Kenwood TK-8108 Schematics
A B C D E
TK-8108 SCHEMATIC DIAGRAM /
TX-RX UNIT (X57-6923-XX)
1
1k
R403
1k
R402
1k
R401
C406
R407
100p
4.9V
L403
10u
C402
1.5k
1000p
100p
C403
100p
20
R
OSCIN2NC13OSCOUT4VP5VCC6DO7GND8LD9NC210FIN
1
4.8V
22p
C408
C409
10
R408
0.1u
C410
10u6.3
P
FC
NC4
NC5
FOUT
C411
C412
0.1u
10u6.3
RIPPLE
FILTER
L404
R409
100k
C401
C404
R405
15u6.3
0
TCXO
X401
VC
16.8MHz
GND
L77-1868-15
KDC
5C
XOUT
R404
1.6V
10k
2
PLLE(CPU3)
FROO(EVOL23)
MOD
CK(CPU54)
DT(CPU53)
3
D4-11
SURGE ABSORPTION
D6
CN2
4
CN3
5
D4
FNC1
FNC2
FNC3
FNC4
FNC5
FNC6
FNC7
FNC8
IGN
DATAI
DETO
TXAFI
TXAFO
EMGMIC
RXAFO
ALTI
RXAFI
5C
8C
DA221
D5
DA221
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
DA221
D7
C13 470p
DA221
C14 470p
C15 470p
D8
D10
DA221
DA221
D9
D11
DA221
C16 470p
C17 470p
DA221
C18 470p
C19 470p
C20 470p
C21 470p
C22 470p
C23 470p
29
30
43
45
46
48
47
49
1
3
7
8
9
6
VOTAGE
DROPPED
D402
HZU5ALL
111213141516171819
LE
CLK
NC3
DATA
1000p
D401
C413
0.01u
MA2S111
4.9V
C414
0.1u
5C
5C
R201
5M
Scrambler
SB
R223
5C
4.7k
C202
5C
R220
R221
AF AMP
Q201
2SC4919
5C
8C
R205
820
8C
SB
R410
10k
R412
12k
PLL IC
IC401
MB15A02
PLL SYNTHESIZER
6.9V
R415
C418
0
680
L201
0
R202
C201
0.1u
470p
R203
100k
15k
2.4V
15k
C220
4.7u6.3
C203
0.027u
D201
DAN222
OR GATE
Q402,403
CHARGE PUMP
C416
R411
470p
Q402
2SA1832(GR)
Q403
2SC4738(GR)
R413
RF AMP
2SC4649(N,P)
470
R416
C421
8C
C163
470p
C162
TX AF
2SK1824
MIC MUTE
Q202
2SJ243
C221
0.1u
4.9V
C208
1k
R224
18k
R204
R206
100
C204
2.2u10
10k
10k
Q404
4.7u6.3
0.01u
1SS372
470p
Q1
1.5k
R207
750k
C206
1000p
C205
0.1u
D202
R208
R162
R161
AGC
R414
C422
0.7V
R417
1.5k
1.2k
R222
V+
IDC
123
C207
0
470p
220k
W/NO(EVOL2)
678
+
-
NJM2100V
0.022u
R232
R233
R418
8C
W/NI(EVOL1)
1k
R209
240k
+
HPF
IC201
MIC AMP
9.1k
6.8k
C417
1k
5C
4
5.0V
C210
0.1u
5
L406
*
1k
0.047u35
FRQO
470p
3.42V
4.7u6.3
1.5k
R420
C424
C442
C164
BLO
LOCK:5.0V
R213
C232
R421
2.2k
3.3u10
10u6.3
PC/TVI-PC/TVO
R211
82k
330k
BLI
8.0V
1/2Vcc
470p
R422
C425
10u6.3
VDD
C161
C211
GND
R425
L405
47k
CV
10k
0.1u35
1000p
820p
CV
*
C433
R427
VDFref
RESET
LD
CLK
R212
82k
SPLATTER FILTER
8C
SUM AMP
68k
R231
C230
0.1u
L411
470p
100k
45
470p
R419
C423
24
FRQI
W/NI-W/NO
123456789
T:7.9V
C231
C233
D403,404
RX VCO
D405,406
TX VCO
DO
DAT
R230
C229
D403
MA2S304
D405
L416
R426
47k
DTMI
MODI
101112
+
678
0.1u
C215
R216
8C
120k
R229
C228
4.7u6.3
D404
MA2S304
MA2S304
D406
MA2S304
R163
DTMO
MODO
AFO
C212
123
+
C214
270k
R217
220k
680k
10u6.3
L407
*
C434
*
L412
*
R428
47k
470p
C444
8CL
UL(CPU21)
MOD
PLLE(CPU3)
DT(CPU53)
CK(CPU54)
MIC
W/NO(EVOL2)
W/NI(EVOL1)
47k
1314151617181920212223
IN
OUT
AFI
1200p
NJM2904V
V+
C213
3300p
R215
68k
150p
1
2
3
4
5
6
7
1/2Vcc
C227
C426
*
C427
*
TC401
L413
*
6p
C435
TC402
*
IC161
M62363FP
DIGITAL
POTENTIOMETER
AFI(EVOL12)
AFO(EVOL11)
R164 1k
R165 1k
R166 1k
MICMT1(CPU73)
MICEM(CPU74)
MIC AMP
IC202
R214
68k
C217
10u6.3
BUFFER AMP
IC203
NJM2902V
+-
-
V+
+
-
R228
10k
0.01u
R77
130k
(D)
R:6.6V
L408
*
L409
10p
C428
R430
100
T:6.4V
L414
C436
0.5p
C437
D407
MA360
D407
MODULATION
MODI(EVOL9)
14
13
+
12
11
GND
10
9
+
8
MOD BUFFA
C226
4700p
C77
470p
*
*
DC
AMP
470p
470p
R76
PC/TVO(EVOL3)
C438
*
18k
RX VCO
Q405
2SK508NV(K52)
C429
*
R429
100
C439
*
Q406
2SK508NV(K52)
TX VCO
PC/TV
MODO(EVOL10)
C218
R218
R225
150k
R226
100k
R219
C225
1u16
R227
22k
R78
1k
(D)
*
Q407
R431
MOD
10u6.3
82k
56k
C78
C430
DTMO(EVOL15)
100k
1000p
C431
*
C448
C440
DTMI(EVOL16)
R:1.0V
C432
0.5p
L410
*
R423
*
2SJ243
T/R SW
470p
T:1.1V
C441
0.3p
L415
*
*
R424
*
UL(CPU21)
PLLE(CPU3)
TX/RX (CPU20)
-t
TH401
*
EVLLD(CPU8)
7
60
X57-692 1/3
2SK1824
1/2Vcc
BEAT
SHIFT
Q87
R:1.2mV
1k
X86
R87
C90
R86
18p
0
6p
C89
C87
BEAT
SHIFT
18p
6p
C88
Q86
2SK1824
JIHGF
TX-RX UNIT (X57-6923-XX)
120k
C452
Q408
KRX102U
T/R SW
4.7k
D408
RIPPLE
FILTER
470p
RIPPLE
FILTER
0.74V
C449
MA2S111
6.1V
T:0.97V
L417
R432
Q440
2SC4617(S)
470p
C450
22u10
L418
R435
1k
7.0V
7.7V
BUFFER AMP
Q410
2SC5108(Y)
R436
R433
R:7.9V
8C
TX/RX(CPU20)
MIC
PC/TV
W/NO(EVOL2)
W/NI(EVOL1)
AFO(EVOL11)
DT(CPU53)
CK(CPU54)
R:4.9V
T:0V
C451
T:1.10V
R360
R359
CN303
C509
1.5k
470p
R361
5p
100
CN502
8R
470k
330k
C361
22
AMPSW(CPU52)
470
R511
220
R513
680
R514
C511
470p
8R
R362
R:1.9V
470p
R364
R363
CN304
SMP(CPU51)
==
PRE DRIVE AMP
Q501
2SC3357
L502
10
R515
C510
470p
C513
470p
C514
D502
C364
8R
470p
C367
470p
470p
R365
C368
D351
100k
DA221
TEMPERATURE
COMPENSATION
D351,352
RF BPF TUNING
7p
C369
*
HVC350B
470p
C370
L354
C371
0.5p
*
R366
C512
470k
0
150k
TK-8108
470p
470p
L504
C521
*
R:3.6V
Q353
3SK255
D
S
R369
470p
R523
R522
G2
G1
150
T:6.0V
C523
*
R524
3.3k
22
C522
470p
8T
470k
R370
390k
R371
R:1.6V
R:0.9V
C377
470p
MIC
PC/TV
W/NO(EVOL2)
AFO(EVOL11)
8TC(CPU77)
8RC(CPU76)
SMP(CPU51)
AMPSW(CPU52)
T:7.3V
18n
470p
C372
D352
100k
TV
C516
R516
R517
8T
15p
HVC350B
8p
3.3k
10
C373
Q502
T:0.29V
2SC3357
DRIVE1
330
R519
10
R502
C540
T:1.6V
470p
1.5k
C520
R520
RF AMP
R:7.3V
L357
C374
7p
39n
L356
*
L355
*
*
100
C376
R367
C375
470p
CN501
C378
33
180
R525
180
R526
8R
470p
SCHEMATIC DIAGRAM /
R501
C501
C357
*
T:1.8V
TH351
3.3k
R355
680
C502
1k
470p
-t
0.01u
CN503
C358
Q500
2SC5108(Y)
R506
*
C515
L351
R358
470p
C366
PRE DRIVE AMP
C504
TP
470p
L352
0.47u
0.47u
C359
12p
47
0.1u
RF AMP
7.2V
Q411
1.51V
C454
6p
27n
100
R434
8CL
470p
2SC5108(Y)
C456
4p
2p
R439
C455
0
C351
R440
120k
R:4.6V
33p
C353
0.01u
8TC(CPU77)
8RC(CPU76)
R351
R352
100
C461
470
100
0.8V
470p
R353
100k
Q351
2SC5108(Y)
IF AMP
L420
R:0.76V
560
R441
27n
R442
8C
R354
R445
C354
1k
100
0
C464
C463
6p
4.87V
C466
5p
R443
470p
470p
XF351
L71-0591-05
49.95M
C355
RF SWITCH
DAN235E
2.2k
R:5.7V
C467
18p
470p
D409
R444
1k
0
R446
8R
2p
C356
8R
470p
R507
R:7.0V
180
MIXER
T:6.8VT:5.6V
R:3.2V
CN301
Q352
3SK255
D
S
C362
L501
27n
C507
G2
G1
470p
CN302
C360
C363
R537
470p
R509
C505
8p
0.4V
0.01u
SBC(CPU82)
IGN(CPU72)
AFI(EVOL12)
5M
MICMT1(CPU73)
MICEM(CPU74)
78
5M
83
84
85
86
R94
TH97
5M
99
100
17
5M
R124
47k
10k
R93
-t
TH98
-t
C97
100k
L101
QT/DQT(CPU1)
PLLE(CPU3)
EVLLD(CPU8)
TX/RX(CPU20)
UL(CPU21)
DTMI(EVOL16)
IGN(CPU72)
SBC(CPU82)
1/2Vcc
R125
R126
R127
R128
12k
R91 1k
R92
100k
470p
5.0V
R130
R131
71
69
70
C102
R123
5.0V
0
DI
CL
CE
NCNCNC
WIDE
NARROW
CPU
IC101
30622MAA-B87GP
GND7CNVSS8EVLLD9BSHIFT10RESET11XOUT12VSS13XIN14VCC15GND16NC17POWER18INT19NC20TX/RX21UL22NC23NC24NC25NC
47k
0
R82
C83
5M
1
MICMT2
QT/DQT
MICEM
MICMT1
DTMF/MSK3PLLE4NC5NC
2
5M
IGN
CNVSS
SQIN(CPU93)
5M
6
R101
76
8RC
77
8TC
78
CM
79
NC
80
NC
81
NC
82
1k
1k
1k
1k
C103
1000p
1k
R603
C98
470p
R129
0
0.1u
C104
1k
1k
SBC
83
KMI1
84
KMI2
85
KMI3
86
KMI4
87
PWRPRCT
88
SIGNAL
89
TEMP2
90
TEMP1
91
BATT
92
47k
RSSI
93
SQIN
94
AVSS
95
NC
96
VREF
97
AVCC
98
NC
99
KMO1
100
KMO2
RSSI(CPU92) RSSI(CPU92)
0
0.1u
C101
R122
470p
51525354555657585960616263646566676869707172737475
DT
CK
NC
NC
NC
VSS
47k
R102
C82
0.1u
470p
NC
VCC
DST1
DST2
DST3
1k
1k
R104
R103
R75
1k
C72
R81
47k
5M
R151
470p
SPM
AFM
AMPSW
FNC8
FNC6
FNC7
FNC5
FNC4
CEFLS
FNC3
NC
NC
NC
EMPFLS
NC
NC
HOOK
PTT
RXD
TXD
BSYFLS
CLKFLS
FNC2
FNC1
EEPSDT
EEPSCK
EEPWP
R152
4.7k
10k
C151
1800p
Q71
KRC414RTK
R74
47k
KEC
IGNITION
INT(CPU18)
RESET(CPU10)
5M
C152
AFI(EVOL12)
R:0.6V
WIDE(CPU65)
NARROW(CPU64)
50
R119
1k
49
R118
48
R117
47
R116
46
R115
45
R113
47k
44
R114
43
42
41
40
R112
47k
39
38
TXD
RXD
37
36
R111
35
34
R109
1.5k
33
R108
47k
32
R107
31
R106
30
1k
R105
29
1k
28
27
26
1
A0
2
R70
47k
A1
3
A2
4
GND
AT24C64A10SI18
3900p
R72
1M
R73
100k
1k
1k
1k
1k
1k
47k
C66
EEPROM
1
49
48
47
46
45
43
1k
36
35
R110
47k
5M
5M
30
29
8
VCC
7
WP
6
SCL
5
SDA
IC66
470p
R71
B
4.7k
R68
AFM(CPU50)
DTMI(EVOL16)
W:4.9V
N:0V
C316
0.1u
R318
10k
IF SWITCH
D303
DAN222
R321
22k
C318
0.1u
R320
8C
5C
1k
1k
R69
R67
47k
R66
47k
4.9V
5M
R323
150k
CF301
L72-0993-05
CF302
L72-0999-05
10k
C317
AFI(EVOL12)
R270
2.7k
R269
82k
R268
1k
R:0V
SQIN(CPU93)
SBC(CPU82)
1/2Vcc
INT(CPU18)
RESET(CPU10)
8
R:7.5V
2SC4649(N,P)
W:0V
N:4.9V
0.1u
AF MUTE
2SK1824
C267
Q252
2SK1824
AF MUTE
L304
330n
Q302
BUFFER AMP
R317
D302
DAN222
10k
R319
C269
1u
C268
0.1u
Q253
0.47u
10k
IF SWITCH
C250
9
R322
100
C324
0.01u
WIDE
R316
NARROW
W/NI(EVOL1)
0.1u
47k
R249
47k
R250
Scrambler
R267
0
L303
C323
8R
330n
270p
22k
61
X57-692 2/3
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