Th-k2at/k2e/k2et, Block diagram – Kenwood 144MHz FM TRANSCEIVER K2E User Manual

Page 60

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TH-K2AT/K2E/K2ET

57

BLOCK DIAGRAM

J4

Q24

XF1

Q16

Q2

Q5

Q4,D7

LIPPLE
FILTER

RF AMP

RF AMP

D8, D9

Q9

Q10

Q11

Q12

D10

LPF

FINAL AMP

ANT SW

Q58

BIAS SW

DRIVE AMP

PRE-DRIVE

RF AMP

TX/RX SW

Q17

D18,D19

D20,D21

IC3

CD1

CF1

TA31136FN

FM IC

IF AMP

MCF

RF AMP

BPF

BPF

SP MUTE SW

AF AMP

IC6

Q56

Q20

AF MUTE SW

Q21

AF FILTER

LPF

WIDE/NARR
SW

Q22

Q15

SW

B

IC2

APC AMP

NJM2904V

Q14
RN4902

APC SW

APC KILL SW

2SK1830

38.85MHz

3SK318

2SK1215

1SV305

1SV305

XB15A709

2SK3476

2SK2596

2SC4926YD

2SC4617(R)

HSC277

2SC5488

2SC5488

2SC5488

2SC4617

2SK1830

TA7368F

RN2105

SW

Q13

2SK1830

5T

5T

CPH3417

2SK1830

MUTE SW

Q31

38.4MHz

DE-EMPH

+

-

T

2SC5488

CT/DCS/WXA
FILTER

IC17

NJM2902V

5C

5R

5C

5R

5R

5R

5R

BPF/APC

B

5R

AFM

AF AVR

BPF/APC

SPM

TEMP DET

TH1
B57331V

2103J

5R

5R

APC V

D14
MA2S111

FINAL

DTMF/BEEP

SQ,SM

J2

REM

/TXD

AMP

450kHz

(R)

BATT TERMINAL
7.5V Norminal
(6.0 - 9.0V)

WXA SW

2SK1824

Q59

DC IN
13.8V Norminal
(12.0 - 16.0V)

RN2701

XC6202PB
52FR

IC1
TCXO
Q4,5,6
D40,41

Q41

D32

D80

5T SW

Q37, Q38

2SK1830

5R

5T

5M

CHARGE SW

RB051L-40

IC6
D48,49
D42,43,46
D47,44

BATT

CHARGE

5R SW

TK11250

CUCB

5.0V

TK11250
CM

VR1
ENC

AVR

5C SW

PROTECT

CPH3317

2SJ347

Q35

5C

CHARGE

BTDET

Q34

Q9,10,13
D8,10
TH1
IC16
Q47

Q57

D33

IC12

AVR

2SB1184(Q,R)
2SC4617(R)

IC4

5MS SW

Q55

5MV SW

Q36

RB521S-30

5MV

DC-IN DET

RN2105

AF AMP

2SB1184

(Q,R)

PROTECT

5.0V

11.5V

IC3,17
D9,14
Q16,17
Q22,23,24
Q59

AF/LAMP
AVR

RN2105

Q53

PROTECT

THERM DET

IC5
Q30

5MS

2SK1830

B

RB051L-40

Q33

AVR

IC9

ANT SW

D17

HSM88AS

HVC131

ANT SW

D12,D13

BPF/APC

(Ktype only)

VR

ANT

D26
1SS388

D25
MA2S111

CN2

B

PROTECT

D36

RB521S-30

D35

PROTECT

RB521S-30

PROTECT

D30

RB521S-30

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