Kenwood 144MHz FM TRANSCEIVER K2E - Manual (Page 55)

TH-K2AT/K2E/K2ET
SCHEMATIC DIAGRAM
5C
D16
MA2S111
C41
4.7u6.3
R36 10
R35 120k
C40 0.1u
R30
1.2k
R31
2.2k
C33
0.22u35
C35 0.1u35
KTC4082
Q23
R132
2.2k
R131 330k
R130
100
IC3
TA31136FN
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
C174
180p
R135 470k C176 0.1u
C180
120p C191
0.01u
2SC5488
Q24
R134
390k
R133
1k
R124
3.3k
C172 1800p C182 0.1u
C13
0.5p
(B)
C20
8p
C22
18p
R19 120k
2SC4617(R)
Q4
R21 4.7k D7
MA2S111
C27 10u10
R125 560
C45
100p
C46
100p
C44
100p
C52 10p
R38
56k
R20 1k
C34
4.7u6.3
R24 470
C167
0.1u
R118
27k
2SC4617(R)
Q21
C168 0.1u
2SK1830
Q20
C169
0.068u
C170
0.068u
R116
120k
R126 27k
R123
1.8k
C171 1000p
C186
24p
C187
2p C188
24p
C189 1000p
C192 0.01u
C183 0.1u
R128
3.3k
R122
2.7k
R119
1.8k
C50 22p
C51
22p
2SK1830
Q3
R6
1k
C54
1000p
C55
0.01u
C38
0.01u
C43 0.01u
R5
100k
C14
1000p
C15
12p
C178 0.01u C177 22u6.3
R127 47
C11 1000p
C26
1000p
C25
1000p
C30
1000p
C21
1000p
C37
1000p
C42
1000p
C190
0.01u
CP2
3.9k
2SC5488
Q6
C179 0.1u
L8
120n
R12
4
7
C175 22p
C173
180p
L46
560n
CD1
450kHz
2SC5488
Q5
R18 10
C19
15p
R15
5.6k
C17 C18 R14
R17
3.3k
R16
CF1
L72-0968-05
L58 820n
L64
4.7u
C57 10p
R188
47
R8
100k
R189
0
C56
1000p
VR1
500k
C1
0.01u
C4
1000p
D5
HSC277
C5
0.1u
C6
1000p
R4
1k
R11 150k
C10
0.01u
2SC5488
Q2
R10 47
L9
82n
IC1
LMX2316TMX
1 2 3 4 5 6 7 8
9
GND3
10
CE
11
CLK
12
D
ATA
13
LE
14
FO/LD
15
VCC2
16
VP
CP1
2.7k
C24
1000p
R117
2.7k (D)
L53 15n
R32
1k
C194 0.1u
R120
2.7k
C166
0.01u
L45 560n
L1
10u
D1
1SV325
D2
1SV325
L2 47n
L6
10u
C2
1000p
L3 82n
2SC5066(O)
Q1
C8
27p
(G)
C9
27p
(G)
R9 270
L5 10u
R13 6.8k
R22
8.2k
C3
3p
(B) C7
0.5p (B)
D6
1SV305
R7
47k
C124 0.1u
R115
5.6k
R37 56k
Q22
RN2105
L68
X1
12.8MHz
L77-1931-05
VC
GND
R348
220
C161 1000p
CN15 CN17 *
LV
PLL IC
FM IC
450kHz
PLLLD
CLOCK
DATA
PLLEN
2nd L.O.
SHIFT
WIDE/NARROW
CHANGEOVER SW
AF MUTE SW SQV SMV
5R
SQ FILTER
IF AMP
FREQ
VCO
RF AMP
RF AMP
VCO SHIFT CONTROL SW
RIPPLE FILTER
RF AMP
SPEED UP
TRIPLER
AF FILTER
5T
+B
AFM
VO
LIN
5R 5R
5R
KAPC
FINAL
TEMP
BPF/APC
BPF/APC
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SMV
SQV
DATA
CLOCK
AFM
KAPC
SHIFT
PLLEN
PLLLD
+B
5C
FINAL
TEMP
MOD SQV SMV
QT/DQT
NAR
PLLEN
5MS AFM SHIFT
5C
PLLLD
TO
CLOCK
5R D
ATA
VO
LIN
D
ATA 5R
CLOCK PLLLD
5C AFM PLLEN NAR
QT/DQT
SMV SQV VO
LIN
BPF/APC
5R NAR SMV SQV
BPF/APC
VCO FREQUENCY CONTROL
D1,2
VCO MODULATION
D6
D5
FREQUENCY SHIFT
FLO CPO
GND1 GND2
FIN FIN
VCC1 OSCI
PLL LOCK DETECTION
D16
OUTPUT
VCC
FINAL
KAPC
TEMP
1000p 1000p 3.3k 470
OSCIN
OSCOUT MIXOUT
VCC IFIN DEC
FILOUT
FILIN
AFOUT QU
A
D
IFOUT RSSI N-DET N-REC GND MIXIN
4.45V
4.63V 1.58V
3.63V
4.45V
T:0V
R:4.63V
W:111mV
N:4.79V
4.76V
0.53V
4.82V
0.72V
TX-RX UNIT (X57-674X-XX)(A/3)
X57-674 4/5
P Q R S T