Kenwood Marine Radio K2E User Manual

144MHz FM TRANSCEIVER

TH-K2AT/K2E/K2ET

SERVICE MANUAL

B51-8658-00 (S) 836

Helical Antenna

(T90-1018-25)

Helical Antenna

(T90-1018-25)

Knob (ENC)

(K29-5159-03)

Knob (VOL)

(K29-5150-03)

Front glass

(B10-2746-03)

Knob

(PTT/LAMP/MON)

(K29-9274-03)

(PTT/LAMP/MON)

(K29-9274-03)

Cap

(SP/MIC/DC IN)

(B09-0675-03)

(SP/MIC/DC IN)

(B09-0675-03)

Cabinet assy

(16key)

(A02-3819-23)

Cabinet assy

(4key)

(A02-3818-23)

Key top (4key)

(K29-9276-02)

Key top (16key)

(K29-9272-02)

TH-K2AT/ K2ET

TH-K2E

CONTENTS

DISASSEMBLY FOR REPAIR ................................... 2

CIRCUIT DESCRIPTION ............................................ 6

SEMICONDUCTOR DATA ...................................... 14

COMPONENTS DESCRIPTION .............................. 15

PARTS LIST ............................................................. 17

EXPLODED VIEW .................................................... 23

PACKING ................................................................. 25

ADJ USTMENT ........................................................ 27

TERMINAL FUNCTION ........................................... 43

PC BOARD

SCHEMATIC DIAGRAM .......................................... 50

LEVEL DIAGRAM .................................................... 55

BLOCK DIAGRAM ................................................... 56

BC-21 (WALL CHARGER) ....................................... 58

PB-43N (Ni-MH BATTERY PACK) .......................... 58

BT-14 (BATTERY CASE) ......................................... 59

PG-4Y (PROGRAMMING INTERFACE CABLE) ..... 59

MCP-1A (MEMORY CONTROL PROGRAM) ......... 59

SPECIFICATIONS ................................. BACK COVER

TX-RX UNIT (X57-674X-XX) (A/ 3) ................... 44

TX-RX UNIT (X57-674X-XX) (B/ 3),(C/ 3) .......... 48

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TH-K2AT/K2E/K2ET

DISASSEMBLY FOR REPAIR

4. Apply the tips of soldering irons to all the four pins of the final

FET at the same time ( ), heat them sufficiently, and remove

Soldering the antenna term inal

1. With the shield cover removed from the antenna terminal

the final FET ( ). (Two persons should be required to do this.)

section, install two screws on the PC board and bring the

PC board into contact with the chassis ( ).

2. Solder the antenna terminal with a soldering iron ( ).

5. Remove all PC boards from the chassis.

6. Confirm that there is no space between the radiation plate

installed on the foil side of the TX-RX PC board (TX-RX unit

A/3) and the PC board ( ). If there is any space between

the radiation plate and PC board, eliminate it by applying

the tip of the soldering iron to the radiation plate.

3. Remove the two screws installed in step 1 above, and install

the two screws again on the PC board together with the

shield cover ( ).

Radiation plate

TX-RX PC board

7. Apply the tip of the soldering iron to the installation side of the

radiation plate of the TX-RX PC board, put a little amount of

solder to the radiation plate that is seen through a square hole

in the final FET installation section and melt the solder ( ).

8. When the solder in step 7 is melted, place the final FET on

the PC board by aligning it with the silk of the final FET

installation section of the PC board ( ).

Replacing the final FET (Q12)

1. Remove the two screws holding the shield cover of the

final FET section ( ).

2. Remove solder from the shield cover completely with a

solder absorber. (E and E3 types only)

3. Remove the shield cover ( ).

9. Release the soldering iron and confirm that the final FET

and radiation plate have been soldered.

10. Solder the four pins of the final FET with the soldering iron.

11. Install all the PC boards.

12. Reinstall the shield cover removed in step 3 above in its

original position and install two screws.

13. Solder the shield cover to the PC board. (E and E3 types

only)

14. Install the chassis on the case assembly and assemble them.

15. Readjust transmission power.

Note: Since the FET is sensitive to static electricity, always

wear a grounding band. Use a highly insulated ceramic

heater solder iron.

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TH-K2AT/K2E/K2ET

DISASSEMBLY FOR REPAIR

(2)By pressing the LCD hardware fixture from the component

side of the TX-RX PCB, you must bent all 4 tabs of the LCD

hardware fixture being visible from the foil side until the

bases of each tabs are folded at least 45 degrees (Fig. 3). If

the bending angle of the tabs of the LCD hardware fixture

is less than 45 degrees, a display error may occur.

Special care and attention required for assem bly

1. Gluing to the key top (MIC elem ent section)

You must also glue on the speaker storage area and heap

the glue up until wealthy glued on the speaker storage area

and the key top for waterproofing the MIC element side of

the key top. (Fig. 1)

Heap the glue up until wealthy glued on the speaker

storage area and the key top (MIC element section).

Min 45

degrees

Bending position

Fig. 1

Fig. 3

2. Bending the LCD hardw are fixture (J 21-8456-03) tabs

(1)Insert the tabs of the LCD hardware fixture into four holes

in the LCD installing position of the TX-RX PCB (TX-RX unit

A/3). (Fig. 2)

3. PTT PCB (TX-RX unit C/ 3) installation procedure

Installing the PTT PCB on the TX-RX PCB and chassis are

as follows:

(1)Insert the PTT PCB connector (CN7) into the TX-RX PCB

connector (CN6) lightly.

(2)Push three parts of the PTT PCB to contact tightly with the

chassis. There may be a small gap between the connectors.

(Fig. 4)

Note: A double-side adhesive tape (J99-0376-04) is used

behind the PTT switch. When reassembling the PTT

PCB to the chassis, press the PTT PCB (under the PTT

switch) so that the tape hold the PCB and chassis

securely.

PTT PCB (C/3)

Chassis

CN6

A bit

clearance

Fig. 2

CN7

PTT switch

Push three parts of the PTT PCB

to contact tightly with the chassis.

PTT PCB (C/3)

Chassis

CN6

clearance

CN7

PTT switch

Fig. 4

(3)Tighten one screw in the PTT PCB.

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TH-K2AT/K2E/K2ET

DISASSEMBLY FOR REPAIR

4. Packing (G53-1572-02) TX/ BUSY lam p installation

procedure

(1)To assure waterproofing, install the packing in the chassis

6. Cautions for installing the chassis on the case assem bly

(1)Verify that the packing (G53-1572-02) TX/BUSY lamp section

is has been past through the hole in the illumination guide

section on the top of the case assembly. (Fig. 7)

groove as shown in Fig. 5. (

)

(2)Install the packing TX/BUSY lamp section on the chassis.

(

)

Packing

PTT

LAMP

Chassis

The packing TX/BUSY lamp section is has

been past through the hole in the illumination

guide section on the top of the case assembly.

Packing

Fig. 7

(2)Align the speaker lead as shown fig.8. Do not place the

leads over the key top section, LCD section or SP/MIC/DC

IN cap section.

Chassis

Fig. 5

5. Packing (G53-1572-02) bottom installation procedure

(1)Before installing the numeric key PCB (TX-RX unit B/3) on

the chassis, push three parts of the packing to contact tightly

with the chassis as shown in Fig. 6. If the packing is not in

contact with the chassis, there may be a gap between the

transceiver bottom case assembly and the battery, and

water may enter through the gap.

Do not fix this part of the

key top to the rib of the

case assembly.

Fig. 8

7. Cautions for installing the key top on the case assem bly

(1)Install the key top keypad section and the power switch

section on the rib of the case assembly.

(2)Do not fix the part between the key top keypad section and

the power switch section to the rib of the case assembly,

but install it as shown in Fig. 8.

Push three parts of the packing to

contact tightly with the chassis.

Clearance NG

Fig. 6

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

A tuning voltage corresponding to the desired signal is

applied to each varicap through the BPF/APC terminal (pin 6)

of the MPU (IC8) to tune to the receive frequency.

Frequency Configuration

The fre que ncy configuration is shown in Figure 1 and

Table 1.

RX : 136.000~173.995MHz(K,K2,M,M2)

144.000~145.995MHz(E,E3)

TX : 144.000~147.995MHz(K,K2)

■ First Mixer

450kHz

The received signal passing through the band-pass filter

(L32, L35) is mixed with the first local signal generated by the

VCO by the first mixer (Q16) to produce a first IF signal (38.85

MHz) (Upper heterodyne).

The first IF signal passes through a MCF (Monolithic crystal

filter: XF1) to remove unwanted components.

The first IF signal passing through the MCF (XF1) is amplified

by an IF amplifier (Q24) and the resulting signal enters the FM

IC (IC3).

136.000~173.995MHz(M,M2)

ANT

144.000~145.995MHz(E,E3)

1st MIX

MCF

AMP

MIX, IF,

DET

ANT

AMP

38.85MHz

38.4MHz

Tripler

x 3

FINAL

DRIVE

TCXO 12.8MHz

MIC

174.850~212.845MHz

(K,K2,M,M2)

182.850~184.845MHz

(E,E3)

PRE

PLL

VCO

MIC

AMP

DRIVE

Item

Rating

144.000~147.995MHz(K,K2)

136.000~173.995MHz(M,M2)

144.000~145.995MHz(E,E3)

Nominal center frequency (fo) 38.85MHz

Pass bandwidth

Attenuation bandwidth

Ultimate attenuation

Spurious response

Ripple

±6.0kHz or more at 3dB

±25kHz or less at 35dB

70dB or more (fo –910 kHz)

40dB or more (fo +1MHz)

1dB or less

Fig. 1 Frequency configuration

Double super heterodyne

Reception method 1st IF Frequency 38.85MHz (Upper)

2nd IF Frequency 450kHz (Lower)

Insertion loss

4dB or less

Transmission method VCO direct oscillation amplification

Terminating impedance

610Ω ±5% // 3pF ±0.5pF

Modulation

Variable reactance phase modulation

Table 2 MCF (L71-0619-05) characteristics (TX-RX unit XF1)

Table 1 Basic configuration

Item

Rating

Nominal center frequency (fo) 450kHz

Receiver System

■ Front End

The received signal from the antenna passes through a low-

pass filter and then through a transmission/reception switching

circuit (antenna switch) and enters the band-pass filter (L40,

L41, L38).

3dB bandwidth

50dB bandwidth

Ripple

±6.5kHz or more

±15.5kHz or less

2dB or less (fo ±6.5kHz)

55dB or more

Guaranteed attenuation

(fo ±18kHz to ±33kHz)

The signal passing through the band-pass filter (L40, L41,

L38) is amplified by with an RF amplifier (Q17), passes through

a band-pass filter (L32, L35) and enters the first mixer (Q16).

These band-pass filters are tuned to a desired frequency

by varicaps (D21, D20, D19, D18).

50dB or more (fo

4dB or less

1.5kΩ

100kHz)

Insertion loss

I/O matching impedance

Table 3 Ceram ic filter (L72-0968-05) characteristics (TX-RX unit CF1)

ANT

BPF

L41,L40,L38

RF AMP

Q17

BPF

L32,L35

MIXER

Q16

MCF

XF1

IF AMP

Q24

FM IC

IC3

AF AMP

IC6

ANT

IF AMP,

DET

LPF

38.85MHz

2nd Local OSC

Tripler

x 3

Q23

D21

D20

D19

D18

TCXO

12.8MHz

1st Local OSC

(PLL)

PLL

VCO

BPF/APC

Tuning voltage

MPU

IC8

Fig. 2 Receiver section configuration

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

■ IF Circuit

FM IC and band-pass filter consisting of R125, R126, R135,

C173, C174. The noise component is rectified in the FM IC to

produce a DC voltage, which is output from the N-REC terminal

(pin 14) of the FM IC as squelch voltage.

The squelch voltage enters the SQ terminal (pin 48) of the

MPU (IC8) and is compared with the reference voltage preset

in the MPU to control audio signal ON/OFF.

The first IF signal (38.85 MHz) amplified by the IF amplifier (Q24)

and the second IF signal (38.4 MHz) generated by tripling the 12.8

MHz reference oscillator frequency of the TCXO (X1) by Q23, are

mixed in the FM IC to produce a second IF signal (450 kHz) (Lower

heterodyne).

The second IF signal passes through a ceramic filter (CF1)

to remove unwanted components.

The second IF signal passing through the ceramic filter (CF1)

passes through the IF amplifier in the FM IC again and is

detected to produced an audio signal.

When "L" is output from the AFM terminal (pin 9) of the MPU,

the AF mute switch (Q20) is activated to mute the audio signal.

■ S Meter Circuit

The S meter voltage is output from the RSSI terminal (pin

12) of the FM IC (IC3) and input to the SM terminal (pin 49) of

the MPU. Then the voltage is converted from analog to digital

in the MPU to control the S meter display on the LCD.

VOL IN

■ Squelch and Mute Circuit

A noise component is obtained by passing FM detection

output (FM IC pin 9) through an operational amplifier in the

AFM

Q20

AF MUTE

SWITCH

SMV

SQV

IC8

MPU

CD1

AF OUT

Q21

AF FILTER

1st IF input

(38.85MHz)

LPF

RSSI

MIX

Noise

com p

Quadrature

detector

IC3

FM IC

Rectifier

Noise

AMP

Buffer

IF AMP

Local

OSC

Inverter

AMP

R135

R125

C173

C174

R126

2nd local OSC

(38.4MHz)

CF1

450kHz

Fig. 3 IF, Squelch, Mute and S m eter circuit

IC3

FM IC

■ AF Am plifier

Q21

Q20

The detected audio signal passes through an AF filter (Q21)

and enters an AF mute switch (Q20).

FILTER

AF MUTE

SWITCH

AF OUT

After passing through the AF mute switch (Q20), the signal

passes through an AF volume (VR201) and is amplified to a

specified output level with an AF amplifier (IC6).

The audio signal amplified with the AF amplifier (IC6) is

output through an internal speaker or an external speaker

jack (J4).

SPG

VR201

AF VOLUME

REM/TXD

SPK

IC6

AF AMP

J 4

SP J ACK

AFO

DTMF/BEEP

The beep tone and the DTMF signal are output from the

DTMF/BEEP terminal (pin 40) of the MPU (IC8), enters the AF

amplifier (IC6) and is output as a monitor tone.

IC8

REM

MPU

Fig. 4 AF am plifier

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

The transmission/reception switching circuit consists of D10,

L19, D12 and D13. These diodes are turned ON in transmit

mode and OFF in receive mode to switch signals.

Transm itter System

■ Microphone Am plifier Circuit

The audio signal from the microphone passes through a

high-pass filter (IC5) and enters a microphone amplifier (IC16).

The signal passes through a pre-emphasis circuit, limiter

amplifier and splatter filter inside the microphone amplifier.

The splatter filter will remove distortion outside the audio band.

RF AMP

MIC

IC5

IC16

MIC

AMP

HPF

VCO

RF AMP

VR5

MAX DEV

IC16

MIC AMP

ANT

MIC

IC5

Lim iter

Q11

DRIVE AMP

D10,L19

D12,D13 LPF

HPF

VCO

ANT

Pre-

em phasis

Splatter

filter

Q10

DRIVE AMP

Q12

POWER AMP

Fig. 5 Microphone am plifier circuit

■ Modulation Circuit

Fig. 6 Modulation, Drive, Final and

Transm ission/ reception sw itching circuit

The audio signal amplified by the microphone amplifier

(IC16) pas s e s through a s e m i-fixe d volum e (VR5) for

modulation adjustment, and goes to the VCO modulation

varicap (D6) for variable reactance phase modulation.

■ APC Circuit

The APC (Automatic Power Control) circuit is used to obtain

a stable transmission power and controls transmission output

by detecting the drain current of Q11 and Q12.

The transmission output can be changed in three levels:

High, Mid, and Low.

The reference voltage is output from the BPF/APC terminal

(pin 6) of the MPU (IC8) and the detection voltage generated by

R70, R71 and R72 are fed to the APC differential amplifier (IC2).

The voltage in proportion to the diffe re nce be tw e e n

reference voltage and detection voltage is output from the

BOUT terminal (pin 7) of IC2 as an APC voltage.

ANT

■ Drive and Final Circuit

The output signal from VCO (Q1) passes through an RF

amplifier (Q2, Q5, Q9) and drive amplifier (Q10, Q11), and is

amplified by a power amplifier (Q12).

■ Transm ission/ Reception Sw itching Circuit

The signal amplified by the power amplifier (Q12) passes

through a transmission/reception switching circuit and a low-

pass filter, and is fed to the antenna.

LPF

D10

Q12

Q11

Q10

Q58

Q15

Q55

IC2

APC AMP

AOUT

A–IN

A+IN

GND

V+

Q14

BOUT

B–IN

B+IN

THERM

KAPC

Q13

BPF/APC

FINAL

IC8

MPU

Fig. 7 APC and Tem perature protection circuit

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

The APC voltage controls the gate voltage of Q11 and Q12,

and keeps transmission output stable.

amplifying VCO output with an RF amplifier (Q6) and dividing

it with the PLL IC.

The MPU detects power supply voltage and controls Q58

by transmission power supply voltage and transmission power.

For example, if the power supply voltage during transmission,

is equal to or higher than approx. 10.5 V and if power is at Mid

or Low level, the APC voltage level applied to Q12 is reduced

by Q58.

The PLL synthesizer with 5 kHz and 6.25 kHz step is

configured by comparing phases of the reference frequency

and comparison frequency.

The phase difference between reference frequency and

comparison frequency passes through a charge pump in the

PLL IC, then ripples are removed with a loop filter with low-

range passing characteristics to produce VCO control voltage

(lock voltage).

■ Tem perature Protection Circuit

To prevent thermal destruction of the power amplifier (Q12),

this circuit reduces APC voltage when Q12 temperature rises.

The MPU (IC8) detects temperature with a thermistor (TH1)

and controls reference voltage to the APC circuit.

■ VCO Circuit

The VCO produces a desired frequency directly with a

Colpits oscillation circuit containing an oscillation transistor (Q1)

used for both transmission and reception.

The VCO control voltage is applied to varicap (D1, D2) to

produce a desired frequency.

The SHIFT terminal (pin 113) of the MPU (IC8) goes "H"

during reception, and the shift control switch (Q3) is turned

ON to change oscillation frequency.

PLL System

■ PLL Circuit

A reference frequency of 5 kHz or 6.25 kHz is produced by

dividing the 12.8 MHz reference frequency of the TCXO (X1)

with PLL IC (IC1). Comparison frequency is produced by

VCO

5/0V

Ripple

Filter

TCXO

PLL

5/0V

OSC

Buff

Am p

D8,D9

IC1

1~5V

D1,D2

TCXO

12.8MHz

5MS

5/0V

12.8MHz

LOOP

FILTER

PLL IC

5T 5/0V

5R 5/0V

MOD

CLOCK

DATA

SHIFT

H/L

LPF Q6

Am p

Fo/LD

Rectifier

MOD

Fig. 8 PLL and VCO circuit

■ Unlock Detection Circuit

When the PLL is unlocked, the waveform of the pulse

output from the Fo/LD terminal (pin 14) of the PLL IC (IC1) is

rectified with R32, D16, R35 and C40, and the Fo/LD terminal

is made “L” level. The voltage at the Fo/LD terminal is

de te cte d by the MPU to control trans m is s ion/re ce ption

switching timing.

IC1

PLL IC

R35

C40

D16

102

Fo/LD

PLL LD

R32

IC8

MPU

Fig. 9 Unlock detection circuit

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

■ Pow er Supply Sw itching Circuit

Pow er Supply Circuit

The voltage supplied through the battery terminal or DC IN

terminal is branched in the power supply switching circuit as

shown in Fig.10 and then supplied to the required components.

■ Charging Circuit

When an external power supply is connected to the DC IN

terminal, the constant-current circuit consisting of Q33 and

D31 provides a constant current of approx. 110 mA to the Ni-

MH battery.

■ Battery Type Recognition Circuit

When the battery pack is attached to the transceiver, the

batte ry type is re cognize d w ith the T te rm inal on the

transceiver. This battery type recognition activates charging

for the Ni-MH battery pack and displaying the battery meter.

If no external power supply is connected to the DC IN

terminal, the constant-current circuit does not function.

IC8

MPU

BTEMP

Q36

2SJ347

THERM

DET

DCDET

Q41

RN2105

VR1

ENC

BTDET

5MS

5MS SW

D35

RB521S-30

BATT TERMINAL

7.5V Norminal

(6.0 - 9.0V)

PROTECT

Q57

RN2105

IC9

TK11250

AVR

5.0V

Q35

2SK1830

DC-IN

DET

Q33

D33

D30

IC1

2SB1184

RB051L-40

RB521S-30

TCXO

(Q,R)

BATT

CHARGE

5C SW

Q4,5,6

D40,41

PROTECT

D31

DA221

IC5

Q30

Q53

RN2701

IC12

TK11250

CUCB

Q37, Q38

2SB1184

(Q,R)

2SC4617(R)

AF/LAMP

AVR

CONSTANT

CURRENT

5MV

D32

RB051L-40

IC6

Q34

2SK1830

D48,49

D42,43,46

D47,44

5R SW

5MV SW

IC3,17

D9,14

AVR

5.0V

CHARGE

PROTECT

CHARGE

Q16,17

Q22,23,24

D36

RB521S-30

Q59

AF AMP

DC IN

13.8V Norminal

(12.0 - 16.0V)

PROTECT

Q55

IC4

CPH3317

XC6202PB

52FR

AVR

Q9,10,13

D8,10

TH1

D80

RB521S-30

PROTECT

5T SW

IC16

11.5V

Q47

Fig. 10 Charging and Pow er supply sw itching circuit

Control System

■ Reset and Backup Circuit

When power is supplied to the transceiver, the 5M voltage

goes “H” as C303 is charged.

A rising edge of the 5M voltage is detected by the voltage

detection IC (IC11) and when its output (RESET) goes “H”,

the reset status of the MPU is released.

If the supplied voltage to the transceiver is reduced and

the 5M voltage falls below the detection voltage of the voltage

de te ction IC (IC10), the MPU de te cts it by an inte rrupt

processing, backs up data in EEPROM (IC15) and turns the

power off.

Tim ing chart

IC15

EEPROM

Power

OFF

IC9

D35

R244

C303

L63

5M 5V

OUT

AVR

IC8

MPU

BATT

IC11

IC10

R243

OUT

RESET

RESET 5V

C307

INT

INT 5V

Fig. 11 Reset and Backup circuit

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

■ Voltage Detection Circuit

■ LED Drive Circuit

Various voltages are input to the A/D port of the MPU (IC8)

for processing.

The LCD and key illumination LEDs are lighted by controlling

Q51 for the LCD and Q50 for keys according to the output

voltage from the AF/LAMP AVR (Q37).

The BUSY and TX illumination LEDs are lighted by controlling

Q47.

Battery voltage is divided with resistors (R240, R241) and

enters the BATT terminal (pin 52) of the MPU.

Battery voltage is used for battery meter indication during

transmission or for alert tone processing when an abnormal

power supply voltage (approx. 16.5 V or higher) is applied.

Squelch voltage becomes DC voltage by detecting changes

in noise voltage in the FM IC (IC3), and the signal is used for

squelch control.

Q51

D33

Q37

The S meter voltage is output from the RSSI pin of the FM

IC to control S meter display.

Detection of thermistor voltage (temperature) in the Ni-MH

battery during charging, detection of remote microphone key

pressing and VOX voltage monitoring are performed through

each A/D port of the MPU.

Q38

D46

D48

D49

D42

D43

D44

D47

AF AMP

Q50

■ Battery Save Circuit

LAMP

If there is no signal (squelch off, scan off or no key operation)

for longer than 10 seconds, the transceiver will enter the

battery save mode.

Battery save operation is performed by controlling Q57 with

an output signal from the 5C (SAVE) terminal (pin 15) of the

MPU.

IC8

MPU

D41

RX LED

Q47

BUSY LED

R227

R226

D40

TX LED

The 5C ON/OFF cycle ratio during battery saving can be set

from a transceiver menu.

Fig. 13 LED drive circuit

5MS

Q41

Q57

5MS

5C (SAVE)

IC8

MPU

Fig. 12 Battery save circuit

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

■ Key and Encoder Input Circuit

The POWER key is assigned to the interrupt port (pin 95) of

the MPU.

Other keys composes a matrix and key presses are detected

by scanning them by software.

The PTT key is assigned to the dedicated port (pins 13, 14)

of the MPU.

The encoder reads data using the interrupt port (pins 35

and 36) of the MPU.

16 key (K, K2, M, M2 and E3 types)

IC8

MPU

KIN0 KIN1 KIN2 KIN3 KIN4

KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI PTTE

ENCB ENCA

95 14 13

LAMP

MONI

SET

VFO

CALL

POWER

ROTARY

ENCODER

∗

J 3

4 key (E type)

IC8

MPU

KIN0 KIN1 KIN2 KIN3 KIN4

KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI PTTE

ENCB ENCA

95 14 13

VFO

CALL

LAMP

MONI

SET

POWER

ROTARY

ENCODER

J 3

Fig. 14 Key and Encoder input circuit

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TH-K2AT/K2E/K2ET

CIRCUIT DESCRIPTION

■ CTCSS/ DCS

■ DTMF

The encode signal is generated by the MPU (IC8) and output

from the TONE terminal (pin 41) of the MPU.

The unwanted high-frequency components of the encode

signal output from the MPU are removed with a low-pass filter,

and applied to VCO modulation input (MOD) and TCXO VC

terminal for modulation.

The VCO and TCXO modulation levels are adjusted by VR6

to produce flat modulation characteristics in low and high

ranges.

The DTMF signal is generated by the MPU (IC8) and is

output from the DTMF/BEEP terminal (pin 40) of the MPU.

The DTMF signal is mixed with an audio signal at the input

side of the AF amplifier (IC6), and is output as a monitor tone.

The DTMF signal is mixed with a modulation signal at the

input side of pre-emphasis in the microphone amplifier (IC16)

and used as a transmit signal.

■ VOX

The decode signal is input to the SIGIN pin (pin 47) of the

MPU after the waveform of the audio signal from the FM IC is

rectified with a CTCSS/DCS filter (IC17). Then the set CTCSS

tone frequency and DCS code are detected by digital signal

processing in the MPU to control muting.

The IC5 and Q30 amplify the audio signal captured in the

microphone, and then the signal is converted into the DC

Voltage D24 rectifies.

The DC voltage activates the MPU (IC8), and the VOX starts.

■ Weather Alert (K and K2 types only)

The IC17 apmlifies the detected signal from the FM IC (IC3),

and the MPU (IC8) processes the signal. This signal processing

activates Weather Alert function.

TCXO

LPF

VR6

Q30

D24

TONE

VOX IN SIG IN

IC8

IC17

IC3

CTCSS/DCS

FILTER

AMP

111

MOD

MPU

VCO

NOAA

K, K2 types only

MIC

IC16

AMP

DTMF/BEEP

MIC

IC5

VOL OUT

IC6

AF AMP

HPF

Vin

Fig. 15 CTCSS/ DCS, DTMF, VOX, Weather alert

5MC

■ Serial Control

Serial control must be enabled from a transceiver menu so

that the REM/TXD pin of the speaker jack (J4) and the PTT

(RXD) pin of the microphone jack (J3) function as TXD and

RXD, respectively, when communicating with a personal

computer.

IC5

HPF

PTT

MIC

–

J 3

MIC

MIC J ACK

5MS

SPG

PTTE

REM/TXD

SPK

REM

J 4

SP J ACK

TXD

RXD

AFO

IC8

MPU

POUT

IC6

AF AMP

Fig. 16 Serial control

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TH-K2AT/K2E/K2ET

SEMICONDUCTOR DATA

MPU : 90522BPFFG139 (IC8)

■ Pin function

No.

Name

I/O

Function

I/O

Function

Name

48 SQ

Noise voltage input for squelch (A/D)

RSSI voltage input for S-meter (A/D)

Microphone voltage input for VOX (A/D)

TX temperature compensation input(A/D)

Battery voltage input (A/D)

CLOCK

DATA

EEPDI

EEPCS

VOX

Common serial clock output

Common serial data output

Data input from EEPROM

Chip select output to EEPROM

VOX power supply switch

49 SM

50 VOXIN

51 THERM

52 BATT

L:ON

Detection of thermistor voltage (temperature)

in the Ni-MH battety (A/D)

BPF tuning voltage output, APC voltage

output (PWM)

53 BTEMP

54 VCC

BPF/APC

Positive power supply

KAPC

VCC

APC ON/OFF switch

Positive power supply

AF mute switch

L:APC ON

Battery charge circuit power supply switch

H:ON

55 CHARGE

56 LAMP

57 AFAMP

AFM

L:Mute

H:Mute

Lamp power supply switch

H:ON

10 SPM

11 RXD

12 TXD

Speaker mute switch

AF am plifie r/Lam p AVR pow e r s upply

UART data input line from PC (9600bps)

UART data output line to PC (9600bps)

switch

H:ON

58 NAR

Wide/Narrow switching

LCD common output 0

LCD common output 1

LCD common output 2

LCD common output 3

GND

H:Narrow

13 PTTE

14 PTTI

15 5C(SAVE)

External [PTT] key input

[PTT] key input

L:ON

59 COM0

60 COM1

61 COM2

62 COM3

63 VSS

Save power supply switch

Gate bias control of TX final amplifier

L:Bias ON

16 FINAL

17 SEG0

18 SEG1

19 SEG2

20 SEG3

21 SEG4

22 SEG5

23 SEG6

24 SEG7

25 SEG8

26 SEG9

27 SEG10

28 SEG11

29 SEG12

30 SEG13

31 SEG14

32 SEG15

33 VSS

LCD segment output 0

LCD segment output 1

LCD segment output 2

LCD segment output 3

LCD segment output 4

LCD segment output 5

LCD segment output 6

LCD segment output 7

LCD segment output 8

LCD segment output 9

LCD segment output 10

LCD segment output 11

LCD segment output 12

LCD segment output 13

LCD segment output 14

LCD segment output 15

GND

64 SEG16

65 SEG17

66 SEG18

67 SEG19

68 SEG20

69 SEG21

70 SEG22

71 SEG23

72 SEG24

73 NC

LCD segment output 16

LCD segment output 17

LCD segment output 18

LCD segment output 19

LCD segment output 20

LCD segment output 21

LCD segment output 22

LCD segment output 23

LCD segment output 24

Not used

74 NC

Not used

75 SEG25

76 SEG26

77 SEG27

78 SEG28

79 SEG29

80 SEG30

81 SEG31

82 V0

LCD segment output 25

LCD segment output 26

LCD segment output 27

LCD segment output 28

LCD segment output 29

LCD segment output 30

LCD segment output 31

Not used

Power supply stabilization (Connected to

VSS through 0.1uF)

34 COR1

35 ENCA

36 ENCB

37 5MS

Encoder A side input

83 V1

Not used

Encoder B side input

84 V2

Not used

5MS main power supply switch L:ON

Reference voltage input for DAC

Ground for DAC

85 V3

LCD drive power supply 3

Not used (VCC)

38 DVCC

39 DVSS

86 HST(VCC)

87 MD2

88 MD1

89 MD0

90 RESET

91 VSS

L fixed

DTMF/

Encode waveform output of DTME/BEEP/

1750Hz (D/A)

H fixed

BEEP

H fixed

Encode waveform output of CTCSS/DCS

(D/A)

41 TONE

Reset input

L:Reset

GND

42 AVCC

43 AVRH

44 AVRL

45 AVSS

Positive power supply for ADC

Reference voltage input for ADC

Ground reference voltage input for ADC

Ground for ADC

92 X0

System clock (7.9872MHz)

Positive power supply

93 X1

94 VCC

95 PWRSW

96 INTUP

97 INTDW

Power switch interrupt input ( )

Remote control microphone key voltage

input (A/D)

↓

46 REM

47 SIGIN

Power supply voltage interrupt input ( )

↑

Power supply voltage interrupt input ( )

Decode waveform input of CTCSS/DCS

(A/D)

↓

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TH-K2AT/K2E/K2ET

SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION

No.

COMPONENTS DESCRIPTION

I/O

Function

DC IN detection interrupt input ( )

Name

↓

TX-RX UNIT (X57-674X-XX)

98 DCDET

L:DC IN connected

Ref. No. Use/Function

Operation/Condition/Compatibility

99 RXLED

100 BSFT

101 PLLEN

102 PLLLD

103 KIN0

104 KIN1

105 KIN2

106 KIN3

107 KIN4

108 TYPE

109 VUKEY

110 MICM

111 NOAA

112 5R

Busy LED output

H:ON

IC1

PLL IC

Beat shift swiching output

Serial enable output to PLL IC

APC differential

amplifier

IC2

Lock detection input from PLL IC H: Lock

Key matrix input 0

IC3

IC4

IC5

IC6

IC8

IC9

FM IC

11.5V AVR

HPF

Key matrix input 1

Active filter

Key matrix input 2

AF amplifier

MPU

Key matrix input 3

Key matrix input 4

5.0V AVR

4.4V voltage

detection

3.3V voltage

detection

5.0V AVR

EEPROM

Market code bit input

Detection of 4 key or 16 key

IC10

IC11

MPU INT voltage detection

MPU Reset voltage detection

Microphone mute switch

1050Hz tone detection input

RX power supply switch

VCO shift switch

H:Mute

L:ON

IC12

IC15

IC16

113 SHIFT

114 5T

L:TX, H:RX

L:ON

TX power supply switch

Key matrix output 0

Key matrix output 1

Key matrix output 2

Key matrix output 3

GND

MIC amplifier Limiter, splatter filter

115 KOUT0

116 KOUT1

117 KOUT2

118 KOUT3

119 VSS

CTCSS/DCS/WX

Active filter

filter

IC17

VCO

RF amplifier

120 BTDET

Battery detection switch

L:ON

VCO shift

On RX

control switch

Ripple filter

Q5,6,9 RF amplifier

Q10,11 Drive amplifier

Q12

Power amplifier

APC circuit

Q13

On TX

operation switch

APC output

switch

Q14

Q15

Q10 operation

switch

Q16

Q17

1st mixer

RX 1st amplifier

Audio mute

switch

Q20

Q21

Q22

Audio mute when off

Active filter

Audio filter

Wide/narrow

On when wide is selected

changeover switch

Tripler

Q23

Q24

2nd local

IF amplifier 1st IF 38.85MHz

Wide/narrow

Q27

Q29

Q30

On when wide is selected

changeover switch

MIC mute

switch

Mutes when ON

VOX detection

amplifier

Q56 operation

switch

Q31

Q33

Off when the speaker outputs audio

Charge switch

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TH-K2AT/K2E/K2ET

COMPONENTS DESCRIPTION

Ref. No. Use/Function

Operation/Condition/Compatibility

Ref. No. Use/Function

Operation/Condition/Compatibility

Battery

Q33 operation

Reverse current

Q34

On when charging

D33

switch

prevention

Q35

Q36

DC IN detection H: DC IN detection

AVR

D34

Ni-MH temperature On when temperature detection is

constant-voltage

detection

activated

Reverse current

D35

Battery

DC IN

AF amplifier/

Lamp AVR

prevention

Q37

Reverse current

D36

Q37 operation On when the speaker outputs audio or

switch lamp lights

prevention

Q38

Q41

Q47

D40

D41

TX LED

Lights on TX

Lights on RX

5MS switch On when 5MS is applied

TX/BUSY LED

BUSY LED

D42-44 Key illumination

D46,47 LED

Key backlight illumination

LCD backlight illumination

switch

Q50

Q51

Q52

Q53

Q55

Key LED switch On when the key LED lights

LCD LED switch On when the LCD LED lights

Beat shift switch

LCD illumination

D48,49

LED

Key type

D60

5R/5MV switch On when 5R or 5MV is applied

detection

5T switch

Speaker mute

switch

On when 5T is applied

market code

D62-65

detection

Q56

Q57

Q58

Reverse current

D69-72

Key matrix

5C switch

Q12 gate

On when 5C is applied

prevention

D73

Voltage drop

Off when High power is selected

voltage switch

WX detection

amplifier

D74,79 Limiter

Reverse current

prevention

Q59

D80

VCO frequency

control

D1,2

Frequency shift

VCO modulation

Speed up

RF switch

Ripple filter

On TX

On RX

D10-13 Antenna switch On TX

Reverse current

D14

APC reference voltage

prevention

APC output

voltage limiter

PLL lock detection

Over input

protection

D15

D16

D17

D18-21 RX BPF tuning

D22

MIC mute control

VOX detection

rectification

Speaker mute

speed up

D24

D25

D26

D27

C246 discharge

MIC ALC

rectification

Reverse current

prevention

D30

D31

D32

Charge current

Constant-current charge

DC IN

Constant-current

circuit

Reverse current

prevention

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TH-K2AT/K2E/K2ET

PARTS LIST

L: Scandinavia

Y: PX (Far East, Hawaii) T: England

Y: AAFES (Europe)

K: USA

P: Canada

E: Europe

M: Other Areas

New Parts.

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.

indicates safety critical components.

∗

X: Australia

TH-K2AT/ K2E/ K2ET (Y50-580X-XX)

TX-RX UNIT (X57-674X-XX)

New

Ref. No. Address

Parts No.

Description

Destination

Ref. No. Address

Parts No.

Description

KEY TOP(16KEY)

KNOB(PTT/LAMP/MONI)

KEY TOP(4KEY)

Destination

parts

1A,1C

K29-9272-02

K29-9274-03

K29-9276-02

K,K2,M

M2,E3

TH-K2AT/K2E/K2ET

3A,2G

3A,3C

A02-3817-02

CABINET ASSY(BATTERY CASE)

K2,M2

K,K2,M

M2,E3

A02-3818-23

A02-3819-23

A10-4066-11

CABINET ASSY(4KEY)

CABINET ASSY(16KEY)

CHASSIS

2B,2D

1B,1D

1A,1C

2A,2C

N09-1492-05

N14-0569-04

N14-0573-04

N79-2035-46

N79-2040-45

PAN HEAD SCREW(SMA)

CIRCULAR NUT(VOL/ENC)

CIRCULAR NUT(SMA)

PAN HEAD TAPTITE SCREW(PCB)

PAN HEAD TAPTITE SCREW(HOLDER,R PANEL)

3B,3D

A82-0053-02

REAR PANEL

1B,1D

1A,1C

1B,1D

2B,2D

1B,1D

B09-0675-03

B10-2746-03

B11-1805-03

B11-1806-04

B38-0881-05

CAP(SP/MIC/DC IN)

FRONT GLASS

ILLUMINATION GUIDE(LCD)

FILTER(LCD)

3A,3C

2A,2C

N82-2007-46

N09-2433-05

PAN HEAD TAPTITE SCREW(CASE)

PAN HEAD TAPTITE SCREW(FINAL FET)

LCD

2B,2D

R39-0602-05

VARIABLE RESISTOR

B62-1695-00

B62-1696-00

B62-1697-00

B62-1699-00

INSTRUCTION MANUAL(CHINESE)

INSTRUCTION MANUAL(ENGLISH)

INSTRUCTION MANUAL(SPANISH)

INSTRUCTION MANUAL(GERMAN)

1A,1C

2F,3G

T07-0341-15

T90-1018-25

SPEAKER

HELICAL ANTENNA ACCESSORY

1E,1G

K,K2,E

E,E3

W08-0959-15

W08-0960-15

W09-0991-05

CHARGER(230V/13.8V) ACCESSORY

CHARGER(120V/13.8V) ACCESSORY

BATTERY ASSY(7.2V/1100MAH) ACCESSORY K,M,E

BATTERY ASSY(7.2V/1100MAH) ACCESSORY E3

M,E,E3

B62-1702-00

B62-1757-00

B62-1758-00

B72-2128-04

INSTRUCTION MANUAL(ITALIAN)

INSTRUCTION MANUAL(FRENCH)

INSTRUCTION MANUAL(DUTCH)

MODEL NAME PLATE(TH-K2AT)

E,E3

K,K2,M

TX-RX UNIT (X54-674X-XX)

0-11 : K, K2 0-21 : M, M2 2-71 : E 2-72 : E3

D40

D41

D42-44

B30-2156-05

B30-2157-05

B30-2205-05

LED(RED)

LED(YELLOW)

LED(YG)

B72-2129-04

B72-2193-04

MODEL NAME PLATE(TH-K2E)

MODEL NAME PLATE(TH-K2ET)

K,K2,M

2B,2D

2A,2C

2B,2D

1A,1C

E04-0443-05

E23-1234-04

E29-1199-04

E37-1106-05

RF COAXIAL RECEPTACLE(SMA)

TERMINAL(BATTERY)

INTER CONNECTOR(LCD)

D42,43

D46

D46,47

B30-2205-05

LED(YG)

LEAD WIRE WITH CONNECTOR(SP)

K,K2,M

2A,2C

2B,2D

F10-2464-04

F10-2465-04

F15-1008-04

SHIELDING COVER(FINAL FET)

SHIELDING COVER(ANT TERMINAL)

SHADOW PLATE(LCD)

D48,49

B30-2237-05

LED(YG)

G10-1317-04

G53-1529-04

G53-1572-02

G53-1589-03

FIBROUS SHEET(SP NET)

PACKING(VOL/ENC)

PACKING(CASE)

CK73HB1C103K

CK73HB1H102K

CC73GCH1H030B

CK73HB1H102K

CK73HB1A104K

CHIP C

0.010UF K

3B,3D

2A,2C

2B,2D

1000PF

3.0PF

1000PF

0.10UF

PACKING(SP/MIC)

H52-1960-02

H52-1961-02

H52-1962-02

H52-2009-02

H12-3146-01

ITEM CARTON CASE(TH-K2AT)

ITEM CARTON CASE(TH-K2E)

ITEM CARTON CASE(TH-K2ET)

ITEM CARTON CASE(TH-K2AT)

PACKING FIXTURE

K,M

K2,M2

K,M,E

C8,9

C10

C11

CK73HB1H102K

CC73HCH1H0R5B

CC73GCH1H270G

CK73HB1C103K

CK73HB1H102K

CHIP C

1000PF

0.5PF

27PF

0.010UF K

1000PF

H12-3146-01

H12-3147-03

PACKING FIXTURE

K2,M2

C13

C14

C15

C17,18

C19

CC73GCH1H0R5B

CK73HB1H102K

CC73HCH1H120J

CK73HB1H102K

CC73HCH1H150J

CHIP C

0.5PF

1000PF

12PF

2A,2C

1B,1D

2E,3G

2A,2C

3E,2G

J19-5451-03

J21-8456-03

J29-0709-04

J30-1284-04

J69-0342-05

HOLDER(TERMINAL)

HARDWARE FIXTURE(LCD)

1000PF

15PF

BELT HOOK ASSY

SPACER(PTT KNOB)

HANDSTRAP

ACCESSORY

M,M2,E

C20

C21

C22

C24-26

C27

CC73HCH1H080D

CK73HB1H102K

CC73HCH1H180J

CK73HB1H102K

C92-0628-05

CHIP C

CHIP-TAN

8.0PF

1000PF

18PF

J69-0342-05

J82-0076-05

J99-0376-04

K29-5150-03

K29-5159-03

HANDSTRAP

FPC(VOL/ENC)

ADHESIVE TAPE

KNOB(VOL)

2B,2D

3A,3C

1B,1D

1000PF

10UF 10WV

1000PF

KNOB(ENC)

C30

CK73HB1H102K

CHIP C

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

PARTS LIST

TX-RX UNIT (X57-674X-XX)

New

parts

New

parts

Ref. No. Address

Parts No.

Description

Destination

Ref. No. Address

Parts No.

Description

Destination

C33

C34

C35

C37

C38

C92-0002-05

C92-0714-05

C92-0001-05

CK73HB1H102K

CK73HB1C103K

CHIP-TAN

TANTALUM 4.7UF 6.3WV

CHIP-C

CHIP C

0.22UF 35WV

C136

C137

C138

C141,142

C145

CC73HCH1H100D

CC73HCH1H050C

CK73HB1H102K

CC73HCH1H220G

CHIP C

10PF

5.0PF

1000PF

22PF

0.1UF 35WV

1000PF

0.010UF K

C40

C41

C42

C43

CK73HB1A104K

C92-0507-05

CK73HB1H102K

CK73HB1C103K

CC73HCH1H101J

CHIP C

CHIP-TAN

CHIP C

0.10UF

4.7UF 6.3WV

1000PF

0.010UF K

C147

C148

C152,153

C158

C159

CK73HB1H102K

CC73HCH1H220G

CK73HB1H102K

CC73HCH1H220G

CC73HCH1H020B

CHIP C

1000PF

22PF

1000PF

22PF

C44-46

100PF

2.0PF

C50

C51

C52

C54

C55

CC73HCH1H220J

CC73GCH1H220J

CC73HCH1H100D

CK73HB1H102K

CK73HB1C103K

CHIP C

22PF

10PF

1000PF

C160

C161

C162

C163

C166

CC73HCH1H270G

CK73HB1H102K

CC73HCH1H470G

CK73HB1H102K

CK73HB1C103K

CHIP C

27PF

1000PF

47PF

1000PF

0.010UF K

∗

0.010UF K

C56

C57

C61

C64

C65

CK73HB1H102K

CC73HCH1H100D

CK73HB1H102K

CC73HCH1H180J

CHIP C

1000PF

10PF

1000PF

18PF

C167,168

C169,170

C171

C172

C173,174

CK73HB1A104K

CK73HB1A683K

CK73HB1H102K

CK73HB1H182K

CC73HCH1H181J

CHIP C

0.10UF

0.068UF K

1000PF

1800PF

180PF

∗

C66

C67

C68

C69

C70

CK73GB0J105K

CK73HB1H102K

CC73HCH1H180J

CC73HCH1H040C

CK73GB0J105K

CHIP C

1.0UF

1000PF

18PF

4.0PF

1.0UF

C175

C176

C177

C178

C179

CC73HCH1H220J

CK73HB1A104K

C92-0712-05

CK73HB1C103K

CK73HB1A104K

CHIP C

CHIP-TAN

CHIP C

22PF

0.10UF

22UF 6.3WV

0.010UF K

0.10UF

C71

C72

C73

C74

C75

CK73HB1H102K

CK73GB1C104K

CK73HB1H102K

CC73HCH1H330J

CK73HB1H102K

CHIP C

1000PF

0.10UF

1000PF

33PF

C180

C182,183

C186

C187

C188

CC73HCH1H121J

CK73HB1A104K

CC73HCH1H240J

CC73HCH1H020C

CC73HCH1H240J

CHIP C

120PF

0.10UF

24PF

2.0PF

24PF

1000PF

C76

C78

C82

C83

C84

CC73GCH1H390J

CK73HB1H102K

CK73HB1C103K

CK73HB1A104K

CHIP C

39PF

1000PF

0.010UF K

0.10UF

C189

C190-192

C193

C194

C195

CK73HB1H102K

CK73HB1C103K

C92-0507-05

CK73HB1A104K

C92-0628-05

CHIP C

CHIP-TAN

CHIP C

CHIP-TAN

1000PF

0.010UF K

4.7UF 6.3WV

0.10UF

10UF 10WV

C85

C88

C89

C90-92

C93

∗

C93-0766-05

CERAMIC C 56PF

C196,197

C198

C201

C202

C203

CK73HB1C682K

CK73EF1C105Z

CK73HB1H122K

CK73HB1H271K

CC73HCH1H121J

CHIP C

6800PF

1.0UF

1200PF

270PF

120PF

CC73GCH1H560J

CK73GB1H102K

CK73HB1H102K

CC73HCH1H080D

CHIP C

56PF

1000PF

8.0PF

C94

C95-97

C98

C99

C100

CK73GB1H102K

CC73GCH1H120G

CC73GCH1H080B

CC73GCH1H130G

CC73GCH1H070B

CHIP C

1000PF

12PF

8.0PF

13PF

C204

C205

C206

C207

C208

CK73HB1A333K

CK73HB1A473K

CK73HB1C153K

CK73HB1C103K

CC73HCH1H820J

CHIP C

0.033UF K

0.047UF K

0.015UF K

0.010UF K

7.0PF

82PF

C101

C105-107

C108

C109-115

C116

CC73GCH1H240G

CK73HB1H102K

CC73HCH1H101J

CK73HB1H102K

C92-0544-05

CHIP C

CHIP-TAN

24PF

C209

C210

C211

C212

C213

CK73HB1H102K

CK73HB1C103K

CK73HB1H222K

CK73HB1C123K

C92-0507-05

CHIP C

CHIP-TAN

1000PF

0.010UF K

2200PF

0.012UF K

4.7UF 6.3WV

1000PF

100PF

1000PF

10UF 4WV

C117,118

C124

C125

C126

C128

CK73HB1H102K

CK73HF1C104Z

CC73HCH1H1R5C

CC73HCH1H100D

CK73HB1C103K

CHIP C

CERAMIC C 0.1UF

CHIP C

1000PF

C218

C219

C220

C221,222

C223

CK73HB1H102K

CK73HB1A473K

CK73HB1E472K

CK73HB1C103K

CK73HB1H102K

CHIP C

1000PF

0.047UF K

4700PF

0.010UF K

1.5PF

10PF

0.010UF K

1000PF

C129

C130

C131-133

C134

C135

CC73HCH1H110J

CK73HB1H102K

CK73HB1C103K

CK73HB1H102K

CC73HCH1H120J

CHIP C

11PF

1000PF

0.010UF K

1000PF

12PF

C224

C225

C226

C227

CK73HB1A104K

CK73GB0J105K

CK73HB1A104K

C92-0587-05

CHIP C

CHIP-TAN

CHIP C

0.10UF

1.0UF

0.10UF

2.2UF 4WV

0.10UF

C228,229

CK73HB1A104K

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

PARTS LIST

TX-RX UNIT (X57-674X-XX)

New

parts

New

parts

Ref. No. Address

Parts No.

Description

Destination

Ref. No. Address

Parts No.

Description

Destination

C230

CK73FB1C105K

CK73HB1H102K

CK73HB1C103K

C92-0628-05

CHIP C

CHIP-TAN

CHIP C

1.0UF

1000PF

0.010UF K

10UF 10WV

C359,360

C366

C500,501

C502

CK73HB1A104K

CC73GCH1H101G

CC73HCH1H1R5B

CC73HCH1H030B

CC73GCH1H101G

CHIP C

0.10UF

100PF

1.5PF

3.0PF

100PF

C231,232

C235,236

C237

∗

C238-241

CK73HB1H102K

1000PF

C503

C242

C243

C246

C247,248

C249

CK73HB1C103K

CK73HB1H102K

C92-1327-05

CK73HB1A104K

CK73HB1H102K

CHIP C

CHIP-TAN

CHIP C

0.010UF K

1000PF

100UF 10WV

C504

C505

C506

C510

CC73HCH1H020B

CK73HB1A473K

CK73HB1H102K

CC73HCH1H101J

CK73HB1H471K

CHIP C

2.0PF

0.047UF K

1000PF

100PF

470PF

0.10UF

1000PF

E,E3

C511,512

C250

C252

C253

C255

CK73EF1C105Z

CC73HCH1H101J

C92-0628-05

CK73HB1H102K

CHIP C

CHIP-TAN

CHIP C

1.0UF

100PF

10UF 10WV

C514

C515-517

CK73GB1H471K

CK73HB1H471K

CHIP C

470PF

E,E3

CN1

CN2

CN6

CN7

CN8

E40-5915-05

E40-5929-05

E40-6327-05

E40-5630-05

E40-6308-05

FLAT CABLE CONNECTOR

PIN ASSY

PIN ASSY SOCKET

PIN ASSY

C256,257

1000PF

∗

C258

C270,271

C272

C276

C279-285

CK73HB1A104K

CK73HB1H102K

CK73HB1H471K

CK73HB1H102K

CHIP C

0.10UF

1000PF

470PF

1000PF

CN9

CN15

CN17

E40-6309-05

E23-1081-05

E03-0190-05

E11-0484-05

PIN ASSY SOCKET

TERMINAL

DC JACK

3.5D PHONE JACK(3.5D)

E,E3

C286

C290,291

C293

C294,295

C297

CK73FB1C105K

CK73HB1H102K

CC73HCH1H470J

CC73HCH1H050C

CK73HB1A104K

CHIP C

1.0UF

1000PF

47PF

5.0PF

0.10UF

∗

E11-0483-05

2.5D PHONE JACK(2.5D)

CN10

∗

F01-1032-05

F53-0286-05

F53-0287-05

RADIATION PLATE

FUSE(2.5A/32V)

FUSE(0.5A/32V)

C298

C299

C300

C302

C303

CK73HB1H102K

CK73FB1C105K

CK73HB1H102K

C92-0605-05

CHIP C

1000PF

1.0UF

1000PF

CD1

CF1

L79-1474-05

L72-0968-05

L40-1001-86

L41-4778-14

L41-8278-14

TUNING COIL

CERAMIC FILTER

SMALL FIXED INDUCTOR(10UH)

SMALL FIXED INDUCTOR

TANTALUM C 150UF 6.3WV

C304-306

C307

C308

C309

C310

CK73HB1H102K

CK73HB1A104K

CK73HB1H102K

CK73FB1C105K

CK73EF1C105Z

CHIP C

1000PF

0.10UF

1000PF

1.0UF

L5,6

L9-11

L12

L13

L40-1001-86

L40-1285-71

L40-8275-71

L40-1075-71

L92-0149-05

SMALL FIXED INDUCTOR(10UH)

SMALL FIXED INDUCTOR(120NH)

SMALL FIXED INDUCTOR(82NH)

SMALL FIXED INDUCTOR(10NH)

FERRITE CHIP

1.0UF

∗

C311

C312,313

C314

C316

C317,318

CK73GB1C104K

CK73HB1A393K

CK73HB1H102K

CK73GB1C104K

CK73HB1H102K

CHIP C

0.10UF

0.039UF K

1000PF

0.10UF

1000PF

L14

L15

L16

L17

L18

∗

L41-4778-14

L41-6868-14

L34-4577-05

L34-4606-05

L41-2285-14

SMALL FIXED INDUCTOR

AIR-CORE COIL

SMALL FIXED INDUCTOR

C319

C92-0628-05

CHIP-TAN

CHIP C

10UF 10WV

C320,321

C323-326

C327

CK73HB1C822K

CK73HB1H102K

CK73HB1A104K

CK73GB0J105K

8200PF

1000PF

0.10UF

1.0UF

K,K2

L19

L20

L21-23

L26

L27

L34-4569-05

L34-4567-05

L34-4569-05

L41-4785-14

L41-6885-14

AIR-CORE COIL

SMALL FIXED INDUCTOR

C328

C329

C330,331

C332

C335,336

C338

CC73FCH1H560J

CK73HB1H102K

CK73HB1A104K

CK73FB1C105K

CHIP C

56PF

∗

1000PF

0.10UF

1.0UF

L28

L29

L32

L35

L38

L40-2775-71

L40-2275-71

L41-8278-14

SMALL FIXED INDUCTOR(27NH)

SMALL FIXED INDUCTOR(22NH)

SMALL FIXED INDUCTOR

C339

C344-348

C349

C349,350

CK73HB1A473K

CK73HB1H102K

CK73HB1A104K

CHIP C

0.047UF K

1000PF

0.10UF

M,M2,E

K,K2

L40

L41

L45,46

L49

L50

L41-6878-14

L41-1878-14

L41-5685-14

L92-0131-05

L92-0137-05

SMALL FIXED INDUCTOR

FERRITE CHIP

∗

C351

CK73HB1C103K

CK73HB1H102K

CK73HB1C103K

CK73EF1C105Z

CK73HB1A473K

CHIP C

0.010UF K

1000PF

0.010UF K

1.0UF

0.047UF K

C352-354

C355,356

C357

FERRITE CHIP

L53

L54

L40-1575-71

L40-5675-71

SMALL FIXED INDUCTOR(15NH)

SMALL FIXED INDUCTOR(56NH)

C358

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

PARTS LIST

TX-RX UNIT (X57-674X-XX)

New

parts

Ref. No. Address

Parts No.

Description

Destination

Ref. No. Address

Parts No.

Description

0.39 K 1/4W

RESISTOR 100K D 1/16W

RESISTOR 150K D 1/16W

Destination

parts

L55

L56

L58

L63

L64

L41-1078-14

L41-2278-14

L41-8285-14

L92-0140-05

L40-4795-85

SMALL FIXED INDUCTOR

FERRITE CHIP

R70-72

R74,75

R76-79

R80

RK73EB2ER39K

RK73HH1J104D

RK73HH1J154D

RK73HB1J103J

RK73HB1J394J

CHIP R

∗

CHIP R

10K

390K

1/16W

SMALL FIXED INDUCTOR(4.7UH)

R81

L66

L68

XF1

∗

L40-1285-71

L92-0161-05

L77-1931-05

L77-1940-05

L71-0619-05

SMALL FIXED INDUCTOR(120NH)

BEADS CORE

TCXO(12.8MHZ)

CRYSTAL RESONATOR(7.982MHZ)

MCF(38.85MHZ)

R82

R83

R84

R85

R86

RK73HB1J273J

RK73HB1J563J

RK73HB1J104J

RK73GB1J561J

RK73HB1J562J

CHIP R

27K

56K

100K

560

1/16W

∗

5.6K

CP1

CP2

CP31

CP32-35

∗

RK75HA1J272J

RK75GB1J392J

RK75HA1J102J

RK73HB1J102J

CHIP-COM 2.7K

CHIP-COM 3.9K

CHIP-COM 1.0K

1/16W

R88

R90

R91

R92

R93

RK73HB1J331J

RK73HB1J102J

RK73HB1J332J

RK73HB1J470J

CHIP R

330

1.0K

3.3K

1/16W

CHIP R

1.0K

RK73HB1J104J

RK73HB1J102J

RK73HB1J473J

RK73HB1J104J

RK73HB1J271J

CHIP R

100K

1.0K

47K

100K

270

1/16W

R94

R95

R96-98

R99,100

R101

RK73HB1J331J

RK73HB1J104J

RK73HB1J823J

RK73HB1J105J

RK73HB1J470J

CHIP R

330

1/16W

100K

82K

1.0M

R10

R11

R12

R13

R14

RK73HB1J470J

RK73HB1J154J

RK73HB1J470J

RK73HB1J682J

RK73HB1J332J

CHIP R

150K

6.8K

3.3K

1/16W

R102

R103

R104

R110,111

R115

R92-1368-05

CHIP R

0 OHM

2.7K

1.0M

5.6K

RK73HB1J272J

RK73HB1J560J

RK73HB1J105J

RK73HB1J562J

1/16W

R15

R16

R17

R18

R19

RK73HB1J562J

RK73HB1J471J

RK73HB1J332J

RK73HB1J100J

RK73HB1J124J

CHIP R

5.6K

470

3.3K

1/16W

R116

R117

R118

R119

R120

RK73HB1J124J

RK73HH1J272D

RK73HB1J273J

RK73HB1J182J

RK73HB1J272J

CHIP R

RESISTOR 2.7K

CHIP R

120K

1/16W

D 1/16W

27K

1.8K

2.7K

1/16W

120K

R20

R21

R22

R24

R30

RK73HB1J102J

RK73HB1J472J

RK73HB1J822J

RK73HB1J471J

RK73HB1J122J

CHIP R

1.0K

4.7K

8.2K

470

1/16W

R122

R123

R124

R125

R126

RK73HB1J272J

RK73HB1J182J

RK73HB1J332J

RK73HB1J561J

RK73HB1J273J

CHIP R

2.7K

1.8K

3.3K

560

1/16W

1.2K

27K

R31

R32

R33

R34

R35

RK73HB1J222J

RK73HB1J102J

RK73HB1J220J

RK73HB1J332J

RK73HB1J124J

CHIP R

2.2K

1.0K

3.3K

120K

1/16W

R127

R128

R130

R131

R132

RK73HB1J470J

RK73HB1J332J

RK73HB1J101J

RK73HB1J334J

RK73HB1J222J

CHIP R

3.3K

100

330K

2.2K

1/16W

R36

R37,38

R39

R41

R42

RK73HB1J100J

RK73HB1J563J

RK73HB1J271J

RK73HB1J101J

CHIP R

1/16W

R133

R134

R135

R137

R140

RK73HB1J102J

RK73HB1J394J

RK73HB1J474J

RK73HB1J472J

RK73HB1J184J

CHIP R

1.0K

390K

470K

4.7K

180K

1/16W

56K

270

100

R45

R46

R47

R49

R50

RK73HB1J332J

RK73HB1J103J

RK73HB1J562J

RK73HB1J331J

RK73HB1J330J

CHIP R

3.3K

10K

5.6K

330

1/16W

R141

R142

R143

R144

R145

RK73HB1J183J

RK73HB1J472J

RK73HB1J471J

R92-1368-05

CHIP R

18K

4.7K

470

0 OHM

4.7K

1/16W

RK73HB1J472J

1/16W

R51

R52

R53,54

R55

R56

RK73HB1J471J

RK73HB1J102J

RK73HB1J101J

RK73HB1J471J

RK73HB1J102J

CHIP R

470

1.0K

100

470

1.0K

1/16W

R146

R147

R148

R149

R151

RK73HB1J183J

RK73HB1J471J

RK73HB1J154J

RK73HB1J473J

RK73HB1J681J

CHIP R

18K

470

150K

47K

680

1/16W

R58

R59

R60

R61,62

R64

RK73HB1J100J

RK73HB1J123J

RK73HB1J563J

RK73HB1J221J

R92-1368-05

CHIP R

1/16W

R152

R153

R155,156

R157,158

R159

RK73HB1J154J

RK73HB1J102J

RK73HB1J104J

RK73HB1J334J

RK73HB1J124J

CHIP R

150K

1.0K

100K

330K

120K

1/16W

12K

56K

220

0 OHM

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

PARTS LIST

TX-RX UNIT (X57-674X-XX)

New

parts

New

parts

Ref. No. Address

Parts No.

Description

Destination

Ref. No. Address

Parts No.

Description

Destination

R160

R161

R162

R163

R164

RK73HB1J472J

RK73HB1J102J

RK73HB1J184J

RK73HB1J564J

RK73HH1J103D

CHIP R

4.7K

1.0K

180K

560K

10K

1/16W

R231

R235,236

R237

R238,239

R240

RK73HB1J151J

RK73HB1J102J

RK73HB1J104J

RK73HB1J102J

RK73HB1J104J

CHIP R

150

1/16W

1.0K

100K

1.0K

100K

D 1/16W

R165,166

R167,168

R169

R170

R171

RK73HB1J824J

RK73HB1J184J

RK73GH1J104D

RK73HH1J473D

RK73HH1J563D

CHIP R

RESISTOR 47K

RESISTOR 56K

820K

180K

100K D 1/16W

1/16W

R241-243

R244

R246

R248

R252

RK73HB1J334J

R92-1252-05

RK73HB1J392J

RK73HB1J104J

CHIP R

330K

0 OHM

3.9K

100K

1/16W

D 1/16W

∗

R172

R173

R174

R175

R176

RK73HB1J103J

RK73HB1J153J

RK73HB1J564J

RK73HB1J222J

RK73HB1J824J

CHIP R

10K

15K

560K

2.2K

820K

1/16W

R253,254

R255

R256

R257

R258

RK73HB1J102J

R92-1368-05

RK73HB1J102J

RK73HB1J563J

RK73HB1J681J

CHIP R

1.0K

0 OHM

1.0K

56K

1/16W

K,K2

680

R177

R178

R179

R180

R181

RK73HB1J103J

R92-1368-05

RK73HB1J224J

RK73HB1J393J

RK73HB1J471J

CHIP R

10K

1/16W

R258,259

R259

R260

R92-1368-05

RK73HB1J684J

RK73HB1J473J

CHIP R

0 OHM

680K

47K

M,M2,E

K,K2

M,M2,E

0 OHM

220K

39K

1/16W

470

47K

R182

R183

R185

R186

R188

RK73HB1J102J

RK73HB1J333J

RK73HB1J274J

RK73GB1J683J

RK73HB1J470J

CHIP R

1.0K

33K

270K

68K

1/16W

R260,261

R263

R264

R271

RK73HB1J473J

RK73HB1J103J

R92-1368-05

RK73HB1J120J

CHIP R

47K

10K

0 OHM

1/16W

K,K2

M,M2,E

1/16W

R189

R190,191

R192

R193

R194

R92-1368-05

CHIP R

0 OHM

47K

470

1.8K

10K

R272

R273

R275-277

R282,283

R285,286

RK73HB1J472J

RK73HB1J102J

RK73HB1J473J

R92-1368-05

CHIP R

4.7K

1.0K

47K

0 OHM

1/16W

RK73HB1J473J

RK73HB1J471J

RK73HB1J182J

RK73HB1J103J

1/16W

R92-1368-05

R195

R196

R197

R198

R199

RK73HB1J101J

RK73HB1J103J

RK73HB1J101J

RK73HB1J103J

RK73HB1J102J

CHIP R

100

10K

100

10K

1.0K

1/16W

R290,291

R310

R312

R313

R318

R92-1368-05

CHIP R

0 OHM

3.9K

4.7K

3.3K

1.0K

RK73HB1J392J

RK73HB1J472J

RK73HB1J332J

RK73HB1J102J

1/16W

R200

R201

R202

R203

R204

RK73HB1J103J

RK73HB1J472J

RK73HB1J473J

RK73HB1J474J

RK73HB1J184J

CHIP R

10K

4.7K

47K

470K

180K

1/16W

R323

R324,325

R326

R328

R330

RK73HB1J472J

RK73HB1J473J

R92-1368-05

RK73HB1J474J

RK73HB1J471J

CHIP R

4.7K

47K

0 OHM

470K

470

1/16W

R205

R206

R207

R208

R209

RK73HB1J101J

RK73HB1J150J

RK73HB1J102J

RK73HB1J100J

RK73HB1J104J

CHIP R

100

1.0K

1/16W

R332

R335

R336

R337

R341

RK73FB2A150J

RK73HB1J102J

RK73HB1J221J

RK73HB1J471J

R92-1368-05

CHIP R

1.0K

220

470

0 OHM

1/10W

1/16W

100K

R210

R211

R212

R213

R214

RK73FB2A120J

RK73HB1J474J

RK73HB1J103J

RK73HB1J223J

RK73HB1J103J

CHIP R

1/10W

1/16W

R342,343

R344

R345

R346

R347

R92-1252-05

RK73HB1J104J

R92-1252-05

RK73HB1J680J

RK73HB1J101J

CHIP R

0 OHM

100K

0 OHM

1/16W

470K

10K

22K

10K

K,K2

100

R215

R216

R217

R218

R223

RK73HB1J474J

RK73HB1J103J

RK73HB1J821J

R92-1368-05

CHIP R

470K

10K

820

0 OHM

220K

1/16W

R348

R349

R351

R353

R354

RK73HB1J221J

R92-1368-05

RK73HB1J221J

RK73HB1J333J

R92-1368-05

CHIP R

220

0 OHM

220

33K

0 OHM

1/16W

RK73HB1J224J

1/16W

R224

R226

R227

R230

RK73HB1J183J

RK73HB1J221J

RK73HB1J101J

RK73HB1J221J

CHIP R

18K

220

100

220

1/16W

VR1

VR5

VR6

∗

R32-0686-05

R32-0668-05

R32-0658-05

SEMI FIXED VARIABLE RESISTOR(500K)

SEMI FIXED VARIABLE RESISTOR(50K)

SEMI FIXED VARIABLE RESISTOR(100K)

K,K2,M

M2,E3

S70-0485-05

TACT SWITCH (PTT)

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

PARTS LIST

TX-RX UNIT (X57-674X-XX)

New

Ref. No. Address

Parts No.

Description

MIC ELEMENT

Destination

Ref. No. Address

Parts No.

2SK1215(E)

2SK1830

2SC4617(R)

RN2105

Description

Destination

parts

MIC1

T91-0580-05

Q17

Q20

Q21

Q22

Q23

FET

D1,2

D8,9

1SV325

HSC277

1SV305

MA2S111

HSC277

VARIABLE CAPACITANCE DIODE

DIODE

VARIABLE CAPACITANCE DIODE

DIODE

TRANSISTOR

∗

KTC4082

Q24

Q27

Q29

Q30

Q31

2SC5488

2SK1830

2SC4919

2SC4617(R)

2SK1830

TRANSISTOR

FET

TRANSISTOR

FET

D10

D12,13

D14

D15

D16

XB15A709

HVC131

MA2S111

MA8039

MA2S111

DIODE

ZENER DIODE

DIODE

Q33

Q34,35

Q36

Q37

Q38

2SB1184(Q,R)

2SK1830

2SJ347

2SB1184(Q,R)

2SC4617(R)

TRANSISTOR

FET

D17

D18-21

D22

D24

D25

HSM88AS

1SV305

1SS361

MA742

MA2S111

DIODE

FET

VARIABLE CAPACITANCE DIODE

TRANSISTOR

DIODE

Q41

Q47

Q50

Q51

Q52

∗

RN2105

RN1701

2SK1830

RN4902

RN1107

TRANSISTOR

FET

TRANSISTOR

D26

D27

D30

D31

1SS388

DIODE

RB706F-40

RB521S-30

DA221

∗

D32,33

RB051L-40

Q53

Q55

Q56

Q57

Q58

RN2701

CPH3317

CPH3417

RN2105

2SK1830

TRANSISTOR

FET

∗

D34

D35,36

D60

D62

D62-65

∗

MAZS0270H

RB521S-30

MA2S111

ZENER DIODE

DIODE

FET

TRANSISTOR

FET

E,E3

K,K2

M,M2,E

Q58

2SK1830

FET

Q58,59

TH1

TH3,4

2SK1830

B57331V2103J

B57331V2104J

FET

THERMISTOR

K,K2

D63-65

D64,65

D69-73

D74

MA2S111

DA221

DIODE

M,M2

E,E3

∗

D79

DA221

D80

IC1

IC2

IC3

IC4

RB521S-30

DIODE

LMX2316TMX

NJM2904V

TA31136FN

XC6202PB52FR

MOS IC

∗

IC5

IC6

IC8

IC9

IC10

NJM2107F

TA7368F

90522BPFFG139

TK11250CM

MOS IC

MPU

∗

MOS IC

S-80844CNNBB85 MOS IC

IC11

IC12

IC15

IC16

IC17

∗

S-80930CNNBG80 MOS IC

TK11250CUCB

AT25160N10SI27

NJM2904V

MOS IC

ROM IC

MOS IC

NJM2902V

2SC5066(O)

2SC5488

2SK1830

TRANSISTOR

FET

∗

Q5,6

2SC4617(R)

2SC5488

TRANSISTOR

∗

2SC5488

2SC4926YD

2SK2596

2SK3476

2SK1830

TRANSISTOR

FET

Q10

Q11

Q12

Q13

Q14

Q15

Q16

∗

RN4902

2SC4617(R)

3SK318

TRANSISTOR

FET

E : TH-K2E

E3 : TH-K2ET

K : TH-K2AT

K2 : TH-K2AT

M : TH-K2AT

M2 : TH-K2AT

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TH-K2AT/K2E/K2ET

EXPLODED VIEW (TH-K2AT / K2ET)

TX-RX Unit (B/3)

Dx2

Gx2

Ex2

TX-RX Unit (C/3)

Dx2

TX-RX Unit (A/3)

Ax2

Fx2

701. STICKER

702. STANDARD LABEL : K, K2

A : N09-1492-05

B : N14-0569-04

C : N14-0573-04

D : N79-2035-46

E : N79-2040-45

F : N82-2007-46

G : N09-2433-05

1 (K2, M2)

Parts with the exploded numbers larger than 700 are not supplied.

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TH-K2AT/K2E/K2ET

EXPLODED VIEW (TH-K2E)

TX-RX Unit (B/3)

Dx2

Gx2

Ex2

TX-RX Unit (C/3)

Dx2

TX-RX Unit (A/3)

Ax2

Fx2

701. STICKER

A : N09-1492-05

B : N14-0569-04

C : N14-0573-04

D : N79-2035-46

E : N79-2040-45

F : N82-2007-46

G : N09-2433-05

24 Parts with the exploded numbers larger than 700 are not supplied.

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TH-K2AT/K2E/K2ET

PACKING (K, M, E and E3 types)

703. PAMPHLET (R & TTE) : E, E3

704. PAMPHLET

705. WARRANTY CARD : K, E, E3

11.INSTRUCTION MANUAL

(B62-1696-00)

(B62-1697-00):K,E,E3

(B62-1699-00):E,E3

(B62-1702-00):E,E3

(B62-1757-00):E,E3

(B62-1758-00):E,E3

41.HELICAL ANTENNA

(T90-1018-25)

42.CHARGER (230V/13.8V)

(W08-0959-15) : M, E, E3

43.CHARGER (120V/13.8V)

(W08-0960-15) : K

44.BATTERY ASSY

(7.2V/1100m Ah)

(W09-0991-05)

26.PACKING FIXTURE

(H12-3146-01)

30. BELT HOOK ASSY

(J 29-0709-04)

32.HANDSTRAP

(J 69-0342-05)

: M, E, E3

24.ITEM CARTON CASE

(H52-1960-02):K,M

(H52-1961-02):E

(H52-1962-02):E3

706. UK PLUG ATTACHMENT

: E, E3

Parts with the exploded numbers larger than 700 are not supplied.

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TH-K2AT/K2E/K2ET

PACKING (K2 and M2 types)

11.INSTRUCTION MANUAL

(B62-1695-00):M2

(B62-1696-00)

(B62-1697-00):K2

704. PAMPHLET

705. WARRANTY CARD : K2

1.CABINET ASSY

(BATTERY CASE)

(A02-3817-02)

32.HANDSTRAP

(J 69-0342-05) : M2

25.ITEM CARTON CASE

(H52-2009-02)

41.HELICAL ANTENNA

(T90-1018-25)

30.BELT HOOK ASSY

(J 29-0709-04)

27.PACKING FIXTURE

(H12-3147-03)

26 Parts with the exploded numbers larger than 700 are not supplied.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

G. 7.5V TX M power (Lower limit frequency, center frequency,

upper limit frequency)

Single Tone Mode

This mode is used to check the DTMF deviation.

H. 7.5V TX L power (Lower limit frequency, center frequency,

upper limit frequency)

I. 13.8V TX H power (Lower limit frequency, center frequency,

upper limit frequency)

Operation

■ 16key (K, K2, M, M2 and E3 types)

1. Press the [PTT] key on the transceiver to switch to the

J. 13.8V TX M power (Lower limit frequency, center frequency,

upper limit frequency)

transmission mode.

2. Press the [MONI] key to enter the single tone mode.

K. 13.8V TX L power (Lower limit frequency, center frequency,

upper limit frequency)

L. DCS modulation balance

3. Press any key from [1] to [8] keys to transmit a single tone.

The single tone is consisting of eight frequencies.

[1] 697Hz

M.Tone deviation (Lower limit frequency, center frequency,

upper limit frequency)

[2] 770Hz

[3] 852Hz

N. DCS deviation (Lower limit frequency, center frequency,

upper limit frequency)

O. VOX sensitivity (Level 1, level 9)

[4] 941Hz

[5] 1209Hz

[6] 1336Hz

[7] 1477Hz

[8] 1633Hz

■ Operation in Adjustm ent Mode

1. Turn the transceiver ON.

2. Set the tone frequency to 151.4 Hz and the DCS code to

023 in Menu Mode to adjust tone and DCS modulation.

3. Set Adjustment Mode by shorting two lands (SET) on the

component side of the TX-RX unit (A/3).

4. Whe n the [MONI] ke y is pre s s e d again during the

transmission, the transceiver switches to the reception

mode, the single tone mode turns OFF.

■ 4key (E type)

1. Press the [PTT] key on the transceiver to switch to the

transmission mode.

Short these two lands

2. Press the [MONI] key to enter the single tone mode.

3. When the [VFO] key is pressed during the transmission, a

DTMF “D” dual tone (combination of 1633 Hz and 941 Hz

frequencies) is transmitted.

SET

4. When the [MR] key is pressed during the transmission,

single-tone 1633 Hz is transmitted.

5. Whe n the [MONI] ke y is pre s s e d again during the

transmission, the transceiver switch to the reception mode,

the single tone mode is turned OFF.

4. When the Adjustment Mode is set, the “Overvoltage

warning reference voltage (14.8V [DC IN])” adjustment item

is displayed. (The “ ” icon on the upper side of the LCD

blinks while the transceiver is in the Adjustment Mode.)

The current adjustment value is displayed at the lower digits

of the fre que ncy display, and the value store d in the

EEPROM is displayed on the memory channel number

display.

• The single tone mode can be enabled only during the

transmission.

• When DTMF memory is transmitted in the single tone

mode, the single tone mode turns OFF.

Adjustm ent Mode

This mode is used to replace or readjust the IC15 (EEPROM).

Adjust the following adjustment items after setting the

transceiver to “Adjustment Mode”.

Blink

■ Adjustm ent Item s

The value stored in the

EEPROM. (00-FE)

A. Overvoltage warning reference voltage (14.8V [DC IN])

B. Battery terminal reference voltage (7.5 V [Battery terminal])

C. Squelch (SQL1, SQL2)

D. S-meter (Two segments in S-meter light, all segments in S-

meter light)

Adjustment item Current adjustment

value (00-FE)

5. The functions of transceiver keys in Adjustment Mode are

as follows:

E. RX BPF (Lower limit frequency, center frequency, upper

limit frequency)

F. 7.5V TX H power (Lower limit frequency, center frequency,

upper limit frequency)

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Key nam e

PTT

[key]

[F] key → [key]

Transmit while this key is held down.

Changes adjustment items. (Forward)

Selecting a TX power (High/Mid/Low)

LAMP

MONI

Lamp always ON

When this key is pressed on the frequency display, it switches to the adjustment display.

Changes adjustment items. (Back)

Squelch level setting mode

When this key is pressed on the frequency display, it switches to the adjustment display.

Write adjustment values (adjustment display)

Sound error tone (frequency display)

Function mode/MHz mode ON

Function mode/MHz mode OFF

VFO mode

VFO

M→V (Memory shift)

When this key is pressed on the adjustment display, it switches to the frequency display.

Memory mode

M.IN (Memory registration)

When this key is pressed on the adjustment display, it switches to the frequency display.

Switch between frequency display and adjustment display.

Each time this key is pressed, the LCD switches between the frequency display and

adjustment display.

CALL

Encoder

Increase or decrease adjustment values (00 - FE). (adjustment display)

Increase or decrease frequency and memory channel number. (frequency display)

Increase or decrease frequency (1MHz

step). (frequency display)

6. To exit the Adjustment Mode, turn the transceiver OFF.

Note:

• When you press [LAMP] or [MONI] key, ensure the bosses

of rubber keys align with the LAMP and MONI contacts of

the PTT PCB (C/3).

(2) Press the [PTT] key to enable the transmit mode.

(3) Adjust the output voltage from DC power supply until the

voltage at the battery terminal becomes 7.5V while the

transceiver is transmitting.

(4) Press the [MENU] key to write the current voltage value

into the EEPROM.

• In the Adjustment Mode, Transmission and Reception

frequencies becomes extensive.

C. Squelch (SQL1, SQL2)

A. Overvoltage w arning reference voltage (14.8V [DC IN])

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“DC” on the LCD.

1Squelch (SQL1)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“SQ1” on the LCD.

The current voltage value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

The detected DC voltage value to the current noise level is

displayed at the lower digits of the frequency display, and

the value stored in the EEPROM is displayed on the memory

channel number display.

(2) Press the [MENU] key to write the current voltage value

into the EEPROM.

(2) Press the [MENU] key to write the current noise level value

into the EEPROM.

B. Battery term inal reference voltage (7.5 V [Battery

term inal])

2Squelch (SQL2)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“SQ2” on the LCD.

“BAT” on the LCD.

Press the [F] key and then the [PTT] key repeatedly to turn

the “ ” icon ON. The current voltage value is displayed at

the lower digits of the frequency display, and the value

stored in the EEPROM is displayed on the memory channel

number display.

(2) Press the [MENU] key to write the current noise level value

into the EEPROM.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

D. S-m eter (Tw o segm ents in S-m eter light, all segm ents

in S-m eter light)

1S-meter (Two segments in S-meter light)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“S1” on the LCD.

2RX BPF (Center frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“BPC” on the LCD.

The current RSSI level value is displayed at the lower digits

of the fre que ncy display, and the value store d in the

EEPROM is displayed on the memory channel number

display.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the center frequency on the

LCD.

(4)Re pe at s te ps (4) to (6) of “ 1RX BPF (Low e r lim it

frequency)” described on page 29.

(2)Press the [MENU] key to write the current RSSI level value

into the EEPROM.

3RX BPF (Upper limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“BPH” on the LCD.

2S-meter (All segments in S-meter light)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“S9” on the LCD.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(2)Press the [MENU] key to write the current RSSI level value

into the EEPROM.

(3)Turn the encoder to display the upper frequency on the

LCD.

(4)Re pe at s te ps (4) to (6) of “ 1RX BPF (Low e r lim it

frequency)” described on page 29.

E. RX BPF (Low er lim it frequency, center frequency, upper

lim it frequency)

1RX BPF (Lower limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“BPL” on the LCD.

F. 7.5V TX H p o w e r (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

17.5V TX H power (Lower limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“P7L” on the LCD.

The current BPF tuning value is displayed at the lower digits

of the fre que ncy display, and the value store d in the

EEPROM is displayed on the memory channel number

display.

In this case, the “ ” icon appears.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(4)Press the [CALL] key to switch to the adjustment display.

(5)Turn the encoder to change the current BPF tuning value

and adjust RX BPF.

(6)Press the [MENU] key to write the current BPF tuning value

into the EEPROM.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

(4)Press the [CALL] key to switch to the adjustment display.

(5)Press the [PTT] key to enable the transmit mode.

(6)Adjust the output voltage from DC power supply until the

voltage at the battery terminal becomes 7.5V while the

transceiver is transmitting.

(7)Turn the encoder to change the current APC value and adjust

the transmission power.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

(8) Press the [MENU] key to write the current APC value into

the EEPROM.

(5) Press the [PTT] key to enable the transmit mode.

(6) Adjust the output voltage from DC power supply until the

voltage at the battery terminal becomes 7.5V while the

transceiver is transmitting.

(7) Turn the encoder to change the current APC value and adjust

the transmission power.

27.5V TX H power (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7C” on the LCD.

In this case, the “ ” icon appears.

(8) Press the [MENU] key to write the current APC value into

the EEPROM.

27.5V TX M power (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7C” on the LCD.

In this case, the “ ” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the center frequency on the

LCD.

(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limit

frequency)” described on page 29.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the center frequency on the

LCD.

37.5V TX H power (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7H” on the LCD.

In this case, the “ ” icon appears.

(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limit

frequency)” described on page 30.

37.5VTX M power (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7H” on the LCD.

In this case, the “ ” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the upper limit frequency on

the LCD.

(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limit

frequency)” described on page 29.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display upper limit frequency on the

LCD.

(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limit

frequency)” described on page 30.

G. 7.5V TX M p o w e r (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

17.5V TX M power (Lower limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7L” on the LCD.

In this case, the “ ” icon appears.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

H. 7.5V TX L p o w e r (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

17.5V TX L power (Lower limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7L” on the LCD.

In this case, the “ ” icon appears.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the lower limit frequency on

the LCD.

(4) Press the [CALL] key to switch to the adjustment display.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

(4)Press the [CALL] key to switch to the adjustment display.

(5)Press the [PTT] key to enable the transmit mode.

(6)Adjust the output voltage from DC power supply until the

voltage at the battery terminal becomes 7.5V while the

transceiver is transmitting.

(7)Turn the encoder to change the current APC value and adjust

the transmission power.

(8) Press the [MENU] key to write the current APC value into

the EEPROM.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

(4)Press the [CALL] key to switch to the adjustment display.

(5)Press the [PTT] key to enable the transmit mode.

(6)Turn the encoder to change the current APC value and adjust

the transmission power.

(7)Press the [MENU] key to write the current APC value into

the EEPROM.

27.5V TX L power (Center frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“P7C” on the LCD.

In this case, the “ ” icon appears.

213.8V TX H power (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13C” on the LCD.

In this case, the “ ” icon appears.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the center frequency on the

LCD.

(4)Repeat steps (4) to (8) of ”17.5V TX L power (Lower limit

frequency)” described on page 30.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display center frequency on the LCD.

(4)Repeat steps (4) to (7) of ”113.8V TX H power (Lower

limit frequency)” described on page 31.

37.5V TX L power (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P7H” on the LCD.

In this case, the “ ” icon appears.

313.8V TX H power (Upper limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“P13H” on the LCD.

In this case, the “ ” icon appears.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the upper limit frequency on

the LCD.

(4)Repeat steps (4) to (8) of ”17.5V TX L power (Lower limit

frequency)” described on page 30.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display upper limit frequency on the

LCD.

(4)Repeat steps (4) to (7) of ”113.8V TX H power (Lower

limit frequency)” described on page 31.

I. 13.8V TX H p o w e r (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

113.8V TX H power (Lower limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“P13L” on the LCD.

In this case, the “ ” icon appears.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

J . 13.8V TX M pow e r (Low e r lim it fre que ncy, ce nte r

frequency, upper lim it frequency)

(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower

limit frequency)” described on page 32.

113.8V TX M power (Lower limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13L” on the LCD.

K. 13.8V TX L p o w e r (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

In this case, the “ ” icon appears.

113.8V TX L power (Lower limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13L” on the LCD.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

In this case, the “ ” icon appears.

The current APC value is displayed at the lower digits of

the frequency display, and the value stored in the EEPROM

is displayed on the memory channel number display.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the lower limit frequency on

the LCD.

(4) Press the [CALL] key to switch to the adjustment display.

(5) Press the [PTT] key to enable the transmit mode.

(6) Turn the encoder to change the current APC value and adjust

the transmission power.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the lower limit frequency on

the LCD.

(4) Press the [CALL] key to switch to the adjustment display.

(5) Press the [PTT] key to enable transmit mode.

(6) Turn the encoder to change the current APC value and adjust

transmission power.

(7) Press the [MENU] key to write the current APC value into

the EEPROM.

213.8V TX M power (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13C” on the LCD.

(7) Press the [MENU] key to write the current APC value into

the EEPROM.

In this case, the “ ” icon appears.

213.8V TX L power (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13C” on the LCD.

In this case, the “ ” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the center frequency on the

LCD.

(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower

limit frequency)” described on page 31.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the center frequency on the

LCD.

313.8V TX M power (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13H” on the LCD.

(4) Repeat steps (4) to (7) of ”113.8V TX L power (Lower limit

frequency)” described on page 32.

In this case, the “ ” icon appears.

313.8V TX L power (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“P13H” on the LCD.

In this case, the “ ” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the upper limit frequency on

the LCD.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the upper limit frequency on

the LCD.

(4)Repeat steps (4) to (7) of ”113.8V TX L power (Lower limit

frequency)” described on page 32.

2Tone deviation (Center frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“DVC” on the LCD.

In this case, the “ ” icon appears. Press the [F] key and

then the [PTT] key repeatedly to turn the “ ” icon ON.

L. DCS m odulation balance

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“DCS.BAL” on the LCD. Press the [F] key and then the

[PTT] key repeatedly to turns the “ ” icon ON.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the center frequency on the

LCD.

(4)Repeat steps (4) to (7) of ”1Tone deviation (Lower limit

frequency)” described on page 33.

(2)When the [PTT] key is pressed to enable transmit mode, a

100Hz s quare w ave form is inte rnally ge ne rate d and

modulated.

(3)While observing the waveforms on the oscilloscope, turn

the semi-fixed volume (VR6) to adjust the DCS modulation

waveform to a square waveform.

3Tone deviation (Upper limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“DVH” on the LCD.

In this case, the “ ” icon appears. Press the [F] key and

then the [PTT] key repeatedly to turn the “ ” icon ON.

(4)When the DCS modulation waveform becomes a square

waveform, release the [PTT] key.

M.To n e d e via t io n (Lo w e r lim it fre q u e n cy, ce n t e r

frequency, upper lim it frequency)

1Tone deviation (Lower limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“DVL” on the LCD.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the upper limit frequency on

the LCD.

(4) Repeat steps (4) to (7) of ”1Tone deviation (Lower limit

frequency)” described on page 33.

In this case, the “ ” icon appears. Press the [F] key and

then the [PTT] key repeatedly to turn the “ ” icon ON.

The current adjustment value is displayed at the lower digits

of the fre que ncy display, and the value store d in the

EEPROM is displayed on the memory channel number

display.

N. DCS deviation (Low er lim it frequency, center frequency,

upper lim it frequency)

1DCS deviation (Lower limit frequency)

(1)Press the [LAMP] or [MONI] key on the transceiver to display

“DVL” on the LCD.

In this case, the “

” icon appears. Press the [F] key and

then the [PTT] key repeatedly to turn the “ ” icon ON.

The current adjustment value is displayed at the lower digits

of the fre que ncy display, and the value store d in the

EEPROM is displayed on the memory channel number

display.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

(4)Press the [CALL] key to switch to the adjustment display.

(5)When the [PTT] key is pressed to enable transmit mode, a

preset tone frequency (151.4Hz) is internally generated and

modulated.

(6)Turn the encoder to change the current adjustment value

and adjust tone deviation.

(7)Press the [MENU] key to write the current adjustment value

into the EEPROM.

(2)Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3)Turn the encoder to display the lower limit frequency on

the LCD.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

(4) Press the [CALL] key to switch to the adjustment display.

(5) When the [PTT] key is pressed to enable transmit mode, a

pre s e t DCS code (023) is inte rnally ge ne rate d and

modulated.

(2) Input a specified AG signal to microphone input.

(3) Press the [MENU] key to write the current microphone input

level value into the EEPROM.

(6)Turn the encoder to change the current adjustment value

and adjust DCS deviation.

(7) Press the [MENU] key to write the current adjustment value

into the EEPROM.

2VOX sensitivity (Level 9)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“VOX9” on the LCD.

(2) Input a specified AG signal to microphone input.

(3) Press the [MENU] key to write the current microphone input

level value into the EEPROM.

2DCS deviation (Center frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“DVC” on the LCD.

In this case, the “

” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the center frequency on the

LCD.

(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limit

frequency)” described on page 33.

3DCS deviation (Upper limit frequency)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“DVH” on the LCD.

In this case, the “

” icon appears.

(2) Press the [VFO], [MR] or [CALL] key to switch to the

frequency display.

(3) Turn the encoder to display the upper limit frequency on

the LCD.

(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limit

frequency)” described on page 33.

O. VOX sensitivity (Level 1, level 9)

1VOX sensitivity (Level 1)

(1) Press the [LAMP] or [MONI] key on the transceiver to display

“VOX1” on the LCD.

Press the [F] key and then the [PTT] key repeatedly to turn

the “ ” icon ON.

The current microphone input level value is displayed at

the lower digits of the frequency display, and the value

stored in the EEPROM is displayed on the memory channel

number display.

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Com m on Section

Measurem ent

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

Condition

Test equipm ent

Unit

Term inal

Unit

1.Setting and Connect the optional PG-2W

LCD total illumination display

Initial configuration displayed after

the full-reset.

resetting

DC cable to the power supply.

DC IN terminal voltage: 13.8V

1) Total illumination display

confirmation

Turn the Transceiver Power ON by pressing the power switch while the [F] key is pressed.

While the [F] key is pressed, all LCD segments light.

2) Full-resetting

After confirming that all LCD segments have lighted described in the Step 1 above, release

the [F] key, and then press the [F] key twice while “FL.RST?” appears on the display.

VCO

After removing 3 screws fixing

Lock voltage the TX-RX unit (B/3), remove

Check

the TX-RX (B/3) unit from the

CN9 connector of the TX-RX

unit (A/3).

1) Frequency: 136.000MHz DVM

RX 2) Frequency: 173.990MHz

TX TX power: Low

TX-RX LV

(A/3)

Check

0.7V or more

4.3V or less

1) Frequency: 136.000MHz

PTT: ON

0.7V or more

4.3V or less

2) Frequency: 173.990MHz

PTT: ON

After observing the VCO

lock voltage, connect the

TX-RX unit (B/3) to the

original position.

3.TX frequency 1) TX power: Low

Adjust Frequency: 145.990MHz

PTT: ON

4.Overvoltage Switch to Adjustment mode

f. counter

ANT

TX-RX VR1

(A/3)

145.990MHz

±150Hz

warning

reference

voltage

and carry out the operations

for adjustment item A.

(Refer to page 28)

Adjust/Check 1) LCD display: DC

Frequency: 145.050MHz

DC power supply

[MENU] Write

(E, E3)

Frequency: 146.050MHz

(K, K2, M, M2)

DC IN terminal voltage: 14.8V

To exit from the Adjustment

Mode, turn the transceiver

power OFF and then ON.

2) Frequency: 145.050MHz

(E, E3)

Check

Alarm sound and

display “DC ERR”

message.

Frequency: 146.050MHz

(K, K2, M, M2)

DC IN terminal voltage: 17.5V

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Receiver section

Measurem ent

Test equipm ent Unit

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

Condition

Term inal

Unit

1.RX BPF

Adjust

Squelch level: 0

1) Frequency: 145.050MHz SSG

TX-RX ANT

VOL

knob

Turn the VOL knob 0.63V

to obtain 0.63V AF

output.

(E, E3)

Oscilloscope

(A/3)

Frequency: 146.050MHz Distortion meter

(K, K2, M, M2) AF V.M

SSG output: –53dBm (501 uV) Dummy load

SSG MOD: 1kHz

SSG DEV: 3kHz

Switch to Adjustment mode

and carry out the operations

for adjustment item E.

(Refer to page 29)

2) LCD display: BPL

Encoder Write

[MENU]

Max Sensitivity

Frequency: 136.050MHz

SSG: –119dBm (0.25 uV)

3) SSG: –113dBm (0.501 uV)

Check

12dB SINAD or

4) LCD display: BPC

Encoder Write

[MENU]

Max Sensitivity

Frequency: 146.050MHz

SSG: –119dBm (0.25 uV)

5) SSG: –120dBm (0.22 uV)

Check

12dB SINAD or

6) LCD display: BPH

Encoder Write

[MENU]

Max Sensitivity

Frequency: 160.050MHz

SSG: –119dBm (0.25 uV)

7) SSG: –113dBm (0.501uV)

Check

12dB SINAD or

2.IF response 1) Frequency : 144.050MHz SSG

12dB SINAD or

less

Check

SSG Frequency: 221.750MHz Oscilloscope

SSG output: –60dBm (224uV) Distortion meter

SSG MOD: 1kHz

Note: If the

specification is not

satisfied, repeat the

operations for

“1. RX BPF

SSG DEV: 3kHz

AF output: 0.63V/8Ω

Adjust”.

3.Squelch /

S-meter

Write

Switch to Adjustment mode SSG

and carry out the operations

for adjustment item C.

(Refer to page 28)

ANT

1) LCD display: SQ1

Frequency: 145.050MHz

(E, E3)

[MENU] Write

Note: In the

Squelch adjust

ments, all 4

Frequency: 146.050MHz

(K, K2, M, M2)

adjusting points

including the S-

meter must be

adjusted.

SSG: –125dBm (0.126uV)

2) LCD display: SQ2

Frequency: 145.050MHz

(E, E3)

[MENU] Write

Squelch

Frequency: 146.050MHz

(K, K2, M, M2)

SSG: –120dBm (0.22uV)

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

Condition

Term inal

Unit

Switch to Adjustment mode

and carry out the operations

for adjustment item D.

(Refer to page 29)

S-meter 3) LCD display: S1

SSG

TX-RX ANT

(A/3)

[MENU] Write

Frequency: 145.050MHz

(E, E3)

Frequency: 146.050MHz

(K, K2, M, M2)

SSG: –120dBm (0.22uV)

4) LCD display: S9

Frequency: 145.050MHz

(E, E3)

[MENU] Write

Frequency: 146.050MHz

(K, K2, M, M2)

SSG: –105dBm (1.26uV)

Squelch level: 1

4.Squelch

Check

1) Frequency: 145.050MHz SSG

Check

Open Squelch

(E, E3)

Frequency: 146.050MHz Distortion meter

(K, K2, M, M2)

Oscilloscope

SSG output: –123dBm (0.158uV)

SSG MOD: 1kHz

SSG DEV: 3kHz

2) SSG: OFF

Close Squelch

Two segments

in S-meter

light.

5.S-meter

Check

1) Frequency: 145.050MHz SSG

(E, E3)

Check

Frequency: 146.050MHz

(K, K2, M, M2)

■■

SSG output: –120dBm (0.22uV)

2) SSG output: –105dBm (1.26uV)

All segments in

S-meter light.

■■■■■■■■■

6.Hum and

noise ratio

Check

1) Frequency: 145.050MHz SSG

TX-RX ANT

(E, E3)

Oscilloscope

(A/3)

Frequency: 146.050MHz Distortion meter

(K, K2, M, M2) AF V.M

SSG output: –53dBm (501uV)

SSG MOD: 1kHz

SSG DEV: 3kHz

AF Output: 0.63V/8Ω

AF V.M = 0dB

2) SSG DEV: OFF

Check

–38dB or less

5% or less

7.AF distortion 1) Frequency: 145.050MHz

Check

(E, E3)

Frequency: 146.050MHz

(K, K2, M, M2)

SSG output: –53dBm (501uV)

SSG MOD: 1kHz

SSG DEV: 3kHz

AF Output: 0.63V/8Ω

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

TX-RX ANT

Adjustm ent

Parts

Specifications/

Rem arks

Item

Condition

Term inal

Unit

Method

Check

8.AF output

Check

1) Frequency: 145.050MHz SSG

400mW or more

(E, E3)

Oscilloscope

(A/3)

Frequency: 146.050MHz Distortion meter

(K, K2, M, M2) AF V.M

SSG output: –53dBm (501uV)

SSG MOD: 1kHz

SSG DEV: 3kHz

AF distortion: 10%

9.Current

Drain

Squelch level: 5

1) Frequency: 145.050MHz SSG

Check

80mA or less

400mA or less

Check

(E, E3)

Frequency: 146.050MHz

(K, K2, M, M2)

Am meter

SSG output: OFF

2) Frequency: 145.050MHz

(E, E3)

Frequency: 146.050MHz

(K, K2, M, M2)

SSG output: –53dBm (501uV)

SSG MOD: 1kHz

SSG DEV: 3kHz

VOL knob: Max

Transm itter section

Measurem ent

Adjustm ent

Specifications/

Rem arks

Item

Condition

Test equipm ent

DC power supply

DVM

Unit

TX-RX

(A/3)

Term inal

Unit

Parts

Method

1.TX power

Battery terminal voltage:

Note: Do not

use the DC IN

terminal.

Write (Battery 7.5V

GND

Note: Adjust the output voltage from DC power supply until the voltage at the battery terminal be-

terminal: 7.5V)

comes 7.5V while the transceiver is transmitting.

Switch to Adjustment mode

and carry out the operations

for adjustment item F.

(Refer to page 29)

1)LCD display: P7L,

Frequency: 144.000MHz

PTT: ON

Power meter

Am meter

ANT

Encoder Write

[MENU]

4.8W ±0.05W

2.0A or less

2)LCD display: P7C,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

High power

3) LCD display: P7H,

Frequency: 145.995MHz

PTT: ON

Encoder Write

[MENU]

Switch to Adjustment mode

and carry out the operations

for adjustment item G.

(Refer to page 30)

4)LCD display: P7L,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

1.5W ±0.05W

1.4A or less

Mid power 5) LCD display: P7C,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

Condition

Term inal

Unit

6) LCD display: P7H,

Frequency: 145.995MHz

PTT: ON

Power meter

Am meter

TX-RX ANT

(A/3)

Encoder Write

[MENU]

Mid power

Switch to Adjustment mode

and carryout the operations

for adjustment item H.

(Refer to page 30)

7)LCD display: P7L,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

0.5W ±0.05W

0.8A or less

8)LCD display: P7C,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

Low power

9)LCD display: P7H,

Frequency: 145.995MHz

PTT: ON

Encoder Write

[MENU]

2.TX power

Write (DC IN

Connect the optional PG-2W DC power supply

DC cable to the power supply. DVM

TX-RX DC IN

(A/3)

terminal: 13.8V) DC IN terminal voltage: 13.8V

Switch to Adjustment mode Power meter

ANT

and carry out the operations Am meter

for adjustment item I.

(Refer to page 31)

1)LCD display: P13L,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

5.0W - 5.1W

2.0A or less

2)LCD display: P13C,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

High power

3)LCD display: P13H,

Frequency: 145.995MHz

PTT: ON

Encoder Write

[MENU]

Switch to Adjustment mode

and carry out the operations

for adjustment item J.

(Refer to page 31)

4)LCD display: P13L,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

1.5W ±0.05W

1.4A or less

5)LCD display: P13C,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

Mid power

6)LCD display: P13H,

Frequency: 145.995MHz

PTT: ON

Encoder Write

[MENU]

Switch to Adjustment mode

and carry out the operations

for adjustment item K.

(Refer to page 32)

7) LCD display: P13L,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

0.5W ±0.05W

0.8A or less

Low power

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

Condition

Term inal

Unit

8) LCD display: P13C,

Frequency: 145.000MHz

PTT: ON

Power meter

Am meter

TX-RX ANT

(A/3)

Encoder Write

[MENU]

0.5W ±0.05W

0.8A or less

Low power

9) LCD display: P13H,

Frequency: 145.995MHz

PTT: ON

Encoder Write

[MENU]

3.Battery

terminal

reference

voltage

Switch to Adjustment mode

and carry out the operations

for adjustment item B.

(Refer to page 28)

TX power: Low

Adjust/

Check

1)LCD display: BAT

Frequency: 145.000MHz

(E, E3)

DC power supply

DVM

[MENU] Write

LCD

Check

All segments

are lighted.

Frequency: 146.000MHz

(K, K2, M, M2)

■■■■■■■■■

PTT: ON

Battery terminal voltage: 7.5V

(Adjust the output voltage from DC power supply until the voltage at the

battery terminal becomes 7.5V while the transceiver is transmitting.)

To exit from the Adjustment

LCD

Check

4 to 6 seg-

ments are

lighted.

Mode, turn the transceiver

power OFF and then ON.

2)Frequency: 145.000MHz

■■■■ ~

■■■■■■

(E, E3)

Frequency: 146.000MHz

(K, K2, M, M2)

PTT: ON

Battery terminal voltage: 6.4V

(Adjust the output voltage from DC power supply until the voltage at the

battery terminal becomes 6.4V while the transceiver is transmitting.)

4.DCS

Switch to Adjustment mode Linear detector

TX-RX ANT

(A/3)

modulation and carry out the operations Oscilloscope

balance

for adjustment item L.

(Refer to page 32)

Detector: +P, –P

HPF: OFF LPF: 3kHz

De-emphasis: OFF

TX power: Low

1)LCD display: DCS.BAL

Frequency: 145.000MHz

(E, E3)

VR6

VR5

By tuning the

VR6, adjust

the modulation

wave until

Frequency: 146.000MHz

(K, K2, M, M2)

if becomes the

square wave.

4.2kHz

PTT: ON

5.MAX DEV

To exit from the Adjustment Linear detector

ANT

MIC

±0.1kHz

Mode, turn the transceiver

power OFF and then ON.

MIC terminal input

AG: 1kHz/80mV

According to the

larger +, –.

Oscilloscope

Detector: +P, –P

HPF: OFF LPF: 15kHz

De-emphasis: OFF

TX power: Low

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

TX-RX ANT

(A/3) MIC

Adjustm ent

Parts

VR5

Specifications/

Rem arks

Item

Condition

Term inal

Unit

Method

4.2kHz

1)Frequency: 145.000MHz

(E, E3)

Linear detector

±0.1kHz

According to the

larger +, –.

Frequency: 146.000MHz

(K, K2, M, M2)

PTT: O N

Oscilloscope

6.MIC

MIC terminal input

AG: 1kHz

Change the AG

output level to

obtain 3kHz

deviation.

4mV - 12mV

sensitivity

Check

Detector: P-P/2

HPF: OFF

LPF: 15kHz

De-emphasis: OFF

TX power: Low

1)Frequency: 145.000MHz

(E, E3)

Frequency: 146.000MHz

(K, K2, M, M2)

PTT: ON

7.Tone

deviation

Switch to Adjustment mode Linear detector

and carry out the operations

for adjustment item M.

(Refer to page 33)

Detector: P-P/2

ANT

HPF: OFF

LPF: 3kHz

De-emphasis: OFF

TX power: Low

1)LCD display: DVL,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

0.8kHz ±50Hz

2)LCD display: DVC,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

3)LCD display: DVH,

Frequency: 145.990MHz

PTT: ON

Encoder Write

[MENU]

8.DCS

deviation

Switch to Adjustment mode

and carry out the operations

for adjustment item N.

(Refer to page 33)

Detector: +P HOLD

HPF: OFF

LPF: 3kHz

De-emphasis: OFF

TX power: Low

1)LCD display: DVL,

Frequency: 144.000MHz

PTT: ON

Encoder Write

[MENU]

0.8kHz ±50Hz

2)LCD display: DVC,

Frequency: 145.000MHz

PTT: ON

Encoder Write

[MENU]

3)LCD display: DVH,

Frequency: 145.990MHz

PTT: ON

Encoder Write

[MENU]

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TH-K2AT/K2E/K2ET

ADJUSTMENT

Measurem ent

Test equipm ent Unit

Adjustm ent

Parts Method

Specifications/

Rem arks

Item

9.VOX

Condition

Term inal

Unit

Switch to Adjustment mode AG

and carry out the operations

for adjustment item O.

(Refer to page 34)

TX-RX MIC

(A/3)

Sensitivity

Write

TX power: Low

1)LCD display: VOX1

Frequency: 145.000MHz

(E, E3)

[MENU] Write

Frequency: 146.000MHz

(K, K2, M, M2)

AG: 1kHz/80mV

2)LCD display: VOX9

Frequency: 145.000MHz

(E, E3)

[MENU] Write

Frequency: 146.000MHz

(K, K2, M, M2)

AG: 1kHz/1.5mV

10. VOX

To exit from the Adjustment

Check

Does not

transmit.

Operation Mode, turn the transceiver

Check

power OFF and then ON.

1)Frequency: 145.000MHz

(E, E3)

Frequency: 146.000MHz

(K, K2, M, M2)

VOX Gain: 4

AG: OFF

2)AG: 1kHz/100mV

Detector: P-P/2

Transmits.

11. DTMF

DEV

HPF: OFF

Check

LPF: 15kHz

De-emphasis: OFF

TX power: Low

1)Frequency: 145.000MHz

(E, E3)

Linear detector

ANT

Check

2.0kHz - 4.2kHz

Frequency: 146.000MHz

(K, K2, M, M2)

Send DTMF code “D”

Note: For details of sending DTMF code “D”,

refer to the “Single Tone Mode” on page 27.

Detector: P-P/2

12. 1750Hz

Check

2.5kHz - 4.5kHz

Tone DEV HPF: OFF

Check

(E, E3 types

only)

LPF: 15kHz

De-emphasis: OFF

TX power: Low

1)Frequency: 145.000MHz

(E, E3)

Send 1750Hz Tone

13. Protection TX power: High

Check 1)Frequency: 145.000MHz

(DC IN

terminal: 13.8V)

Am meter

Check

2.4A or less

(E, E3)

Frequency: 146.000MHz

(K, K2, M, M2)

ANT: OPEN

PTT: ON

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TH-K2AT/K2E/K2ET

ADJUSTMENT / TERMINAL FUNCTION

Adjustm ent points

TX-RX unit (A/ 3)

Com ponent side view

TERMINAL FUNCTION

CN No. Pin No. Pin Nam e

Function

TX-RX UNIT (A/ 3) : TX-RX↔VOL/ ENC

CN1

GND

Vol-OUT

Vol-IN

EN2

RX audio volume output

RX audio volume input

Encoder 2

ANT

SET

GND

VR5

EN1

Encoder 1

VR6

LCD

BTEMP

GND

TX-RX UNIT (A/ 3) : TX-RX↔Internal speaker

VR1

CN2

SPK

Internal speaker audio

SPG

Audio ground

TX-RX UNIT (A/3)

Com ponent side view

TX-RX UNIT (A/ 3) : TX-RX↔TX-RX UNIT (B/ 3) : 10KEY

J 3

MIC

J 4

J 2

DC IN

CN6,

PTT

CN7

KIN4

KYO2

KYO1

Key matrix input

Key matrix output (MONI key)

Key matrix output (LAMP key)

LCD backlight control

GND

VR1 : TX frequency

VR5 : MAX DEV

VR6 : DCS modulation valance

LV : VCO lock voltage terminal

GND

TX-RX UNIT (A/ 3) : TX-RX↔TX-RX UNIT (C/ 3) : PTT

CN8,

CN9

KIN1

Key matrix input

Internal microphone

Key matrix output

8V power supply

Key matrix input

Microphone ground

Key illumination control

GND

KYO3

KIN4

MIG

LAMP

GND

KYO0

KIN2

KYO1

KIN0

KYO2

KIN3

Key matrix output

Key matrix input

Key matrix output

Key matrix input

Key matrix output

Key matrix input

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TH-K2AT/K2E/K2ET PC BOARD

TX-RX UNIT (X57-674X-XX) (A/ 3) Com ponent side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

C24

R19

CN6

R20

D62

D63

D64

D65

R18

R24

D70

R30

IC1

R252

C38

C37

CN9

C26

R21

C27

R231

SET

C42

R36

C40

C41

R34

Q12

Q15

C66

R33

C128

R144

R143

C126

C70

C57

C271

R137

TH3

Q27

C78

R131

Q23

VR6

R149

R151 R152

R153

DCS BAL

C189 C188

L46

TH1

C272

VR1

FREQ

R145

C510

Q13

C54

C55

C56

R38

L45

C114

D14

C195

C186

R90 C125

R351

C213

R82

R74

IC2

R264

C166

D15

C190

C108

R76

C117

R261

Q34

R127

C161

C176

C116

R260

R166

R165

R171

C106

C182

IC3

R212

D31

C115

R116 C168

C320

R118

C170

R17

R135 C174

C173

J 2

DC IN

R167

Q21

R117

C175

Q22

R215

R216

C212

C203

R123

C171

R324

C204

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address

IC1

IC2

IC17

Q21

Q22

Q23

Q24

Q27

Q31

Q34

Q35

10D

Q36

Q37

Q38

Q41

Q47

Q51

Q53

Q55

10E

Q56

Q57

Q59

D26

D31

D34

D40

D41

D60

D62

D63

D64

D65

D69

D70

D71

D72

D80

10G

IC3

IC6

Q12

Q13

Q14

Q15

Q20

IC9

10E

D14

D15

D16

D25

IC10

IC11

IC15

10F

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PC BOARD TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (A/ 3) Com ponent side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

CN6

C310

POWER

COM0

COM1

COM2

COM3

SEG0

R246 R248

LCD

R252

SEG1

ANT

SEG2

SEG3

SEG4

Q55

SEG5

R224

R207

SEG6

SEG7

C253

SEG8

SEG9

C249

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

Q31

R203

C247

C248

R204

C304

R242

R227

R226

IC10

Q56

R237

C252

C291

C290

TH1

C118

C510

IC15

C250

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

R202

Q37

R236

R238

C360

R244

C246

C300

R264

L63

R261

Q41

R260

R166

R165

R171

Q53

C309

J 3

MIC

36 SEG31

R170

J 4

C203

204

J 72-0883-09 (A/3)

Com ponent side

Layer 1

Layer 2

Layer 3

Layer 4

Foil side

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TH-K2AT/K2E/K2ET PC BOARD

TX-RX UNIT (X57-674X-XX) (A/ 3) Foil side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

Q17

C96

C100

C162

R291

C160 R111

C92

C94

C158

R110

L20

R102

L22

L40

D10

R345

C502 C159

C90

L18

CN15

C88

CP32 CP33

L17

R235

C503

C366

120

R310

R313

C316

C330

IC8

R318

CN1

C293 C294

Q52

C207

R162

D24

C229

C335

C336

R353

C332

C228 R179

R180

R191

R190

C224

C223

R192

R183

C242

R197

C227

R182

C237

R186

C285

R193

C241

IC4

C283

C231

R241

C240

D79

R17

C358

R239 C297

C238

R195

J 72-0883-09 (A/3)

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address

IC4

IC5

IC8

IC12

IC16

10E

10K

Q33

Q52

Q58

D21

D22

D24

D27

D30

D32

D33

D35

10J

D36

D73

D74

D79

11I

D10

D12

D13

D17

D18

D19

D20

Q10

Q11

Q16

Q17

Q29

Q30

10J

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PC BOARD TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (A/ 3) Foil side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

R12

R100

R99

Q17

R46

C145

C11

C500 C501

L28

C136

L29

C17

R15

R16

R14

C18

R11

R102

C137

C19

R96

R98

R45

R47

C76

L15

L66

Q16

R341

R97

R347

C90

C325

R346

R91

C134

R93

R92

C129

C131

C130

C64

R49

C75

L10

C65

C503

C366

R51

Q10

R88

C72

R64

L14

C67

L12

C326

R53

L11

C73

C84

C68

R41

R55

C71

C327

R56

C323

D73

R169

D35

D33

C202

C282

R164

C207 R273

R162

IC16

R161 R160

C353

C209

C201

R178 C205

R175

C228 R179

R180

C210 R155 R156

R177

C178

C224

L50

C223

183

C227

R182

Q33

C179

C124

C221

R173

C177

C231

C219

R176

C358

Com ponent side

Layer 1

Layer 2

Layer 3

Layer 4

Foil side

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TH-K2AT/K2E/K2ET PC BOARD

TX-RX UNIT (X57-674X-XX) (A/ 3) Com ponent side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

PC BOARD TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (A/ 3) Com ponent side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

C24

R19

CN6

C310

POWER

R20

D62

D63

D64

D65

R18

R24

D70

COM0

COM1

COM2

COM3

SEG0

R246 R248

R30

LCD

IC1

R252

C38

C37

CN9

C26

R21

C27

SEG1

ANT

R231

SET

SEG2

C42

R36

SEG3

C40

SEG4

Q55

C41

SEG5

R224

R207

SEG6

R34

Q12

Q15

SEG7

C66

R33

C253

C128

SEG8

SEG9

R144

R143

C249

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

SEG16

SEG17

SEG18

Q31

C126

C70

C57

C271

R203

C247

C248

R204

R137

TH3

C304

R242

Q27

C78

R131

Q23

VR6

R149

R227

R226

R151 R152

R153

DCS BAL

IC10

Q56

R237

C252

C291

C290

C189 C188

L46

TH1

C118

C272

VR1

FREQ

R145

C510

Q13

IC15

C54

C55

C56

R38

C250

L45

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

C114

D14

R202

C195

C186

R90 C125

R351

Q37

R236

R238

C213

R82

R74

C360

R244

C246

IC2

C300

R264

C166

L63

D15

C190

C108

R76

C117

R261

Q34

R127

C161

C176

C116

Q41

R260

R166

R165

R171

C106

C182

IC3

R212

D31

C115

Q53

C309

R116 C168

J 3

MIC

C320

R118

C170

36 SEG31

R170

R135 C174

C173

J 4

J 2

DC IN

R167

Q21

R117

C175

Q22

R215

R216

C212

C203

R123

C171

R324

C204

J 72-0883-09 (A/3)

Com ponent side

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address

Layer 1

Layer 2

Layer 3

Layer 4

IC1

IC2

IC17

Q21

Q22

Q23

Q24

Q27

Q31

Q34

Q35

10D

Q36

Q37

Q38

Q41

Q47

Q51

Q53

Q55

10E

Q56

Q57

Q59

D26

D31

D34

D40

D41

D60

D62

D63

D64

D65

D69

D70

D71

D72

D80

10G

IC3

IC6

Q12

Q13

Q14

Q15

Q20

Foil side

IC9

10E

D14

D15

D16

D25

IC10

IC11

IC15

10F

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TH-K2AT/K2E/K2ET PC BOARD

TX-RX UNIT (X57-674X-XX) (A/ 3) Foil side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

PC BOARD TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (A/ 3) Foil side view (J 72-0883-09 A/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

R12

R100

R99

Q17

R46

C96

C145

C11

C100

C500 C501

L28

C136

L29

C162

R291

C17

R15

R16

R14

C18

C160 R111

C92

C94

C158

R11

R110

L20

R102

C137

L22

L40

C19

D10

R345

C502 C159

R96

R98

R45

R47

C76

L15

L66

Q16

R341

R97

R347

C90

L18

C325

R346

CN15

R91

C134

R93

R92

C129

C131

C130

C64

R49

C88

CP32 CP33

L17

C75

R235

L10

C65

C503

C366

R51

Q10

R88

120

C72

R64

L14

R310

C67

L12

C326

R53

L11

R313

C73

C84

C68

R41

R55

C316

C71

C327

R56

C330

C323

IC8

R318

D73

CN1

C293 C294

R169

D35

D33

C202

C282

Q52

R164

C207 R273

R162

IC16

D24

C229

R161 R160

C353

C335

C336

C209

C201

R353

C332

R178 C205

R175

C228 R179

R180

C210 R155 R156

R191

R190

R177

C178

C224

L50

C223

R192

R183

C242

R197

C227

R182

Q33

C237

R186

C285

R193

C241

IC4

C179

C124

C221

R173

C283

C177

C231

R241

C240

D79

C219

R176

C358

R239 C297

C238

R195

J 72-0883-09 (A/3)

Com ponent side

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address

Layer 1

Layer 2

Layer 3

Layer 4

IC4

IC5

IC8

IC12

IC16

10E

10K

Q33

Q52

Q58

D21

D22

D24

D27

D30

D32

D33

D35

10J

D36

D73

D74

D79

11I

D10

D12

D13

D17

D18

D19

D20

Q10

Q11

Q16

Q17

Q29

Q30

Foil side

10J

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TH-K2AT/K2E/K2ET PC BOARD

TX-RX UNIT (X57-674X-XX) (B,C/ 3) Com ponent side view (J 72-0883-09 B,C/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

MIC1

–

D42

1/F

2/VFO

3/MR

F/CALL

D43

D46

VFO

D47

D44

CALL

J 72-0883-09 (B/3)

PTT

MONI

LAMP

J 72-0883-09 (C/3)

Ref. No. Address

Com ponent side

D42

D43

D44

D46

D47

Layer 1

Layer 2

Layer 3

Layer 4

Foil side

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PC BOARD TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (B,C/ 3) Foil side view (J 72-0883-09 B,C/ 3)

0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

CN8

C243

Q50

KIN3 KYO2

KIN0 KYO1

KIN2 KYO0

GND LAMP

MIG KIN4

–

KYO3

KIN1

R337

R230

J 72-0883-09 (B/3)

CN7

J 72-0883-09 (C/3)

Ref. No. Address

Com ponent side

Q50

D48

D49

Layer 1

Layer 2

Layer 3

Layer 4

11C

11B

Foil side

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SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

MOD

VOLIN

5MS

NAR

QT/DQT

NAR

QT/DQT

ENCA

ENCB

ENCA

ENCB

5MS

2.08V

T:0V

R:4.89V

R170

47k

(D)

TX LED

BUSY LED

CTCSS/DCS/WX FILTER

IC17

R157

330k

NJM2902V

T:73mV

R:3.39V

T:3.29V

R:110mV

R158

330k

R264

C331

R165

820k

R167

180k

V+

GND

TX/BUSY

LED SW

1000p

C320

WX1050Hz

C350

R257

R168

180k

R324

47k

C349

0.1u

C290

C291

C212

RXLED

NOAA

C321

0.012u

1000p

R344

Q59

5MV

SIGIN

WX DETECTION AMP

C195

10u10

R141

18k

TONE

REM

VOXIN

T:4.92V

R:0V

R145

4.7k

R146

18k

VR6

100k

MIC AMP

DCS BAL

R143

IC16

NJM2904V

R163

470

C198

R330

470

R153

560k

V+

C201

C208

C193

R147

470

1200p

R156

82p

R144

R155

100k

VR5

50k

4.7u6.3

R164

100k

C202

GND

Q27

ROTARY

ENCODER

10k(D)

2SK1830

MAX DEV

270p

C210

C209

0.01u

W/N

VOL KNOB

ENCA

GND

1000p

WIDE/NARROW

CHANGEOVER SW

T:4.96V

R:0V

ENCB

VOLIN

VOLOUT

GND

C235

0.01u

C236

0.01u

REM

5MV

C205

C220

R161

C206

0.015u

4700p

0.047u

R190

47k

R191

47k

HPF

CN1

IC5

NJM2107F

D74,79

LIMITER

C358

C219

C505

C221

0.01u

C225

R175

2.2k

R178

0.047u

Q30

2SC4617(R)

V+

R192

470

VOX

DETECTION AMP

D79

DA221

D74

DA221

MIC

R194

10k

RXD

MUTE

Q29

2SC4919

R182

R195

100

R196

10k

R183

33k

PTT

MIC

PTTE

D27

D24

D27

MIC

C229

C228

0.1u

MIC ALC

RECTIFICATION

R197

100

5MS

0.1u

D24

D22

RB706F-40

MA742

1SS361

VOX DETECTION

RECTIFICATION

MIC MUTE

CONTROL

SPG

MIG

TXD

MICM

REM/TXD

SPK

RXD

PTTE

AFO

R199

R200

10k

R201

4.7k

MIG

TXD

SPM

VOLOUT

D26

IC6

TA7368F

SP MUTE SW

Q56

CN2

3.23V

C246 DISCHARGE

L49

CPH3417

C246

SPK

7.07V

POUT

8 OHM

100u10

SPG

SP MUTE

SPEED UP

PW-GND VCC

PRE-GND

REVERSE CURRENT

PREVENTION

D25

C252

100p

R207

R209 R223

100k 220k

R224 C258

18k 0.1u

Q31

DTMF/BEEP

13.8V

D32

PHASE

VIN

2SK1830

MA2S111

R203

RB051L-40

L50

RIPPLE

C253 R206

DC IN

C352

470k

C270

1000p

10u10

AF AMP

1000p

D80

C338

RB521S-30

D80

Q31

DTMF/BEEP/1750/W-ALT

REVERSE CURRENT

PREVENTION

Q56 OPERATION SW

C506

REVERSE CURRENT

PREVENTION

5C/5R/5T AVR

1000p

2.5A

D33

13.58V

7.07V

Q37

2SB1184(Q,R)

R332

R210

D30

RB521S-30

RB051L-40

C353

1000p

Q37

0.5A

13.43V

11.45V

Q33

2SB1184(Q,R)

R211

470k

AF AMP/

LAMP AVR

BATTERY

TERMINAL

CHARGE SW

C284

1000p

D33,35,36

Q38

2SC4617(R)

REVERSE

CURRENT

PREVENTION

C285

1000p

AVR

CONSTANT-

VOLTAGE

Q35

2SK1830

4.80V

D31

DA221

RXD

PTTE

Q36

2SJ347

DC IN

DETECTION

D35

CONSTANT-

CURRENT

CIRCUIT

MIG

4.31V

TXD

RB521S-30

SPM

C282

1000p

11.5V AVR

Q38

5C/5R/5T AVR

Q36

Q37 OPERATION SW

D36

NI-MH

TEMPERATURE

DETECTION

AFAMP

BTDET

DCDET

BTEMP

CHARGE

Q34

2SK1830

RB521S-30

1000p

C281

Q33 OPERATION SW

BTEMP

CHARGE

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X57-674 1/5

SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

MOD

VOLIN

5MS

NAR

QT/DQT

ENCA

ENCB

ENCA

ENCB

TEMP

FINAL

AFM

KAPC

DATA

LCD (B38-0881-05)

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

5MV

RXLED

NOAA

TEMP

SMV

SQV

5MV

SIGIN

5MS SW

LAMP

TONE

REM

VOXIN

R342

R343

5C SW

VOX

5R SW

5T SW

R282

R283

BATT

C336

0.1u

COM0

COM1

COM2

C332

0.1u

C335

0.1u

SEG15

SEG14

CP31

3.9k

COM3

COM2

COM3

VSS

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

SEG13

SEG12

SEG11

SEG10

SEG9

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

FINAL

MPU

IC8

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

5C(SAVE)

PTTI

90522BPFFG139

R318

PTTI

PTTE

TXD

RXD

4.83V

R313

3.3k

SPM

AFM

VCC

KAPC

BPF/APC

MICM

R310

3.9k

BPF/APC

HST(VCC)

MD2

VOX

EEPCS

EEPDI

EEPCS

MD1

EEPDI

MD0

DATA

CLOCK

RESET

C359

0.1u

C360

0.1u

DTMF/BEEP

INT0

PWR SW

RESET

C293

47p

ON:4.76V

R235

KOUT3

KOUT2

KOUT1

KOUT0

VUKEY

TYPE

KIN4

Q52

RN1107

BEAT SHIFT SW

KIN3

R285

KIN2

KIN1

KIN0

RXD

PTTE

MIG

TXD

SPM

5C/5R/5T AVR

AFAMP

5C/5R/5T AVR

BTDET

DCDET

BTEMP

CHARGE

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X57-674 2/5

SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

MOD

VOLIN

5MS

NAR

QT/DQT

TEMP

FINAL

AFM

TEMP

FINAL

AFM

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

5MV

C316

0.1u

R237 100k

EEPROM

T:4.95V

R:0V

T:0V

R:4.90V

VCC

HOLD

SCK

5.0V AVR

5C SW

5MS SW

5T SW

Q57

RN2105

R238

R236

Q41

RN2105

4.83V

4.66V

T:4.95V

R:0V

GND

5.01V

Q55

CPH3317

5R/5MV

IC15

AT25160N10SI27

C347

1000p

5MS SW

LAMP

C348

1000p

5C SW

VOX

5R SW

5T SW

R239

R241

330k

BATT

4.68V

4.69V

C311

R242

R243

330k

0.1u

VSS

OUT

RESET

VDD

5.0V AVR

INT0

4.92V

R244

IC11

S-80930CNNBG80

IC10

S-80844CNNBB85

4.4V VOLTAGE DETECTION

3.3V VOLTAGE DETECTION

R248

3.9k

R246

3.9k

BPF/APC

L63

PTTI

D60

KEY TYPE

DETECTION

D62-65

TX-RX UNIT

(X57-674X-XX)(C/3)

MARKET CODE

DETECTION

TYPE

PTT

S70-0485-05

CN7

CN6

PTT

MONI

LAMP

KIN4

KYO2

KYO1

D48,49

LCD

ILLUMINATION

LED

BPF/APC

EEPCS

EEPDI

GND

D48

D49

B30-2237-05

D69-72

REVERSE

CURRENT

PTT BOARD

SET

PREVENTION

ON:6.90V

Q51

RN4902

INT0

PWR SW

RESET

LCD LED SW

TX-RX UNIT

(X57-674X-XX)(B/3)

CN9

CN8

KOUT3

KOUT2

KOUT1

KOUT0

VUKEY

TYPE

KIN4

MIC1

KIN3

KIN2

KIN1

KIN0

1/F

2/VFO

3/MR

F/CALL

MIG

VFO

D42-44,46,47

5C/5R/5T AVR

KEY

ILLUMINATION

LED

Q50

2SK1830

CALL

KEY LED SW

ON:4.78V

10KEY BOARD

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X57-674 3/5

SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

MOD

VOLIN

5MS

NAR

QT/DQT

TEMP

FINAL

AFM

TEMP

FINAL

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

CN15

CN17

C19

15p

D1,2

R11 150k

RF AMP

R13 6.8k

VCO FREQUENCY CONTROL

VCO MODULATION

RF AMP

2SC5066(O)

L68

C15

12p

L3 82n

R348

220

10u

1000p

2SC5488

1SV325

2SC5488

VCO

C13

0.5p

(B)

1000p

FREQUENCY SHIFT

HSC277

47k

4.45V

RIPPLE FILTER

2SC4617(R)

2SK1830

3.63V

FINAL

SPEED UP

SHIFT

VCO SHIFT CONTROL SW

C24

1000p

L53 15n

R19 120k

R31

2.2k

R30

1.2k

C37

1000p

C22

18p

C20

C38

0.01u

2SC5488

C50 22p

D16

RF AMP

4.45V

PLL LOCK DETECTION

R35 120k

FREQ

D16

R32

PLL IC

VR1

500k

VCC

MA2S111

BPF/APC

R37 56k

C40

0.1u

1.58V

4.63V

KAPC

TEMP

R36 10

12.8MHz

L64

4.7u

C51

22p

GND OUTPUT

CP2

3.9k

L77-1931-05

PLLEN

DATA

CLOCK

PLLLD

CF1

L72-0968-05

450kHz

T:0V

R:4.63V

R131 330k

4.76V

C173

180p

2nd L.O.

0.53V

SQ FILTER

C187

C166

0.01u

R132

C174

180p

2.2k

Q23

KTC4082

TRIPLER

FM IC

IC3

TA31136FN

R116

120k

4.82V

AF FILTER

C190

R124

3.3k

C169

C170

R119

1.8k

R123

1.8k

R122

2.7k

Q21

R134

390k

0.01u

2SC4617(R)

R128

C180

120p

0.068u

R117

0.068u

0.72V

C167

IF AMP

3.3k

C191

Q24

2SC5488

0.1u

2.7k

(D)

0.01u

Q20

2SK1830

Q22

RN2105

CD1

450kHz

AF MUTE SW

R120

2.7k

WIDE/NARROW

CHANGEOVER SW

W:111mV

N:4.79V

BPF/APC

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X57-674 4/5

SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

12.46V

T:4.23V

R:0V

T:4.85V

R:0V

RF SW

C75

C329

56p

L55

10n

L15

C68

18p

C326

TX PATH

RF AMP

C65 18p

R271

6.8n

1000p

1.30V

HSC277

1000p

L12

10n

Q11

2SK2596

2SC5488

DRIVE

AMP

R347

100

1.40V

DRIVE

AMP

HSC277

RF SW

Q10

2SC4926YD

2.00V

R34

3.3k

Q15

2SC4617(R)

VOLTAGE

DROP

4.90V

Q10 OPERATION SW

VGG

VDD

C137

L28

27n

L29 22n

12.29V

Q12

L17

C89

POWER

AMP

2SK3476

18.5n

1000p

ANTENNA SW

D10

L20

L21

L22

C136

10p

T:0V

R:0V

C94

ANT

1000p

C96 12p C98 8p C100 7p

XB15A709

CN10

(G)

(B)

R61 220

R62 220

Q12 GATE

VOLTAGE SW

Q58

2SK1830

D17

OVER INPUT

PROTECTION

2.29V

(HIGH POWER)

D12,13

HSM88AS

FINAL

ANTENNA SW

R76 150k (D)

APC

R74

100k

C108

100p

DIFFERENTIAL

AMP

VGG

(D)

IC2

NJM2904V

APC OUTPUT SW

DC SW

TEMP

COMPENSATION

AOUT

V+

BOUT

B-IN

R85 560

A-IN

A+IN

GND

R81

390k

R75

C112 1000p

B+IN

100k

(D)

Q14

RN4902

APC CIRCUIT

OPERATION SW

Q13

2SK1830

R83 56k

APC

R79

C110

C356

1000p

0.01u

APC OUTPUT

VOLTAGE LIMITTER

150k (D)

KAPC

TEMP

D14

2.68V

REVERSE CURRENT PREVENTION

38.85MHz

1st IF

XF1

D18,19

RX BPF TUNING

1st MIXER

L27

680n

R90

330

L71-0619-05

4.71V

C128

0.01u

R88

Q16

3SK318

2.42V

4.66V

D20,21

RX BPF TUNING

C500

1.5p

C501

1.5p

330

C142

1000p

R341

R102

0.27V

C159

C502

(B)

R345

(B)

Q17

2SK1215(E)

RX 1st AMP

C162

R290

R291

47p

(G)

X57-674X-XX

0-11 TH-K2AT

2-71 TH-K2E

2-72 TH-K2ET

0-21 TH-K2AT

D44

D47

D60

D62

D63

Q59

C320

8200p

C321

C350

0.1u

C510

C511

C512 C514

C515

C516 C517

K,K2

B30-2205-05

MA2S111

2SK1830

8200p

470p

100p

470p

B30-2205-05

M,M2

MA2S111

X57-674X-XX

0-11 TH-K2AT

2-71 TH-K2E

2-72 TH-K2ET

0-21 TH-K2AT

R230

220

R257

R258

R259

R261

47k

R264

R344

CN17

K,K2

56k

680

680k

100k

E23-1081-05

220

M,M2

Note : The components marked with a

dot ( ●) are parts of layer1.

BPF/APC

Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).

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X57-674 5/5

SCHEMATIC DIAGRAM

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX)(A/3)

MOD

VOLIN

12.46V

5MS

T:4.23V

R:0V

T:4.85V

R:0V

RF SW

C75

C329

56p

L55

10n

L15

C68

18p

C326

NAR

QT/DQT

NAR

QT/DQT

ENCA

ENCB

NAR

QT/DQT

ENCA

ENCB

NAR

TX PATH

RF AMP

C65 18p

R271

6.8n

1000p

1.30V

QT/DQT

HSC277

1000p

L12

10n

Q11

2SK2596

2SC5488

DRIVE

AMP

ENCA

ENCB

ENCA

ENCB

TEMP

FINAL

AFM

TEMP

FINAL

AFM

TEMP

FINAL

AFM

TEMP

FINAL

AFM

TEMP

FINAL

R347

100

1.40V

DRIVE

AMP

HSC277

RF SW

Q10

2SC4926YD

5MS

LCD (B38-0881-05)

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

DATA

CLOCK

SHIFT

PLLLD

PLLEN

SMV

SQV

KAPC

2.08V

2.00V

T:0V

R:4.89V

R170

47k

(D)

TX LED

BUSY LED

CTCSS/DCS/WX FILTER

R34

3.3k

CN15

CN17

IC17

R157

330k

5MV

NJM2902V

Q15

2SC4617(R)

C19

15p

VOLTAGE

DROP

C316

0.1u

T:73mV

R:3.39V

T:3.29V

R:110mV

4.90V

R237 100k

EEPROM

Q10 OPERATION SW

R158

330k

D1,2

R11 150k

RF AMP

R13 6.8k

VCO FREQUENCY CONTROL

VCO MODULATION

R264

C331

R165

820k

RF AMP

VGG

2SC5066(O)

L68

C15

12p

L3 82n

R348

220

VDD

V+

GND

TX/BUSY

LED SW

1000p

C320

R167

180k

10u

1000p

2SC5488

T:4.95V

R:0V

T:0V

R:4.90V

1SV325

WX1050Hz

C350

VCC

HOLD

SCK

5.0V AVR

5C SW

C137

L28

27n

L29 22n

2SC5488

12.29V

5MS SW

VCO

R257

5T SW

R168

180k

R324

47k

C349

0.1u

Q12

L17

C89

Q57

RN2105

R238

R236

Q41

RN2105

C13

4.83V

4.66V

T:4.95V

R:0V

POWER

AMP

2SK3476

GND

C290

1000p

C291

1000p

C212

18.5n

RXLED

NOAA

RXLED

NOAA

1000p

ANTENNA SW

D10

0.5p

(B)

L20

L21

L22

C136

10p

5.01V

1000p

Q55

CPH3317

C321

0.012u

FREQUENCY SHIFT

T:0V

R:0V

C94

R344

HSC277

47k

ANT

1000p

C96 12p C98 8p C100 7p

5R/5MV

IC15

AT25160N10SI27

XB15A709

TEMP

SMV

SQV

5MV

CN10

(G)

(B)

Q59

C347

1000p

5MV

SIGIN

5MV

SIGIN

WX DETECTION AMP

5MS SW

LAMP

5MS SW

LAMP

C348

R61 220

R62 220

C195

10u10

R141

18k

Q12 GATE

VOLTAGE SW

TONE

REM

VOXIN

TONE

REM

VOXIN

1000p

R342

R343

4.45V

T:4.92V

R:0V

R145

4.7k

R146

18k

5C SW

VOX

5R SW

5T SW

5C SW

VOX

5R SW

5T SW

RIPPLE FILTER

2SC4617(R)

VR6

2SK1830

3.63V

R282

R283

Q58

2SK1830

100k

D17

MIC AMP

DCS BAL

OVER INPUT

PROTECTION

R239

R241

330k

2.29V

(HIGH POWER)

R143

IC16

BATT

NJM2904V

C336

0.1u

R163

COM0

COM1

COM2

COM3

C332

0.1u

C335

0.1u

470

SEG15

SEG14

D12,13

HSM88AS

C198

R330

470

R153

560k

V+

FINAL

ANTENNA SW

SPEED UP

4.68V

4.69V

C201

C208

SHIFT

VCO SHIFT CONTROL SW

C311

CP31

3.9k

R242

R243

330k

C193

R147

470

1200p

R156

82p

R144

R76 150k (D)

R155

100k

C24

1000p

L53 15n

R19 120k

330k

0.1u

VR5

50k

4.7u6.3

R164

COM2

COM3

VSS

SEG13

SEG12

SEG11

SEG10

SEG9

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

SEG13

SEG12

100k

C202

R31

2.2k

R30

1.2k

GND

Q27

APC

R74

100k

ROTARY

ENCODER

10k(D)

VSS

C108

100p

2SK1830

DIFFERENTIAL

AMP

OUT

RESET

VDD

C37

1000p

C22

18p

MAX DEV

270p

5.0V AVR

VGG

C210

C209

0.01u

SEG11

SEG10

SEG9

W/N

(D)

VOL KNOB

IC2

NJM2904V

C20

INT0

ENCA

GND

4.92V

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

SEG16

SEG17

SEG18

SEG19

SEG20

SEG21

SEG22

SEG23

SEG24

C38

1000p

APC OUTPUT SW

DC SW

WIDE/NARROW

CHANGEOVER SW

T:4.96V

R:0V

2SC5488

R244

TEMP

COMPENSATION

AOUT

V+

BOUT

B-IN

0.01u

R85 560

ENCB

VOLIN

VOLOUT

GND

C235

0.01u

C236

0.01u

REM

A-IN

A+IN

GND

SEG8

SEG7

SEG6

SEG5

SEG4

SEG3

SEG2

SEG1

SEG0

FINAL

C50 22p

D16

RF AMP

5MV

R81

390k

C205

C220

IC11

S-80930CNNBG80

R161

C206

IC10

R75

C112 1000p

4.45V

S-80844CNNBB85

B+IN

0.015u

100k

(D)

4700p

0.047u

R190

47k

R191

47k

PLL LOCK DETECTION

Q14

RN4902

APC CIRCUIT

OPERATION SW

4.4V VOLTAGE DETECTION

3.3V VOLTAGE DETECTION

Q13

2SK1830

R83 56k

R35 120k

APC

R79

C110

C356

1000p

0.01u

APC OUTPUT

VOLTAGE LIMITTER

HPF

CN1

FREQ

D16

R32

150k (D)

IC5

NJM2107F

PLL IC

VR1

500k

VCC

D74,79

R248

3.9k

R246

3.9k

MA2S111

C40

BPF/APC

R37 56k

LIMITER

C358

C219

C505

C221

0.01u

C225

R175

2.2k

R178

0.1u

0.047u

1.58V

4.63V

Q30

KAPC

TEMP

KAPC

TEMP

2SC4617(R)

R36 10

V+

MPU

IC8

VOX

DETECTION AMP

R192

470

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

SEG25

SEG26

SEG27

SEG28

SEG29

SEG30

SEG31

D14

L63

12.8MHz

5C(SAVE)

PTTI

2.68V

REVERSE CURRENT PREVENTION

L64

4.7u

C51

22p

90522BPFFG139

D79

DA221

R318

38.85MHz

1st IF

XF1

D74

DA221

PTTI

GND OUTPUT

MIC

CP2

3.9k

R194

10k

PTTE

TXD

RXD

MUTE

Q29

2SC4919

R182

D18,19

RX BPF TUNING

1st MIXER

L27

680n

R90

330

L71-0619-05

D60

KEY TYPE

DETECTION

D62-65

4.71V

L77-1931-05

PLLEN

DATA

CLOCK

PLLLD

TX-RX UNIT

R195

100

R196

10k

R183

33k

C128

0.01u

PTT

MIC

PTTE

R88

Q16

3SK318

MARKET CODE

DETECTION

(X57-674X-XX)(C/3)

2.42V

4.66V

RXD

D20,21

RX BPF TUNING

D27

D24

C500

1.5p

C501

1.5p

D27

MIC ALC

RECTIFICATION

330

MIC

4.83V

R313

3.3k

C142

1000p

R341

R102

C229

C228

0.1u

SPM

R197

100

5MS

TYPE

0.27V

PTT

S70-0485-05

CN7

CN6

C159

C502

(B)

AFM

0.1u

PTT

R345

D24

D22

VCC

RB706F-40

MA742

MONI

LAMP

1SS361

VOX DETECTION

RECTIFICATION

KIN4

(B)

Q17

2SK1215(E)

KAPC

BPF/APC

MIC MUTE

CONTROL

SPG

MIG

TXD

KYO2

KYO1

D48,49

LCD

ILLUMINATION

LED

MICM

R310

3.9k

REM/TXD

SPK

BPF/APC

RX 1st AMP

C162

RXD

PTTE

R290

R291

AFO

R199

R200

10k

R201

4.7k

HST(VCC)

MD2

VOX

CF1

L72-0968-05

47p

(G)

MIG

EEPCS

EEPDI

EEPCS

EEPDI

EEPCS

TXD

GND

D48

D49

450kHz

SPM

MD1

EEPDI

VOLOUT

T:0V

R:4.63V

B30-2237-05

MD0

DATA

D26

IC6

D69-72

REVERSE

CURRENT

TA7368F

SP MUTE SW

Q56

CN2

3.23V

CLOCK

C246 DISCHARGE

RESET

L49

CPH3417

C246

PTT BOARD

SPK

7.07V

POUT

SET

C359

0.1u

8 OHM

PREVENTION

100u10

SPG

SP MUTE

SPEED UP

PW-GND VCC

PRE-GND

R131 330k

C360

0.1u

4.76V

C173

180p

2nd L.O.

REVERSE CURRENT

PREVENTION

ON:6.90V

D25

C252

100p

R207

R209 R223

100k 220k

R224 C258

18k 0.1u

Q31

2SK1830

DTMF/BEEP

0.53V

13.8V

D32

RB051L-40

PHASE

VIN

MA2S111

R203

SQ FILTER

L50

C187

C166

0.01u

R132

C174

180p

RIPPLE

C253 R206

Q51

RN4902

DC IN

2.2k

C352

470k

C270

1000p

Q23

INT0

PWR SW

RESET

INT0

PWR SW

RESET

10u10

AF AMP

KTC4082

1000p

D80

RB521S-30

LCD LED SW

X57-674X-XX

0-11 TH-K2AT

2-71 TH-K2E

2-72 TH-K2ET

0-21 TH-K2AT

D44

D47

D60

D62

D63

Q59

C320

8200p

C321

C350

0.1u

C510

C511

C512 C514

C515

C516 C517

TRIPLER

C338

D80

K,K2

B30-2205-05

MA2S111

2SK1830

8200p

470p

C293

47p

Q31

DTMF/BEEP/1750/W-ALT

FM IC

REVERSE CURRENT

PREVENTION

TX-RX UNIT

(X57-674X-XX)(B/3)

Q56 OPERATION SW

100p

470p

IC3

TA31136FN

ON:4.76V

C506

R116

120k

REVERSE CURRENT

PREVENTION

B30-2205-05

5C/5R/5T AVR

4.82V

CN9

1000p

2.5A

D33

AF FILTER

C190

R124

3.3k

M,M2

MA2S111

13.58V

7.07V

Q37

2SB1184(Q,R)

C169

C170

R119

1.8k

R123

1.8k

R122

2.7k

R332

R210

Q21

R235

D30

RB521S-30

RB051L-40

R134

390k

0.01u

2SC4617(R)

KOUT3

KOUT2

KOUT1

KOUT0

VUKEY

TYPE

KIN4

KOUT3

KOUT2

KOUT1

KOUT0

VUKEY

TYPE

KIN4

MIC1

R128

C180

120p

0.068u

R117

0.068u

C353

1000p

0.72V

C167

Q37

0.5A

IF AMP

X57-674X-XX

0-11 TH-K2AT

2-71 TH-K2E

2-72 TH-K2ET

0-21 TH-K2AT

R230

220

R257

R258

R259

R261

47k

R264

R344

CN17

13.43V

11.45V

CN8

Q33

3.3k

Q52

RN1107

C191

R211

470k

AF AMP/

LAMP AVR

Q24

2SC5488

0.1u

2SB1184(Q,R)

K,K2

56k

680

680k

100k

BATTERY

TERMINAL

2.7k

(D)

0.01u

BEAT SHIFT SW

CHARGE SW

C284

1000p

Q20

2SK1830

E23-1081-05

D33,35,36

Q38

2SC4617(R)

KIN3

R285

REVERSE

CURRENT

PREVENTION

KIN2

220

C285

1000p

AVR

CONSTANT-

VOLTAGE

Q35

4.80V

KIN1

Q22

RN2105

2SK1830

CD1

450kHz

D31

DA221

KIN0

M,M2

RXD

PTTE

RXD

PTTE

AF MUTE SW

Q36

2SJ347

1/F

2/VFO

3/MR

F/CALL

R120

2.7k

MIG

DC IN

DETECTION

D35

CONSTANT-

CURRENT

CIRCUIT

MIG

4.31V

TXD

WIDE/NARROW

CHANGEOVER SW

RB521S-30

VFO

D42-44,46,47

SPM

C282

1000p

11.5V AVR

Q38

5C/5R/5T AVR

Q36

KEY

W:111mV

N:4.79V

Q37 OPERATION SW

D36

ILLUMINATION

LED

Note :The components marked with a

NI-MH

AFAMP

BTDET

DCDET

BTEMP

CHARGE

AFAMP

BTDET

DCDET

BTEMP

CHARGE

Q50

TEMPERATURE

DETECTION

Q34

2SK1830

RB521S-30

1000p

dot ( ●) are parts of layer1.

C281

CALL

KEY LED SW

ON:4.78V

Q33 OPERATION SW

BTEMP

CHARGE

BPF/APC

10KEY BOARD

Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).

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TH-K2AT/K2E/K2ET

LEVEL DIAGRAM

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TH-K2AT/K2E/K2ET

BLOCK DIAGRAM

VR6

TONE

DTMF/BEEP

VR5

1SV305

IC5

NJM2107F

IC16

NJM2904V

MOD

LIMITTER AMP

HPF

SPLATTER

FILTER

2SC5066

(O)

OSC

Q27

D1, D2

1SV325

5MV

2SC5488

Q30

2SC4617(R)

Q29,D22,D27

2SC4919

2SK1830

D74,D75

DA221

1SS361

VOX AMP

RF AMP

WIDE/NARR

RB706F-40

LIMITTER

MIC AGC

2SK1830

D24

MA742

PTTE/RXD

5MV

NAR

MICM

SHIFT SW

VOX DET

LOOP

FILTER

LPF

SHIFT

D42,43,46

IC1

LMX2316TMX

D44,47

2nd Local

B30-2205-05

KEY ILLMI

PLL IC

TCXO

Q23

KTC4082

5MS

12.8MHz

KIN0~3

KYO0~3

TRIPLER

Q50

2SK1830

VR1

KEY ILLMI

PLLEN

PLLLD

CLOCK

DATA

VR6

X57-674 B/3

VOXIN

TONE

NAR

SIGIN

VSS,DVSS,

AVSS,AVRL

Q52

RN1107

PTT

PTTI

KIN4

BSFT

BEAT SHIFT

D48,49

Q51

RN4902

IC8

MPU

B30-2205-05

LAMP

LCD ILLMI

LAMP

MONI

KYO1

KYO2

SEG0~31

COM0~3

X57-674 C/3

NOAA

BTEMP

DCDET

CLOCK

DATA

EEPCS

EEPDI

VCC,DVCC

INTUP

INTDW

AVCC,AVRH

LCD

RESET HST(VCC),V3

D/A

H/L

DTMF/BEEP,TONE

D40,41

IC15

IC10

IC11

S-80930

CNNBG80

RESET

AFM,SPM,MICM,

B30-2156-05

KAPC,FINAL,CHARGE,

AFAMP,RXLED,BTDET,TXD

5MS,5R,5T,5C(SAVE),VOX,

KYO0~3,VUKEY

AT25160N

S-80844

B30-2157-05

10SI27

EEPROM

CNNBB85

INT

PWM

BPF/APC

TX/RX LED

A/D

REM,SQ,SM,BATT

H/L

RXD,PTTE,PTTI,

Q47

RN1701

ENCA,ENCB,

PWRSW,KIN0~4,TYPE

TX/BUSY

LED SW

RXLED

X57-674 A/3

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TH-K2AT/K2E/K2ET

BLOCK DIAGRAM

LPF

2SC5488

Q10

2SC4926YD

2SC5488

D8, D9

HSC277

2SC5488

Q11

2SK2596

Q12

2SK3476

D10

XB15A709

ANT

PRE-DRIVE

AMP

RF AMP

TX/RX SW

DRIVE AMP

FINAL AMP

ANT SW

RF AMP

D12,D13

HVC131

Q14

RN4902

Q4,D7

Q15

2SC4617(R)

Q58

2SK1830

TH1

B57331V

2103J

ANT SW

APC SW

APC KILL SW

LIPPLE

FILTER

BIAS SW

TEMP DET

FINAL

D17

HSM88AS

Q13

2SK1830

IC2

NJM2904V

CF1 450kHz

D14

MA2S111

ANT SW

APC AMP

APC V

BPF/APC

Q16

3SK318

XF1

MCF

IC3

TA31136FN

Q17

2SK1215

38.4MHz

D18,D19

1SV305

D20,D21

1SV305

Q24

2SC5488

FM IC

BPF

RF AMP

BPF

IF AMP

38.85MHz

BPF/APC

SQ,SM

Q22

RN2105

Q21

2SC4617

Q20

2SK1830

Q56

CPH3417

D26

1SS388

SP MUTE SW

CD1

LPF

IC6

TA7368F

(R)

AF FILTER

DE-EMPH

AF AMP

AF MUTE SW

WIDE/NARR

REM

/TXD

DTMF/BEEP

AF AVR

SPM

IC17

NJM2902V

Q31

CN2

AFM

CT/DCS/WXA

FILTER

2SK1830

D25

MA2S111

Q59

2SK1824

MUTE SW

WXA SW

Q36

2SJ347

(Ktype only)

THERM DET

Q41

RN2105

VR1

ENC

BTDET

5MS 5MS SW

BATT TERMINAL

7.5V Norminal

(6.0 - 9.0V)

D35

RB521S-30

PROTECT

Q57

RN2105

IC9

TK11250

AVR

5.0V

D33

RB051L-40

Q35

2SK1830

Q33

2SB1184

(Q,R)

BATT

CHARGE

D30

RB521S-30

IC1

TCXO

Q4,5,6

D40,41

5C SW

DC-IN DET

PROTECT

IC5

Q30

Q53

5MV RN2701

IC12

TK11250

CUCB

Q37, Q38

2SB1184(Q,R)

2SC4617(R)

Q34

2SK1830

D32

RB051L-40

IC6

D48,49

CHARGE

IC3,17

D9,14

Q16,17

Q22,23,24

Q59

5R SW

5MV SW

D42,43,46

D47,44

AF/LAMP

AVR

5.0V

CHARGE SW

PROTECT

AF AMP

DC IN

13.8V Norminal

(12.0 - 16.0V)

Q55

IC4

D36

RB521S-30

D80

RB521S-30

Q9,10,13

D8,10

TH1

CPH3317

XC6202PB

52FR

AVR

5T SW

IC16

PROTECT

Q47

11.5V

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TH-K2AT/K2E/K2ET

BC-21 (WALL CHARGER) / PB-43N (Ni-MH BATTERY PACK)

BC-21 External View

PB-43N External View

Photo is K type.

BC-21 Specifications

Rated output voltage ......... DC 13.8V ±5%

Rated output current ......... 150mA

PB-43N Schem atic diagram

Charging time .................... Approx. 12 hours (PB-43N)

Discharge term inal side

Therm ister

(DTN-103F3H-SYS)

Breaker

(BBS70 A1N-01 70˚C)

Breaker

(BBS80A2Y-01 80˚C)

(4N)

(2N)

Diode

(ERB83-004)

Therm ister

(DTN-103F3H-SYS)

Rear charge term inal side

PB-43N Specifications

Voltage .......................................... 7.2V (1.2V x 6)

Charging current ............................ 1100mAh

Dimensions (Projections included) ... 58W x 100.8H x 16.8D (mm)

Charger and charging time

KSC-24 (Rapid charger) ............. Approx. 60 minutes

Weight ........................................... 210g

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TH-K2AT/K2E/K2ET

BT-14 (BATTERY CASE) / PG-4Y (PROGRAMMING INTERFACE CABLE) /

MCP-1A (MEMORY CONTROL PROGRAM)

BT-14 (6 AA/ LR6)

External View

PG-4Y

External View

MCP-1A

• Available free for downloading from the Kenwood website:

http://www.kenwood.com /i/products/i n fo/amateur.html

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TH-K2AT/K2E/K2ET

SPECIFICATIONS

General

TH-K2AT

TH-K2E

TH-K2ET

Market code

K, K2

M, M2

100 (50) + 9 special

function memories

Number of memory channels

100 (50) + 8 special function memories

Antenna impedance (Connector type)

50 Ω (SMA)

DC IN Jack

Operating Voltage

DC 12.0 ~ 16.0 V (13.8 V nominal)

DC 6.0 ~ 9.0 V (7.2 V nominal)

Negative ground

Battery terminal

Grounding method

Transmit with H, 13.8 V (DC IN) 1.8 A or less

Transmit with H, 7.2 V (PB-43N) 2.0 A or less

Transmit with M, 7.2 V (PB-43N) 1.5 A or less

Transmit with L, 7.2 V (PB-43N) 0.8 A or less

Current

Receive (no signal)

100 mA or less

30 mA or less

Battery Saver ON (Average)

–20° C ~ 60° C (–4° F ~ 140° F)

–10° C ~ 60° C (+14° F ~ 140° F) with PB-43N

Usable temperature range

Frequency stability

Within ±5 ppm (–20° C ~ 60° C)

58 x 110 x 28.4 mm / 2 7/16" x 4 6/16" x 1 2/16" with PB-43N

58 x 110 x 29.6 mm / 2 7/16" x 4 6/16" x 1 5/32" with BT-14

Dimensions (W x H x D Projections not included)

Approx. 320 g / 11.3 oz with PB-43N

Approx. 320 g / 11.3 oz with BT-14

weight

Transm itter

Transmission Mode

F3E (FM) / F2D (FM)

Frequency range

144 ~ 148 MHz

136 ~ 174 MHz

144 ~ 146 MHz

DC-IN jack (13.8 V)

H: 5.0 W (approx.) M: 1.5 W (approx.) L: 0.5 W (approx.)

H: 3.5 W (approx.) M: 1.2 W (approx.) L: 0.3 W (approx.)

Reactance

Output Power

Modulation

PB-43N (7.2 V)

BT-14 (9.0 V)

Maximum frequency deviation

Squrious emissions

±5 kHz (FM) / ±2.5 kHz (NFM)

–60 dB or less (H and M power), –50 dB or less (L power)

2 kΩ

Microphone impedance

Receiver

Reception Mode

F3E (FM) / F2D (FM)

Frequency range

136 ~ 174 MHz

144 ~ 146 MHz

1st IF : 38.85 MHz

2nd IF : 450kHz

Intermediate Frequency (IF)

Circuit type

Double super - heterodyne

FM (12 dB SINAD)

2m amateur radio band: 0.18 µV or less

Sensitivity

Squelch Sensitivity

Selectivity

0.13 µV or less (within 2m amateur radio band)

–6 dB / 10 kHz or less

–40 dB / 28 kHz or less (within 2m amateur radio band)

Audio output (10% distortion)

400 mW or higher (7.2 V, 8 Ω load)

Note: All specifications (General, Transmitter and Receiver) are guaranteed within the amateur radio band.

KENWOOD CORPORATION

2967-3, Ishikawa-machi, Hachioji-shi, Tokyo 192-8525, Japan

KENWOOD U.S.A. CORPORATION

KENWOOD ELECTRONICS ITALIA S.p.A.

P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745,

U.S.A.

Via G. Sirtori, 7/9 20129 Milano, Italy

KENWOOD IBERICA S.A.

Bolivia, 239-08020 Barcelona, Spain

KENWOOD ELECTRONICS CANADA INC.

6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8

KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.

KENWOOD ELECTRONICS DEUTSCHLAND GMBH

Rembrücker Str. 15, 63150 Heusenstamm, Germany

(A.C.N. 001 499 074)

16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia

KENWOOD ELECTRONICS BELGIUM N.V.

KENWOOD ELECTRONICS (HONG KONG) LTD.

Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium

Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road,

Kwai Fong, N.T., Hong Kong

KENWOOD ELECTRONICS FRANCE S.A.

13, Boulevard Ney, 75018 Paris, France

KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.

Sales Marketing Division

1 Ang Mo Kio Street 63, Singapore 569110

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

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