Kenwood_th-k2_serv.pdf

144MHz FM TRANSCEIVER

TH-K2AT/K2E/K2ET SERVICE MANUAL © 2003-8 PRINTED IN JAPAN B51-8658-00 (S) 836

Helical Antenna (T90-1018-25)

Helical Antenna (T90-1018-25)

Knob (ENC) (K29-5159-03)

Knob (ENC) (K29-5159-03)

Knob (VOL) (K29-5150-03) Front glass (B10-2746-03)

Knob (PTT/LAMP/MON) (K29-9274-03)

Cap (SP/MIC/DC IN) (B09-0675-03) Cabinet assy (16key) (A02-3819-23)

Knob (VOL) (K29-5150-03) Front glass (B10-2746-03)

Knob (PTT/LAMP/MON) (K29-9274-03)

Cap (SP/MIC/DC IN) (B09-0675-03) 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 ADJUSTMENT ........................................................ 27 TERMINAL FUNCTION ........................................... 43 PC BOARD TX-RX UNIT (X57-674X-XX) (A/3) ................... 44 TX-RX UNIT (X57-674X-XX) (B/3),(C/3) .......... 48

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

TH-K2AT/K2E/K2ET DISASSEMBLY FOR REPAIR How to remove the case assembly from the chassis

c

Remove two screws (z) holding the chassis. Pull out two knobs (x) and remove two round nuts (c). Pull out the SP and MIC parts of the cap from jacks (v). Turn the unit over with the bottom of the chassis facing upwards, and remove the chassis ( n ) from the case assembly (b). 5. Remove the speaker lead (m) from the connector (CN2) of the TX-RX PC board (TX-RX unit A/3).

1. 2. 3. 4.

x c

v m

b

How to remove the PC board ■ Numeric key PC board (TX-RX unit B/3) 1. Remove three screws (,) on the numeric key PC board. 2. Lift the numeric key PC board and remove it from the connector (CN9) of the TX-RX PC board (.).

, ,

TX-RX unit (B/3)

■ PTT PC board (TX-RX unit C/3) 3. Remove one screw on the PTT PC board (/). 4. Pull the PTT PC board to the left and remove it from the connector (CN6) of the TX-RX PC board (TX-RX unit A/3) (Ω).

. ç

■ TX-RX PC board (TX-RX unit A/3) 5. Remove the SP/MIC jack cover (≈). 6. Remove two screws ( ç ) holding the shield cover (antenna terminal section). 7. Remove two screws ( √ ) holding the shield cover (final amplifier section). 8. Remove eight screws (∫ ) on the TX-RX PC board. 9. Absorb solder from the antenna terminal (~) with a solder absorber. Note: Do not melt the shadow plate (µ) when moving the tip of the solder absorber close to the antenna terminal.

√ TX-RX unit (C/3)

/ Ω

∫ ∫ ∫

µ

∫

∫

CN6 CN2

≈ ∫ TX-RX unit (A/3) CN9

10. Remove the TX-RX PC board from the chassis, then remove the encoder volume FPC (≤) from the flat cable connector of the TX-RX PC board.

~ ≤

n z

2

x

TH-K2AT/K2E/K2ET DISASSEMBLY FOR REPAIR Soldering the antenna terminal 1. With the shield cover removed from the antenna terminal section, install two screws on the PC board and bring the PC board into contact with the chassis (z). 2. Solder the antenna terminal with a soldering iron (x).

4. Apply the tips of soldering irons to all the four pins of the final FET at the same time (c), heat them sufficiently, and remove the final FET (v). (Two persons should be required to do this.)

v

x

c

z

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 (b). 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 (c).

b

Radiation plate

c 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 (n). 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 (m).

Replacing the final FET (Q12) 1. Remove the two screws holding the shield cover of the final FET section (z). 2. Remove solder from the shield cover completely with a solder absorber. (E and E3 types only) 3. Remove the shield cover (x).

m n

z x

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.

3

TH-K2AT/K2E/K2ET DISASSEMBLY FOR REPAIR Special care and attention required for assembly 1. Gluing to the key top (MIC element 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)

(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.

Heap the glue up until wealthy glued on the speaker storage area and the key top (MIC element section).

Min 45 degrees Bending position

NG NG

Fig. 1 2. Bending the LCD hardware fixture (J21-8456-03) tabs

Fig. 3

(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

Fig. 2

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 OK A bit clearance CN7 PTT switch Push three parts of the PTT PCB to contact tightly with the chassis.

Chassis

PTT PCB (C/3) CN6

NG

No clearance PTT switch

CN7

Fig. 4 (3) Tighten one screw in the PTT PCB. 4

TH-K2AT/K2E/K2ET DISASSEMBLY FOR REPAIR 4. Packing (G53-1572-02) TX/BUSY lamp installation procedure (1) To assure waterproofing, install the packing in the chassis groove as shown in Fig. 5. (z) (2) Install the packing TX/BUSY lamp section on the chassis. (x )

z

6. Cautions for installing the chassis on the case assembly (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)

OK Packing

PT

T

LOW

LAM

P

Chassis NG

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.

x

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. OK

Do not fix this part of the key top to the rib of the case assembly.

NG

Fig. 8 7. Cautions for installing the key top on the case assembly Push three parts of the packing to contact tightly with the chassis.

Fig. 6

Clearance NG

(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.

5

TH-K2AT/K2E/K2ET CIRCUIT DESCRIPTION Frequency Configuration The frequency 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) 136.000~173.995MHz(M,M2) ANT 144.000~145.995MHz(E,E3)

1st MIX ANT SW

■ First Mixer 450kHz CF SP

MCF

RF AMP

MIX, IF, DET 38.85MHz

AF AMP

38.4MHz

FINAL 174.850~212.845MHz (K,K2,M,M2) 182.850~184.845MHz (E,E3)

DRIVE

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.

PRE DRIVE 144.000~147.995MHz(K,K2)

Tripler x3

TCXO 12.8MHz MIC

PLL VCO

MIC AMP

136.000~173.995MHz(M,M2) 144.000~145.995MHz(E,E3)

Fig. 1 Frequency configuration Double super heterodyne Reception method 1st IF Frequency 38.85MHz (Upper) 2nd IF Frequency 450kHz (Lower) Transmission method VCO direct oscillation amplification Modulation Variable reactance phase modulation

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). Item Nominal center frequency (fo) Pass bandwidth Attenuation bandwidth Ultimate attenuation Spurious response Ripple Insertion loss Terminating impedance

Rating 38.85MHz ±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 4dB or less 610Ω ±5% // 3pF ±0.5pF

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

Table 1 Basic configuration

Receiver System ■ Front End The received signal from the antenna passes through a lowpass filter and then through a transmission/reception switching circuit (antenna switch) and enters the band-pass filter (L40, L41, L38). 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).

Item Nominal center frequency (fo) 3dB bandwidth 50dB bandwidth Ripple Guaranteed attenuation Insertion loss I/O matching impedance

Rating 450kHz ±6.5kHz or more ±15.5kHz or less 2dB or less (fo ±6.5kHz) 55dB or more (fo ±18kHz to ±33kHz) 50dB or more (fo ±100kHz) 4dB or less 1.5kΩ

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

ANT BPF RF AMP L41,L40,L38 Q17 LPF

BPF MIXER L32,L35 Q16

MCF XF1

IF AMP Q24

ANT SW

D20

D19

LV

6 BPF/APC Tuning voltage MPU IC8

6

Tripler x3

Q23

TCXO

X1

5R

1st Local OSC (PLL)

VCO

2nd Local OSC

D18

5R

PLL

AF AMP IC6

IF AMP, DET 38.85MHz

D21

FM IC IC3

Fig. 2 Receiver section configuration

12.8MHz

SP

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. 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.

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.

■ 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.

■ Squelch and Mute Circuit A noise component is obtained by passing FM detection output (FM IC pin 9) through an operational amplifier in the

VOL IN AFM IC8 MPU

SM SQ

9 49

SMV

48

SQV

Q20 AF MUTE SWITCH

5R

CD1 AF OUT Q21 AF FILTER

1st IF input (38.85MHz) 16

15

14

13

12

11

10

9 LPF

RSSI

MIX Noise comp IC3 FM IC

Quadrature detector

Rectifier

Noise AMP

Buffer IF AMP

Local OSC 1

2

3

4

5

Inverter AMP

6

7

8 R135

C173

C174 R126

2nd local OSC (38.4MHz) CF1 450kHz

R125 5R

Fig. 3 IF, Squelch, Mute and S meter circuit ■ AF Amplifier The detected audio signal passes through an AF filter (Q21) and enters an AF mute switch (Q20). 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). 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.

IC3 FM IC AF OUT

9

VR201 AF VOLUME

Q21

Q20

AF FILTER

AF MUTE SWITCH

IC6 AF AMP

SPG REM/TXD SPK AFO

SP

40 DTMF/BEEP IC8 MPU

REM

J4 SP JACK

46

Fig. 4 AF amplifier 7

TH-K2AT/K2E/K2ET CIRCUIT DESCRIPTION Transmitter System

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.

■ Microphone Amplifier 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.

MIC

IC16

Q1

HPF

MIC AMP

VCO

IC5 HPF

Q9 RF AMP

Q5 RF AMP

VR5 MAX DEV

IC16 MIC AMP MIC

Q2 RF AMP

IC5

ANT

Limiter 6

1 Preemphasis

Q11 DRIVE AMP

VCO

D10,L19 D12,D13

LPF

ANT SW

Splatter filter

Q10 DRIVE AMP

Fig. 5 Microphone amplifier circuit

Q12 POWER AMP

Fig. 6 Modulation, Drive, Final and Transmission/reception switching circuit

■ Modulation Circuit The audio signal amplified by the microphone amplifier (IC16) passes through a semi-fixed volume (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 difference between reference voltage and detection voltage is output from the BOUT terminal (pin 7) of IC2 as an APC voltage.

■ 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).

■ Transmission/Reception Switching Circuit The signal amplified by the power amplifier (Q12) passes through a transmission/reception switching circuit and a lowpass filter, and is fed to the antenna.

ANT LPF D10

Q12

L19

Q11 Q10

D12 VDD

VGG

D13

RX

Q58

Q15 5T

Q55 IC2 APC AMP

2

V+ BOUT

A+IN

B–IN

GND

B+IN

7

Q14 +

A–IN

8 –t

AOUT

TH1

R72

R71

R70

1

3

B

4

6 5

51 THERM 7 6

Q13 B

8

Fig. 7 APC and Temperature protection circuit

KAPC BPF/APC 16 FINAL IC8 MPU

TH-K2AT/K2E/K2ET CIRCUIT DESCRIPTION The APC voltage controls the gate voltage of Q11 and Q12, and keeps transmission output stable. 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.

■ Temperature 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.

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

amplifying VCO output with an RF amplifier (Q6) and dividing it with the PLL IC. 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 lowrange passing characteristics to produce VCO control voltage (lock voltage).

■ 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. VCO Q4

TCXO 5C 5/0V

TO

5C 5/0V X1

VR1

5MS 5/0V

5C 5/0V

PLL

VC

12.8MHz

TCXO 12.8MHz

IC1 PLL IC

CLOCK DATA LE IF

Fo/LD

LPF Rectifier

D1,D2

LV 1~5V

LOOP FILTER

Q6

Ripple Filter

SHIFT H/L

Q3 SHIFT SW

Q1 OSC

Q2 Buff Amp

Q5 RF Amp

D8,D9 TX RX

SW 5T 5/0V 5R 5/0V

MOD

RF Amp

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 detected by the MPU to control transmission/reception switching timing.

5C IC1 PLL IC Fo/LD

R35 D16

14

102

R32 C40

PLL LD IC8 MPU

Fig. 9 Unlock detection circuit

9

TH-K2AT/K2E/K2ET CIRCUIT DESCRIPTION Power Supply Circuit

■ Power Supply Switching Circuit

■ Charging 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.

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 NiMH battery. If no external power supply is connected to the DC IN terminal, the constant-current circuit does not function.

IC8 MPU BTEMP

■ Battery Type Recognition Circuit When the battery pack is attached to the transceiver, the battery type is recognized with the T terminal on the transceiver. This battery type recognition activates charging for the Ni-MH battery pack and displaying the battery meter.

Q36 2SJ347 -

THERM DET

DCDET

T

Q41 RN2105 VR1 ENC

5MS

BTDET

5MS SW

+

D35 RB521S-30

BATT TERMINAL 7.5V Norminal (6.0 - 9.0V)

PROTECT

IC1 TCXO Q4,5,6 D40,41

Q57 RN2105 5M 5C

5C SW

IC9 TK11250 CM AVR 5.0V

Q35 2SK1830 DC-IN DET

Q33 2SB1184 (Q,R) BATT CHARGE

D30 RB521S-30

D33 RB051L-40

PROTECT

PROTECT

D31 DA221 IC5 Q30

Q53 5MV RN2701

IC3,17 D9,14 5R Q16,17 Q22,23,24 Q59

Q9,10,13 D8,10 TH1 IC16 Q47

IC12 TK11250 CUCB

5R SW 5MV SW

D36 RB521S-30

B

CONSTANT CURRENT

D32 RB051L-40

Q34 2SK1830

B

CHARGE SW

CHARGE

PROTECT

AF AMP

DC IN 13.8V Norminal (12.0 - 16.0V)

PROTECT

Q55 CPH3317 5T

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

AVR 5.0V

Q37, Q38 2SB1184 (Q,R) 2SC4617(R) AF/LAMP AVR

IC4 XC6202PB 52FR AVR 11.5V

5T SW

J2

D80 RB521S-30 PROTECT

B

Fig. 10 Charging and Power supply switching 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 detection IC (IC10), the MPU detects it by an interrupt processing, backs up data in EEPROM (IC15) and turns the power off. Timing chart

IC15 EEPROM D35 BATT

IN

Power ON

5C

IC9

L63

5M IC11

C303

IC8 MPU

+

R244 5V OUT AVR

IN

5M

R243

0

OUT RESET C307

RESET

IC10 IN

5V

5V

0 OUT

INT INT

5V

0

10

Fig. 11 Reset and Backup circuit

Power OFF

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. 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. 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.

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.

Q51 D33

Q37

B Q38

D48

D42

D44

D49

D43

D47

D46

AF AMP

■ Battery Save Circuit

Q50 56

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. The 5C ON/OFF cycle ratio during battery saving can be set from a transceiver menu.

D41 BUSY LED

Q47

99

LAMP IC8 MPU RX LED

R227

5C D40

R226 5T

TX LED

Fig. 13 LED drive circuit

5C

5MS

5M

Q41

Q57

37 5MS 5C (SAVE) IC8 MPU

15

Fig. 12 Battery save circuit

11

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

Other keys composes a matrix and key presses are detected by scanning them by software. The encoder reads data using the interrupt port (pins 35 and 36) of the MPU.

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

KIN0

KIN1

KIN2

KIN3

KIN4

IC8 MPU KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI 95

1

2

3

F

MENU

4

5

6

VFO

LAMP

7

8

9

MR

MONI

∗

0

#

CALL

SET

POWER SW

14

PTTE 13

ENCB ENCA 36

35

S7 ROTARY ENCODER J3

4 key (E type) KIN0

KIN1

KIN2

KIN3

KIN4

IC8 MPU KOUT0 KOUT1 KOUT2 KOUT3 PWRSW PTTI 95

F

VFO

MR

CALL

14

PTTE 13

ENCB ENCA 36

35

MENU

LAMP

MONI

SET

POWER SW

S7 ROTARY ENCODER J3

Fig. 14 Key and Encoder input circuit

12

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 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 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 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)

X1 TCXO

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.

VC LPF VR6

Q30 AMP MOD

VR5

VCO

41 TONE

D24 50

1 MIC IC16 AMP

IC6 AF AMP

VOX IN

SIG IN

IC8 MPU

NOAA

CTCSS/DCS FILTER

111

IC3 9 FM IC

K, K2 types only

DTMF/BEEP 40

6

VOL OUT

IC17 47

MIC

IC5 HPF

Vin

Fig. 15 CTCSS/DCS, DTMF, VOX, Weather alert ■ Serial Control

5MC

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 IM

J3 MIC JACK

+ –

MIC

5MS

J4 SP JACK

SPG REM/TXD SPK AFO

13 PTTE 46 REM 10

TXD POUT

IC8 MPU

RXD

12 11

IC6 AF AMP SP

Fig. 16 Serial control 13

TH-K2AT/K2E/K2ET SEMICONDUCTOR DATA MPU : 90522BPFFG139 (IC8) ■ Pin function Pin No. 1 2 3 4 5

Pin Name CLOCK DATA EEPDI EEPCS VOX

6

BPF/APC

O

7 8 9 10 11 12 13 14 15

KAPC VCC AFM SPM RXD TXD PTTE PTTI 5C(SAVE)

O O O I O I I O

16

FINAL

O

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 VSS

34

COR1

O O O O O O O O O O O O O O O O -

35 36 37 38 39

ENCA ENCB 5MS DVCC DVSS DTMF/ BEEP

I I O -

41

TONE

O

42 43 44 45

AVCC AVRH AVRL AVSS

-

46

REM

I

47

SIGIN

I

40

14

I/O

Function

O O I O O

Common serial clock output Common serial data output Data input from EEPROM Chip select output to EEPROM VOX power supply switch L:ON BPF tuning voltage output, APC voltage output (PWM) APC ON/OFF switch L:APC ON Positive power supply AF mute switch L:Mute Speaker mute switch H:Mute UART data input line from PC (9600bps) UART data output line to PC (9600bps) External [PTT] key input L:ON [PTT] key input L:ON Save power supply switch L:ON Gate bias control of TX final amplifier L:Bias ON 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 Power supply stabilization (Connected to VSS through 0.1uF) Encoder A side input Encoder B side input 5MS main power supply switch L:ON Reference voltage input for DAC Ground for DAC Encode waveform output of DTME/BEEP/ 1750Hz (D/A) Encode waveform output of CTCSS/DCS (D/A) Positive power supply for ADC Reference voltage input for ADC Ground reference voltage input for ADC Ground for ADC Remote control microphone key voltage input (A/D) Decode waveform input of CTCSS/DCS (A/D)

O

Pin No. 48 49 50 51 52

Pin Name SQ SM VOXIN THERM BATT

53

BTEMP

I

54

VCC

-

55

CHARGE

O

56

LAMP

O

57

AFAMP

O

58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97

NAR COM0 COM1 COM2 COM3 VSS SEG16 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 NC NC SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 V0 V1 V2 V3 HST(VCC) MD2 MD1 MD0 RESET VSS X0 X1 VCC PWRSW INTUP INTDW

O O O O O O O O O O O O O O O O O O O O O I I I I I I O I I I

I/O

Function

I I I I I

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) Detection of thermistor voltage (temperature) in the Ni-MH battety (A/D) Positive power supply Battery charge circuit power supply switch H:ON Lamp power supply switch H:ON AF amplifier/Lamp AVR power supply switch H:ON Wide/Narrow switching H:Narrow LCD common output 0 LCD common output 1 LCD common output 2 LCD common output 3 GND 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 Not used 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 Not used Not used LCD drive power supply 3 Not used (VCC) L fixed H fixed H fixed Reset input L:Reset GND System clock (7.9872MHz) System clock (7.9872MHz) Positive power supply Power switch interrupt input (↓) Power supply voltage interrupt input (↑) Power supply voltage interrupt input (↓)

TH-K2AT/K2E/K2ET SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION Pin No.

Pin Name

98

DCDET

I

99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

RXLED BSFT PLLEN PLLLD KIN0 KIN1 KIN2 KIN3 KIN4 TYPE VUKEY MICM NOAA 5R SHIFT 5T KOUT0 KOUT1 KOUT2 KOUT3 VSS BTDET

O O O I I I I I I I I O I O O O O O O O O

I/O

Function DC IN detection interrupt input (↓) L:DC IN connected Busy LED output H:ON Beat shift swiching output H:ON Serial enable output to PLL IC Lock detection input from PLL IC H: Lock Key matrix input 0 Key matrix input 1 Key matrix input 2 Key matrix input 3 Key matrix input 4 Market code bit input Detection of 4 key or 16 key Microphone mute switch H:Mute 1050Hz tone detection input RX power supply switch L:ON VCO shift switch L:TX, H:RX TX power supply switch L:ON Key matrix output 0 Key matrix output 1 Key matrix output 2 Key matrix output 3 GND Battery detection switch L:ON

COMPONENTS DESCRIPTION TX-RX UNIT (X57-674X-XX) Ref. No. Use/Function IC1 PLL IC APC differential IC2 amplifier IC3 FM IC IC4 11.5V AVR IC5 HPF IC6 AF amplifier IC8 MPU IC9 5.0V AVR 4.4V voltage IC10 detection 3.3V voltage IC11 detection IC12 5.0V AVR IC15 EEPROM IC16 MIC amplifier CTCSS/DCS/WX IC17 filter Q1 VCO Q2 RF amplifier VCO shift Q3 control switch Q4 Ripple filter Q5,6,9 RF amplifier Q10,11 Drive amplifier Q12 Power amplifier APC circuit Q13 operation switch Q14 Q15 Q16 Q17 Q20 Q21 Q22 Q23 Q24 Q27 Q29 Q30 Q31 Q33

Operation/Condition/Compatibility

Active filter

MPU INT voltage detection MPU Reset voltage detection

Limiter, splatter filter Active filter

On RX

On TX

APC output On TX switch Q10 operation On TX switch 1st mixer RX 1st amplifier Audio mute Audio mute when off switch Audio filter Active filter Wide/narrow On when wide is selected changeover switch Tripler 2nd local IF amplifier 1st IF 38.85MHz Wide/narrow On when wide is selected changeover switch MIC mute Mutes when ON switch VOX detection amplifier Q56 operation Off when the speaker outputs audio switch Charge switch

15

TH-K2AT/K2E/K2ET COMPONENTS DESCRIPTION Ref. No. Use/Function Q33 operation Q34 switch Q35 DC IN detection Ni-MH temperature Q36 detection AF amplifier/ Q37 Lamp AVR Q37 operation Q38 switch Q41 5MS switch TX/BUSY LED Q47 switch Q50 Key LED switch Q51 LCD LED switch Q52 Beat shift switch Q53 Q55 Q56 Q57 Q58 Q59 D1,2 D5 D6 D7 D8 D9 D10-13 D14 D15 D16 D17 D18-21 D22 D24 D25 D26 D27 D30 D31 D32

16

5R/5MV switch 5T switch Speaker mute switch 5C switch Q12 gate voltage switch WX detection amplifier VCO frequency control Frequency shift VCO modulation Speed up RF switch RF switch Antenna switch Reverse current prevention APC output voltage limiter PLL lock detection Over input protection RX BPF tuning MIC mute control VOX detection rectification Speaker mute speed up C246 discharge MIC ALC

Operation/Condition/Compatibility On when charging H: DC IN detection On when temperature detection is activated

On when the speaker outputs audio or lamp lights On when 5MS is applied

On when the key LED lights On when the LCD LED lights On when 5R or 5MV is applied On when 5T is applied

On when 5C is applied Off when High power is selected

Ref. No. Use/Function Reverse current D33 prevention AVR D34 constant-voltage Reverse current D35 prevention Reverse current D36 prevention D40 TX LED D41 BUSY LED D42-44 Key illumination D46,47 LED LCD illumination D48,49 LED D60 D62-65 D69-72 D73 D74,79 D80

Ripple filter On TX On RX On TX APC reference voltage

rectification Reverse current Charge current prevention Constant-current Constant-current charge circuit Reverse current DC IN prevention

Operation/Condition/Compatibility Battery

Battery DC IN Lights on TX Lights on RX Key backlight illumination LCD backlight illumination

Key type detection market code detection Reverse current Key matrix prevention Voltage drop Limiter Reverse current prevention

TH-K2AT/K2E/K2ET PARTS LIST indicates safety critical components. ∗ 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.

L: Scandinavia Y: PX (Far East, Hawaii) Y: AAFES (Europe)

K: USA T: England X: Australia

P: Canada E: Europe M: Other Areas

TH-K2AT/K2E/K2ET (Y50-580X-XX) TX-RX UNIT (X57-674X-XX) New

Ref. No. Address parts

Parts No.

Description

Destination

TH-K2AT/K2E/K2ET 1 2 3 3 4

3A,2G 1C 1A 1A 3A,3C

* * * * *

A02-3817-02 A02-3818-23 A02-3819-23 A02-3819-23 A10-4066-11

CABINET ASSY(BATTERY CASE) CABINET ASSY(4KEY) CABINET ASSY(16KEY) CABINET ASSY(16KEY) CHASSIS

5

3B,3D

*

A82-0053-02

REAR PANEL

6 7 8 9 10

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) LCD

11 11 11 11 11

1G 1E,1G 1E,1G 1E 1E

* * * * *

B62-1695-00 B62-1696-00 B62-1697-00 B62-1697-00 B62-1699-00

INSTRUCTION MANUAL(CHINESE) INSTRUCTION MANUAL(ENGLISH) INSTRUCTION MANUAL(SPANISH) INSTRUCTION MANUAL(SPANISH) INSTRUCTION MANUAL(GERMAN)

K,K2,E E3 E,E3

11 11 11 12 12

1E 1E 1E 3A 3A

* * * * *

B62-1702-00 B62-1757-00 B62-1758-00 B72-2128-04 B72-2128-04

INSTRUCTION MANUAL(ITALIAN) INSTRUCTION MANUAL(FRENCH) INSTRUCTION MANUAL(DUTCH) MODEL NAME PLATE(TH-K2AT) MODEL NAME PLATE(TH-K2AT)

E,E3 E,E3 E,E3 K,K2,M M2

12 12

3C 3A

* *

B72-2129-04 B72-2193-04

MODEL NAME PLATE(TH-K2E) MODEL NAME PLATE(TH-K2ET)

E E3

13 14 15 16

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) LEAD WIRE WITH CONNECTOR(SP)

17 18 19

2A,2C 2A,2C 2B,2D

* * *

F10-2464-04 F10-2465-04 F15-1008-04

SHIELDING COVER(FINAL FET) SHIELDING COVER(ANT TERMINAL) SHADOW PLATE(LCD)

21 22 23

* 3B,3D 2A,2C 2B,2D

* *

G10-1317-04 G53-1529-04 G53-1572-02 G53-1589-03

FIBROUS SHEET(SP NET) PACKING(VOL/ENC) PACKING(CASE) PACKING(SP/MIC)

24 24 24 25 26

3E 3E 3E 2H 2F

* * * * *

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 E E3 K2,M2 K,M,E

26 27

2F 3G

* *

H12-3146-01 H12-3147-03

PACKING FIXTURE PACKING FIXTURE

E3 K2,M2

28 29 30 31 32

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) BELT HOOK ASSY ACCESSORY SPACER(PTT KNOB) HANDSTRAP ACCESSORY

M,M2,E

32 33 45 34 35

3E 2B,2D 3A,3C 1B,1D 1B,1D

J69-0342-05 J82-0076-05 J99-0376-04 K29-5150-03 K29-5159-03

HANDSTRAP FPC(VOL/ENC) ADHESIVE TAPE KNOB(VOL) KNOB(ENC)

E : TH-K2E E3 : TH-K2ET

K : TH-K2AT K2 : TH-K2AT

M : TH-K2AT M2 : TH-K2AT

ACCESSORY

K2,M2 E K,K2,M M2,E3

M2

E3

New

Ref. No. Address parts 36 36 37 38

1A 1A 1A,1C 1C

A B C D E

* * * *

Parts No.

Description

K29-9272-02 K29-9272-02 K29-9274-03 K29-9276-02

KEY TOP(16KEY) KEY TOP(16KEY) KNOB(PTT/LAMP/MONI) KEY TOP(4KEY)

2B,2D 1B,1D 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)

F G

3A,3C 2A,2C

N82-2007-46 N09-2433-05

PAN HEAD TAPTITE SCREW(CASE) PAN HEAD TAPTITE SCREW(FINAL FET)

39

2B,2D

R39-0602-05

VARIABLE RESISTOR

40 41

1A,1C 2F,3G

*

T07-0341-15 T90-1018-25

SPEAKER HELICAL ANTENNA

42 43 44 44

2F 2E 2E 2E

* * * *

W08-0959-15 W08-0960-15 W09-0991-05 W09-0991-05

CHARGER(230V/13.8V) ACCESSORY CHARGER(120V/13.8V) ACCESSORY BATTERY ASSY(7.2V/1100MAH) ACCESSORY BATTERY ASSY(7.2V/1100MAH) ACCESSORY

Destination K,K2,M M2,E3 E

ACCESSORY M,E,E3 K K,M,E E3

TX-RX UNIT (X54-674X-XX) 0-11 : K, K2 0-21 : M, M2 2-71 : E 2-72 : E3 D40 D41 D42-44 D42-44 D42-44

B30-2156-05 B30-2157-05 B30-2205-05 B30-2205-05 B30-2205-05

LED(RED) LED(YELLOW) LED(YG) LED(YG) LED(YG)

E3 K,K2,M M2

D42,43 D46 D46,47 D46,47 D46,47

B30-2205-05 B30-2205-05 B30-2205-05 B30-2205-05 B30-2205-05

LED(YG) LED(YG) LED(YG) LED(YG) LED(YG)

E E E3 K,K2,M M2

D48,49

B30-2237-05

LED(YG)

C1 C2 C3 C4 C5

CK73HB1C103K CK73HB1H102K CC73GCH1H030B CK73HB1H102K CK73HB1A104K

CHIP C CHIP C CHIP C CHIP C CHIP C

0.010UF 1000PF 3.0PF 1000PF 0.10UF

K K B K K

C6 C7 C8,9 C10 C11

CK73HB1H102K CC73HCH1H0R5B CC73GCH1H270G CK73HB1C103K CK73HB1H102K

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 0.5PF 27PF 0.010UF 1000PF

K B G K K

C13 C14 C15 C17,18 C19

CC73GCH1H0R5B CK73HB1H102K CC73HCH1H120J CK73HB1H102K CC73HCH1H150J

CHIP C CHIP C CHIP C CHIP C CHIP C

0.5PF 1000PF 12PF 1000PF 15PF

B K J K J

C20 C21 C22 C24-26 C27

CC73HCH1H080D CK73HB1H102K CC73HCH1H180J CK73HB1H102K C92-0628-05

CHIP C CHIP C CHIP C CHIP C CHIP-TAN

8.0PF 1000PF 18PF 1000PF 10UF

D K J K 10WV

C30

CK73HB1H102K

CHIP C

1000PF K

17

TH-K2AT/K2E/K2ET PARTS LIST TX-RX UNIT (X57-674X-XX) New

Parts No.

Ref. No. Address parts

Description

Destination

New

Ref. No. Address parts

Parts No.

Description

C33 C34 C35 C37 C38

C92-0002-05 C92-0714-05 C92-0001-05 CK73HB1H102K CK73HB1C103K

CHIP-TAN TANTALUM CHIP-C CHIP C CHIP C

0.22UF 4.7UF 0.1UF 1000PF 0.010UF

35WV 6.3WV 35WV K K

C136 C137 C138 C141,142 C145

CC73HCH1H100D CC73HCH1H050C CK73HB1H102K CK73HB1H102K CC73HCH1H220G

CHIP C CHIP C CHIP C CHIP C CHIP C

10PF 5.0PF 1000PF 1000PF 22PF

D C K K G

C40 C41 C42 C43 C44-46

CK73HB1A104K C92-0507-05 CK73HB1H102K CK73HB1C103K CC73HCH1H101J

CHIP C CHIP-TAN CHIP C CHIP C CHIP C

0.10UF 4.7UF 1000PF 0.010UF 100PF

K 6.3WV K K J

C147 C148 C152,153 C158 C159

CK73HB1H102K CC73HCH1H220G CK73HB1H102K CC73HCH1H220G CC73HCH1H020B

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 22PF 1000PF 22PF 2.0PF

K G K G B

C50 C51 C52 C54 C55

CC73HCH1H220J CC73GCH1H220J CC73HCH1H100D CK73HB1H102K CK73HB1C103K

CHIP C CHIP C CHIP C CHIP C CHIP C

22PF 22PF 10PF 1000PF 0.010UF

J J D K K

C160 C161 C162 C163 C166

CC73HCH1H270G CK73HB1H102K CC73HCH1H470G CK73HB1H102K CK73HB1C103K

CHIP C CHIP C CHIP C CHIP C CHIP C

27PF 1000PF 47PF 1000PF 0.010UF

G K G K K

C56 C57 C61 C64 C65

CK73HB1H102K CC73HCH1H100D CK73HB1H102K CK73HB1H102K CC73HCH1H180J

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 10PF 1000PF 1000PF 18PF

K D K K J

C167,168 C169,170 C171 C172 C173,174

CK73HB1A104K CK73HB1A683K CK73HB1H102K CK73HB1H182K CC73HCH1H181J

CHIP C CHIP C CHIP C CHIP C CHIP C

0.10UF 0.068UF 1000PF 1800PF 180PF

K K K K J

C66 C67 C68 C69 C70

CK73GB0J105K CK73HB1H102K CC73HCH1H180J CC73HCH1H040C CK73GB0J105K

CHIP C CHIP C CHIP C CHIP C CHIP C

1.0UF 1000PF 18PF 4.0PF 1.0UF

K K J C K

C175 C176 C177 C178 C179

CC73HCH1H220J CK73HB1A104K C92-0712-05 CK73HB1C103K CK73HB1A104K

CHIP C CHIP C CHIP-TAN CHIP C CHIP C

22PF 0.10UF 22UF 0.010UF 0.10UF

J K 6.3WV K K

C71 C72 C73 C74 C75

CK73HB1H102K CK73GB1C104K CK73HB1H102K CC73HCH1H330J CK73HB1H102K

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 0.10UF 1000PF 33PF 1000PF

K K K J K

C180 C182,183 C186 C187 C188

CC73HCH1H121J CK73HB1A104K CC73HCH1H240J CC73HCH1H020C CC73HCH1H240J

CHIP C CHIP C CHIP C CHIP C CHIP C

120PF 0.10UF 24PF 2.0PF 24PF

J K J C J

C76 C78 C82 C83 C84

CC73GCH1H390J CK73HB1H102K CK73HB1H102K CK73HB1C103K CK73HB1A104K

CHIP C CHIP C CHIP C CHIP C CHIP C

39PF 1000PF 1000PF 0.010UF 0.10UF

J K K K K

C189 C190-192 C193 C194 C195

CK73HB1H102K CK73HB1C103K C92-0507-05 CK73HB1A104K C92-0628-05

CHIP C CHIP C CHIP-TAN CHIP C CHIP-TAN

1000PF 0.010UF 4.7UF 0.10UF 10UF

K K 6.3WV K 10WV

C93-0766-05 CC73GCH1H560J CK73GB1H102K CK73HB1H102K CC73HCH1H080D

CERAMIC C CHIP C CHIP C CHIP C CHIP C

56PF 56PF 1000PF 1000PF 8.0PF

J J K K D

C196,197 C198 C201 C202 C203

CK73HB1C682K CK73EF1C105Z CK73HB1H122K CK73HB1H271K CC73HCH1H121J

CHIP C CHIP C CHIP C CHIP C CHIP C

6800PF 1.0UF 1200PF 270PF 120PF

K Z K K J

C94 C95-97 C98 C99 C100

CK73GB1H102K CC73GCH1H120G CC73GCH1H080B CC73GCH1H130G CC73GCH1H070B

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 12PF 8.0PF 13PF 7.0PF

K G B G B

C204 C205 C206 C207 C208

CK73HB1A333K CK73HB1A473K CK73HB1C153K CK73HB1C103K CC73HCH1H820J

CHIP C CHIP C CHIP C CHIP C CHIP C

0.033UF 0.047UF 0.015UF 0.010UF 82PF

K K K K J

C101 C105-107 C108 C109-115 C116

CC73GCH1H240G CK73HB1H102K CC73HCH1H101J CK73HB1H102K C92-0544-05

CHIP C CHIP C CHIP C CHIP C CHIP-TAN

24PF 1000PF 100PF 1000PF 10UF

G K J K 4WV

C209 C210 C211 C212 C213

CK73HB1H102K CK73HB1C103K CK73HB1H222K CK73HB1C123K C92-0507-05

CHIP C CHIP C CHIP C CHIP C CHIP-TAN

1000PF 0.010UF 2200PF 0.012UF 4.7UF

K K K K 6.3WV

C117,118 C124 C125 C126 C128

CK73HB1H102K CK73HF1C104Z CC73HCH1H1R5C CC73HCH1H100D CK73HB1C103K

CHIP C CERAMIC C CHIP C CHIP C CHIP C

1000PF 0.1UF 1.5PF 10PF 0.010UF

K Z C D K

C218 C219 C220 C221,222 C223

CK73HB1H102K CK73HB1A473K CK73HB1E472K CK73HB1C103K CK73HB1H102K

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 0.047UF 4700PF 0.010UF 1000PF

K K K K K

C129 C130 C131-133 C134 C135

CC73HCH1H110J CK73HB1H102K CK73HB1C103K CK73HB1H102K CC73HCH1H120J

CHIP C CHIP C CHIP C CHIP C CHIP C

11PF 1000PF 0.010UF 1000PF 12PF

J K K K J

C224 C225 C226 C227 C228,229

CK73HB1A104K CK73GB0J105K CK73HB1A104K C92-0587-05 CK73HB1A104K

CHIP C CHIP C CHIP C CHIP-TAN CHIP C

0.10UF 1.0UF 0.10UF 2.2UF 0.10UF

K K K 4WV K

C85 C88 C89 C90-92 C93

18

∗

E : TH-K2E E3 : TH-K2ET

K : TH-K2AT K2 : TH-K2AT

M : TH-K2AT M2 : TH-K2AT

∗

∗

Destination

TH-K2AT/K2E/K2ET PARTS LIST TX-RX UNIT (X57-674X-XX) New

Ref. No. Address parts

Parts No.

Description

Destination

New

Ref. No. Address parts

C230 C231,232 C235,236 C237 C238-241

CK73FB1C105K CK73HB1H102K CK73HB1C103K C92-0628-05 CK73HB1H102K

CHIP C CHIP C CHIP C CHIP-TAN CHIP C

1.0UF 1000PF 0.010UF 10UF 1000PF

K K K 10WV K

C359,360 C366 C500,501 C502 C503

C242 C243 C246 C247,248 C249

CK73HB1C103K CK73HB1H102K C92-1327-05 CK73HB1A104K CK73HB1H102K

CHIP C CHIP C CHIP-TAN CHIP C CHIP C

0.010UF 1000PF 100UF 0.10UF 1000PF

K K 10WV K K

C250 C252 C253 C255 C256,257

CK73EF1C105Z CC73HCH1H101J C92-0628-05 C92-0628-05 CK73HB1H102K

CHIP C CHIP C CHIP-TAN CHIP-TAN CHIP C

1.0UF 100PF 10UF 10UF 1000PF

Z J 10WV 10WV K

C258 C270,271 C272 C276 C279-285

CK73HB1A104K CK73HB1H102K CK73HB1H471K CK73HB1H102K CK73HB1H102K

CHIP C CHIP C CHIP C CHIP C CHIP C

0.10UF 1000PF 470PF 1000PF 1000PF

K K K K K

C286 C290,291 C293 C294,295 C297

CK73FB1C105K CK73HB1H102K CC73HCH1H470J CC73HCH1H050C CK73HB1A104K

CHIP C CHIP C CHIP C CHIP C CHIP C

1.0UF 1000PF 47PF 5.0PF 0.10UF

K K J C K

C298 C299 C300 C302 C303

CK73HB1H102K CK73FB1C105K CK73HB1H102K CK73HB1H102K C92-0605-05

CHIP C 1000PF CHIP C 1.0UF CHIP C 1000PF CHIP C 1000PF TANTALUM C 150UF

K K K K 6.3WV

C304-306 C307 C308 C309 C310

CK73HB1H102K CK73HB1A104K CK73HB1H102K CK73FB1C105K CK73EF1C105Z

CHIP C CHIP C CHIP C CHIP C CHIP C

1000PF 0.10UF 1000PF 1.0UF 1.0UF

K K K K Z

C311 C312,313 C314 C316 C317,318

CK73GB1C104K CK73HB1A393K CK73HB1H102K CK73GB1C104K CK73HB1H102K

CHIP C CHIP C CHIP C CHIP C CHIP C

0.10UF 0.039UF 1000PF 0.10UF 1000PF

K K K K K

C319 C320,321 C323-326 C327 C328

C92-0628-05 CK73HB1C822K CK73HB1H102K CK73HB1A104K CK73GB0J105K

CHIP-TAN CHIP C CHIP C CHIP C CHIP C

10UF 8200PF 1000PF 0.10UF 1.0UF

10WV K K K K

C329 C330,331 C332 C335,336 C338

CC73FCH1H560J CK73HB1H102K CK73HB1A104K CK73HB1A104K CK73FB1C105K

CHIP C CHIP C CHIP C CHIP C CHIP C

56PF 1000PF 0.10UF 0.10UF 1.0UF

J K K K K

C339 C344-348 C349 C349 C349,350

CK73HB1A473K CK73HB1H102K CK73HB1A104K CK73HB1A104K CK73HB1A104K

CHIP C CHIP C CHIP C CHIP C CHIP C

0.047UF 1000PF 0.10UF 0.10UF 0.10UF

K K K K K

C351 C352-354 C355,356 C357 C358

CK73HB1C103K CK73HB1H102K CK73HB1C103K CK73EF1C105Z CK73HB1A473K

CHIP C CHIP C CHIP C CHIP C CHIP C

0.010UF 1000PF 0.010UF 1.0UF 0.047UF

K K K Z K

E : TH-K2E E3 : TH-K2ET

K : TH-K2AT K2 : TH-K2AT

M : TH-K2AT M2 : TH-K2AT

Destination

CHIP C CHIP C CHIP C CHIP C CHIP C

0.10UF 100PF 1.5PF 3.0PF 100PF

K G B B G

C504 C505 C506 C510 C511,512

CC73HCH1H020B CK73HB1A473K CK73HB1H102K CC73HCH1H101J CK73HB1H471K

CHIP C CHIP C CHIP C CHIP C CHIP C

2.0PF 0.047UF 1000PF 100PF 470PF

B K K J K

E,E3 E,E3

C514 C515-517

CK73GB1H471K CK73HB1H471K

CHIP C CHIP C

470PF 470PF

K K

E,E3 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 PIN ASSY SOCKET PIN ASSY PIN ASSY SOCKET TERMINAL TERMINAL DC JACK 3.5D PHONE JACK(3.5D)

∗

∗ ∗

CN9 CN15 CN17 J2 J3

∗

∗

E40-6309-05 E23-1081-05 E23-1081-05 E03-0190-05 E11-0484-05

J4

∗

E11-0483-05

2.5D PHONE JACK(2.5D)

CN10 F1 F3

∗ ∗ ∗

F01-1032-05 F53-0286-05 F53-0287-05

RADIATION PLATE FUSE(2.5A/32V) FUSE(0.5A/32V)

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 SMALL FIXED INDUCTOR

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

∗

L41-4778-14 L41-6868-14 L34-4577-05 L34-4606-05 L41-2285-14

SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR AIR-CORE COIL AIR-CORE COIL SMALL FIXED INDUCTOR

∗ ∗

L34-4569-05 L34-4567-05 L34-4569-05 L41-4785-14 L41-6885-14

AIR-CORE COIL AIR-CORE COIL AIR-CORE COIL SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR

L28 L29 L32 L35 L38

L40-2775-71 L40-2275-71 L41-8278-14 L41-8278-14 L41-8278-14

SMALL FIXED INDUCTOR(27NH) SMALL FIXED INDUCTOR(22NH) SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR

L40 L41 L45,46 L49 L50

L41-6878-14 L41-1878-14 L41-5685-14 L92-0131-05 L92-0137-05

SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR FERRITE CHIP FERRITE CHIP

L40-1575-71 L40-5675-71

SMALL FIXED INDUCTOR(15NH) SMALL FIXED INDUCTOR(56NH)

L5,6 L8 L9-11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21-23 L26 L27

M,M2,E E3 K,K2

Description

CK73HB1A104K CC73GCH1H101G CC73HCH1H1R5B CC73HCH1H030B CC73GCH1H101G

∗

CD1 CF1 L1 L2 L3

K,K2

Parts No.

L53 L54

∗ ∗

∗

∗

∗

E,E3

19

TH-K2AT/K2E/K2ET PARTS LIST TX-RX UNIT (X57-674X-XX) New

Parts No.

Ref. No. Address parts

Description

Destination

New

Ref. No. Address parts

Parts No.

Description

Destination

L41-1078-14 L41-2278-14 L41-8285-14 L92-0140-05 L40-4795-85

SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR SMALL FIXED INDUCTOR FERRITE CHIP SMALL FIXED INDUCTOR(4.7UH)

R70-72 R74,75 R76-79 R80 R81

RK73EB2ER39K RK73HH1J104D RK73HH1J154D RK73HB1J103J RK73HB1J394J

CHIP R RESISTOR RESISTOR CHIP R CHIP R

0.39 100K 150K 10K 390K

K D D J J

1/4W 1/16W 1/16W 1/16W 1/16W

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 CHIP R CHIP R CHIP R CHIP R

27K 56K 100K 560 5.6K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

RK75HA1J272J RK75GB1J392J RK75GB1J392J RK75HA1J102J RK73HB1J102J

CHIP-COM CHIP-COM CHIP-COM CHIP-COM CHIP R

2.7K 3.9K 3.9K 1.0K 1.0K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R88 R90 R91 R92 R93

RK73HB1J331J RK73HB1J331J RK73HB1J102J RK73HB1J332J RK73HB1J470J

CHIP R CHIP R CHIP R CHIP R CHIP R

330 330 1.0K 3.3K 47

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R5 R6 R7 R8 R9

RK73HB1J104J RK73HB1J102J RK73HB1J473J RK73HB1J104J RK73HB1J271J

CHIP R CHIP R CHIP R CHIP R CHIP R

100K 1.0K 47K 100K 270

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R94 R95 R96-98 R99,100 R101

RK73HB1J331J RK73HB1J104J RK73HB1J823J RK73HB1J105J RK73HB1J470J

CHIP R CHIP R CHIP R CHIP R CHIP R

330 100K 82K 1.0M 47

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R10 R11 R12 R13 R14

RK73HB1J470J RK73HB1J154J RK73HB1J470J RK73HB1J682J RK73HB1J332J

CHIP R CHIP R CHIP R CHIP R CHIP R

47 150K 47 6.8K 3.3K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R102 R103 R104 R110,111 R115

R92-1368-05 RK73HB1J272J RK73HB1J560J RK73HB1J105J RK73HB1J562J

CHIP R CHIP R CHIP R CHIP R CHIP R

0 OHM 2.7K 56 1.0M 5.6K

J J J J

1/16W 1/16W 1/16W 1/16W

R15 R16 R17 R18 R19

RK73HB1J562J RK73HB1J471J RK73HB1J332J RK73HB1J100J RK73HB1J124J

CHIP R CHIP R CHIP R CHIP R CHIP R

5.6K 470 3.3K 10 120K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R116 R117 R118 R119 R120

RK73HB1J124J RK73HH1J272D RK73HB1J273J RK73HB1J182J RK73HB1J272J

CHIP R RESISTOR CHIP R CHIP R CHIP R

120K 2.7K 27K 1.8K 2.7K

J D J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R20 R21 R22 R24 R30

RK73HB1J102J RK73HB1J472J RK73HB1J822J RK73HB1J471J RK73HB1J122J

CHIP R CHIP R CHIP R CHIP R CHIP R

1.0K 4.7K 8.2K 470 1.2K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R122 R123 R124 R125 R126

RK73HB1J272J RK73HB1J182J RK73HB1J332J RK73HB1J561J RK73HB1J273J

CHIP R CHIP R CHIP R CHIP R CHIP R

2.7K 1.8K 3.3K 560 27K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R31 R32 R33 R34 R35

RK73HB1J222J RK73HB1J102J RK73HB1J220J RK73HB1J332J RK73HB1J124J

CHIP R CHIP R CHIP R CHIP R CHIP R

2.2K 1.0K 22 3.3K 120K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R127 R128 R130 R131 R132

RK73HB1J470J RK73HB1J332J RK73HB1J101J RK73HB1J334J RK73HB1J222J

CHIP R CHIP R CHIP R CHIP R CHIP R

47 3.3K 100 330K 2.2K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R36 R37,38 R39 R41 R42

RK73HB1J100J RK73HB1J563J RK73HB1J271J RK73HB1J271J RK73HB1J101J

CHIP R CHIP R CHIP R CHIP R CHIP R

10 56K 270 270 100

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R133 R134 R135 R137 R140

RK73HB1J102J RK73HB1J394J RK73HB1J474J RK73HB1J472J RK73HB1J184J

CHIP R CHIP R CHIP R CHIP R CHIP R

1.0K 390K 470K 4.7K 180K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R45 R46 R47 R49 R50

RK73HB1J332J RK73HB1J103J RK73HB1J562J RK73HB1J331J RK73HB1J330J

CHIP R CHIP R CHIP R CHIP R CHIP R

3.3K 10K 5.6K 330 33

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R141 R142 R143 R144 R145

RK73HB1J183J RK73HB1J472J RK73HB1J471J R92-1368-05 RK73HB1J472J

CHIP R CHIP R CHIP R CHIP R CHIP R

18K 4.7K 470 0 OHM 4.7K

J 1/16W J 1/16W J 1/16W

R51 R52 R53,54 R55 R56

RK73HB1J471J RK73HB1J102J RK73HB1J101J RK73HB1J471J RK73HB1J102J

CHIP R CHIP R CHIP R CHIP R CHIP R

470 1.0K 100 470 1.0K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R146 R147 R148 R149 R151

RK73HB1J183J RK73HB1J471J RK73HB1J154J RK73HB1J473J RK73HB1J681J

CHIP R CHIP R CHIP R CHIP R CHIP R

18K 470 150K 47K 680

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R58 R59 R60 R61,62 R64

RK73HB1J100J RK73HB1J123J RK73HB1J563J RK73HB1J221J R92-1368-05

CHIP R CHIP R CHIP R CHIP R CHIP R

10 12K 56K 220 0 OHM

J J J J

1/16W 1/16W 1/16W 1/16W

R152 R153 R155,156 R157,158 R159

RK73HB1J154J RK73HB1J102J RK73HB1J104J RK73HB1J334J RK73HB1J124J

CHIP R CHIP R CHIP R CHIP R CHIP R

150K 1.0K 100K 330K 120K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

L55 L56 L58 L63 L64

∗ ∗

L66 L68 X1 X3 XF1

∗

CP1 CP2 CP31 CP32-35 R4

∗

20

∗ ∗ ∗

E : TH-K2E E3 : TH-K2ET

K : TH-K2AT K2 : TH-K2AT

M : TH-K2AT M2 : TH-K2AT

J 1/16W

TH-K2AT/K2E/K2ET PARTS LIST TX-RX UNIT (X57-674X-XX) New

Ref. No. Address parts

Parts No.

Description

Destination

New

Ref. No. Address parts

Parts No.

Description

Destination

R160 R161 R162 R163 R164

RK73HB1J472J RK73HB1J102J RK73HB1J184J RK73HB1J564J RK73HH1J103D

CHIP R CHIP R CHIP R CHIP R CHIP R

4.7K 1.0K 180K 560K 10K

J J J J D

1/16W 1/16W 1/16W 1/16W 1/16W

R231 R235,236 R237 R238,239 R240

RK73HB1J151J RK73HB1J102J RK73HB1J104J RK73HB1J102J RK73HB1J104J

CHIP R CHIP R CHIP R CHIP R CHIP R

150 1.0K 100K 1.0K 100K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R165,166 R167,168 R169 R170 R171

RK73HB1J824J RK73HB1J184J RK73GH1J104D RK73HH1J473D RK73HH1J563D

CHIP R CHIP R CHIP R RESISTOR RESISTOR

820K 180K 100K 47K 56K

J J D D D

1/16W 1/16W 1/16W 1/16W 1/16W

R241-243 R244 R246 R248 R252

RK73HB1J334J R92-1252-05 RK73HB1J392J RK73HB1J392J RK73HB1J104J

CHIP R CHIP R CHIP R CHIP R CHIP R

330K 0 OHM 3.9K 3.9K 100K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R172 R173 R174 R175 R176

RK73HB1J103J RK73HB1J153J RK73HB1J564J RK73HB1J222J RK73HB1J824J

CHIP R CHIP R CHIP R CHIP R CHIP R

10K 15K 560K 2.2K 820K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R253,254 R255 R256 R257 R258

RK73HB1J102J R92-1368-05 RK73HB1J102J RK73HB1J563J RK73HB1J681J

CHIP R CHIP R CHIP R CHIP R CHIP R

1.0K 0 OHM 1.0K 56K 680

J 1/16W

R177 R178 R179 R180 R181

RK73HB1J103J R92-1368-05 RK73HB1J224J RK73HB1J393J RK73HB1J471J

CHIP R CHIP R CHIP R CHIP R CHIP R

10K 0 OHM 220K 39K 470

J 1/16W J 1/16W J 1/16W J 1/16W

R258,259 R258,259 R259 R260 R260

R92-1368-05 R92-1368-05 RK73HB1J684J RK73HB1J473J RK73HB1J473J

CHIP R CHIP R CHIP R CHIP R CHIP R

0 OHM 0 OHM 680K J 1/16W 47K J 1/16W 47K J 1/16W

M,M2,E E3 K,K2 M,M2,E E3

R182 R183 R185 R186 R188

RK73HB1J102J RK73HB1J333J RK73HB1J274J RK73GB1J683J RK73HB1J470J

CHIP R CHIP R CHIP R CHIP R CHIP R

1.0K 33K 270K 68K 47

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R260,261 R263 R264 R264 R271

RK73HB1J473J RK73HB1J103J R92-1368-05 R92-1368-05 RK73HB1J120J

CHIP R CHIP R CHIP R CHIP R CHIP R

47K J 1/16W 10K J 1/16W 0 OHM 0 OHM 12 J 1/16W

K,K2

R189 R190,191 R192 R193 R194

R92-1368-05 RK73HB1J473J RK73HB1J471J RK73HB1J182J RK73HB1J103J

CHIP R CHIP R CHIP R CHIP R CHIP R

0 OHM 47K 470 1.8K 10K

J J J J

1/16W 1/16W 1/16W 1/16W

R272 R273 R275-277 R282,283 R285,286

RK73HB1J472J RK73HB1J102J RK73HB1J473J R92-1368-05 R92-1368-05

CHIP R CHIP R CHIP R CHIP R CHIP R

4.7K J 1/16W 1.0K J 1/16W 47K J 1/16W 0 OHM 0 OHM

R195 R196 R197 R198 R199

RK73HB1J101J RK73HB1J103J RK73HB1J101J RK73HB1J103J RK73HB1J102J

CHIP R CHIP R CHIP R CHIP R CHIP R

100 10K 100 10K 1.0K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R290,291 R310 R312 R313 R318

R92-1368-05 RK73HB1J392J RK73HB1J472J RK73HB1J332J RK73HB1J102J

CHIP R CHIP R CHIP R CHIP R CHIP R

0 OHM 3.9K 4.7K 3.3K 1.0K

R200 R201 R202 R203 R204

RK73HB1J103J RK73HB1J472J RK73HB1J473J RK73HB1J474J RK73HB1J184J

CHIP R CHIP R CHIP R CHIP R CHIP R

10K 4.7K 47K 470K 180K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R323 R324,325 R326 R328 R330

RK73HB1J472J RK73HB1J473J R92-1368-05 RK73HB1J474J RK73HB1J471J

CHIP R CHIP R CHIP R CHIP R CHIP R

4.7K 47K 0 OHM 470K 470

J 1/16W J 1/16W

R205 R206 R207 R208 R209

RK73HB1J101J RK73HB1J150J RK73HB1J102J RK73HB1J100J RK73HB1J104J

CHIP R CHIP R CHIP R CHIP R CHIP R

100 15 1.0K 10 100K

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R332 R335 R336 R337 R341

RK73FB2A150J RK73HB1J102J RK73HB1J221J RK73HB1J471J R92-1368-05

CHIP R CHIP R CHIP R CHIP R CHIP R

15 1.0K 220 470 0 OHM

J J J J

1/10W 1/16W 1/16W 1/16W

R210 R211 R212 R213 R214

RK73FB2A120J RK73HB1J474J RK73HB1J103J RK73HB1J223J RK73HB1J103J

CHIP R CHIP R CHIP R CHIP R CHIP R

12 470K 10K 22K 10K

J J J J J

1/10W 1/16W 1/16W 1/16W 1/16W

R342,343 R344 R345 R346 R347

R92-1252-05 RK73HB1J104J R92-1252-05 RK73HB1J680J RK73HB1J101J

CHIP R CHIP R CHIP R CHIP R CHIP R

0 OHM 100K 0 OHM 68 100

J J J J J

1/16W 1/16W 1/16W 1/16W 1/16W

R215 R216 R217 R218 R223

RK73HB1J474J RK73HB1J103J RK73HB1J821J R92-1368-05 RK73HB1J224J

CHIP R CHIP R CHIP R CHIP R CHIP R

470K 10K 820 0 OHM 220K

J 1/16W J 1/16W J 1/16W

R348 R349 R351 R353 R354

RK73HB1J221J R92-1368-05 RK73HB1J221J RK73HB1J333J R92-1368-05

CHIP R CHIP R CHIP R CHIP R CHIP R

220 J 1/16W 0 OHM 220 J 1/16W 33K J 1/16W 0 OHM

R224 R226 R227 R230 R230

RK73HB1J183J RK73HB1J221J RK73HB1J101J RK73HB1J221J RK73HB1J221J

CHIP R CHIP R CHIP R CHIP R CHIP R

18K 220 100 220 220

J J J J J

E : TH-K2E E3 : TH-K2ET

∗

K : TH-K2AT K2 : TH-K2AT

M : TH-K2AT M2 : TH-K2AT

J 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W

K,K2,M M2,E3

J 1/16W J 1/16W J 1/16W

J J J J

K,K2 K,K2

M,M2,E E3

1/16W 1/16W 1/16W 1/16W

J 1/16W J 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)

S7

∗

S70-0485-05

TACT SWITCH (PTT)

K,K2

21

TH-K2AT/K2E/K2ET PARTS LIST TX-RX UNIT (X57-674X-XX) New

Parts No.

Ref. No. Address parts

Description

MIC1

T91-0580-05

MIC ELEMENT

D1,2 D5 D6 D7 D8,9

1SV325 HSC277 1SV305 MA2S111 HSC277

VARIABLE CAPACITANCE DIODE DIODE VARIABLE CAPACITANCE DIODE DIODE DIODE

D10 D12,13 D14 D15 D16

XB15A709 HVC131 MA2S111 MA8039 MA2S111

DIODE DIODE DIODE ZENER DIODE DIODE

D17 D18-21 D22 D24 D25

HSM88AS 1SV305 1SS361 MA742 MA2S111

DIODE VARIABLE CAPACITANCE DIODE DIODE DIODE DIODE

D26 D27 D30 D31 D32,33

1SS388 RB706F-40 RB521S-30 DA221 RB051L-40

DIODE DIODE DIODE DIODE DIODE

D34 D35,36 D60 D62 D62-65

MAZS0270H RB521S-30 MA2S111 MA2S111 MA2S111

ZENER DIODE DIODE DIODE DIODE DIODE

D63-65 D64,65 D69-73 D74 D79

MA2S111 MA2S111 MA2S111 DA221 DA221

DIODE DIODE DIODE DIODE DIODE

D80 IC1 IC2 IC3 IC4

∗

RB521S-30 LMX2316TMX NJM2904V TA31136FN XC6202PB52FR

DIODE MOS IC MOS IC MOS IC MOS IC

∗ ∗ ∗

NJM2107F TA7368F 90522BPFFG139 TK11250CM S-80844CNNBB85

MOS IC MOS IC MPU MOS IC MOS IC

S-80930CNNBG80 TK11250CUCB AT25160N10SI27 NJM2904V NJM2902V

MOS IC MOS IC ROM IC MOS IC MOS IC

2SC5066(O) 2SC5488 2SK1830 2SC4617(R) 2SC5488

TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR

IC5 IC6 IC8 IC9 IC10 IC11 IC12 IC15 IC16 IC17 Q1 Q2 Q3 Q4 Q5,6

∗

∗ ∗

∗

∗

Q9 Q10 Q11 Q12 Q13

∗

2SC5488 2SC4926YD 2SK2596 2SK3476 2SK1830

TRANSISTOR TRANSISTOR FET FET FET

Q14 Q15 Q16

∗

RN4902 2SC4617(R) 3SK318

TRANSISTOR TRANSISTOR FET

22

E : TH-K2E E3 : TH-K2ET

K : TH-K2AT K2 : TH-K2AT

Destination

Q17 Q20 Q21 Q22 Q23 Q24 Q27 Q29 Q30 Q31

∗

∗

Q33 Q34,35 Q36 Q37 Q38 Q41 Q47 Q50 Q51 Q52

E E,E3 K,K2 M,M2 E,E3

M : TH-K2AT M2 : TH-K2AT

New

Ref. No. Address parts

Q53 Q55 Q56 Q57 Q58 Q58 Q58,59 TH1 TH3,4

∗

∗ ∗

∗ ∗ ∗

∗

Parts No.

Description

2SK1215(E) 2SK1830 2SC4617(R) RN2105 KTC4082

FET FET TRANSISTOR TRANSISTOR TRANSISTOR

2SC5488 2SK1830 2SC4919 2SC4617(R) 2SK1830

TRANSISTOR FET TRANSISTOR TRANSISTOR FET

2SB1184(Q,R) 2SK1830 2SJ347 2SB1184(Q,R) 2SC4617(R)

TRANSISTOR FET FET TRANSISTOR TRANSISTOR

RN2105 RN1701 2SK1830 RN4902 RN1107

TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR

RN2701 CPH3317 CPH3417 RN2105 2SK1830

TRANSISTOR FET FET TRANSISTOR FET

2SK1830 2SK1830 B57331V2103J B57331V2104J

FET FET THERMISTOR THERMISTOR

Destination

M,M2,E E3 K,K2

TH-K2AT/K2E/K2ET EXPLODED VIEW (TH-K2AT / K2ET) B

A

C

7

35

3 B

34

6

1

40 29

D

36

16 D TX-RX Unit (B/3)

10

D

37

8

31

Dx2 Gx2

D D TX-RX Unit (C/3)

17

Ex2 D E D Dx2

19

18

9

D 15

23 33 2

TX-RX Unit (A/3) 28 39

14

Ax2 22

13 21

E

45

E

4

Fx2 701. STICKER

3

1 (K2, M2)

5

702. STANDARD LABEL : K, K2 12

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 Parts with the exploded numbers larger than 700 are not supplied. 23

TH-K2AT/K2E/K2ET EXPLODED VIEW (TH-K2E) D

C

C

7

35 2 B

34

6

1

40 38

29

D 16 D TX-RX Unit (B/3)

10

D

37

8

31

Dx2 Gx2

D D TX-RX Unit (C/3)

17

Ex2 D E D Dx2

19

18

9

D 15

23 33 2

TX-RX Unit (A/3) 28 39

14

Ax2 22

13 21

45

E E

4

5

Fx2 3

701. STICKER

12

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.

TH-K2AT/K2E/K2ET PACKING (K, M, E and E3 types) F

E

703. PAMPHLET (R & TTE) : E, E3 704. PAMPHLET 705. WARRANTY CARD : K, E, E3 1

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

42.CHARGER (230V/13.8V) (W08-0959-15) : M, E, E3

41.HELICAL ANTENNA (T90-1018-25)

43.CHARGER (120V/13.8V) (W08-0960-15) : K

2

44.BATTERY ASSY (7.2V/1100mAh) (W09-0991-05)

26.PACKING FIXTURE (H12-3146-01)

30. BELT HOOK ASSY (J29-0709-04)

32.HANDSTRAP (J69-0342-05) : M, E, E3

3

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. 25

TH-K2AT/K2E/K2ET PACKING (K2 and M2 types) H

G

11.INSTRUCTION MANUAL (B62-1695-00):M2 (B62-1696-00) (B62-1697-00):K2

1

704. PAMPHLET

705. WARRANTY CARD : K2

2

32.HANDSTRAP (J69-0342-05) : M2

1.CABINET ASSY (BATTERY CASE) (A02-3817-02)

25.ITEM CARTON CASE (H52-2009-02)

41.HELICAL ANTENNA (T90-1018-25)

30.BELT HOOK ASSY (J29-0709-04) 27.PACKING FIXTURE (H12-3147-03) 3

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

TH-K2AT/K2E/K2ET ADJUSTMENT Single Tone Mode This mode is used to check the DTMF deviation.

Operation ■ 16key (K, K2, M, M2 and E3 types) 1. Press the [PTT] key on the transceiver to switch to the transmission mode. 2. Press the [MONI] key to enter the single tone mode. 3. Press any key from [1] to [8] keys to transmit a single tone. The single tone is consisting of eight frequencies. [1] 697Hz [2] 770Hz [3] 852Hz [4] 941Hz [5] 1209Hz [6] 1336Hz [7] 1477Hz [8] 1633Hz 4. When the [MONI] key is pressed 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. 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. 4. When the [MR] key is pressed during the transmission, single-tone 1633 Hz is transmitted. 5. When the [MONI] key is pressed again during the transmission, the transceiver switch to the reception mode, the single tone mode is turned OFF. • 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.

Adjustment Mode This mode is used to replace or readjust the IC15 (EEPROM). Adjust the following adjustment items after setting the transceiver to “Adjustment Mode”. ■ Adjustment Items 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 Smeter light) 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)

G. 7.5V TX M power (Lower limit frequency, center frequency, upper limit frequency) 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) J. 13.8V TX M power (Lower limit frequency, center frequency, upper limit frequency) K. 13.8V TX L power (Lower limit frequency, center frequency, upper limit frequency) L. DCS modulation balance M.Tone deviation (Lower limit frequency, center frequency, upper limit frequency) N. DCS deviation (Lower limit frequency, center frequency, upper limit frequency) O. VOX sensitivity (Level 1, level 9) ■ Operation in Adjustment 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).

Short these two lands

SET

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 frequency display, and the value stored in the EEPROM is displayed on the memory channel number display. Blink

The value stored in the EEPROM. (00-FE) Adjustment item

Current adjustment value (00-FE)

5. The functions of transceiver keys in Adjustment Mode are as follows:

27

TH-K2AT/K2E/K2ET ADJUSTMENT Key name PTT LAMP MONI MENU F VFO MR CALL

Encoder

[key] Transmit while this key is held down. Changes adjustment items. (Forward) When this key is pressed on the frequency display, it switches to the adjustment display. Changes adjustment items. (Back) 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 VFO mode When this key is pressed on the adjustment display, it switches to the frequency display. Memory mode 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. Increase or decrease adjustment values (00 - FE). (adjustment display) Increase or decrease frequency and memory channel number. (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). • In the Adjustment Mode, Transmission and Reception frequencies becomes extensive. A. Overvoltage warning reference voltage (14.8V [DC IN]) (1) Press the [LAMP] or [MONI] key on the transceiver to display “DC” 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.

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

B. Battery terminal reference voltage (7.5 V [Battery terminal]) (1) Press the [LAMP] or [MONI] key on the transceiver to display “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.

[F] key → [key] Selecting a TX power (High/Mid/Low) Lamp always ON Squelch level setting mode Function mode/MHz mode OFF M→V (Memory shift) M.IN (Memory registration)

Increase or decrease frequency (1MHz step). (frequency display)

(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. C. Squelch (SQL1, SQL2) 1Squelch (SQL1) (1) Press the [LAMP] or [MONI] key on the transceiver to display “SQ1” on the LCD. 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 noise level value into the EEPROM. 2Squelch (SQL2) (1) Press the [LAMP] or [MONI] key on the transceiver to display “SQ2” on the LCD.

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

28

TH-K2AT/K2E/K2ET ADJUSTMENT D. S-meter (Two segments in S-meter light, all segments in S-meter 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. The current RSSI 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.

(2) Press the [MENU] key to write the current RSSI level value into the EEPROM. 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 [MENU] key to write the current RSSI level value into the EEPROM. E. RX BPF (Lower limit frequency, center frequency, upper limit frequency) 1RX BPF (Lower limit frequency) (1) Press the [LAMP] or [MONI] key on the transceiver to display “BPL” on the LCD. The current BPF tuning 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) 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.

2RX BPF (Center frequency) (1) Press the [LAMP] or [MONI] key on the transceiver to display “BPC” on the LCD.

(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 (6) of “1RX BPF (Lower limit frequency)” described on page 29. 3RX BPF (Upper limit frequency) (1) Press the [LAMP] or [MONI] key on the transceiver to display “BPH” 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 frequency on the LCD. (4) Repeat steps (4) to (6) of “1RX BPF (Lower limit frequency)” described on page 29. F. 7.5V TX H power (Lower limit frequency, center frequency, upper limit 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. 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) 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. 29

TH-K2AT/K2E/K2ET ADJUSTMENT (8) Press the [MENU] key to write the current APC value into the EEPROM. 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.

(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. 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.

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

(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. 30

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

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. (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. 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.

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

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

(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.

31

TH-K2AT/K2E/K2ET ADJUSTMENT J. 13.8V TX M power (Lower limit frequency, center frequency, upper limit frequency) 113.8V TX M 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. 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. (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. 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. 313.8V TX M 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. 32

(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower limit frequency)” described on page 32. K. 13.8V TX L power (Lower limit frequency, center frequency, upper limit frequency) 113.8V TX L 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. 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 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 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 L power (Lower limit frequency)” described on page 32. 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.

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. L. DCS modulation 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) When the [PTT] key is pressed to enable transmit mode, a 100Hz square waveform is internally generated 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. (4) When the DCS modulation waveform becomes a square waveform, release the [PTT] key. M.Tone deviation (Lower limit frequency, center frequency, upper limit frequency) 1Tone 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 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) 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.

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.

(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. 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.

(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. N. DCS deviation (Lower limit frequency, center frequency, upper limit 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 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. 33

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 preset DCS code (023) is internally generated and modulated. (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. 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.

34

(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. 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.

TH-K2AT/K2E/K2ET ADJUSTMENT Common Section Item

Condition

Measurement Test equipment

Unit

Adjustment Terminal

Unit

Parts

Method

Specifications/ Remarks

1.Setting and Connect the optional PG-2W LCD total illumination display Initial configuration displayed after resetting DC cable to the power supply. the full-reset. 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. 2 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 1) Frequency: 136.000MHz PTT: ON 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 f. counter Adjust Frequency: 145.990MHz PTT: ON 4.Overvoltage Switch to Adjustment mode warning and carry out the operations reference for adjustment item A. voltage (Refer to page 28) Adjust/Check 1) LCD display: DC DC power supply Frequency: 145.050MHz (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) Frequency: 146.050MHz (K, K2, M, M2) DC IN terminal voltage: 17.5V

TX-RX (A/3)

LV

Check

0.7V or more 4.3V or less 0.7V or more 4.3V or less

ANT

TX-RX (A/3)

VR1

145.990MHz

[MENU]

Write

Check

±150Hz

Alarm sound and display “DC ERR” message.

35

TH-K2AT/K2E/K2ET ADJUSTMENT Receiver section Item 1.RX BPF Adjust

Condition Squelch level: 0 1) Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2) SSG output: –53dBm (501 uV) 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 Frequency: 136.050MHz SSG: –119dBm (0.25 uV) 3) SSG: –113dBm (0.501 uV)

Measurement Test equipment

Unit

SSG Oscilloscope Distortion meter AF V.M Dummy load

TX-RX (A/3)

Adjustment Terminal ANT SP

Unit

Parts

Turn the VOL knob 0.63V to obtain 0.63V AF output.

Encoder [MENU]

Write

Max Sensitivity

Check

12dB SINAD or more Max Sensitivity

4) LCD display: BPC Frequency: 146.050MHz SSG: –119dBm (0.25 uV) 5) SSG: –120dBm (0.22 uV)

Encoder [MENU]

6) LCD display: BPH Frequency: 160.050MHz SSG: –119dBm (0.25 uV) 7) SSG: –113dBm (0.501uV)

Encoder [MENU]

Switch to Adjustment mode SSG and carry out the operations for adjustment item C. (Refer to page 28) 1) LCD display: SQ1 Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2) SSG: –125dBm (0.126uV) 2) LCD display: SQ2 Frequency: 145.050MHz (E, E3) Squelch Frequency: 146.050MHz (K, K2, M, M2) SSG: –120dBm (0.22uV)

36

Specifications/ Remarks

VOL knob

Write

Check Write

Check

2.IF response 1) Frequency : 144.050MHz SSG Check SSG Frequency: 221.750MHz Oscilloscope SSG output: –60dBm (224uV) Distortion meter SSG MOD: 1kHz SSG DEV: 3kHz AF output: 0.63V/8Ω

3.Squelch / S-meter Write

Method

Check

12dB SINAD or more Max Sensitivity

12dB SINAD or more 12dB SINAD or less Note: If the specification is not satisfied, repeat the operations for “1. RX BPF Adjust”.

ANT

[MENU]

Write

[MENU]

Write

Note: In the Squelch adjust ments, all 4 adjusting points including the Smeter must be adjusted.

TH-K2AT/K2E/K2ET ADJUSTMENT Item

Condition

Switch to Adjustment mode and carry out the operations for adjustment item D. (Refer to page 29) S-meter 3) LCD display: S1 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) Frequency: 146.050MHz (K, K2, M, M2) SSG: –105dBm (1.26uV) 4.Squelch Squelch level: 1 Check 1) Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2) SSG output: –123dBm (0.158uV) SSG MOD: 1kHz SSG DEV: 3kHz 2) SSG: OFF 5.S-meter 1) Frequency: 145.050MHz Check (E, E3) Frequency: 146.050MHz (K, K2, M, M2) SSG output: –120dBm (0.22uV) 2) SSG output: –105dBm (1.26uV)

6.Hum and noise ratio Check

1) Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2)

SSG output: –53dBm (501uV) SSG MOD: 1kHz SSG DEV: 3kHz AF Output: 0.63V/8Ω AF V.M = 0dB 2) SSG DEV: OFF 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

Measurement Test equipment

SSG

Unit

TX-RX (A/3)

Adjustment Terminal

ANT

Unit

Parts

Method

[MENU]

Write

[MENU]

Write

SSG Oscilloscope Distortion meter

Check

SSG

Check

Specifications/ Remarks

Open Squelch

Close Squelch Two segments in S-meter light. ■■ All segments in S-meter light. ■■■■■■■■■

SSG Oscilloscope Distortion meter AF V.M

TX-RX (A/3)

ANT SP

Check Check

–38dB or less 5% or less

37

TH-K2AT/K2E/K2ET ADJUSTMENT Item 8.AF output Check

9.Current Drain Check

Condition 1) Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2) SSG output: –53dBm (501uV) SSG MOD: 1kHz SSG DEV: 3kHz AF distortion: 10% Squelch level: 5 1) Frequency: 145.050MHz (E, E3) Frequency: 146.050MHz (K, K2, M, M2) 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

Measurement Test equipment

Unit

SSG Oscilloscope Distortion meter AF V.M

TX-RX (A/3)

Adjustment Terminal

Unit

Parts

ANT SP

SSG Am meter

Method

Specifications/ Remarks

Check

400mW or more

Check

80mA or less

400mA or less

Transmitter section Item

Condition

Measurement Test equipment Unit Terminal

Unit

Adjustment Parts Method

1.TX power Battery terminal voltage: DC power supply TX-RX B Write (Battery 7.5V DVM (A/3) GND terminal: 7.5V) Note: Adjust the output voltage from DC power supply until the voltage at the battery terminal becomes 7.5V while the transceiver is transmitting.

High power

Mid power

38

Switch to Adjustment mode and carry out the operations for adjustment item F. (Refer to page 29) 1)LCD display: P7L, Power meter Frequency: 144.000MHz Am meter PTT: ON 2)LCD display: P7C, Frequency: 145.000MHz PTT: ON 3) LCD display: P7H, Frequency: 145.995MHz PTT: ON 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 5) LCD display: P7C, Frequency: 145.000MHz PTT: ON

ANT

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Specifications/ Remarks Note: Do not use the DC IN terminal.

4.8W ±0.05W 2.0A or less

1.5W ±0.05W 1.4A or less

TH-K2AT/K2E/K2ET ADJUSTMENT Item

Mid power

Low power

Condition

6) LCD display: P7H, Power meter Frequency: 145.995MHz Am meter PTT: ON 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 8)LCD display: P7C, Frequency: 145.000MHz PTT: ON 9)LCD display: P7H,

Frequency: 145.995MHz PTT: ON 2.TX power Connect the optional PG-2W Write (DC IN DC cable to the power supply. terminal: 13.8V) DC IN terminal voltage: 13.8V Switch to Adjustment mode and carry out the operations for adjustment item I. (Refer to page 31) 1)LCD display: P13L, Frequency: 144.000MHz PTT: ON 2)LCD display: P13C, High power Frequency: 145.000MHz PTT: ON 3)LCD display: P13H, Frequency: 145.995MHz PTT: ON 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 5)LCD display: P13C, Mid power Frequency: 145.000MHz PTT: ON 6)LCD display: P13H, Frequency: 145.995MHz PTT: ON Switch to Adjustment mode and carry out the operations for adjustment item K. (Refer to page 32) 7) LCD display: P13L, Low power

Measurement Test equipment Unit Terminal

Frequency: 144.000MHz PTT: ON

DC power supply DVM Power meter Am meter

TX-RX (A/3)

TX-RX (A/3)

ANT

Unit

Adjustment Parts Method Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Specifications/ Remarks

0.5W ±0.05W 0.8A or less

DC IN

ANT

5.0W - 5.1W 2.0A or less

1.5W ±0.05W 1.4A or less

0.5W ±0.05W 0.8A or less

39

TH-K2AT/K2E/K2ET ADJUSTMENT Item

Low power

3.Battery terminal reference voltage Adjust/ Check

Condition 8) LCD display: P13C, Frequency: 145.000MHz PTT: ON 9) LCD display: P13H, Frequency: 145.995MHz PTT: ON Switch to Adjustment mode and carry out the operations for adjustment item B. (Refer to page 28) TX power: Low 1)LCD display: BAT Frequency: 145.000MHz (E, E3) Frequency: 146.000MHz (K, K2, M, M2) PTT: ON

Measurement Test equipment Unit Terminal Power meter Am meter

TX-RX (A/3)

Unit

ANT

DC power supply DVM

Adjustment Parts Method Encoder [MENU]

Write

Encoder [MENU]

Write

[MENU] LCD

Write Check

LCD

Check

VR6

By tuning the VR6, adjust the modulation wave until if becomes the square wave. 4.2kHz According to the larger +, –.

Specifications/ Remarks 0.5W ±0.05W 0.8A or less

All segments are lighted. ■■■■■■■■■

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 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 modulation balance

5.MAX DEV

40

Switch to Adjustment mode and carry out the operations 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) Frequency: 146.000MHz (K, K2, M, M2) PTT: ON To exit from the Adjustment Mode, turn the transceiver power OFF and then ON. MIC terminal input AG: 1kHz/80mV Detector: +P, –P HPF: OFF LPF: 15kHz De-emphasis: OFF TX power: Low

Linear detector Oscilloscope

Linear detector AG Oscilloscope

TX-RX (A/3)

4 to 6 segments are lighted. ■■■■ ~ ■■■■■■

ANT

ANT MIC

VR5

±0.1kHz

TH-K2AT/K2E/K2ET ADJUSTMENT Item

6.MIC sensitivity Check

7.Tone deviation

8.DCS deviation

Condition 1)Frequency: 145.000MHz (E, E3) Frequency: 146.000MHz (K, K2, M, M2) PTT: O N MIC terminal input AG: 1kHz 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)

Measurement Test equipment Unit Terminal Linear detector AG Oscilloscope

PTT: ON Switch to Adjustment mode Linear detector and carry out the operations for adjustment item M. (Refer to page 33) Detector: P-P/2 HPF: OFF LPF: 3kHz De-emphasis: OFF TX power: Low 1)LCD display: DVL, Frequency: 144.000MHz PTT: ON 2)LCD display: DVC, Frequency: 145.000MHz PTT: ON 3)LCD display: DVH, Frequency: 145.990MHz PTT: ON 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 2)LCD display: DVC, Frequency: 145.000MHz PTT: ON 3)LCD display: DVH, Frequency: 145.990MHz PTT: ON

TX-RX (A/3)

ANT MIC

Unit

Adjustment Parts Method VR5

Specifications/ Remarks

4.2kHz According to the larger +, –.

±0.1kHz

Change the AG output level to obtain 3kHz deviation.

4mV - 12mV

Encoder [MENU]

Write

0.8kHz ±50Hz

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

Encoder [MENU]

Write

ANT

0.8kHz ±50Hz

41

TH-K2AT/K2E/K2ET ADJUSTMENT Item 9.VOX Sensitivity Write

10. VOX Operation Check

11. DTMF DEV Check

12. 1750Hz Tone DEV Check (E, E3 types only)

42

Condition

Measurement Test equipment Unit Terminal

Switch to Adjustment mode AG and carry out the operations for adjustment item O. (Refer to page 34) TX power: Low 1)LCD display: VOX1 Frequency: 145.000MHz (E, E3) Frequency: 146.000MHz (K, K2, M, M2) AG: 1kHz/80mV 2)LCD display: VOX9 Frequency: 145.000MHz (E, E3) Frequency: 146.000MHz (K, K2, M, M2) AG: 1kHz/1.5mV To exit from the Adjustment Mode, turn the transceiver 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 HPF: OFF LPF: 15kHz De-emphasis: OFF TX power: Low 1)Frequency: 145.000MHz Linear detector (E, E3) 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 HPF: OFF 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 (E, E3) terminal: 13.8V) Frequency: 146.000MHz (K, K2, M, M2) ANT: OPEN PTT: ON

Am meter

TX-RX (A/3)

Unit

Adjustment Parts Method

Specifications/ Remarks

MIC

[MENU]

Write

[MENU]

Write

Check

Does not transmit.

Transmits.

ANT

Check

2.0kHz - 4.2kHz

Check

2.5kHz - 4.5kHz

Check

2.4A or less

TH-K2AT/K2E/K2ET ADJUSTMENT / TERMINAL FUNCTION TERMINAL FUNCTION

Adjustment points TX-RX unit (A/3) Component side view

CN No. Pin No. Pin Name Function TX-RX UNIT (A/3) : TX-RX↔VOL/ENC CN1

LV

ANT

SET B

VR5

BTEMP VR6 GND

LCD

GND Vol-OUT Vol-IN EN2 GND EN1

GND RX audio volume output RX audio volume input Encoder 2 GND Encoder 1

TX-RX UNIT (A/3) : TX-RX↔Internal speaker CN2

VR1

TX-RX UNIT (A/3) Component side view J2 DC IN

VR1 VR5 VR6 LV

1 2 3 4 5 6

: TX frequency : MAX DEV : DCS modulation valance : VCO lock voltage terminal

J3 MIC

J4 SP

1 2

SPK SPG

Internal speaker audio Audio ground

TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (B/3) : 10KEY CN6, CN7

1 2 3 4 5 6

PTT KIN4 KYO2 KYO1 BL GND

PTT Key matrix input Key matrix output (MONI key) Key matrix output (LAMP key) LCD backlight control GND

TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (C/3) : PTT CN8, CN9

1 2 3 4 5 6 7 8 9 10 11 12 13 14

KIN1 IM KYO3 8M KIN4 MIG LAMP GND KYO0 KIN2 KYO1 KIN0 KYO2 KIN3

Key matrix input Internal microphone Key matrix output 8V power supply Key matrix input Microphone ground Key illumination control GND Key matrix output Key matrix input Key matrix output Key matrix input Key matrix output Key matrix input

43

A

1

B

C

D

E

TH-K2AT/K2E/K2ET

F

G

H

I

J

PC BOARD

TX-RX UNIT (X57-674X-XX) (A/3) Component side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2

C318

C85

C328

R86 Q59 D S

G

C351

C331

R77

R264

R72

R71

R70

F1

F3

R261 1

7

R165 14

R259

R257

R166

8

C321

R171 72 R17 R1

R258

D80

C506

C212

R157

C204

C203 R158

R168

C339

C349

R324

R167 R159

C211

C350

R210

J2 DC IN

C320

R260

IC17

C106

R211

44 14

R344

+

C213

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC1 4D IC17 9J Q21 10D Q36 10E Q56 7L D26 7L D64 4H IC2 8F Q4 4C Q22 10D Q37 8L Q57 8Q D31 9F D65 4H IC3 9B Q6 3E Q23 6B Q38 7K Q59 8J D34 7L D69 3G IC6 6M Q12 5J Q24 8D Q41 9Q D7 4B D40 7S D70 3H IC9 9P Q13 7F Q27 6H Q47 7S D14 8E D41 7S D71 3H IC10 6P Q14 9E Q31 6L Q51 4H D15 9D D60 3H D72 3G IC11 6Q Q15 5E Q34 9F Q53 9Q D16 4D D62 3H D80 10G IC15 7P Q20 10E Q35 10F Q55 5P D25 6K D63 3H

13

BL 5

KYO2

PTT 1

R58

C198

+

C105

R74

R76

C

R37

R140

C195

11

12

6 GND

KYO1

2 KIN4

R255

FREQ

C108

R80

S

G

Q35 R214

R332

D

D

R216

R330

R148

R141

C109

R75

S

G

R272

Q36

R218

S D G

R215

R152

R153

C510

R212 D31

R213

R323

Q20

Q21

R78

R79

1

Q34 G D S

R151

S C78

VR1

C197

4

C110

C356

1 6 Q14 3 4

R117

R145

IC2

C168

C167

R120

Q22

TH3

S D Q27 G

D

Q12

TH1

R146

R81

8

R115

R118 C170

C107

5

C115

C169

R122

R119

C172

C171

C194

R125

R123

C112

R128

C180 R124

R126

C175

R82

C111

+

R116

9

R85

C183

C116

C182

R83

16

IC3

C113

R84

R134

Q24

R133

L58

C191

R189

C192

R188

D15 C117

C176

10

C125

R351

C190

R127

Q13 S D G

C114 D14 R90

C186

C166

VR6 DCS BAL

C196

XF1

R38

GND

C56

C55

C173

VR5

R142

BTEMP

X1

C187

C54

R137

R149

C272

C174

MAX DEV

R143

C70

L46

R135

C193

B

C52

R132

C126 C271

C188

8

G

R144

Q23

C161

R147

C50

L64

C51

C128 R33

R131

1

SET

S +

C66

C57

8

R231

CP2

Q15

R252

D65

C514

C516

C515

R35

C40

R34

D60

C44

C45

C46 D16

R32

+

D71

9

5

9

1 6 Q51 3 4

8

C41

L45

D72

D69

C27

KIN3 14 KIN0 KIN2 GND MIG 8M IM 2

+

R36

7

D64

CN9

C42

C189

D63

C37

R21

6

D70

IC1

C38

CN6

D62

13 KYO2 KYO1 KYO0 LAMP KIN4 KYO3 1 KIN1

16

C30

C25

D7

4

R18 C43

1

+

R30

C35

C1

C26

C21

R24

R20

Q4 +

C22

L53

C33

R31

L68

LV

C20

C34

CP1

Q6

+

3

R19

C24

J

K

L

M

N

O

PC BOARD

P

Q

R

S

TH-K2AT/K2E/K2ET

1

TX-RX UNIT (X57-674X-XX) (A/3) Component side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2 6 GND

KYO1

2 KIN4

BL 5

PTT 1

KYO2

C310 R246

C313

C312

CN6

POWER 1

R248

3

COM0 COM1

LCD

C318

COM2 COM3

R252

SEG0 SEG1 R335

4

ANT

SEG2 SEG3 SEG4

C256

R208

R209

R223

C257

C258

R263

1

C290

IC15

+

SEG19

4

7

4 3 Q47 5 1

SEG18 5

C279

SEG20 Q37

C

R238

SEG21

D S

G

C331

SEG23

R236

C360 C300

R244

SEG24 L63 C346

1

SEG26

3

1

SEG27

4 IC9

R261

6

SEG25

SEG29

R165 14

J3 MIC

SEG30 J4 SP

C309

4 3 Q53 5 1

9

C347

C311

IC17

SEG28

R166

C348

Q41

R260

8

Q57 C344

SEG22 C246

C302

Q59

+ E

R264

72 R170 R1

C291 D41

SEG17

R226

D40

CN2 INT. SP

R205

C250

8

SEG16

R227 + C319

SEG15

B

R171

C354

C355

R237

6

C308

D S

C345

3 2 IC10 4 1

C307

R243

R242

C304

5

1 4 IC11 2 3

C306

SEG11

–

L49

D26

D34

R86 R344

+

SEG9 SEG10

SEG14

C252

R202

3

C305

CP35 CP34

C359

10

6

R354

Q56 G

C510

G

SEG13

R204

Q38

C118

C280

R217

TH1

SEG7

SEG12 R206

C248

D

SEG8

IC6

R349

D25

S

C249 Q31 G D R203 S C247

C255

+

1

5

C253

D

12

R328

+

S

SEG6

R276

C85

S

Q55

SEG5

R207

C317

R224

36 SEG31

10 R157

R158

R159

204

C203

J72-0883-09 (A/3) 11

Component side Layer 1 Layer 2 Layer 3 Layer 4

12

Foil side 13

45 14

A

1

B

C

D

E

TH-K2AT/K2E/K2ET

F

G

H

I

J

PC BOARD

TX-RX UNIT (X57-674X-XX) (A/3) Foil side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2

R103

R111

S G

C158

R110

R102

L40 C502

R345

C159

L18

R62

R61

C89

4

C152

R291 D10

C153

R104

C160

D

L38

D20

L19

C94

C163

L20

L22

Q17

C162

R290

L21

C98

C92

D21

C504

L41

D13

D12

C93

D17

C95

C97

C99

C101

C100

L23

3

C96

C90

CN15 C91

R312

R256

R254

R253

R285

C88 CP32 CP33

R235 R277

C503 C366

91

120 4

6 IC12

90

1

X3

R310

CN17

R313

C294

L16

C293

CN1

C295

6 ENCA GND ENCB VOL IN VOL OUT 1 GND

IC8 R318

C227 R182

5 1

R198

R199

C505

R240

C298

C231 D79 C358

Q29

C238

D74

C239

R196

R195

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC4 10E Q5 3N Q33 9N D9 3M D21 3H D36 9D IC5 10K Q9 4N Q52 7G D10 3G D22 10J D73 7N IC8 7E Q10 5N Q58 6L D12 3G D24 8I D74 11I IC12 6B Q11 6M D1 3R D13 3G D27 9J D79 11I IC16 8L Q16 4L D2 3R D17 3F D30 8N Q1 4P Q17 3J D5 2Q D18 2L D32 8M Q2 3O Q29 10J D6 3Q D19 2K D33 8N Q3 3P Q30 8J D8 4M D20 3I D35 7N

46 14

R183

R193

J72-0883-09 (A/3)

13

C206

C237

D22

R194

+

11

12

Q30

D27

R197

C240

C297

C224 C223

R192

C241

3

R179 R180

C511

C242 R200

R201

4

C283

R239

R181

TH4

C517

C299

IC4

C512

C232

C286

C281

D36

C284

C303

R241

C230

R282

C228

1

2

R

R353

C285

10

C229

C336 R342

R190

R283

R343

R191

D24 R185

C335

C332

+

R C207

R162 C226

60

CP31

31

8

9

C82

C357

R286

R325

C236

Q52 61

30

R1 86

C330

C314

C235

C316

CN10

3

1

R275

7

R326

5

6

L17

R17

J

K

L

M

N

O

P

Q

R

S

TH-K2AT/K2E/K2ET

PC BOARD

1

TX-RX UNIT (X57-674X-XX) (A/3) Foil side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2 C147

C5

C6

D S Q3

3 LV

C2

R13

C8

C7

C9

R7

D1

L6 D6

R8

C3

C10

R22

L5

R9

C131

L3

4

Q1

R42

R52

L27

L56

C65

L10

L26

C74

L55

5

3 R51 Q10

R88

C67 C326

L54

R54

G

S

D

S D G Q58

R59

CN10

C73

4

B

C324

L12

1

R271

R60

L14

R39

C69

C72 R64

D2

R49

2

C366

R14

R10

R15

C13

C64

C130

C503

R346

L2

R50

R92 C129

C75

C325

R91

R93

R348

2

C4

L1

Q9

3

R6 C11

R11

R347

R94

1

C132

C329

C134

4

C133

R62

R97

R45 R47

Q16

R341

L15

C90

C19

L66

R4

R16

Q5

C61

R98

R17

R96

C76

D8

C138

5

L29

C137

C17

C18

D9

L9

R102

L28 C136

R95

C142

G

L8

Q2

R5

G

C501

R46

C14

C135

C145

C141

C500

C15

L32

R99

C148

L35

R103

S

D18

D19

R101

C152

C153

R104

R100

Q17 D

D5 R12

R53

6

L11

C68

L13

Q11

C71 C327

R41 R55

R56

C323

R130

C84 D73

C83

L16

7 R1

C82

69

D35

C207

R162

1

R160 R156

C353

D30

R155

C276

C201

C210

8 C352

C209

C205 R175

C222

D27

C224

C225

R180

D33

8

D32

R179

4 IC16

C208

R163

Q30

R161 R178

C228

5

R273

C206

C226

R181

29

C282

C202

R164

R177

C178 L50

C223

9

CD1

B

183 Q33

R174 C218

R176

C270

3

Q29

C358

C338

IC5 1

C221 R173

C231

C

C220

4

5

R182

CF1

C227

E

C179 C124

+

10

C177

C219

11

Component side Layer 1 Layer 2 Layer 3 Layer 4

12

Foil side 13

47 14

A

1

B

C

D

E

TH-K2AT/K2E/K2ET

F

G

H

I

J

K

L

M

N

PC BOARD

O

PC BOARD

TX-RX UNIT (X57-674X-XX) (A/3) Component side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

P

Q

R

S

TH-K2AT/K2E/K2ET

1

TX-RX UNIT (X57-674X-XX) (A/3) Component side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2

2 6 GND C313

C312

BL 5

KYO2

PTT 1 C318

R335 C256

R263

1

C279

C

5 R238

SEG21 C246

D S

G

C351

R77

C331

E

SEG23

R236

C360 C300

R244

4

6

R72

R71

R70

C346

1

7

IC9

F1

F3

R80

SEG26

3

1

8

R258

R257

D80

SEG30 J4 SP

C309

9

36 SEG31

R167

10

C212

R157

C204

C203 R158

R168

C339

C349

R159

C211

S

G

C350

R210

D

Q35 R214

R332

D

C506

J3 MIC

4 3 Q53 5 1

C347

C311

SEG29

R165 14

R211

C321

R259

IC17

SEG28

R166

C348

Q41

R260

8

Q57 C344

+

SEG22 C302

Q59

R344

Q37

SEG27

R324

D41

4

7

4 3 Q47 5 1

SEG19

SEG24

72 R170 R1

C290

IC15

L63

C320

C291

SEG20

R264

R171

R226

D40

SEG17

+

SEG18

+

B

CN2 INT. SP

R205

R86

C198

C250

8

SEG16

R227

C319

C355

L49

SEG15

SEG25

C106

C354

–

R237

6

C308

3 2 IC10 4 1

C307

R243

C359

10

R242

C304

5

1 4 IC11 2 3

SEG9 SEG10 SEG11

C306

C305

CP35 CP34

IC6

6

D26

D34

D S

C317

G

SEG14

C252

C345

C255

1

5 R206

R354

Q56 G

R261

J2 DC IN

R328

R276

SEG7 SEG8

R202

+

D

SEG13

R37

+

S

SEG6

SEG12

R204

Q38

C118

C280

R217

R153

C213

C108

R208

R209

R349

D25

C328

C248

R152

C105

R74

R76

R223

C257

C258

R58

S C78

Q55

SEG5

C85

VR5

MAX DEV

C195

+

C249 Q31 G D R203 S C247

C510

R140 C109

R75

S

G

R272

Q36

R218

R216

R151

C253

FREQ

R212 D31

R213

R323 R215

R330

R141

R78

R79 1 C110

C356

S D G

Q21

Q20

R117

R145

4

Q34 G D S

S D Q27 G

SEG4 R207 +

VR1

C197

8

C168

C167

R120

Q22

4

ANT

SEG2

D

Q12

TH1

IC2

1 6 Q14 3 4

C170

DCS BAL

R146

R81

C112

C111

5

R115

R118

C107

R82

C115

C169

R122

R119

C172

C171

C194

R123

R85

R128

C180

R125

C175

R83

R134

C183 +

R116 R124

C173

R126

C174

C113

R84

C191

Q24

L58

R133

C116

TH3

C196

XF1

GND R189

C192

R188

R351

D15

C182

9 R135

10

C125

C117

C176

Q13 S D G

C114 D14

16

IC3

VR6

R149

C190

R127

R137

R148

BTEMP

X1

C187

C166

8

R147

C271

R90

C161

G

R143

C70 R142

R132

C126

C186

1

C193

B

C52

L64

C51

R38

KYO1

2 KIN4

CP2

C50

+

L46

8

SET

S

C272

C55

LCD

COM3

R252

C514

C516

C515

R35

Q15

R131

C56

3

COM0

SEG0

R144

C54

1

COM1

R224

R33

C188

POWER

R248

SEG1

C128

Q23

R246

COM2

D65

R231

C66

C57

C310

SEG3

C40

R34

R255

C44

C45

C46 D16

R32

+

D60

9

5

9

1 6 Q51 3 4

8

KIN3 14 KIN0 KIN2 GND MIG 8M IM 2

C27

D71

C30

C25

D7 +

C41

L45

D64

CN9

R36

7

D63

IC1

C38

C42

C189

D72

D70

C37

R21

6

D69

16

CN6

D62

13 KYO2 KYO1 KYO0 LAMP KIN4 KYO3 1 KIN1

+

R30

R18 C43

1

C35

C1

C26

4

C21 R20

Q4 +

C22

L53

C33

R31

L68

LV

R24

C20

C34

CP1

Q6

+

3

R19

C24

J72-0883-09 (A/3) 11

11

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC1 4D IC17 9J Q21 10D Q36 10E Q56 7L D26 7L D64 4H IC2 8F Q4 4C Q22 10D Q37 8L Q57 8Q D31 9F D65 4H IC3 9B Q6 3E Q23 6B Q38 7K Q59 8J D34 7L D69 3G IC6 6M Q12 5J Q24 8D Q41 9Q D7 4B D40 7S D70 3H IC9 9P Q13 7F Q27 6H Q47 7S D14 8E D41 7S D71 3H IC10 6P Q14 9E Q31 6L Q51 4H D15 9D D60 3H D72 3G IC11 6Q Q15 5E Q34 9F Q53 9Q D16 4D D62 3H D80 10G IC15 7P Q20 10E Q35 10F Q55 5P D25 6K D63 3H

12

13

44 14

Component side Layer 1 Layer 2 Layer 3 Layer 4

12

Foil side 13

45 14

A

1

B

C

D

E

TH-K2AT/K2E/K2ET

F

G

H

I

J

K

L

M

N

PC BOARD

O

P

R

S

TH-K2AT/K2E/K2ET

PC BOARD

TX-RX UNIT (X57-674X-XX) (A/3) Foil side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

Q

1

TX-RX UNIT (X57-674X-XX) (A/3) Foil side view (J72-0883-09 A/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3 2

2 C147

C5

C6

D S

G Q3

4

Q9 R42

R52

C65

5

3

4 C67

L54

R54

R271

C326

B

C324

C69

R39

G

S

D

S D G Q58

R59

CN17

CN10

3

R53

6

L11

C68 C71

Q11

L13

C314

C235

C327

R41 R55

R56 R130

69

R156

R177

C178 L50

9

CD1

B

Q33 R174 C218

Q29

R176

C270

3

C505

D79

C338

IC5 1

C221 R173

C231

C

C220

4

5

R182

CF1

C227

C358 D74

C239

R196

C238

C353 D30

R155

C276

C201

C210

R175

C352

C209

C205

8

D32

1

R183

R198 R195

D33

8

R160

C222

C237

D22

R194

+

C282

4 IC16

C208

C224

C225

D27

C511

R197

C240

C297

R163

Q30

C206

R181

C226 TH4

R192

R193 R199

R240

C298

3

R179 R180

5

C223

C241

C283

R239

C230

4

C242 R200

R201

IC4

C512

C517

C299 R241

R185

C232

C286

C281

D36

C284

C303 C285

2

R178 C228

1

D35 C202

R273

R161

R353

R282

R342

R190

R283

R343

R191

C229

C336

C207

R162

D24

CP31

C335

C332

R1

C82

C357

R286

R325

C236

8

+

C83

L16

C295

6 ENCA GND ENCB VOL IN VOL OUT 1 GND

60

31

R1 86

1

C73

1

7

R164

61

30

L3

Q1

D73 C294

LV C2

R13

C8

C7

C9

R9

R7

D1

R8

L6 D6

C10

C3

R22

C13

L5

R10

R348

R17

R14

C84

C293

3

L1

R50

L26

C74

L55

X3

R60

IC12

L12

C323

Q52

10

D2

Q10

R88

L14

R318

CN1

9

L2

R51

C72

IC8

Q5

L10

L27

L56

R277

R326

4

6

R275

C330

C131

R64

R6 C11

C4

R49

2

C366

R310

C325 R346 C64

C130

C503

R313

C316

R92

R4

R11

R347

R91

C129

C75

90

1

2

C132

L17

R235

91

120

7

C329

C91

R312

R256

R254

R253

R285

CP32 CP33

3 R93

C88

5

6

C134

1

R5

R16

R15

C61

CN15

4

R94

R97

L66

R45 R47

Q16

C133

L18

R62

R61

C89

4

C90

L9

R98 R341

L15

C19 D8

R96

C76

L29

C137 C138

R345

C159

C17

C18

D9

C136

L8

Q2

L28 R95

C142

R102

C502

R46

C14

C501

C15

C145 C141

C500

C135

C148

L35

R103

C158

R110

L32

D18

D19

R101

C152

S

R99

G

L40

D10

C153

R104

R291

R111

L38

D20

C94

L19

L22

C163

L20

C160

D

R12

R100

Q17

C162

R290

L21

C98

C92

D21

C504

L41

D13

D12

C93

D17

C95

C97

C99

C101

L23

3

C96

C100

D5

E

C179 C124

+

10

C177

C219

J72-0883-09 (A/3) 11

11

Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC4 10E Q5 3N Q33 9N D9 3M D21 3H D36 9D IC5 10K Q9 4N Q52 7G D10 3G D22 10J D73 7N IC8 7E Q10 5N Q58 6L D12 3G D24 8I D74 11I IC12 6B Q11 6M D1 3R D13 3G D27 9J D79 11I IC16 8L Q16 4L D2 3R D17 3F D30 8N Q1 4P Q17 3J D5 2Q D18 2L D32 8M Q2 3O Q29 10J D6 3Q D19 2K D33 8N Q3 3P Q30 8J D8 4M D20 3I D35 7N

12

13

46 14

Component side Layer 1 Layer 2 Layer 3 Layer 4

12

Foil side 13

47 14

A

1

2

B

C

D

E

TH-K2AT/K2E/K2ET

F

G

H

I

J

PC BOARD

TX-RX UNIT (X57-674X-XX) (B,C/3) Component side view (J72-0883-09 B,C/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

3 MIC1

MENU

+

–

D42

4

1/F

5

2/VFO

3/MR

D43

F/CALL

D46

4

5

6

VFO

7

8

9

MR

6

7

D47

D44

8

*

0

#

CALL

9

J72-0883-09 (B/3) 10

MONI

LAMP

S7 PTT

11 J72-0883-09 (C/3)

Ref. No. Address D42 4D D43 5D D44 8D D46 5G D47 8G

12

13

48 14

Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side

A

B

C

D

E

PC BOARD

F

G

H

I

J

TH-K2AT/K2E/K2ET

TX-RX UNIT (X57-674X-XX) (B,C/3) Foil side view (J72-0883-09 B,C/3) 0-11 : K,K2 0-21 : M,M2 2-71 : E 2-72 : E3

1

2

3

CN8 C243

–

14 KIN3 KIN0 KIN2 GND MIG 8M 2 IM

+

KYO2 13 KYO1 KYO0 LAMP KIN4 KYO3 KIN1 1

Q50 G D S

R336

4

5

R337

6

7

R230

8

9

J72-0883-09 (B/3) 10 2 KIN4

KYO1

6 GND

PTT 1

BL 5

KYO2

D48

D49

CN7

11

J72-0883-09 (C/3)

Ref. No. Address Q50 3I D48 11C D49 11B

Component side

12

Foil side

13

Layer 1 Layer 2 Layer 3 Layer 4

49 14

A

B

C

D

TH-K2AT/K2E/K2ET

E

SCHEMATIC DIAGRAM

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

1

MOD VOLIN

MOD VOLIN

5MS

5MS 5T

NAR TO QT/DQT

NAR TO QT/DQT 5R 5C ENCA ENCB

ENCA ENCB

8

B30-2157-05 100

D40

R171

R226

220

Q47 RN1701

7

* C321

R167 180k

120k

9

R168

R324

180k

47k

C212 0.012u

0.047u

6

*

GND

820k

10

V+

2200p

5

R159

820k

4

C320

C339

11

C331 1000p

TX/BUSY LED SW

C349 0.1u

C290 1000p

C291

* R258

NOAA

* Q59 5MV SIGIN

WX DETECTION AMP

6

82p

5

R164

100k C202

GND

270p

C210

0.01u

C209

1000p

10k(D)

T:4.96V R:0V

REM

BTEMP CHARGE

RB521S-30 1000p C281

C207

0.01u

220k

R179

39k

R180

DTMF/1750

R181

C226 0.1u

470

R160

4.7k

C222

0.01u

10k

VCC

270k R185

C232

1u C230

10

R207

5

1k

R223

R224

220k

18k

C257

AF AMP

R209 100k

C258

DTMF/BEEP

0.1u

1000p

4

C256

15

RIPPLE

1000p

10u10

VIN

C255

1u

R206

NF

7.07V

2 3

PRE-GND 7 6

1

R208

1

PW-GND

10u10

100

TA7368F

POUT

DTMF/BEEP/1750/W-ALT F1

+B 5C/5R/5T AVR 13.58V

Q36 NI-MH TEMPERATURE DETECTION

C279 R216

10k

470k

D34 820

R217

1000p

C280 1k

8V Q37

Q38 2SC4617(R)

Q36 2SJ347

7.07V

AF AMP/ LAMP AVR

4.80V

R335

10k

R215

R214

Q35 2SK1830 DC IN DETECTION

Q37 2SB1184(Q,R) 1000p

F3 0.5A

0

D36

D24 VOX DETECTION RECTIFICATION MICM

R218

1u

RB521S-30 C282 1000p

D27 MIC ALC RECTIFICATION

2.5A

D35

C286

VOUT

IC4 XC6202PB52FR

GND

0.1u

R177 C223 100k 33k

TH4 2.2u4

R353

C227

68k

R186 R205

R354 0 C249

C248

C253

1 VSS

2

3 VIN

1000p

Q33 OPERATION SW

1000p

MA742

PHASE

Q31 Q56 OPERATION SW

D33,35,36 REVERSE CURRENT PREVENTION

1000p

11.5V AVR

4

Q34 2SK1830

1000p C224

R176 1SS388

180k D26

R204

C247

0.1u

47k

C284 C285 1000p

0.1u

8 C252

11.45V

470k

D31 DA221 CONSTANTCURRENT CIRCUIT

820k

R173

1000p

REM VOLOUT

C239 R202

13.43V

0.1u

9

RB051L-40

R211

Q30 2SC4617(R)

D24 C229

10

100p

C353

0

VOX DETECTION AMP

C228

IC6 L49

22k

12

R178

RB706F-40

1000p

15

R210

1u

D27

D33

C283

10k R212

C271

1000p 470p

D80 REVERSE CURRENT PREVENTION

R332

CHARGE SW

C272

470k

C225

3.23V

Q56 CPH3417

Q31 2SK1830

R175 2.2k

MICM RXD PTTE IM MIG TXD SPM VOLOUT

SP MUTE SW

1000p

Q33 2SB1184(Q,R)

X57-674 1/5

D25 MA2S111 R203

C506

D30 RB521S-30

50

D22 1SS361

R349 0

1u REVERSE CURRENT PREVENTION

33k

1k

SP MUTE SPEED UP

0.015u

R183

4.7k

D32 RB051L-40

1000p D80 RB521S-30

V+ 5

MIC MUTE CONTROL

C352

C270 1000p

4

MIC MUTE SW Q29 2SC4919 R182

D26 C246 DISCHARGE

100u10

C338

7

1

0.1u

10k

L50

BATTERY TERMINAL

2

0.01u

1k

REVERSE CURRENT PREVENTION

6

0.01u

PTTE

C206

1k

IC5 NJM2107F

R201 C242

R200

13.8V

DC IN

1000p

10k

1000p

100

C246

J2

0.047u

C218

R193

1.8k

C237

C238

R196

R199 1000p

C240

* C517 CN2 1 SPK 2 SPG

SP 8 OHM

R195

10k

R198

SPG REM/TXD SPK AFO

SP

0.047u

IM MIG TXD

C241

J4

3

D74 DA221

100

* C512

* C511

5

C221

HPF

-t

R197

5MS

C219

RXD

10k

PTT MIC IM

MIC

D79 DA221

R194

1000p

J3

10u10

1000p 5MS

C231

R192 470

0.047u

C358

15k

D74,79 LIMITER

C505

560k

CN1

R161

0.047u

4700p

C250

47k

1000p

R191

47k

C276

R190

5MV C205

C220

R213

1

0.01u

4.7k

GND

4

0.01u

R272

2

R174

3

R162

C236

5MV VOLIN VOLOUT

1k

4

100k

R273

C197

6800p

C196

WIDE/NARROW CHANGEOVER SW C235

3

180k

4

C208

1200p R156

1000p

5

ENCB

560k

7

V+

MAZS0270H

6

R163 8

2

R152

W/N

GND

6800p

R155 Q27 2SK1830

MAX DEV ENCA

1 C201

R169

VR5 50k

1u

MIC AMP IC16 NJM2904V

100k(D)

470

C198

1k

5T

18k

680

0

4.7u6.3 ROTARY ENCODER & VOL KNOB

R153

470

TONE REM VOXIN

T:4.92V R:0V

R146

150k

R147

R330 R151

100k R137 150k

R144

4.7k

DCS BAL

-t

C193

100k

4.7k

R149

MOD VOLIN 5MS ENCB ENCA NAR

470

R145

4.7k

R143

47k

180k

3

VR6

TH3

18k

R148

R141

10u10

R142

C195 R140

T0

RXLED

1000p

R344

*

BUSY LED

T:3.29V R:110mV

T:73mV R:3.39V

R158

330k

C204

R165

* R257

56k (D)

4.7u6.3

C213

12

330k 120p

10k

3

C203

* R264

R166

13

C211

47k

R260

WX1050Hz * C350

R172

* R261

14

2

* R259

C351

0.01u

1

2

TX LED

R157

0.033u

5R

CTCSS/DCS/WX FILTER IC17 NJM2902V

R170 47k (D)

B30-2156-05 R227 D41

5MS 2.08V

T:0V R:4.89V

AVR CONSTANTVOLTAGE

4.31V Q38 Q37 OPERATION SW

RXD PTTE IM MIG TXD SPM 5C/5R/5T AVR 8V AFAMP 5M BTDET DCDET +B BTEMP CHARGE

F

G

H

I

J

TH-K2AT/K2E/K2ET

SCHEMATIC DIAGRAM TX-RX UNIT (X57-674X-XX)(A/3) MOD VOLIN

MOD VOLIN

5MS 5T

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV 5MV 5M

+B NAR TO QT/DQT 5R 5C ENCA ENCB

ENCA ENCB

SEG30

SEG31

36

35 SEG30

SEG31

SEG28

SEG29

34 SEG29

SEG27

33 SEG28

SEG26

32

31 SEG26

SEG27

SEG24

SEG25

30

29 SEG24

SEG25

SEG22

SEG23

28 SEG23

SEG20

SEG19

SEG18

SEG17

SEG16

SEG21

SEG22

27

SEG21

26

SEG20

25

SEG19

24

SEG18

23

22 SEG17

SEG16

SEG14

SEG15

21

20

SEG14

SEG15

SEG12

SEG13

19

18

SEG12

SEG13

SEG10

SEG9

SEG11

17

SEG11

16

15

SEG9

SEG10

SEG7

SEG5

SEG8

14

13 SEG8

SEG7

12

SEG4

SEG3

SEG6

SEG6

11

SEG5

10

9

SEG3

SEG4

SEG1

SEG0

SEG2

8

SEG2

7

SEG1

6

COM2

COM1

COM3

SEG0

5

COM3

4

COM2

3

2 COM1

RXLED

COM0

1

COM0

LCD (B38-0881-05)

NOAA TEMP SMV SQV 5MV

5MV SIGIN

5MS SW LAMP

TONE REM VOXIN R282

R283

0

0

R342

0

R343

0

5C SW VOX 5R SW 5T SW

62

31

32

33

SEG14

SEG14

SEG15

34

35

36

SEG15

VSS

C0R1

ENCA

5MS

ENCB

37 DVCC

DVSS

38

39 DTMF/BEEP

40

TONE

41

42

AVRH

AVCC

43

44 AVRL

REM

AVSS

45

46

47 SIGIN

48 SQ

SM

VOXIN

49

50

51

52 BATT

THERM

53

54 VCC

LAMP

C332 0.1u

C335 0.1u

0.1u

BTEMP

55

56

57

58

59

COM2

CHARGE

61

AFAMP

CP31 3.9k

NAR

COM3

COM1

COM2

COM0

60

COM1

C336

4.7k

R323

BATT COM0

30 SEG13

COM3

SEG12

VSS

SEG11

SEG16

SEG10

63

28

64 SEG16

27

65 SEG17

26 SEG17

SEG9

66 SEG18

25 SEG18

SEG8

67 SEG19

24 SEG19

SEG7

68 SEG20

23 SEG20

SEG6

69 SEG21

22 SEG21

SEG5

70 SEG22

21 SEG22

SEG4

71 SEG23

20 SEG23

SEG3

72 SEG24

19 SEG24

SEG2

73

18 SEG1

NC

74

17 NC

SEG0

75 SEG25

MPU

FINAL

SEG25

76 SEG26

SEG26

SEG28

RXD

SEG31

SPM

V0

AFM

V1

VCC

V2

KAPC

V3

BPF/APC

0

47k

R326

R277

84 85 HST(VCC) MD2

EEPCS

MD1

EEPDI

88 89

SEG4 SEG3 SEG2 SEG1 SEG0

5M

14

R318

13

1k

PTTI

4.83V

9

R313

8

3.3k

6

R310

5

3.9k

BPF/APC

4

EEPCS

3

EEPDI

2 MD0

120

119

VSS

KOUT3

118

1

BTDET

CLOCK

KOUT2

117

KOUT1

5T

KOUT0

116

115

5R

SHIFT

113

114

NOAA

112

MICM

111

TYPE

VUKEY

110

109

KIN3

KIN4

108

107

KIN2

106

105

104

KIN1

KIN0

103

102

PLLLD

PLLEN

101

BSFT

RXLED

99

100

INTDW

97

98

PWRSW

INTUP

96

95

VCC

94

X1

93

92

91

X0

VSS

RESET

C359

DCDET

DATA

90 47k

SEG5

VOX

87

R275

SEG6

7

86

47k

R276

SEG7

16

10

83

0.1u

SEG8

11

82

MICM

SEG9

12 TXD

SEG30

81 SEG31

SEG10

PTTE

SEG29

80 SEG30

SEG11

PTTI

79 SEG29

SEG12

5C(SAVE)

90522BPFFG139 SEG27

78 SEG28

SEG13

15

IC8

77 SEG27

29

C360 0.1u

DTMF/BEEP

R325 47k

INT0 PWR SW RESET

0 RXD PTTE IM MIG TXD SPM 5C/5R/5T AVR 8V AFAMP 5M BTDET DCDET +B BTEMP CHARGE

4.7k

R312

1k R253

CP32 1k

1k R254

CP33 1k

1k R256

CP34 1k

CP35 5p 0

R285

1k

R286

X3 7.982MHz

BEAT SHIFT SW

R235

5p C295

Q52 RN1107

47p

C294

ON:4.76V

1k

C293 +B

KOUT3 KOUT2 KOUT1 KOUT0 VUKEY TYPE KIN4 KIN3 KIN2 KIN1 KIN0 IM MIG 5C/5R/5T AVR 8V 5M +B

X57-674 2/5

K

L

M

N

TH-K2AT/K2E/K2ET

O

SCHEMATIC DIAGRAM

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

MOD VOLIN

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV 5MV 5M

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV

C316

1

5T SW

Q55 CPH3317

1000p

C347 1000p

470k C345

R328

5R/5MV SW

10u10

5MS SW LAMP

T:4.95V R:0V

Q53 RN2701

VOUT

IC12 TK11250CUCB

NP

GND

CONT C346

T:0V R:4.90V

5.01V

C330

SI

IC15 AT25160N10SI27

T:4.95V R:0V

1000p C319

GND

4.66V

6

1k

5.0V AVR

Q57 RN2105

VIN

R236

Q41 RN2105

4

5

SCK

WP 4

5C SW

5MS SW 4.83V

C314

1k

1000p

R238

0.1u

1000p

6

C344

3

1000p

7

C355

VCC HOLD

0.01u

CS SO

2

C354

8

1

1000p

EEPROM

2

100k

3

R237

C348 1000p

5C SW VOX 5R SW 5T SW

100k

1u C299

330k

3

C307

1000p C306

0.1u C308

1000p C305

3 VDD

CD

4

NC

VSS

RESET 2

IC11 S-80930CNNBG80

IC10 S-80844CNNBB85

150u6.3

C303

1000p

C302

C300 1000p

C309 1u

OUT

4.4V VOLTAGE DETECTION

3.3V VOLTAGE DETECTION

BPF/APC

C310

C312

OUT

VDD

1000p R244

4 VSS

1u

3.9k

0.039u

C313

100k 1000p

0.039u

R252 C318

5M

R246

3.9k

1

INT0

4.92V

0

R248

330k

1

0.1u

4.69V R243

2

R242

C304

IC9 TK11250CM

5.0V AVR

6 CONT 1 VIN 5 GND1 2 GND2 4 NP 3 VOUT

+B

5MS

4.68V C311

1000p

1000p C298

330k

R240

R241

1k

0.1u

R239

C297

BATT

L63

EEPDI

10k

POWER SW

MA2S111

CN6 1

KIN4 2

2

KYO2 3

3

KYO1 4

4

BL

5

5

GND

6

6

150

R231

D72 MA2S111

D71 MA2S111

D70 MA2S111

SET

*

Q51 RN4902

1000p

MR

*

0

#

CALL

5M +B

Q50 2SK1830

BOARD

D42-44,46,47 KEY ILLUMINATION LED

KEY LED SW ON:4.78V

10KEY

B30-2205-05

9

R337

8

D46

7

* R230

VFO

D43 B30-2205-05

5C/5R/5T AVR 8V

* D44

F/CALL

6

* D47

3/MR

5

220 B30-2205-05

2/VFO

4

D42

R336

2

3

4

5

6

7

8

9

10

11

13

14

12 1/F

MENU

MIC1

470

CN8

C243

1

KIN1

TX-RX UNIT (X57-674X-XX)(B/3) CN9

1

IM 2

KYO3 3

8M 4

MIG

KIN4 5

6

LAMP

GND

KIN2 10

7

KYO1 11

8

KIN0 12

KYO0

KYO2 13

9

KIN3 14

LCD LED SW

KOUT3 KOUT2 KOUT1 KOUT0 VUKEY TYPE KIN4 KIN3 KIN2 KIN1 KIN0

X57-674 3/5

C516

* C514

INT0 PWR SW RESET

* C515

ON:6.90V

IM MIG

S7 S70-0485-05

CN7 1

PTT

MONI D48,49 LAMP

D48 B30-2237-05

D69 MA2S111

D69-72 REVERSE CURRENT PREVENTION

PTT

0 JUMPER

BIT0 R255

EEPCS

D65

BIT1 D64

MA2S111

BIT2

* D63

* D62

BPF/APC

* D60

KEY

BIT3

TYPE

TX-RX UNIT (X57-674X-XX)(C/3) 1000p

D62-65 MARKET CODE DETECTION

C317

D60 KEY TYPE DETECTION

R263

PTTI

LCD ILLUMINATION LED D49 B30-2237-05 PTT BOARD

P

Q

R

S

T

TH-K2AT/K2E/K2ET

SCHEMATIC DIAGRAM TX-RX UNIT (X57-674X-XX)(A/3) MOD VOLIN 5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV

5T +B

TEMP FINAL KAPC

CN15

* CN17

C55

L9 R18 10

82n

3.3k R17 C18 1000p

C17 1000p

1k

R20 C21

1

IC1 LMX2316TMX

VP

VCC2

16

4.7u6.3

1000p C41

C42

C43

0.01u

C44 100p

C45 100p

10p

C46 100p

22p

10p

C51

C52

X1 L77-1931-05

L64 4.7u

KAPC TEMP

10 5C

CP2 3.9k PLLEN DATA CLOCK PLLLD

1000p

C57

OUTPUT

FLO

CPO

2

3 FO/LD 14

13

LE

DATA 12

CLK

CE

11

15

4 GND2

FIN

GND1

5

6 FIN

VCC1

7

8 OSCI GND3 9

10

4.63V

VCC

0.01u C54

56k

C56 1000p

PLL IC

12.8MHz

R38

QT/DQT PLLEN DATA CLOCK PLLLD 5C

BPF/APC SQV SMV NAR 5R AFM VOLIN

R32

MA2S111 1k C40 0.1u

R36

RF AMP

4.45V

120k

D16

8p

Q6 2SC5488

1000p

C33

0.22u35

470

R24

4.7u6.3

C35

0.1u35

C34

0.01u C50 22p

VR1

GND

C20

C38

R37 56k

VC

R19 120k

18p

R35

500k

C22

C37 1000p

1.2k

FREQ

1.58V

C24

15n

1000p

D16 PLL LOCK DETECTION

BPF/APC

R15

47

C14 1000p

4.7k

R21

MA2S111

FINAL

SPEED UP

R30

2.2k

Q5 2SC5488

220

4.45V

L53 R31

15p RF AMP

R12

47

R10

0.01u

R9

270

L5

D7

1000p

C26 10u10

VCO SHIFT CONTROL SW

R348

12p

L8

C8

27p (G)

R22 C9

1000p C27

C25

C30 1000p

C11

SHIFT

Q4 2SC4617(R) RIPPLE FILTER

3.63V

1000p

R6 1k

CP1

R5 100k

2.7k

Q3 2SK1830

C15

0.5p (B)

1SV305

D6

C13

R8

100k

C6 1000p

0.1u

1k R4

VCO

10u C10

R7 47k

C3

D5 HSC277

Q2 2SC5488

27p (G)

C7 0.5p (B)

L6

C4

47n

L2

82n

1000p

C5

D2

D5 FREQUENCY SHIFT

L3

8.2k

C2 1000p

3p (B)

D1 1SV325

10u

L1 10u

RF AMP

R16 470

Q1 2SC5066(O)

150k

R14 3.3k

VCO MODULATION

R11

6.8k

120n

VCO FREQUENCY CONTROL

1SV325

C1

R13

0.01u

SHIFT

QT/DQT PLLEN DATA CLOCK PLLLD 5C TO 5MS MOD

SQV SMV NAR 5R AFM VOLIN

LV L68

D6

5.6k

C19 D1,2

CF1 L72-0968-05 450kHz T:0V R:4.63V

4.82V

W:111mV N:4.79V

5R R134 390k

C192

0.01u

0.72V C191 0.01u

0

1k

R133

L58 R188

SQV

SMV

IF AMP Q24 2SC5488

0.1u

C179

C178

0.01u

C177

47

R127

WIDE/NARROW CHANGEOVER SW

22u6.3

CD1 450kHz

TRIPLER

C190

820n

C183

0.1u

0.1u

C182

C180

2.2k Q23 KTC4082

0.01u

120p

R132

C188 24p

560n L46 100

24p L45

560n

IC3 TA31136FN

R130

MIXIN

2p C186

OSCIN

1

2 OSCOUT GND

16

15

N-REC

14

N-DET

13

IFOUT

RSSI

12

11

MIXOUT

3 VCC

4

5 IFIN

DEC

6

8

7 FILOUT

FILIN

9

QUAD

AFOUT

1800p

C172

0.01u

330k

0.53V

R189

27k R118

Q22 RN2105

2.7k 0.1u

3.3k

C187

(D)

R120

C124

R128

1.8k

C166

47

5.6k

AF MUTE SW

2.7k

2.7k C171

1.8k

R117

R124 3.3k

R123

R122 1000p

0.068u

R119

C194

0.068u

0.1u

R115

VOLIN AFM

C170

0.1u

C169

C167

BPF/APC SQV SMV NAR 5R

27k

120k

AF FILTER Q21 2SC4617(R)

Q20 2SK1830

FM IC

10

R116

180p

22p

R126 C175

560

R125

C174

0.1u

C176

R135

180p SQ FILTER

R131

4.76V

2nd L.O.

C189 1000p

C173 470k

C161

1000p

0.1u

C168

5R

5R

5R

BPF/APC

X57-674 4/5

U

V

W

X

TH-K2AT/K2E/K2ET

Y

SCHEMATIC DIAGRAM

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

R54 100

39p

22n

L56

33p

L14

C76

6.8n

C74

L15

56p

C72

C73

1000p

C71

0.1u

1000p L13

56n R56

R55

C329

1000p

DRIVE AMP

C327

1k

470

1u

L54

C69

R39

R41

L11 C70

Q11 2SK2596

10n

C75

10n

47n

L12

L55

0.1u

1000p

4p

82n

100 C67

12

1.30V

3.3k

D73

VOLTAGE DROP

Q10 OPERATION SW

MA2S111

1u

C66

C324

4.90V

R271

C326

R34

Q15 2SC4617(R)

22

R33

5R

18p

1000p

Q10 2SC4926YD

1000p

1k R52

DRIVE AMP

1.40V

R53

R42 100

82n L10 R50

470

R346 68

1000p C61

10k

R46

2.00V

R51

100

1000p 33

RF SW

1000p C64

HSC277

R49 330

5.6k

Q9 2SC5488 R347

R47

D9

R45

C68

C65 18p

RF AMP

HSC277

3.3k

12.46V

T:4.85V R:0V

TX PATH

270

D8

270

T:4.23V R:0V

RF SW

C325

5T +B

1

2

5T

5T

VGG VDD C137

12.29V

L23

9T

24p

(G)

C101

(G)

1000p

C92

HVC131

D13

OVER INPUT PROTECTION

3

R76 150k (D)

R86 5.6k

10k

-t

1000p TH1

MA8039 C117

10u4 D15

C116

1000p C118

4

APC OUTPUT VOLTAGE LIMITTER

1000p

0.01u

Q14 RN4902

APC

C115

C356

56k

1000p

1000p

MA2S111 C114

(D)

C110

R83

TEMP COMPENSATION

560

C112 1000p

5

100k D14

B+IN

R85

390k

1000p R84

B-IN

GND

R82

150k

1000p

A+IN

DC SW R81

6

C113

C109

1000p

150k

R79

R78

Q13 2SK1830

4

APC OUTPUT SW

7

BOUT

(D)

1000p

R75

100k (D)

V+

A-IN

VGG

R80 10k

AOUT

3

8

C111

0.39

+B

NJM2904V

1000p

IC2 1

27k

100p

2

C106

0.39 R72

C105

1000p

(D)

APC DIFFERENTIAL AMP

C108

R77 150k

R74 100k

(D)

* C510 R71

R70

0.39

C99

C95 D12

5T

D17

HSM88AS

D12,13 ANTENNA SW

FINAL

C107

HVC131

8p C93

1000p

C90

1000p

C91

C323 1000p

2.29V (HIGH POWER)

5T

ANT

R62 220 Q58 2SK1830

APC CIRCUIT OPERATION SW

9T

(B)

(B)

C97

9T

L19

220

(G)

12p

(G)

C100 7p

(G)

220n

XB15A709

L22

L21

9T 7T C96 12p C98 8p

C94 1000p

13p

56p

R61

L20

D10

L18

1000p C82

ANTENNA SW

12p

C89 1000p

C88

L17 18.5n

L16 0.1u

0.01u

C84

C83

1u

Q12 GATE VOLTAGE SW

C357

100p

C366

C503

R58 10 1000p C328

56k C78

12k R60

100p

56p CN10

R59

C135

L66

10p

T:0V R:0V

120n

12p

C136

Q12 2SK3476

POWER AMP

1000p

C138

5p

C85

22n

R64 0

L29

1u

L28 27n

KAPC

KAPC TEMP D14 REVERSE CURRENT PREVENTION

R95

D18,19

1st MIXER

RX BPF TUNING D20,21

C163

D47

D60

D62

D63

Q59

C320

C321

C350

C510

C511

C512

C514

C515

C516

K,K2

B30-2205-05

B30-2205-05

NO

MA2S111

MA2S111

2SK1830

8200p

8200p

0.1u

NO

NO

NO

NO

NO

NO

NO

2-71

TH-K2E

E

NO

NO

MA2S111

MA2S111

NO

NO

NO

NO

NO

100p

470p

470p

470p

470p

470p

470p

2-72

TH-K2ET

E3

B30-2205-05

B30-2205-05

NO

MA2S111

NO

NO

NO

NO

NO

100p

470p

470p

470p

470p

470p

470p

0-21

TH-K2AT

M,M2

B30-2205-05

B30-2205-05

NO

NO

MA2S111

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

R230

R257

R258

R259

R261

R264

R344

TH-K2AT

K,K2

220

56k

680

680k

47k

NO

100k

NO

2-71

TH-K2E

E

NO

NO

0

0

NO

0

NO

E23-1081-05

X57-674X-XX

2p (B) L40

68n 18n

C504 L41

1SV305

D44

TH-K2AT

0-11

5

C162 R291 47p (G)

0

R290 0

R111

D21

1.0M

22p (G)

C160

(B)

1000p

C141

C502 3p

(B)

0-11

X57-674X-XX

5R

0.01u

C132

5R

C159 2p

1000p

56

L38

1000p R104

C153

82n

1000p

RX 1st AMP

D20

C158

Q17 0 2SK1215(E)

1SV305 1.0M R110

R345

2.7k

R103

0

C152

L35 47

C148

22p (G) 82n 1SV305

1.0M D19

0.27V

27p (G)

RX BPF TUNING

R102

R101

C147

4.66V

C500 1.5p (B)

22p (G)

(B)

1.0M

82n D18

L32

R98 82k

R96 82k

1000p

C133

0.01u C134

330 R94

C131 0.01u

C130

1000p

47 R93

1000p

82k

R97

0

C501 1.5p

C142

C145

R341

11p

C129

R92 3.3k

L26

330

R100

2.42V

1000p

Q16 3SK318

1SV305 R99

4.71V

10p

C126

1.5p

220

C125

R351

0.01u

L27 680n

R88

470n

C128

R91 1k

XF1 L71-0619-05

R90 330

100k

2.68V 38.85MHz 1st IF

C517

CN17

2-72

TH-K2ET

E3

220

NO

0

0

NO

0

NO

E23-1081-05

0-21

TH-K2AT

M,M2

220

NO

0

0

NO

0

NO

NO

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).

X57-674 5/5

6

7

TH-K2AT/K2E/K2ET

SCHEMATIC DIAGRAM

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

4

Q33 OPERATION SW BTEMP CHARGE

5M +B

*

+B

0

#

CALL

Q50 2SK1830

BOARD

D73

39p

22n

C76

L56

C74

33p

L14

47n

0.1u

L23

9T

24p

(G)

C101

(G)

C99

C95

C97

(G)

12p

12p

(G)

L19

1000p

C92

HVC131

D13

D12

HVC131

8p

1000p

C93

R86 5.6k

-t

1000p TH1

1000p C118

10u4 D15

MA8039 C117

C116

10k

TEMP COMPENSATION

560

APC OUTPUT VOLTAGE LIMITTER

1000p

C115

Q14 RN4902

APC

MA2S111 C114

0.01u

56k

100k D14

C356

R83

1000p R84

1000p

C113

(D)

C110

1000p

C112 1000p

R82

R78

R79

D14 REVERSE CURRENT PREVENTION

100k

R95

D18,19

1st MIXER

RX BPF TUNING

2p (B) L40

68n 18n

C504 L41

C160

27p (G) 1SV305

47p (G)

0

R290 0

C163

R111

D21

1.0M

C162 R291

1000p

C141

(B)

1000p

0.01u

C132

C502 3p

(B)

22p (G)

C158 82n

56

L38

1000p R104

C153

D20

RX 1st AMP

C159 2p

1SV305 1.0M R110

2.7k

R103

R345 Q17 0 2SK1215(E)

1000p

47

0.27V

0

C152

L35

22p (G) 82n

C148

R101

C147

D20,21 RX BPF TUNING

R102

1.0M D19

(B)

22p (G)

4.66V

C500 1.5p

1SV305

(B)

1.0M

82n D18

L32

1000p

R98 82k

R96 82k

C133

0.01u C134

330 R94

C131 0.01u

C130

1000p

47 R93

1000p

82k

R97

0

C501 1.5p

C142

C145

11p

C129

R92 3.3k

L26

R341

R100

2.42V

1000p

Q16 3SK318

1SV305 R99

4.71V

330

C188 24p

5R

IF AMP Q24 2SC5488

D44

D47

D60

D62

D63

Q59

C320

C321

C350

C510

C511

C512

C514

C515

C516

0-11

TH-K2AT

K,K2

B30-2205-05

B30-2205-05

NO

MA2S111

MA2S111

2SK1830

8200p

8200p

0.1u

NO

NO

NO

NO

NO

NO

NO

2-71

TH-K2E

E

NO

NO

MA2S111

MA2S111

NO

NO

NO

NO

NO

100p

470p

470p

470p

470p

470p

470p

2-72

TH-K2ET

E3

B30-2205-05

B30-2205-05

NO

MA2S111

NO

NO

NO

NO

NO

100p

470p

470p

470p

470p

470p

470p

0-21

TH-K2AT

M,M2

B30-2205-05

B30-2205-05

NO

NO

MA2S111

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

X57-674X-XX

5R

0.72V

R230

R257

R258

R259

R261

R264

R344

0-11

TH-K2AT

K,K2

220

56k

680

680k

47k

NO

100k

NO

2-71

TH-K2E

E

NO

NO

0

0

NO

0

NO

E23-1081-05

X57-674X-XX

C191 0.01u

0

C192

0.01u

13p

220n C90

1000p

C91 5

R85

390k

R132

R134 390k

1k

R133

L58 R188

C72

C73

MA2S111

9T

C88

L18

1000p C82

56p

L16 0.1u

0.01u

C84

C83

R80 10k

R81

C111

B+IN

6

1000p

B-IN

GND

DC SW

7

BOUT

A+IN

VGG

C517

CN17

2-72

TH-K2ET

E3

220

NO

0

0

NO

0

NO

E23-1081-05

0-21

TH-K2AT

M,M2

220

NO

0

0

NO

0

NO

NO

0.1u

C179

CD1 450kHz

OVER INPUT PROTECTION

HSM88AS

2.2k Q23 KTC4082 TRIPLER

C190

820n

C183

120p

0.1u

C180

D17

APC OUTPUT SW

27k

(D)

C109

1000p

150k

V+

A-IN

4

10p

C126

1.5p

220

L27 680n

R88

470n

C128

R91 1k

XF1 L71-0619-05

C125

R351 4.82V

1000p L13

1000p

0.1u

C327

1k

470

R56

R55

C71

L54

R54 100

56n

4p 1u 1u C357

C366

C503

C323 1000p AOUT

3

8

(D)

1000p

R75

NJM2904V

330k

C189 1000p

560n L46 100

24p L45

560n

IC3 TA31136FN

R130

MIXIN

2p

C186

OSCIN

1

2 OSCOUT GND

16

15

MIXOUT

3 N-REC

AFOUT

0.01u

ANT

(B)

(B)

0.53V

0.01u

SQV

Q22 RN2105

C178

C69

R39

R41

L11 C70 100p

100p

56p C85

R58 10 R64 0

1u

1000p C328 R77 150k

1000p

C105 0.39 C106

0.39 R72

R71

0.39

R70 C107

4.7u6.3

1000p C41

1 2

1000p

IC1 LMX2316TMX C42

14

FILIN

27k 1800p

C172

C171

1000p

C187

R189

27k R118

3.3k

C166

R131

4.76V

47

5.6k R115

VOLIN

470

22p

R126 C175

560

R125 W:111mV N:4.79V

270

270

82n

100 R53 1000p

C67 22

1u

C66

C324

1k R52 R33

* C510

1k

R20 C21

1000p

1 FLO

CPO

VP

VCC2

16 0.01u

C43

56k C78

12k R60

R59

4.7k

R21

MA2S111

D7 2

3 FO/LD

LE

14

13

15

4 GND2

GND1

5 FIN DATA 12

CLK 11

CE

IC2

5R

Note : The components marked with a dot ( ● ) are parts of layer1.

5R

KEY LED SW ON:4.78V

10KEY

KEY ILLUMINATION LED

R128

1.8k

2.7k WIDE/NARROW CHANGEOVER SW

(G)

220

9T C100 7p

KAPC

0.01u

(D)

R120

XB15A709

L22

L21

9T 7T C96 12p C98 8p

C94 1000p

D12,13 ANTENNA SW

2.68V

2nd L.O.

FM IC

R124 3.3k

0.01u

MR

2.7k

2.7k

C177

9

1.8k

47

8

180p

R123

R122

R127

7

5M

D42-44,46,47

AF MUTE SW

0.1u

VFO

0.068u

R119

R117

0.1u

C124

6

AFM

5

B30-2205-05

4

MENU

5C/5R/5T AVR 8V

R337

CN8

Q20 2SK1830

C170

0.068u

C167

D46

F/CALL

C169

C194

1000p

C243 3/MR

MIC1

* R230

1

2

3

4

5

6

7

8

9

10

11

12

2/VFO

100p

38.85MHz 1st IF

C173

120k

AF FILTER Q21 2SC4617(R)

22u6.3

* C516

*

CN9

0.1u

KIN1 1

IM 2

KYO3 3

8M 4

MIG

KIN4 5

6

LAMP

GND

KIN2 10

7

KYO1 11

8

KIN0 12

KYO0

KYO2 13

9

KIN3 14

1/F

R116

BPF/APC SQV SMV NAR 5R

5C/5R/5T AVR 8V

KOUT3 KOUT2 KOUT1 KOUT0 VUKEY TYPE KIN4 KIN3 KIN2 KIN1 KIN0 IM MIG

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

* D44

IM MIG

Q51 RN4902

R61

L20

D10

5R

C174

LCD LED SW

4.7k

KOUT3 KOUT2 KOUT1 KOUT0 VUKEY TYPE KIN4 KIN3 KIN2 KIN1 KIN0

C515

* C514

INT0 PWR SW RESET

1000p

C26 10u10 6 FIN

VCC1

7

8 OSCI GND3 9

10

C44 100p

C45 100p

C46 100p

10p

10p

C52

C57

56k R38

C56 1000p

ON:6.90V

ANTENNA SW

KAPC TEMP

R90 330

0.1u

SET

APC DIFFERENTIAL AMP

C108

150k

5R

PTT BOARD

C89 1000p

R62 220

T:0V R:4.63V

B30-2237-05

VCC

B30-2237-05

D49

N-DET

D48

Q12 GATE VOLTAGE SW

CF1 L72-0968-05 450kHz

13

6

(D)

Q13 2SK1830

5T

0.1u

6

LCD ILLUMINATION LED

4

GND

R74 100k

100k (D)

D48,49 LAMP

6.8n

R76 150k (D)

+B

MONI

5

5

8p

PLLEN DATA CLOCK PLLLD

IFIN

5

1000p

470 R51

L10

R42 100

82n

R49 330 1000p 33 R50

C138

82n L9

12p

1000p

3.3k R17

R18 10

C18 1000p

C17 1000p

C135

L66

120n

5.6k R15

R16 470

R14 3.3k

120n

47

C14 1000p

R12

47

R10

0.01u

R9

270

L5

10u C10

CN10

RF AMP

CP2 3.9k

DEC

4

BL

22p

RSSI

KYO1 4

4.7u

IFOUT

D69-72 REVERSE CURRENT PREVENTION

3

PTT

C51

12

EEPDI

1

KYO2 3

X1 L77-1931-05

L64

11

EEPDI

EEPCS

C360 0.1u

R312

CP32 1k

CP33 1k

1k R253

1k

1k R254

R256

CP34 1k

T:0V R:0V

L17 18.5n

FINAL

APC CIRCUIT OPERATION SW

C182

EEPCS

2

OUTPUT

VOLTAGE DROP

Q12 2SK3476

POWER AMP

C20 Q6 2SC5488

L15

56p

12.29V

5p

R19 120k

KAPC TEMP

SMV

3.9k

BPF/APC

CN7 1

12.8MHz GND

C24

15n

C329

1000p

DRIVE AMP

5T

10 5C

VCC

C176

5

BPF/APC

4.63V

6

R310

CN6 1

KIN4 2

PLL IC

R135

6

PTT

S7 S70-0485-05

R32

470k

3.3k

FINAL

C22

7

R313

8

TYPE

13

5p

27n

4.45V

MA2S111 1k C40 0.1u

500k

C55

MARKET CODE DETECTION

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

QT/DQT PLLEN DATA CLOCK PLLLD 5C

KEY TYPE DETECTION

BPF/APC SQV SMV NAR 5R AFM VOLIN

D62-65

1000p C27

C25

C11

C30 1000p 0.22u35

C33

4.7u6.3

1u C299

1000p

470

R24 C34

C307

C35

C306

0.1u C308

1000p

1000p C305

0.1u35

100k

R6 1k

R5 100k

2.7k 3

1000p

1000p C298

R240

CP1 1 VSS

NC

C304 150u6.3

C303

C302

1000p

C300 1000p

OUT

1000p

VDD

2

6 CONT 1 VIN 5 GND1 2 GND2 4 NP 3 VOUT

IC9 TK11250CM

D60

R336

R286

L8

C8

27p (G) 27p (G)

R22 C9

1SV305

D6

R8

100k

C6 1000p

C3

8.2k

3p (B)

C7 0.5p (B)

10u L6

0.1u

1k R4

L2

47n

1000p

R328

470k C345

10u10

C330

1000p C319

C314

1000p

C5

D2

C1

1SV325

Q53 RN2701

0.01u

SHIFT

QT/DQT PLLEN DATA CLOCK PLLLD 5C TO 5MS MOD

IC12 TK11250CUCB

VOUT 6

SQV SMV NAR 5R AFM VOLIN

1

2

NP

CONT VIN 4 1000p

1000p

C344

C355

0.01u

C346

0.1u

C309 1u

4

D16

R37 56k

L63

220 B30-2205-05

RXD PTTE IM MIG TXD SPM 5C/5R/5T AVR 8V AFAMP 5M BTDET DCDET +B BTEMP CHARGE

CP35

1k 0

RXD PTTE IM MIG TXD SPM 5C/5R/5T AVR 8V AFAMP 5M BTDET DCDET +B BTEMP CHARGE

1k

C137

22n

2.29V (HIGH POWER)

0.01u

120k

Q11 2SK2596

10n

C75

10n

3.3k

Q58 2SK1830

C50 22p

R36

4.83V

9

BTDET

120

VSS

119

118

KOUT3

KOUT2

117

KOUT1

5T

KOUT0

116

115

5R

SHIFT

113

114

NOAA

112

MICM

111

TYPE

VUKEY

110

109

KIN3

KIN4

108

107

KIN2

106

KIN1

105

104

103

KIN0

PLLLD

PLLEN

102

BSFT

101

DCDET

RXLED

99

100

INTDW

98

97

INTUP

PWRSW

95

VCC

94

X1

X0

93

92

91

BPF/APC 1.58V

D42

D34 820

R217

C294

C279

1000p 1000p

C280 1k

Q52 RN1107 BEAT SHIFT SW

R235

0

X3 7.982MHz

47p

R285

Q38 Q37 OPERATION SW

5M PTTI

INT0 PWR SW RESET

8V

4.31V

VSS

47k

R275 ON:4.76V

L29

C38

3.3V VOLTAGE DETECTION

BPF/APC

* D47

Q36 NI-MH TEMPERATURE DETECTION

Q36 2SJ347

4.4V VOLTAGE DETECTION

L12

L55

VDD L28

10p

18p

D16 PLL LOCK DETECTION

1000p

1.30V

5T

1000p

180p

7.07V

AVR CONSTANTVOLTAGE

5M PTTI

C293

AF AMP/ LAMP AVR

4.80V

CD

12

Q10 OPERATION SW

4.45V

C37 1000p

SQ FILTER

Q37

Q38 2SC4617(R)

R335

4.7k

DC IN DETECTION

10k

470k

10k

R215

C276

0.5A

Q37 2SB1184(Q,R)

3 VDD

C326

VGG

SPEED UP

1.2k

0.1u

+B

Q5 2SC5488

220

R30

2.2k

DTMF/BEEP

5C/5R/5T AVR 13.58V

F3

96

10 R208

18k

DTMF/BEEP

CLOCK

OUT

IC11 S-80930CNNBG80

IC10 S-80844CNNBB85

D43 B30-2205-05

D36 RB521S-30 1000p C281

R272

1u

VOUT

RB521S-30 C282 1000p

220k

C258

+B

Q35 2SK1830

D35

C286

GND

11.5V AVR

R224

F1

1 VSS

2

3 1000p

1000p

100k

R223

5p C295

AF AMP

0

C285 1000p

D33,35,36 REVERSE CURRENT PREVENTION

1k

R209

DTMF/BEEP/1750/W-ALT

R214

C284

5

C255

15

R207

2.5A

11.45V

470k

VIN RIPPLE

R206

10u10

R213

13.43V

R211

1000p

NF

4

3.9k

2

C359 0.1u

3

1k

R325 47k

6

2

1000p

100p

7.07V

13

3.63V

8

DATA

R348

18p

R271

R34

Q15 2SC4617(R)

5T

C136

Q4 2SC4617(R) RIPPLE FILTER

FILOUT

EEPDI

MD0 RESET

1000p

7

1000p

C353

VCC

1

Q10 2SC4926YD

4.90V

15p RF AMP

0.5p (B)

QUAD

MD1

90

C256

100 1u

C253

22k

12

1

PW-GND PRE-GND

C252

Q31 Q56 OPERATION SW

RB051L-40

POUT

8 PHASE

C250

R354 0 C249

R205

9

1SS388

180k D26

R204

C248 R349 0

10

10u10

L49

TA7368F

R318

3

2

150

EEPCS

MD2

C15 12p

L53 R31

4 VSS

RESET

VOX

88

IC6

14

4

47k

Q2 2SC5488 C13

9

HST(VCC)

87

1

INT0

R231

47k

86

RF AMP

VCO

10

BPF/APC

HSC277

C161

KAPC

V3

1000p

150k

330k

0 JUMPER

0

47k

V2

R7

VCO SHIFT CONTROL SW

VC

7

85

D5

1000p

VCC

R246

3.9k

R255

MICM

R276

MICM

3.23V

100

DRIVE AMP

1.40V

5R

1000p

AFM

V1

84

C4

0.01u C54

V0

83

R248

D72 MA2S111

D24 VOX DETECTION RECTIFICATION

SEG0

16

10

R11

6.8k

82n

0.1u

SPM

82

L3

Q3 2SK1830

SHIFT

C168

SEG31

81 SEG31

R326

270k

D27 MIC ALC RECTIFICATION

R277

MA742

C232

0.1u

0.1u RB706F-40

R185

1u

C229

C228

C230

100k 33k

TH4 2.2u4

R353

C227

68k

R186

D24

D27

SEG1

11 RXD

4.69V

SEG2

12 SEG30

GND

3 TXD

C2 1000p

R243

10k

PTTE

1000p

1000p

SEG28 SEG29

78 SEG28

D1 1SV325

VR1

R263

PTTI

L1

FREQ

5C(SAVE)

90522BPFFG139 SEG27

Q1 2SC5066(O)

10u

SEG3

15

IC8

SEG26

77 SEG27

C347

SEG4

C317

76 SEG26

R13

R35

POWER SW

FINAL

Q55 CPH3317

330k

R244

SEG5

MA2S111

SEG0

MPU SEG25

SEG6

D71 MA2S111

DTMF/1750

R181

17 NC

75 SEG25

D6 VCO MODULATION

D5 FREQUENCY SHIFT

1u

18

SEG7

D70 MA2S111

180k

R162

19

T:4.95V R:0V

R242

0

BIT0

SEG1

5.01V

4.92V

SEG8

D69 MA2S111

0.01u

C207

SEG2

NC

L68

5T SW

0.1u

SEG9

14

39k

R180 220k

R179 C226 0.1u

VOX DETECTION AMP

0.1u

SEG24

20

74

470

R160

4.7k

C222

10k

R177 C223

1000p C224

R174 R176

SEG3

73

SEG30

D33 15

C283

Q34 2SK1830

820k

R173

C218 C247

0.1u

47k

D80 REVERSE CURRENT PREVENTION

D31 DA221 CONSTANTCURRENT CIRCUIT

SEG24

33k

0.01u

470k

VIN

CHARGE SW

SEG23

21

80

Q56 CPH3417

Q31 2SK1830

IC4 XC6202PB52FR

R210

SEG4

72

Q30 2SC4617(R)

MICM RXD PTTE IM MIG TXD SPM VOLOUT

SP MUTE SW

1000p R332

Q33 2SB1184(Q,R)

10k

1000p

REM VOLOUT

1000p

1000p

C239 R202

SP MUTE SPEED UP

MA2S111 R203

C506

D30 RB521S-30

0

R183

D22 1SS361

D25

D32 RB051L-40

1u

R178

1u

SEG22

89

1000p D80 RB521S-30

R212

1k

D26 C246 DISCHARGE

REVERSE CURRENT PREVENTION

C225

SEG5

79

4.7k

C352

C338

R175 2.2k

22 SEG21

71 SEG23

SEG29

R201

C242

10k

V+ 5

MIC MUTE SW Q29 2SC4919 R182

0.1u

R193

1.8k C238 1000p

C241

1000p

C240

1k

4

23

SEG10

D65

24

5.0V AVR

C310

25

SEG11

BIT1

26

SEG12

D64

SEG6

T:0V R:4.90V

D1,2 VCO FREQUENCY CONTROL

5R/5MV SW

SEG13

MA2S111

SEG7

Q57 RN2105

T:4.95V R:0V

4.68V

C312

SEG19 SEG20

LV

C311

0.039u

SEG8

330k

BIT2

SEG9

SEG18

1k

BIT3

SEG17

27

R241

* D63

SEG10

R239

* D62

SEG16

29 28

70 SEG22

4.66V

5MS

SEG11

69 SEG21

BATT

C313

SEG20

BATT

0.039u

SEG19

5C SW VOX 5R SW 5T SW

C297

32

33

34

35

36

31 SEG14

SEG15

VSS

C0R1

ENCA

5MS

ENCB

DTMF/BEEP

37

40

TONE

41

42

AVRH

AVCC

43

44 AVSS

AVRL

45

REM

46

SIGIN

SQ

47

48

SM

49 VOXIN

THERM

50

51

52 BATT

BTEMP

38

4.7k

R323 53 VCC

54

55

56 LAMP

AFAMP

CHARGE

57

58

59

VSS

67

C206 0.015u

C354

35

36 SEG31

SEG30

34 SEG29

33 SEG28

31

32 SEG27

SEG26

29

30 SEG25

SEG24

28 SEG23

27 SEG22

26 SEG21

25 SEG20

24 SEG19

23 SEG18

21

22 SEG17

SEG16

20 SEG15

18

19 SEG14

SEG13

SEG12

17

SEG11

16

15

13

14 SEG9

SEG10

SEG7

12

SEG18

1000p

SEG30

SEG31

SEG28

SEG29

SEG27

SEG26

SEG24

SEG25

SEG22

SEG23

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG14

SEG15

SEG13

SEG10

SEG12

SEG11

SEG9

SEG7

SEG8

SEG5

SEG4

SEG3

SEG6

SEG6

11

SEG5

10

9

SEG3

SEG4

SEG1

SEG0

SEG2

8

SEG2

7

COM2

COM1

COM0

COM3

5

4

3

2

6 SEG1

SEG8

SEG12

65 SEG17

1k

IC5 NJM2107F

MIC MUTE CONTROL

R200

100u10

C270 1000p

C271

1

10k

C246

L50

1000p

2

PTTE

10k

*

R198

C512

* C517

R199

13.8V

470p

3

HPF

-t

* C511

100

REVERSE CURRENT PREVENTION

C272

C221 0.01u

IM MIG TXD

CN2 1 SPK 2 SPG

BATTERY TERMINAL

R196

100

SPG REM/TXD SPK AFO

DC IN

C219 0.047u

D74 DA221

R195

R197

J2

C358 0.047u

RXD

10k

5MS

SP 8 OHM

D79 DA221

R194

PTT MIC IM

J4

C237

470

10u10

1000p

R192

5MS

C231

C505 0.047u

15k

D74,79 LIMITER

560k

47k

CN1

SP

30 SEG13

64 SEG16

R161

0.047u

1000p

47k

MIC

NAR

C197

C205

Q9 2SC5488 R347

2.00V

* CN17

C348

SEG14

63

T:4.96V R:0V

5C SW VOX 5R SW 5T SW

SEG15

COM3

5.0V AVR

5MS SW LAMP

KEY

4700p

1

J3

62

1k

Q41 RN2105

* D60

C220

R191

C65 18p

1000p

0

C332 0.1u

C335 0.1u

0.1u

R236

SI

5C SW

5MS SW 4.83V

100k

0.01u

HSC277 RF SW

CN15

C68

RF AMP

D9

KAPC

12.46V

T:4.85V R:0V

TX PATH

HSC277

0.1u

0

R343

68 R190

GND

COM2

C336

1k

R252

0.01u

0

66

0.01u

2

61

10k(D)

5MV

R216

3

R283

0

R238

5

C318

1000p

R218

VOLIN

R282

6

+B

C209

COM3

CP31 3.9k

1k

0.01u

COM2

R273

C210

COM1

REM

C236

R342

COM0

R164

GND

SCK

IC15 AT25160N10SI27

5MS SW LAMP

COM1

5

4 100k C202

100k

5MV VOLOUT

TONE REM VOXIN

60

82p

HOLD

WP 4

1000p

C235

C208

6

C257

4

7

3

MAZS0270H

5

WIDE/NARROW CHANGEOVER SW

560k

2

1000p

GND ENCB

V+

C201

R152

6

TONE REM VOXIN

COM0

1200p R156

270p

W/N

5MV SIGIN

R163 8

R169

1u

1

100k(D)

1k

6800p

C196

470

Q27 2SK1830

MAX DEV ENCA

6800p

C198

5MV SIGIN

5T

IC16 NJM2904V

SO 3

TEMP SMV SQV 5MV

MIC AMP

680

R153

R151

R330

150k

VR5 50k

470

0

150k

4.7u6.3 ROTARY ENCODER & VOL KNOB

18k

T:4.92V R:0V

R155

R148

R147

R144

4.7k

100k R137

TH3

-t

C193

100k DCS BAL

47k

R149

MOD VOLIN 5MS ENCB ENCA NAR

470

R146

4.7k

R143

VR6

R145

4.7k

R142

18k

180k

R140

10u10

7

2

NOAA

* Q59

R141

8 VCC

GND NOAA

* R258 C195

RXLED

EEPROM

CS

1000p

* R344

WX DETECTION AMP T0

RXLED

DVSS

1000p

C291

SEG0

C290

D8

TEMP FINAL

100k

1

DVCC

0.012u

C349 0.1u

COM3

47k

COM2

R324

180k

T:4.23V R:0V

RF SW

1000p C64

B30-2157-05 100

D40

B30-2156-05 R227 D41

R226 R168

1

820k

180k C212

TX/BUSY LED SW

COM1

8

5T +B

C316

COM0

9

7

2200p

6

R167

5T +B

C19 R237

39

* C321

10

C211

* R259

* C320

GND

220

820k

V+

Q47 RN1701

11

5

120k

4

0.047u

C331 1000p

BUSY LED

T:3.29V R:110mV

T:73mV R:3.39V

R158

330k

R159

R165

C339

12

C204

3

120p

10k

13

* R264

C203

14

2

R166

1

* R257

R171

R157

R172

* R261

C351

0.01u

47k

R260 WX1050Hz * C350

TX LED

330k

0.033u

5R

CTCSS/DCS/WX FILTER IC17 NJM2902V

R170 47k (D)

56k (D)

C213

4.7u6.3

2.08V

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV

R346 68

LCD (B38-0881-05)

5MS T:0V R:4.89V

ENCA ENCB

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV

C325

ENCA ENCB

NAR TO QT/DQT 5R 5C ENCA ENCB

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV 5MV 5M

5.6k

NAR TO QT/DQT 5R 5C ENCA ENCB

NAR TO QT/DQT

5MS 5T +B NAR TO QT/DQT 5R 5C TEMP FINAL AFM KAPC DATA CLOCK SHIFT PLLLD PLLEN SMV SQV 5MV 5M

R47

+B

MOD VOLIN

1000p

5MS 5T

MOD VOLIN

C61

5MS 5T

MOD VOLIN

R46

5MS

MOD VOLIN

10k

MOD VOLIN

R45

MOD VOLIN

3.3k

MOD VOLIN

BPF/APC

BPF/APC

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

9.74Vrms

-53.00dBm

ANT

ANTFILTER

BPF

0.84Vrms

MIC AMP

IC16

Receiver Section

MIC

AF(1kHz)

Transmitter Section

-18.68dBm

-62.50dBm

Q17

Q10

-31.83dBm

BPF

11.00dBm

Q11

-35.83dBm

Q24

20.83dBm

Q12

30.50dBm

ANTFILTER

ANT 50Ω

0.26Vrms

SP

0.58Vrms

12.09mVrms 0.66Vrms

AMP

IC6

All voltage levels must be measured after setting the AF output voltage at 0.58V rms. The RF and IF sections are measured by using a spectrum analyzer. Each voltage of the AF section is measured by using an AF VTVM or osciloscope. The level for each point is measured without removing parts or cutting the pattern.

-17.33dBm

FM IC

IC3

AF(1kHz)

All voltage levels must be measured at High power transmission. The RF and IF sections are measured by using a spectrum analyzer. After setting the standard (1 kHz, 3 kHz Dev.) deviation, each voltage of the AF section is measured by using an AF VTVM or osciloscope. The level for each point is measured without removing parts or cutting the pattern.

24.67dBm

IF(38.85MHz)

15.17dBm

-9.83dBm

4.17dBm

Q16

vco

10.50dBm

-59.33dBm -47.83dBm

RF(145.99MHz)

vco

Q9

RF(145.99MHz)

TH-K2AT/K2E/K2ET

LEVEL DIAGRAM

55

TH-K2AT/K2E/K2ET BLOCK DIAGRAM

VR6 TONE DTMF/BEEP VR5 D6 1SV305

IC16 NJM2904V

IC5 NJM2107F

MOD

LIMITTER AMP SPLATTER FILTER

HPF

Q1 2SC5066 (O) OSC

5C 5T

D1, D2 1SV325

5MV Q29,D22,D27 2SC4919 1SS361 RB706F-40 MIC AGC

D74,D75 DA221 LIMITTER J3

Q30 2SC4617(R)

Q27 2SK1830

Q6 2SC5488

VOX AMP

WIDE/NARR SW

RF AMP

Q3 2SK1830

D24 MA742

PTTE/RXD

5MV

MICM

NAR

SHIFT SW

VOX DET

LOOP FILTER

LPF

SHIFT

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

IC1 LMX2316TMX

2nd Local

PLL IC

KEY ILLMI

TCXO

Q23 KTC4082

5MS

X1 12.8MHz

KIN0~3

TRIPLER

Q50 2SK1830

VR1

KEY ILLMI SW

5C PLLEN PLLLD CLOCK DATA

KYO0~3

5R VR6

X57-674

B/3 VOXIN

TONE

NAR SIGIN

VSS,DVSS, AVSS,AVRL

Q52 RN1107

PTT PTTI KIN4

BSFT

LAMP

D48,49 B30-2205-05

Q51 RN4902

LCD ILLMI

LCD ILLMI SW

BEAT SHIFT IC8 LAMP MPU

KYO1 KYO2

X0 X1 MONI X57-674

SEG0~31 COM0~3

C/3

NOAA BTEMP CLOCK DATA EEPCS EEPDI

LCD

D/A DTMF/BEEP,TONE PWM BPF/APC

A/D REM,SQ,SM,BATT

X57-674

56

A/3

H/L AFM,SPM,MICM, KAPC,FINAL,CHARGE, AFAMP,RXLED,BTDET,TXD 5MS,5R,5T,5C(SAVE),VOX, KYO0~3,VUKEY

H/L RXD,PTTE,PTTI, ENCA,ENCB, PWRSW,KIN0~4,TYPE

IC15 AT25160N 10SI27 EEPROM

INTUP INTDW

IC10 S-80844 CNNBB85 INT

DCDET VCC,DVCC AVCC,AVRH RESET HST(VCC),V3

IC11 S-80930 CNNBG80 RESET

5C

D40,41 B30-2156-05 B30-2157-05 TX/RX LED

5M Q47 RN1701

5T

TX/BUSY LED SW

RXLED

TH-K2AT/K2E/K2ET BLOCK DIAGRAM

B

LPF Q2 2SC5488

Q5 2SC5488

D8, D9 HSC277

Q9 2SC5488

Q10 2SC4926YD

Q11 2SK2596

Q12 2SK3476

D10 XB15A709

RF AMP

RF AMP

TX/RX SW

RF AMP

PRE-DRIVE AMP

DRIVE AMP

FINAL AMP

ANT SW

5R

5C

ANT

5T

Q4,D7 TH1 B57331V 2103J

LIPPLE FILTER

D12,D13 HVC131

Q14 RN4902

Q15 2SC4617(R)

Q58 2SK1830

APC SW APC KILL SW

SW

ANT SW

BIAS SW

TEMP DET

FINAL Q13 2SK1830

CF1 450kHz 5C

D17 HSM88AS

IC2 NJM2904V D14 MA2S111

5T SW

APC AMP

ANT SW

5R APC V

Q16 3SK318

XF1 MCF

IC3 TA31136FN

38.4MHz

FM IC

BPF/APC

Q24 2SC5488

D18,D19 1SV305

Q17 2SK1215

D20,D21 1SV305

IF AMP

BPF

RF AMP

BPF

BPF/APC

5R

BPF/APC

38.85MHz 5R 5R

5R SQ,SM Q22 RN2105

CD1

LPF DE-EMPH

WIDE/NARR SW

Q20 2SK1830

Q21 2SC4617 (R) AF FILTER

VR

IC6 TA7368F AF AMP

AF MUTE SW

J4

Q56 CPH3417 D26 1SS388 SP MUTE SW REM /TXD

DTMF/BEEP

IC17 NJM2902V 5R

CT/DCS/WXA FILTER

AFM

AF AVR SPM

Q59 2SK1824

Q31 2SK1830 D25 MA2S111 MUTE SW

CN2

5R

WXA SW

Q36 2SJ347

(Ktype only)

-

THERM DET

VR1 ENC

T

Q41 RN2105 BTDET

5MS 5MS SW

+ BATT TERMINAL 7.5V Norminal (6.0 - 9.0V)

D35 RB521S-30 PROTECT IC1 TCXO Q4,5,6 D40,41

Q57 RN2105 5C

5C SW

IC9 5M TK11250 CM AVR 5.0V

Q35 2SK1830

Q33 2SB1184 (Q,R) BATT CHARGE

DC-IN DET

D30 RB521S-30

D33 RB051L-40

PROTECT

PROTECT

B IC5 Q30 IC3,17 D9,14 Q16,17 Q22,23,24 Q59

Q53 5MV RN2701 5R SW 5MV SW 5R

IC12 TK11250 CUCB AVR 5.0V

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

Q37, Q38 2SB1184(Q,R) 2SC4617(R) AF/LAMP AVR

Q34 2SK1830 CHARGE B

CHARGE SW

D32 RB051L-40 PROTECT

AF AMP

Q9,10,13 D8,10 TH1 IC16 Q47

Q55 CPH3317 5T

D36 RB521S-30

5T SW PROTECT

IC4 XC6202PB 52FR AVR 11.5V

DC IN 13.8V Norminal (12.0 - 16.0V) J2

D80 RB521S-30 B PROTECT

57

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

PB-43N Schematic diagram Discharge terminal side

T Thermister (DTN-103F3H-SYS) Breaker (BBS70 A1N-01 70˚C)

Breaker (BBS80A2Y-01 80˚C)

(4N)

Diode (ERB83-004)

(2N)

Thermister (DTN-103F3H-SYS)

T Rear charge terminal 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

58

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/info/amateur.html

59

TH-K2AT/K2E/K2ET SPECIFICATIONS General

TH-K2AT

Market code

K, K2

Number of memory channels

100 (50) + 9 special function memories

Antenna impedance (Connector type)

50 Ω (SMA)

Operating Voltage

DC IN Jack Battery terminal

Grounding method

Current

TH-K2E E

M, M2

TH-K2ET E3

100 (50) + 8 special function memories

DC 12.0 ~ 16.0 V (13.8 V nominal) DC 6.0 ~ 9.0 V (7.2 V nominal) Negative ground

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

Receive (no signal)

100 mA or less

Battery Saver ON (Average)

30 mA or less

Usable temperature range

–20° C ~ 60° C (–4° F ~ 140° F) –10° C ~ 60° C (+14° F ~ 140° F) with PB-43N

Frequency stability

Within ±5 ppm (–20° C ~ 60° C)

Dimensions (W x H x D Projections not included)

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

weight

Approx. 320 g / 11.3 oz with PB-43N Approx. 320 g / 11.3 oz with BT-14

Transmitter Transmission Mode

F3E (FM) / F2D (FM)

Frequency range Output Power

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.)

PB-43N (7.2 V)

H: 5.0 W (approx.)

M: 1.5 W (approx.)

L: 0.5 W (approx.)

BT-14 (9.0 V)

H: 3.5 W (approx.)

M: 1.2 W (approx.)

L: 0.3 W (approx.)

Modulation

Reactance

Maximum frequency deviation

±5 kHz (FM) / ±2.5 kHz (NFM)

Squrious emissions

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

Microphone impedance

2 kΩ

Receiver Reception Mode

F3E (FM) / F2D (FM)

Frequency range

136 ~ 174 MHz

Intermediate Frequency (IF)

1st IF : 38.85 MHz 2nd IF : 450kHz

144 ~ 146 MHz

Circuit type

Double super - heterodyne

Sensitivity

FM (12 dB SINAD) 2m amateur radio band: 0.18 µV or less

Squelch Sensitivity

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

Selectivity

–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 ELECTRONICS CANADA INC.

Bolivia, 239-08020 Barcelona, Spain

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

KENWOOD ELECTRONICS DEUTSCHLAND GMBH

KENWOOD IBERICA S.A. KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.

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.

KENWOOD ELECTRONICS U.K. LIMITED

Sales Marketing Division 1 Ang Mo Kio Street 63, Singapore 569110

KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom

KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands