Th-k2at/k2e/k2et, Schematic diagram, Pq r s t – Kenwood 144MHz FM TRANSCEIVER K2E User Manual

Page 55

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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

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