Kenwood TKR-850 User manual

© 2003-7 PRINTED IN JAPAN
B51-8662-00 (N)1927
UHF FM REPEATER
TKR-850
SUPPLEMENT
SERVICE MANUAL
Knob (VOL)
(K29-5389-03)
Knob (DC source)
(K29-9106-04)
Key top
(K29-5460-02)
Panel assy
(A62-0934-03)
Panel (Outer)
(A62-0840-03)
Modular jack
(E08-0877-05)
This supplement to the Service Manual is available for products with serial number 50500011 or later.
This Service Manual contains a parts list, schematic diagrams and PC boards of a new final unit for the TKR-850.
Since the adjustment procedure is the same as before, refer to the Service Manual (K,E : B51-8557-10 , C : B51-8568-10) for
the TKR-850 for items not provided in this Service Manual.
PARTS LIST .............................................................................................. 2
PC BOARD
FINAL UNIT (X45-3740-10) .................................................................. 4
SCHEMATIC DIAGRAM........................................................................... 8
EXPLODED VIEW................................................................................... 10
SPECIFICATIONS ................................................................................... 11
CONTENTS

TKR-850
2
PARTS LIST
✽New Parts. indicates safety critical components.
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
L: Scandinavia K:USA P:Canada
Y: PX (Far East, Hawaii) T:England E:Europe
Y:AAFES (Europe) X:Australia M:Other Areas
C:China
-G02-0894-04 EARTH SPRING (FINAL FET)
-✽J21-8467-04 HARDWARE FIXTURE (DRIVE FET)
C1 CK73GB1H471K CHIP C 470PF K
C3 C90-2146-05 ELECTRO 100UF 25WV
C6,7 CK73GB1H471K CHIP C 470PF K
C8 CC73GCH1H080D CHIP C 8.0PF D
C10 CK73GB1H471K CHIP C 470PF K
C12-15 CK73GB1H471K CHIP C 470PF K
C17 CC73GCH1H050C CHIP C 5.0PF C
C18,19 CK73GB1H471K CHIP C 470PF K
C20 CK73FB1H471K CHIP C 470PF K
C21 CC73FCH1H120J CHIP C 12PF J
C22 CC73FCH1H060D CHIP C 6.0PF D
C23 CK73FB1H471K CHIP C 470PF K
C24 C90-4016-05 ELECTRO 47UF 25WV
C26 CC73GCH1H471J CHIP C 470PF J
C27 CK73GB1H471K CHIP C 470PF K
C28 CK73FB1E104K CHIP C 0.10UF K
C29 CK73GB1H471K CHIP C 470PF K
C30 CK73FB1E104K CHIP C 0.10UF K
C31 C93-0599-05 CHIP C 470PF K
C32 C93-0558-05 CHIP C 8.0PF 500WV
C33,34 C93-0566-05 CHIP C 33PF 500WV
C35 C93-0599-05 CHIP C 470PF 500WV
C36 CK73FB1E104K CHIP C 0.10UF K
C38 CK73GB1H471K CHIP C 470PF K
C40 C93-0669-05 CHIP C 30PF 500WV
C41 C93-0599-05 CHIP C 470PF 500WV
C43 CM73F2H180J CHIP C 18PF J
C44 C93-0556-05 CHIP C 6.0PF 500WV
C46 C93-0599-05 CHIP C 470PF 500WV
C48 CK73GB1H471K CHIP C 470PF K
C49 CC73GCH1H101J CHIP C 100PF J
C50 CK73FB1E104K CHIP C 0.10UF K
C51 C90-2143-05 ELECTRO 47UF 25WV
C52 CC73GCH1H101J CHIP C 100PF J
C53 CK73FB1E104K CHIP C 0.10UF K
C54 C90-2146-05 ELECTRO 100UF 25WV
C55 C93-0599-05 CHIP C 470PF 500WV
C59 CM73F2H100D CHIP C 10PF D
C61 CM73F2H471J CHIP C 470PF J
C69 CC73GCH1H101J CHIP C 100PF J
C70 CK73FB1E104K CHIP C 0.10UF K
C71,72 CK73GB1H471K CHIP C 470PF K
C75 CK73GB1H471K CHIP C 470PF K
C77 CC73GCH1H101J CHIP C 100PF J
C78 CK73GB1H471K CHIP C 470PF K
C79 CK73FB1E104K CHIP C 0.10UF K
C80 C92-0777-05 ELECTRO 1000UF 25WV
C81 CM73F2H471J CHIP C 470PF J
C83 C93-0556-05 CHIP C 6.0PF 500WV
C86 C93-0560-05 CHIP C 10PF 500WV
C89 C93-0555-05 CHIP C 5.0PF 500WV
C91-98 CK73GB1H471K CHIP C 470PF K
C99 CK73FB1E104K CHIP C 0.10UF K
C100-102 CK73GB1H471K CHIP C 470PF K
C103 C92-0628-05 CHIP-TAN 10UF 10WV
C104 CC73GCH1H101J CHIP C 100PF J
C105 CK73GB1H471K CHIP C 470PF K
C106 CK73FB1E104K CHIP C 0.10UF K
C107 CC73GCH1H101J CHIP C 100PF J
C108 CK73FB1E104K CHIP C 0.10UF K
C109 CC73GCH1H101J CHIP C 100PF J
C112 CK73GB1H471K CHIP C 470PF K
C113 CK73FB1E104K CHIP C 0.10UF K
C114 CK73GB1H471K CHIP C 470PF K
C115 CK73FB1E104K CHIP C 0.10UF K
C116 CK73GB1H471K CHIP C 470PF K
C117 CK73FB1E104K CHIP C 0.10UF K
C118 C93-0555-05 CHIP C 5.0PF 500WV
C119 CK73GB1H471K CHIP C 470PF K
C120 CK73FB1H223K CHIP C 0.022UF K
C121,122 CM73F2H150J CHIP C 15PF J
C123,124 CM73F2H220J CHIP C 22PF J
C160 CM73F2H471J CHIP C 470PF J
CN1 E04-0154-05 PIN SOCKET
CN3 E40-5632-05 PIN ASSY
CN4 E40-3246-05 PIN ASSY
CN5 E40-5703-05 PIN ASSY
CN6-8 E23-0462-05 TERMINAL
F1 F53-0190-05 FUSE
CN51,52 J13-0071-05 FUSE HOLDER
L1 L40-1075-92 SMALL FIXED INDUCTOR (10NH)
L2 L40-1075-34 SMALL FIXED INDUCTOR (10NH)
L3 L40-1875-92 SMALL FIXED INDUCTOR (18NH)
L5 L41-6865-20 SMALL FIXED INDUCTOR
L6,7 L34-4517-05 AIR-CORE COIL
L8 L40-3975-34 SMALL FIXED INDUCTOR (39NH)
L9 L34-4517-05 AIR-CORE COIL
L11 L34-4517-05 AIR-CORE COIL
L12 L34-4523-05 AIR-CORE COIL
L14 L40-1575-34 SMALL FIXED INDUCTOR (15NH)
L15 L40-1075-34 SMALL FIXED INDUCTOR (10NH)
R1 RK73GB1J103J CHIP R 10K J 1/16W
R2 RK73GB1J222J CHIP R 2.2K J 1/16W
R3 RK73GB1J470J CHIP R 47 J 1/16W
R4 RK73GB1J220J CHIP R 22 J 1/16W
R6 RK73GB1J470J CHIP R 47 J 1/16W
R7 RK73GB1J682J CHIP R 6.8K J 1/16W
R8 RK73FB2A100J CHIP R 10 J 1/10W
R9 RK73FB2A220J CHIP R 22 J 1/10W
R11 RK73GB1J104J CHIP R 100K J 1/16W
R12 RK73GB1J183J CHIP R 18K J 1/16W
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
TKR-850 (Y54-319X-XX)
FINAL UNIT (X45-3740-10)
TKR-850
FINAL UNIT (X45-3740-10)

TKR-850
3
PARTS LIST
R13 RK73FB2A470J CHIP R 47 J 1/10W
R14 R92-2571-05 CHIP R 270 J 1/2W
R15 R92-1259-05 CHIP R 18 J 1/2W
R16 R92-2571-05 CHIP R 270 J 1/2W
R17 RK73FB2A154J CHIP R 150K J 1/10W
R18 RK73EB2B101J CHIP R 100 J 1/8W
R19 RK73FB2A104J CHIP R 100K J 1/10W
R20,21 R92-1252-05 CHIP R 0 OHM J 1/16W
R22 R92-1215-05 CHIP R 470 J 1/2W
R23,24 RK73FB2A104J CHIP R 100K J 1/10W
R26 RK73GB1J101J CHIP R 100 J 1/16W
R31 RK73GB1J224J CHIP R 220K J 1/16W
R33 R92-0670-05 CHIP R 0 OHM
R34 R92-1252-05 CHIP R 0 OHM J 1/16W
R35 RK73GB1J104J CHIP R 100K J 1/16W
R36 R92-1252-05 CHIP R 0 OHM J 1/16W
R37 R92-0670-05 CHIP R 0 OHM
R38 RK73GB1J473J CHIP R 47K J 1/16W
R40 RK73FB2A101J CHIP R 100 J 1/10W
R41 R92-1252-05 CHIP R 0 OHM J 1/16W
R43 RK73FB2A101J CHIP R 100 J 1/10W
R44 R92-0670-05 CHIP R 0 OHM
R45 RK73GB1J102J CHIP R 1.0K J 1/16W
R46 RK73GB1J471J CHIP R 470 J 1/16W
R47 RK73GB1J222J CHIP R 2.2K J 1/16W
R48 RK73GB1J471J CHIP R 470 J 1/16W
R49 R92-1217-05 CHIP R 0 OHM
R50 R92-1317-05 CHIP R 18 J 1W
R51 RK73GB1J104J CHIP R 100K J 1/16W
R52 RK73GB1J393J CHIP R 39K J 1/16W
R53 RK73GB1J154J CHIP R 150K J 1/16W
R54 RK73GB1J102J CHIP R 1.0K J 1/16W
R55 RK73GB1J474J CHIP R 470K J 1/16W
R56 RK73GB1J473J CHIP R 47K J 1/16W
R57 RK73GB1J471J CHIP R 470 J 1/16W
R58 RK73GB1J222J CHIP R 2.2K J 1/16W
R59 RK73GB1J471J CHIP R 470 J 1/16W
R60 RK73GB1J104J CHIP R 100K J 1/16W
R61 R92-2687-05 RESISTOR 5.6 J 5W
R62 RK73GB1J102J CHIP R 1.0K J 1/16W
R63 RK73GB1J222J CHIP R 2.2K J 1/16W
R72 RK73GB1J184J CHIP R 180K J 1/16W
VR1 R12-6429-05 TRIMMING POT. (100K)
K1 S76-0426-05 RELAY
D2 02DZ6.2(Y) ZENER DIODE
D4,5 HSM88AS DIODE
D7 ZSA5A27 ZENER DIODE
D8 RB051L-40 DIODE
D9 MINISMDC050-02 VARISTOR
D10 1SS355 DIODE
D51,52 DSA3A1 DIODE
IC1 TK11050M ANALOG IC
IC2 NJM78L05UA BI-POLAR IC
IC3 TA75W01FU MOS IC
Q1 2SC5110(O) TRANSISTOR
Q2 2SC3356(R24) TRANSISTOR
Q3 2SK2596 FET
Q4 PD55008S DRIVE FET
Q5 RD60HUF1-01 FINAL FET
Ref. No. Address Parts No. Description Desti-
nation
New
parts
Ref. No. Address Parts No. Description Desti-
nation
New
parts
FINAL UNIT (X45-3740-10)
Q8 2SC4116(Y) TRANSISTOR
Q9 DTD123EK DIGITAL TRANSISTOR
TH1 PTH9M04BE471TS THERMISTOR

4
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
C23
C24
C26
C31 C32
C33
C34
C35
C36
C38
C40
C41
C4
3
C51
C69
C70
C80
C1
C3
C6 C7
C8
D2
D7
D8
D9
F1
K1
L1
L2
L3
L5
L6
L14
L15
CN51
CN52
D51
D52
IC3
C119
C120
R11
R12
R13 8T 8T
R14
R15
R16
R17
R18
R19
R20 R21
Q1
Q2
R26
Q3
D
S
G
R1
R2 R3 R4
R8
R9
R46
R47
R48
R49
R55 R5
9
R61
R62
C12 C13 C14 C17
GND
+B2
GND
+B1
Main DC Back up battery
J72-0911-09 (B/2)
+B1
GND
+B2
CN6 MAIN DC
(RED)
CN7 BACKUP
(ORANGE)
CN8 GND
(BLACK)
CHARGE
+
CN4
FAB 1
2
FAG
1 3B
B
E
CN5
Vg
++
Q4
GD
+
8T
CN1
TX IN
1
45
8
TKR-850 PC BOARD
FINAL UNIT (X45-3740-10) Component side view (J72-0911-09)
Ref. No. Address
IC3 8J
Q1 9H
Q2 9G
Q3 8F
Ref. No. Address
Q4 6I
Q5 5L
Q8 8K
D2 8I
Ref. No. Address
D4 7P
D5 9Q
D7 3J
D8 6E
Ref. No. Address
D9 6E
D51 7B
D52 8B

5
JKLMNOPQRS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C27
C28
C29
C30
C40
C43
C44
C46
C48
C54
C55
C59
C61
C69
C70
C71
C72
C75
C81
C83
C86
C89
D4
D5
D7
L7
L8
L9 L11
L12
IC3
C118
C120
C121
C122
8T
C123
C124
R22
R23
R24
26
Q8
R31
R33
R34
R35
R36
R37
R38
R40
R41
R43
R44
R45
VR1
C160
R55
R56
R57
R58
R59
R60
R62
R63
R72
CN3
1
45
8
PDT
VTH
Vg
PC
DET
TH1
Q5
GD
+
1 8E
RSW
8T
PC
FAS
PDT
BAT
VYH
REV
FWD
ANT
J72-0911-09 (A/2)
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
PC BOARD TKR-850
FINAL UNIT (X45-3740-10) Component side view (J72-0911-09)

JKLMNOPQRSIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
C23
C24
C26
C27
C28
C29
C30
C31 C32
C33
C34
C35
C36
C38
C40
C41
C43
C44
C46
C48
C51
C54
C55
C59
C61
C69
C70
C71
C72
C75
C80
C81
C83
C86
C89
C1
C3
C6 C7
C8
D2
D4
D5
D7
D8
D9
F1
K1
L1
L2
L3
L5
L6
L7
L8
L9 L11
L12
L14
L15
CN51
CN52
D51
D52
IC3
C118
C119
C120
C121
R11
R12
C122
R13 8T 8T
C123
R14
C124
R15
R16
R17
R18
R19
R20 R21
R22
R23
R24
Q1
Q2
R26
Q3
D
S
G
Q8
R31
R33
R34
R1
R35
R2
R36
R3
R37
R4
R38
R8
R9
R40
R41
R43
R44
R45
VR1
R46
R47
R48
R49
C160
R55
R56
R57
R58
R59
R60
R61
R62
R63
R72
CN3
C12 C13 C14 C17
GND
+B2
GND
+B1
Main DC Back up battery
J72-0911-09 (B/2)
+B1
GND
+B2
CN6 MAIN DC
(RED)
CN7 BACKUP
(ORANGE)
CN8 GND
(BLACK)
CHARGE
+
CN4
FAB 1
2
FAG
1 3B
B
E
CN5
Vg
++
Q4
GD
+
8T
CN1
TX IN
1
45
8
PDT
VTH
Vg
PC
DET
TH1
Q5
GD
+
1 8E
RSW
8T
PC
FAS
PDT
BAT
VYH
REV
FWD
ANT
J72-0911-09 (A/2)
TKR-850 PC BOARD
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
FINAL UNIT (X45-3740-10) Component side view (J72-0911-09)
PC BOARD TKR-850
FINAL UNIT (X45-3740-10) Component side view (J72-0911-09)
Ref. No. Address
IC3 8J
Q1 9H
Q2 9G
Q3 8F
Ref. No. Address
Q4 6I
Q5 5L
Q8 8K
D2 8I
Ref. No. Address
D4 7P
D5 9Q
D7 3J
D8 6E
Ref. No. Address
D9 6E
D51 7B
D52 8B

6
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C49
C50
C52
C53
C91 C92 C93 C94 C95 C96 C97
C106
C107
C108
C109
IC1
R51
R52
R53
J72-0911-09 (A/2)
1
34
6
TKR-850 PC BOARD
FINAL UNIT (X45-3740-10) Foil side view (J72-0911-09)
Ref. No. Address
IC1 7J
IC2 9O
Q9 8O
D10 8O

7
JKLMNOPQRS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C49
C50
C77 C78
C79
C98
C99
D10
C100
C101
C102
C103
C104
C105
C106
C107
C
1
IC2
C112
C113
C114
C115
C116
C117
Q9
R6
R7
R50
R
51
R
52
R54
C10
C15
C18
C19
J72-0911-09 (B/2)
+B1
GND
+B2
GND
+B2 GND +B1
Main DC
Back up battery
1
3
I
G
O
+
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
PC BOARD TKR-850
FINAL UNIT (X45-3740-10) Foil side view (J72-0911-09)

JKLMNOPQRSIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C49
C50
C52
C53
C77 C78
C79
C91 C92 C93 C94 C95 C96 C97
C98
C99
D10
C100
C101
C102
C103
C104
C105
C106
C107
C108
C109
IC1
IC2
C112
C113
C114
C115
C116
C117
Q9
R6
R7
R50
R51
R52
R53
R54
C10
C15
C18
C19
J72-0911-09 (B/2)
+B1
GND
+B2
GND
+B2 GND +B1
Main DC
Back up battery
J72-0911-09 (A/2)
1
34
6
I
G
O
+
TKR-850 PC BOARD
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
PC BOARD TKR-850
FINAL UNIT (X45-3740-10) Foil side view (J72-0911-09) FINAL UNIT (X45-3740-10) Foil side view (J72-0911-09)
Ref. No. Address
IC1 7J
IC2 9O
Q9 8O
D10 8O

8
7
6
5
4
3
2
1
ABCDE
TKR-850 SCHEMATIC DIAGRAM
X45-3740-10 (1/2)
-t
8p
C33
33p
470p
R49
0
470p
R50
18
470p
Q9
DTD123EK
470p
100u25
470p
R56
47k
470p
IC1
TK11050M
1
2
34
5
6
C106 0.1u C103 10u10
R13
47
1SS355
L14
15n
470p
C108 0.1u
C24 47u16
C12
470p
C22
6p
IC2
NJM78L05UA
2
COM
3IN 1
OUT
6.8k
CN1 C17
5p
2SC4116(Y)
Q8
470p
R18 100
C7 470p
C6 470p
C8
8p
C98
470p
C27 470p
470p
R3 47
R51 100k
2SC3356(R24)
Q2
R46 470
C102 470p
470p
C26 470p
C38
470p
2SK2596
Q3
R6 47
CN4
1
2
L5
6.8n
R52 39k
C28 0.1u
10n
C31
470p
C107 100p
L2 10n
0.1u
470p
R1 10k
18n
R4 22
CN3
1
2
3
4
5
6
7
8
C21
12p
R48 470
L1
10n
R47
2.2k
2SC5110(O)
Q1
470p
R8 10
470p
C104 100p
C34 33p
C109 100p
R2
2.2k
R15
18
C1
470p
R53
150k
C23
470p
C119
470p
270 270
TH1
DC SWITCH
VTH
E
P C
8 T
THERMOSTAT
RSW
FAS
SURGE
PROTECTOR
FAB
RF AMP
FINAL UNIT
(X45-3740-10)(A/2)
FAG
Q1-3
D10
BAT
VOLTAGE
REGULATOR
PDT
DC SWITCH
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN19
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN16
Comp.in
Vref
Comp.outVcc
GNDVcont
C10
R7
C18
C32 R14 R16
C92 C97 C91 C95 C96 C93 C94
C100
C3
D10
C101
C99
150k
470p
100k
0.1u
R17 C35 R19 C36
C13 C20
L15
L3
R57
470
C30
0.1u
C29
470p
R58
2.2k
R60
100k
C15
470p
18k 100k 470p 22 470p
R12 R11 C19
R9
C14
T:7.57V
R:0V
T:7.91V
R:0V
T:0.70V
R:0V
T:0.69V
R:0V
T:13.03V
R:13.54V
T:7.61V
R:0V

9
7
6
5
4
3
2
1
JIHGF
SCHEMATIC DIAGRAM TKR-850
X45-3740-10 (2/2)
Note : The components marked with a dot (•) are parts of layer 1.
C81
470p
C75 470p
C69
100p
R40 100
R38 47k
R26 100
C43
18p
D52
DSA3A1
C40 30p
VR1 100k
R59
470
R34
0
L8
39n
R22
470
R44
0
R20
0
R55
470k
L7
15n
R54
1k
R37
0
R36 0
1
2
3
45 IN2+
6IN2-
7OUT-B
8VCC
CN6
ANT
C70
0.1u
L11
15n
C83
6p
R62 1k
D2
02DZ6.2(Y)
C89
5p
R33
0
C71 470p
C117
0.1u
D51
DSA3A1
L9
15n
22p
CN51
CN52
R45 1k
C53
0.1u
D8
RB051L-40
C61
470p
10p
C55
470p
C54
100u25
CN7
L12
110n
R41
0
R43
100
22p
C48
470p
C113 0.1u
R35
100k
R21
0
C86 10p
R61 5.6
D5
HSM88AS
C116
470p
C115 0.1u
C52
100p
CN8
C114 470p
C72 470p
D9
MINISMDC050-02
C120
0.022u
5p
D4
HSM88AS
C112 470p
PD55008S
Q4
RD60HUF1-01
Q5
C44
6p
C121
15p
C122
15p
C160
470p
R72
180k
R31
220k
R63
2.2k
CN5
1
3
K1
MAIN DC
E
B
BACKUP
B
(X45-3740-10)(B/2)
GND
GNDW4
W5 +B2
VOLTAGE
REFERENCE
+B1
DC AMP
+B2
+B1
GND
MAIN DC
BACK UP
BATTERY
PROTECT OF REVERSE
CONNECTION
D51,52
FINAL AMP
W3
CURRENT
PROTECTOR
RF DETECTOR
REVERSE
CURRENT
PROTECTION
D4,5
SURGE
PROTECTOR
CHARGE
GND
TX
DRIVE
AMP
D7
OUT1
IN1-
IN1+
VEE
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN15
F1
2.5A
C49 C51 C50
100p
47u25
0.1u
L6
15n
C41
470p
C124
C59
C123 C118
C46
470p
R24
100k
R23
100k
C79 C77 C80
C105
C78
D7
0.1u 100p 1000u25 470p 470p ZSA5A27
IC3
TA75W01FU
T:4.26V
R:0V
T:13.05V
R:13.56V

-t
8p
C33
33p
470p
C81
470p
C75 470p
R49
0
470p
R50
18
C69
100p
R40 100
470p
Q9
DTD123EK
470p
100u25
470p
R56
47k
R38 47k
470p
R26 100
C43
18p
D52
DSA3A1
C40 30p
IC1
TK11050M
1
2
34
5
6
VR1 100k
R59
470
C106 0.1u C103 10u10
R13
47
R34
0
L8
39n
1SS355
L14
15n
470p
R22
470
R44
0
C108 0.1u
C24 47u16
R20
0
R55
470k
C12
470p
C22
6p
IC2
NJM78L05UA
2
COM
3IN 1
OUT
L7
15n
R54
1k
6.8k
R37
0
CN1
R36 0
C17
5p
2SC4116(Y)
Q8
470p
1
2
3
45 IN2+
6IN2-
7OUT-B
8VCC
CN6
ANT
R18 100
C70
0.1u
C7 470p
C6 470p
L11
15n
C8
8p
C98
470p
C83
6p
C27 470p
470p
R3 47
R51 100k
2SC3356(R24)
Q2
R62 1k
R46 470
C102 470p
470p
C26 470p
D2
02DZ6.2(Y)
C89
5p
C38
470p
2SK2596
Q3
R33
0
C71 470p
R6 47
CN4
1
2
L5
6.8n
C117
0.1u
D51
DSA3A1
R52 39k
L9
15n
22p
CN51
CN52
R45 1k
C53
0.1u
C28 0.1u
D8
RB051L-40
10n
C61
470p
C31
470p
10p
C55
470p
C54
100u25
CN7
C107 100p
L2 10n
L12
110n
0.1u
R41
0
470p
R1 10k
R43
100
22p
18n
C48
470p
R4 22
CN3
1
2
3
4
5
6
7
8
C21
12p
C113 0.1u
R48 470
R35
100k
L1
10n
R21
0
R47
2.2k
C86 10p
2SC5110(O)
Q1
470p
R8 10
R61 5.6
470p
C104 100p
D5
HSM88AS
C34 33p
C109 100p
R2
2.2k
R15
18
C116
470p
C1
470p
C115 0.1u
C52
100p
CN8
C114 470p
C72 470p
R53
150k
D9
MINISMDC050-02
C23
470p
C120
0.022u
5p
D4
HSM88AS
C112 470p
C119
470p
270 270
PD55008S
Q4
RD60HUF1-01
Q5
C44
6p
C121
15p
C122
15p
C160
470p
R72
180k
R31
220k
R63
2.2k
TH1
CN5
1
3
K1
DC SWITCH
VTH
MAIN DC
E
E
P C
B
BACKUP
B
(X45-3740-10)(B/2)
GND
8 T
GNDW4
W5 +B2
VOLTAGE
REFERENCE
+B1
DC AMP
THERMOSTAT
+B2
RSW
+B1
GND
FAS
MAIN DC
BACK UP
BATTERY
PROTECT OF REVERSE
CONNECTION
D51,52
FINAL AMP
SURGE
PROTECTOR
FAB
RF AMP
FINAL UNIT
(X45-3740-10)(A/2)
FAG
Q1-3
D10
W3
CURRENT
PROTECTOR
RF DETECTOR
REVERSE
CURRENT
PROTECTION
D4,5
SURGE
PROTECTOR
CHARGE
GND
TX
DRIVE
AMP
D7
BAT
VOLTAGE
REGULATOR
PDT
DC SWITCH
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN19
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN16
Comp.in
Vref
Comp.outVcc
GNDVcont
OUT1
IN1-
IN1+
VEE
TX-RX UNIT
(X57-6270-XX)
(A/2)-CN15
C10
R7
C18
C32 R14 R16
C92 C97 C91 C95 C96 C93 C94
C100
C3
D10
C101
C99
150k
470p
100k
0.1u
R17 C35 R19 C36
C13 C20
L15
L3
F1
2.5A
C49 C51 C50
100p
47u25
0.1u
L6
15n
C41
470p
C124
C59
C123 C118
C46
470p
R24
100k
R23
100k
C79 C77 C80
C105
C78
D7
0.1u 100p 1000u25 470p 470p ZSA5A27
IC3
TA75W01FU
R57
470
C30
0.1u
C29
470p
R58
2.2k
R60
100k
C15
470p
18k 100k 470p 22 470p
R12 R11 C19
R9
C14
T:7.57V
R:0V
T:7.91V
R:0V
T:0.70V
R:0V
T:0.69V
R:0V
T:13.03V
R:13.54V
T:4.26V
R:0V
T:7.61V
R:0V
T:13.05V
R:13.56V

TKR-850
10
3
2
1
BA
27
1
Ox2
Qx11
Ex3
Ex3
26
28
20
21
30
Nx3
Final
(A/2)
Final
(B/2)
E M4 x 14 : N30-4014-46
N M3 x 8 : N67-3008-46
O M2.6 x 6 (Br-Tap) : N87-2606-46
Q M3 x 6 (Br-Tap) : N87-3006-46
Earth spring
(G02-0894-04)
Hardware fixture
(J21-8467-04)
EXPLODED VIEW
Parts with the exploded numbers larger than 700 are not supplied.

TKR-850
11
SPECIFICATIONS (K,C TYPE)
GENERAL
Frequency Range ................................ 450 to 480MHz
Number of Channels ........................... 16 channel
Channel Spacing ................................. Wide : 25kHz Narrow : 12.5kHz
(PLL channel stepping 5kHz/6.25kHz)
Operating Voltage ............................... 13.6V DC±15%
Current Drain
Standby .......................................... 0.8A
Standby w/power save .................. 0.3A (Operating mode DC-IN : Backup, FAN : Temp, SAVE : ON, DISP : OFF)
Receive .......................................... 1.2A
Transmit/Receive ........................... Less than 13A
Duty Cycle
Receive .......................................... 100%
Transmit ......................................... 100% (100% @25W)
Frequency Stability ............................. Less than ±0.00015% –30°C to +60°C (–22°F to +140°F)
Antenna Impedance ........................... 50Ω
Operating Temperature Range ........... –30°C to +60°C (–22°F to +140°F)
Dimensions ......................................... 483 (19) W x 88 (3-1/2) H x 340 (13-1/3) D mm (inch)
Weight ................................................ 9.7kg (21.4 lbs.)
RECEIVER (Measured by TIA/EIA-603)
Sensitivity
12dB SINAD ................................... 0.35µV
20dB Quieting ................................ 0.45µV
Selectivity ........................................... Wide : 83dB (±25kHz) Narrow : 75dB (12.5kHz)
Intermodulation................................... Wide : 78dB (±25kHz/±50kHz) Narrow : 75dB (±12.5kHz/±25kHz)
Hum and Noise ................................... Wide : 50dB Narrow : 45dB
Spurious & Image Rejection ............... 90dB
Audio Output (Ext. Speaker) ............... 4W at 4Ωless than 5% distortion
Audio Distortion (Ext. Speaker) .......... Less than 2.5% at 1000Hz
Band Spread ....................................... 5MHz
TRANSMITTER (Measured by TIA/EIA-603)
RF Power Output ................................ 40W adjustable to 25W (100% duty @25W)
Type of Emission ................................ K : Wide : 16K0F3E Narrow : 11K0F3E
C : Wide : 16K0F3E Narrow : 8K50F3E
Spurious Response ............................. Harmonics : 80dB Others : 75dB
FM Hum and Noise ............................ Wide : 50dB Narrow : 45dB
Audio Distortion .................................. Less than 3% at 1000Hz
Microphone Impedance ...................... 600Ω
Band Spread ....................................... 30MHz

KENWOOD CORPORATION
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan
KENWOOD U.S.A. CORPORATION
P. O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
TKR-850
SPECIFICATIONS (E TYPE)
GENERAL
Frequency Range ........................................ 440 to 470MHz
Number of Channels ................................... 16 channel
Channel Spacing ......................................... Wide : 25kHz Narrow : 12.5kHz (PLL channel stepping 5kHz/6.25kHz)
Operating Voltage ....................................... 13.2V DC
Current Drain
Standby ................................................... 0.8A
Standby w/power save ............................ 0.3A (Operating mode DC-IN : Backup, FAN : Temp, SAVE : ON, DISP : OFF)
Receive ................................................... 1.2A
Transmit/Receive .................................... Less than 13A
Duty Cycle ................................................... Receive : 100% Transmit : 100% (100% @25W)
Frequency Stability ...................................... Less than ±0.00015% –30°C to +60°C
Antenna Impedance .................................... 50Ω
Operating Temperature Range ................... –30°C to +60°C
Dimensions ................................................. 483 W x 88 H x 340 D mm
Weight ........................................................ 9.7kg
RECEIVER (Measured by EN 300 086)
Sensitivity .................................................... 0.45µV
Adjucent Channel Selectivity ...................... 83dB (±25kHz) 75dB (±12.5kHz)
Intermodulation ........................................... 72dB
Spurious & Image Rejection ....................... 90dB
Audio Output (Ext. Speaker) ....................... 4W at 4Ωless than 5% distortion
Audio Distortion (Ext. Speaker) ................... Less than 2.5% at 1000Hz
Band Spread ................................................ 5MHz
TRANSMITTER (Measured by EN 300 086)
RF Power Output ........................................ 40W adjustable to 25W (100% duty @25W)
Modulation Limiting .................................... ±5kHz at ±25kHz ±2.5kHz at ±12.5kHz
Spurious Emission ...................................... –36dBm ≤1GHz –30dBm > 1GHz
FM Noise (EIA) ............................................ 25kHz : 50dB 12.5kHz : 45dB
Modulation Distortion ................................. Less than 3% at 1000Hz
Microphone Impedance .............................. 600Ω
Band Spread ................................................ 30MHz