Kenwood TH-K2AT, TH-K2E, TH-K2ET SPECIFICATIONS

ANTFILTER

Q12

ANT

TH-K2AT/K2E/K2ET

LEVEL DIAGRAM

50Ω

0.58Vrms

AMP

FM IC

IC3 IC6

Q11

Q10

Q9

vco

All voltage levels must be measured at High power transmission.

The RF and IF sections are measured by using a spectrum analyzer.

After setting the standard (1 kHz, 3 kHz Dev.) deviation, each voltage

of the AF section is measured by using an AF VTVM or osciloscope.

The level for each point is measured without removing parts or cutting

the pattern.

Q24

BPF

-9.83dBm

Q16

vco

Q17

RF(145.99MHz) AF(1kHz)IF(38.85MHz)

-35.83dBm -17.33dBm

-59.33dBm-62.50dBm -31.83dBm-47.83dBm

All voltage levels must be measured after setting the AF output volt-

age at 0.58V rms.

The RF and IF sections are measured by using a spectrum analyzer.

Each voltage of the AF section is measured by using an AF VTVM or

osciloscope.

The level for each point is measured without removing parts or cutting

the pattern.

AF(1kHz) RF(145.99MHz)

Transmitter Section

IC16

MIC

MIC AMP

9.74Vrms 0.84Vrms -18.68dBm 10.50dBm 4.17dBm 15.17dBm 11.00dBm 24.67dBm 20.83dBm 30.50dBm

BPF

ANTFILTER

Receiver Section

ANT SP

-53.00dBm 0.26Vrms 12.09mVrms 0.66Vrms

55

TH-K2AT/K2E/K2ET

BLOCK DIAGRAM

KIN0~3

KYO0~3

PTTI
KIN4

KYO1
KYO2

5T

Q27
2SK1830

WIDE/NARR

NAR

VR6

SW

VR5

SEG0~31
COM0~3

5C

IC1

VSS,DVSS,
AVSS,AVRL

LAMP

CLOCK
DATA
EEPCS
EEPDI

Q6

2SC5488

RF AMP

LPF

LMX2316TMX

PLL IC

VOXIN

INTUP
INTDW

IC8

LOOP
FILTER

MPU

PLLEN
PLLLD
CLOCK
DATA

MOD

VCC,DVCC
AVCC,AVRH
HST(VCC),V3RESET

TONE

D6

1SV305

D1, D2

1SV325

5C

SIGIN

BSFT

NOAA

BTEMP
DCDET

TCXO
X1

12.8MHz

NAR

X0
X1

Q3

2SK1830

SHIFT SW

SHIFT

Q1
2SC5066
(O)

5MS

Q52
RN1107

BEAT SHIFT

OSC

VR1

VR6

Q23
KTC4082

TRIPLER

5R

2nd Local

TONE

DTMF/BEEP

IC5
NJM2107F

HPF

5MV

D74,D75
DA221

LIMITTER

J3

PTT

LAMP

MONI

PTTE/RXD

D48,49
B30-2205-05

LCD ILLMI

X57-674 C/3

Q29,D22,D27
2SC4919
1SS361
RB706F-40

MIC AGC

MICM

D42,43,46
D44,47
B30-2205-05

KEY ILLMI

D24
MA742

VOX DET

IC16

NJM2904V

LIMITTER AMP
SPLATTER

FILTER

Q30

2SC4617(R)

VOX AMP

Q50

2SK1830
KEY ILLMI

SW

X57-674 B/3

Q51

RN4902

LCD ILLMI
SW

LCD

5MV

56

X57-674 A/3

D/A
DTMF/BEEP,TONE

PWM
BPF/APC

A/D
REM,SQ,SM,BATT

H/L
AFM,SPM,MICM,

KAPC,FINAL,CHARGE,
AFAMP,RXLED,BTDET,TXD
5MS,5R,5T,5C(SAVE),VOX,
KYO0~3,VUKEY

H/L
RXD,PTTE,PTTI,

ENCA,ENCB,
PWRSW,KIN0~4,TYPE

IC15

AT25160N

10SI27

EEPROM

IC10

S-80844

CNNBB85

INT

IC11
S-80930
CNNBG80

RESET

D40,41
B30-2156-05
B30-2157-05

5C

TX/RX LED

5M

Q47

RN1701

TX/BUSY
LED SW

5T

RXLED