4
10
KEI
TP5
024
KTAI5045
TX
AMC
CONTROLLER
0138
8
1
7
LOOT
LED
ST
ON
TX
4104
10K
ED
BUS26
UL
6162
BUS25
WX-CON
BUS24
CS
-CON
BUS23
ST
-ON
BUS22
ST
-OFF
BUS21
SCAN
BUS2O
BEEP
BUS19
RX/TX
47K
C126
1uF
VR2
2KB
R107
2.74
8I
RZZE
Ft
1
>
BUSO4,
▪
BUSD6
,
BUS07
BUS08
BUS09
BUSIO
/77
SG
BUS18
SF
BUS17
SE
BUS16
SD
BUS15
,
BUS00
SC
BU
Js3
S4
SB
B
BUS02
SA
BUS12
Elljsc
,
Pas
703
7
P
2
50
P
5
7
SI
07
10
S
747870807
Pm
S
P
0
-9—
I
,
1
P72
vs
e7
.
e7.
FEEEE
•
r
ri
Or7-
/77
/77
2
B
47PF
C160
401
27PF
2DPF
X2
4.5440
BUS21
BUS20,
BUS19
,
T.'
2
2
EIE
-
i
7f
I
Tr
gE82
=
2.2K
r77
03
02
CO CO
—5—
_a_
HdT
657
19—
MT
RBS
7
1.1K
1.5K
00
114146
C82
3.3uF
R63
RA2
76
075
15K
33uF
/77
2
R101
82K
C3D
1uF
3.9K
ET
-
4
/77
999
17
84
0133
2.2K
15
.OL
0169
=
1024
/77
BU
S[00:993
R173
220K
R°
•
1
1:
7
1
2
c
T
580K
337
038
/
77
7038759
K72355755
uF
27
I
I--•
0170
1DOOPF
6123
10K
-0
150
39PF
n
•
P27
100K
1
4
1ff
—1041
9
/77
rr7
554
azD
011
LA733
R32
10K
010
K7035756
R38
38
RX
DC
CTL
0103
1024
1
C152
1002
1
mot
ciss
o
c
'
47nF
j
C32
12PF
oza
TP1
C35805
L
03
07
KOV2515
II
AM
VCO
017
1
3
7110n5
7
0100
47PF
889
,
095
R
2
CO
474
I
22nF
100
33PF
C33
22PF
/77
LN
KEI-083
2OF
22
K1038805
"1
C97
F
lt
47K
120PF
023
KR01105
177
/77/77
48
614
."0
0IM
5
2
6
4
7
84
4148
TX
SW
WX
SW
C0
019
6965P
4
5
7
2
4
/77
C92
47uF
DI
A
017
±
0110
3
'
1N414E1
r
T
7
1nF
6141
09
10K
114145
t:PI
4.7K
00945P
002
100,11
22
1/2W
—
'WV
REB
687
=
470
R8D
•
100
E
064
10uF
9.1
696
180
/77
IC
RX
VOLUME
1/634
50KA
SP
JACK
/77
TP4
0
MIC
JACK
J2
DC
POWER
SW
177
1
13.8VDC
/77
/77
/77
7P
/77
TITLE:
CIRCUIT
DIAGRAM
FOR
COBRA
18
WS2
ES2
P.P
PILOT
FINAL
l=r
COMPANY:
DATE:
XVI
PENG
JAW.
08-2050
SHEET:
1
OF
1
<ER:
01
APPROVED
BY:
OATS:
LIPOATE:
JAN
-I2-2001
FILE
NA99:
C9184P.53H