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144MHz FM TRANSCEIVER
TH-K2AT/K2E/K2ET© 2003-8 PRINTED IN JAPANB51-8658-00 (S) 836
SERVICE MANUAL
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
CONTENTSSCHEMATIC 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
Knob (ENC)(K29-5159-03)
Knob (VOL)(K29-5150-03)
Cabinet assy(16key)(A02-3819-23)
Helical Antenna(T90-1018-25)
Key top (16key)(K29-9272-02)
Front glass(B10-2746-03)Knob
(PTT/LAMP/MON)(K29-9274-03)
Knob (ENC)(K29-5159-03)
Knob (VOL)(K29-5150-03)
Cabinet assy(4key)(A02-3818-23)
Helical Antenna(T90-1018-25)
Key top (4key)(K29-9276-02)
Front glass(B10-2746-03)Knob
(PTT/LAMP/MON)(K29-9274-03)
TH-K2AT/K2ET TH-K2E
Cap(SP/MIC/DC IN)(B09-0675-03)
Cap(SP/MIC/DC IN)(B09-0675-03)
TH-K2AT/K2E/K2ET
2
DISASSEMBLY FOR REPAIR
How to remove the case assembly from the
chassis1. Remove two screws (z) holding the chassis.2. Pull out two knobs (x) and remove two round nuts (c).3. Pull out the SP and MIC parts of the cap from jacks (v).4. Turn the unit over with the bottom of the chassis facing
upwards, and remove the chassis (n) from the caseassembly (b).
5. Remove the speaker lead (m) from the connector (CN2) ofthe TX-RX PC board (TX-RX unit A/3).
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 (.).
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).
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 closeto the antenna terminal.
10. Remove the TX-RX PC board from the chassis, then removethe encoder volume FPC (≤) from the flat cable connectorof the TX-RX PC board.
CN2
CN9
CN6
x
x
c
c
v
mb
,
,
.
ç
√
µ ∫∫
∫
∫∫Ω
/
∫
≈
~
≤
n
z
TX-RX unit (B/3)
TX-RX unit (C/3)
TX-RX unit (A/3)
TH-K2AT/K2E/K2ET
3
DISASSEMBLY FOR REPAIR
Soldering the antenna terminal
1. With the shield cover removed from the antenna terminalsection, install two screws on the PC board and bring thePC board into contact with the chassis (z).
2. Solder the antenna terminal with a soldering iron (x).
3. Remove the two screws installed in step 1 above, and installthe two screws again on the PC board together with theshield cover (c).
Replacing the final FET (Q12)
1. Remove the two screws holding the shield cover of thefinal FET section (z).
2. Remove solder from the shield cover completely with asolder absorber. (E and E3 types only)
3. Remove the shield cover (x).
z
x
c
z
x
4. Apply the tips of soldering irons to all the four pins of the finalFET at the same time (c), heat them sufficiently, and removethe final FET (v). (Two persons should be required to do this.)
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 unitA/3) and the PC board (b). If there is any space betweenthe radiation plate and PC board, eliminate it by applyingthe tip of the soldering iron to the radiation plate.
7. Apply the tip of the soldering iron to the installation side of theradiation plate of the TX-RX PC board, put a little amount ofsolder to the radiation plate that is seen through a square holein the final FET installation section and melt the solder (n).
8. When the solder in step 7 is melted, place the final FET onthe PC board by aligning it with the silk of the final FETinstallation section of the PC board (m).
9. Release the soldering iron and confirm that the final FETand 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 ceramicheater solder iron.
Radiation plate
TX-RX PC board
b
cv
m
n
TH-K2AT/K2E/K2ET
4
DISASSEMBLY FOR REPAIR
Special care and attention required for assembly1. Gluing to the key top (MIC element section)
You must also glue on the speaker storage area and heapthe glue up until wealthy glued on the speaker storage areaand the key top for waterproofing the MIC element side ofthe key top. (Fig. 1)
Fig. 1
2. Bending the LCD hardware fixture (J21-8456-03) tabs
(1) Insert the tabs of the LCD hardware fixture into four holesin the LCD installing position of the TX-RX PCB (TX-RX unitA/3). (Fig. 2)
Heap the glue up until wealthy glued on the speakerstorage area and the key top (MIC element section).
Fig. 2
(2)By pressing the LCD hardware fixture from the componentside of the TX-RX PCB, you must bent all 4 tabs of the LCDhardware fixture being visible from the foil side until thebases of each tabs are folded at least 45 degrees (Fig. 3). Ifthe bending angle of the tabs of the LCD hardware fixtureis less than 45 degrees, a display error may occur.
Bending position
NG
NG
Min 45degrees
3. PTT PCB (TX-RX unit C/3) installation procedure
Installing the PTT PCB on the TX-RX PCB and chassis areas 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 usedbehind the PTT switch. When reassembling the PTTPCB to the chassis, press the PTT PCB (under the PTTswitch) so that the tape hold the PCB and chassissecurely.
Fig. 3
CN6Chassis
PTT switch
PTT PCB (C/3)
OK A bitclearance
Noclearance
NGCN6
CN7
CN7
ChassisPTT PCB (C/3)
PTT switch
Fig. 4
Push three parts of the PTT PCBto contact tightly with the chassis.
(3)Tighten one screw in the PTT PCB.
TH-K2AT/K2E/K2ET
5
DISASSEMBLY FOR REPAIR
4. Packing (G53-1572-02) TX/BUSY lamp installation
procedure
(1)To assure waterproofing, install the packing in the chassisgroove as shown in Fig. 5. (z)
(2) Install the packing TX/BUSY lamp section on the chassis.(x)
z
x
OKPacking
NGPacking
Chassis
Chassis
5. Packing (G53-1572-02) bottom installation procedure
(1)Before installing the numeric key PCB (TX-RX unit B/3) onthe chassis, push three parts of the packing to contact tightlywith the chassis as shown in Fig. 6. If the packing is not incontact with the chassis, there may be a gap between thetransceiver bottom case assembly and the battery, andwater may enter through the gap.
Fig. 5
OK NG
Push three parts of the packing tocontact tightly with the chassis.
Clearance NG
Fig. 6
6. Cautions for installing the chassis on the case assembly
(1)Verify that the packing (G53-1572-02) TX/BUSY lamp sectionis has been past through the hole in the illumination guidesection on the top of the case assembly. (Fig. 7)
LAMP
LOW
PTT
Fig. 7
(2)Align the speaker lead as shown fig.8. Do not place theleads over the key top section, LCD section or SP/MIC/DCIN cap section.
Do not fix this part of thekey top to the rib of thecase assembly.
7. Cautions for installing the key top on the case assembly
(1) Install the key top keypad section and the power switchsection on the rib of the case assembly.
(2)Do not fix the part between the key top keypad section andthe power switch section to the rib of the case assembly,but install it as shown in Fig. 8.
The packing TX/BUSY lamp section is hasbeen past through the hole in the illuminationguide section on the top of the case assembly.
Fig. 8
TH-K2AT/K2E/K2ET
6
CIRCUIT DESCRIPTION
Frequency Configuration
The frequency configuration is shown in Figure 1 andTable 1.
Fig. 1 Frequency configuration
174.850~212.845MHz(K,K2,M,M2)182.850~184.845MHz(E,E3)
144.000~147.995MHz(K,K2)136.000~173.995MHz(M,M2)144.000~145.995MHz(E,E3)
136.000~173.995MHz(K,K2,M,M2)144.000~145.995MHz(E,E3)144.000~147.995MHz(K,K2)136.000~173.995MHz(M,M2)144.000~145.995MHz(E,E3)
RX :
TX :
ANTSW
MCF
38.85MHz38.4MHz
12.8MHz
450kHzCF
MIX, IF,DET
AFAMP
SP
PREDRIVE
FINALTCXO
DRIVE
Triplerx 3
RFAMP
1st MIX
PLLVCO
MICAMP
MIC
ANT
Receiver System
Front End
The received signal from the antenna passes through a low-pass filter and then through a transmission/reception switchingcircuit (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 througha band-pass filter (L32, L35) and enters the first mixer (Q16).
These band-pass filters are tuned to a desired frequencyby varicaps (D21, D20, D19, D18).
Double super heterodyneReception method 1st IF Frequency 38.85MHz (Upper)
2nd IF Frequency 450kHz (Lower)Transmission method VCO direct oscillation amplificationModulation Variable reactance phase modulation
Table 1 Basic configuration
ANTSW
SP
LPF
VCO
BPF/APCMPUIC8
PLL
IF AMP,DET
Triplerx 3
TCXO
BPFL41,L40,L38
BPFL32,L35
MIXERQ16
1st Local OSC(PLL)
RF AMPQ17
ANTMCFXF1
IF AMPQ24
FM ICIC3
Q23
2nd Local OSC
X1
AF AMPIC6
5R5R
D20D21
LV
6Tuning voltage
D18
38.85MHz
12.8MHz
D19
A tuning voltage corresponding to the desired signal isapplied to each varicap through the BPF/APC terminal (pin 6)of the MPU (IC8) to tune to the receive frequency.
First Mixer
The received signal passing through the band-pass filter(L32, L35) is mixed with the first local signal generated by theVCO by the first mixer (Q16) to produce a first IF signal (38.85MHz) (Upper heterodyne).
The first IF signal passes through a MCF (Monolithic crystalfilter: XF1) to remove unwanted components.
The first IF signal passing through the MCF (XF1) is amplifiedby an IF amplifier (Q24) and the resulting signal enters the FMIC (IC3).
Fig. 2 Receiver section configuration
Item Rating
Nominal center frequency (fo) 38.85MHzPass bandwidth ±6.0kHz or more at 3dBAttenuation bandwidth ±25kHz or less at 35dBUltimate attenuation 70dB or more (fo –910 kHz)Spurious response 40dB or more (fo +1MHz)Ripple 1dB or lessInsertion loss 4dB or lessTerminating impedance 610Ω ±5% // 3pF ±0.5pF
Table 2 MCF (L71-0619-05) characteristics (TX-RX unit XF1)
Item Rating
Nominal center frequency (fo) 450kHz3dB bandwidth ±6.5kHz or more50dB bandwidth ±15.5kHz or lessRipple 2dB or less (fo ±6.5kHz)
55dB or moreGuaranteed attenuation (fo ±18kHz to ±33kHz)
50dB or more (fo ±100kHz)Insertion loss 4dB or lessI/O matching impedance 1.5kΩ
Table 3 Ceramic filter (L72-0968-05) characteristics (TX-RX unit CF1)
TH-K2AT/K2E/K2ET
7
CIRCUIT DESCRIPTION
IF Circuit
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 12.8MHz reference oscillator frequency of the TCXO (X1) by Q23, aremixed in the FM IC to produce a second IF signal (450 kHz) (Lowerheterodyne).
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 isdetected to produced an audio signal.
Squelch and Mute Circuit
A noise component is obtained by passing FM detectionoutput (FM IC pin 9) through an operational amplifier in the
CF1450kHz
CD1
AF OUT
AFM
SM
SQ
IC8MPU
49
9
48
SMV
SQV
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
MIX
LocalOSC
Buffer
RSSI
Quadraturedetector
LPF
NoiseAMP
IF AMP InverterAMP
1st IF input(38.85MHz)
IC3FM IC
2nd local OSC(38.4MHz)
5R
Q21AF FILTER
Q20AF MUTESWITCH
VOL IN
R135
C173 C174
R125
R126
Noisecomp
Rectifier
5R
SP
AF OUT AFFILTER
Q21
AF MUTESWITCH
Q20
IC6AF AMP
IC3FM IC
VR201AF VOLUME
DTMF/BEEP
REMIC8MPU
SPKAFO
SPGREM/TXD
40
46
9
J4SP JACK
Fig. 3 IF, Squelch, Mute and S meter circuit
Fig. 4 AF amplifier
FM IC and band-pass filter consisting of R125, R126, R135,C173, C174. The noise component is rectified in the FM IC toproduce 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 theMPU (IC8) and is compared with the reference voltage presetin 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.
S Meter Circuit
The S meter voltage is output from the RSSI terminal (pin12) of the FM IC (IC3) and input to the SM terminal (pin 49) ofthe MPU. Then the voltage is converted from analog to digitalin the MPU to control the S meter display on the LCD.
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 signalpasses through an AF volume (VR201) and is amplified to aspecified output level with an AF amplifier (IC6).
The audio signal amplified with the AF amplifier (IC6) isoutput through an internal speaker or an external speakerjack (J4).
The beep tone and the DTMF signal are output from theDTMF/BEEP terminal (pin 40) of the MPU (IC8), enters the AFamplifier (IC6) and is output as a monitor tone.
TH-K2AT/K2E/K2ET
8
CIRCUIT DESCRIPTION
Transmitter System
Microphone Amplifier Circuit
The audio signal from the microphone passes through ahigh-pass filter (IC5) and enters a microphone amplifier (IC16).
The signal passes through a pre-emphasis circuit, limiteramplifier and splatter filter inside the microphone amplifier.The splatter filter will remove distortion outside the audio band.
Modulation Circuit
The audio signal amplified by the microphone amplifier(IC16) passes through a semi-fixed volume (VR5) formodulation adjustment, and goes to the VCO modulationvaricap (D6) for variable reactance phase modulation.
Drive and Final Circuit
The output signal from VCO (Q1) passes through an RFamplifier (Q2, Q5, Q9) and drive amplifier (Q10, Q11), and isamplified by a power amplifier (Q12).
Transmission/Reception Switching Circuit
The signal amplified by the power amplifier (Q12) passesthrough a transmission/reception switching circuit and a low-pass filter, and is fed to the antenna.
MIC IC5
HPF
IC16MIC AMP
Pre-emphasis
Splatterfilter
VCO
Limiter6 1
Fig. 5 Microphone amplifier circuit
MIC
HPF MICAMP
IC16
ANTSW
D10,L19D12,D13
VCO
Q1
LPF
IC5
VR5MAX DEV
Q2RF AMP
Q5RF AMP
Q9RF AMP
Q10DRIVE AMP
Q11DRIVE AMP
Q12POWER AMP
ANT
Fig. 6 Modulation, Drive, Final and
Transmission/reception switching circuit
APC Circuit
The APC (Automatic Power Control) circuit is used to obtaina stable transmission power and controls transmission outputby 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 byR70, R71 and R72 are fed to the APC differential amplifier (IC2).
The voltage in proportion to the difference betweenreference voltage and detection voltage is output from theBOUT terminal (pin 7) of IC2 as an APC voltage.
Q10
Q15
Q11
Q12
VG
G
Q58
VD
D
LPF
ANT
D12
D13
RX
5T
B
1AOUT
IC2APC AMP
2A–IN
3A+IN
4
8
7
6
5GND
V+
BOUT
B–IN
B+IN
R72
R71
R70
Q14
B
Q13
+
TH
1
–t
Q55
7KAPC
51
6BPF/APC
THERM
16FINAL
IC8MPU
D10
L19
Fig. 7 APC and Temperature protection circuit
The transmission/reception switching circuit consists of D10,L19, D12 and D13. These diodes are turned ON in transmitmode and OFF in receive mode to switch signals.
TH-K2AT/K2E/K2ET
9
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 Q58by 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 Midor Low level, the APC voltage level applied to Q12 is reducedby 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 bydividing the 12.8 MHz reference frequency of the TCXO (X1)with PLL IC (IC1). Comparison frequency is produced by
TCXOPLL IC
IC1
LOOPFILTER
TO
TCXO5C5/0V
5MS5/0V
PLL5C5/0V
VCX1
12.8MHz
CLOCKDATA
LE
Fo/LDIF Rectifier
LPF Q6
RFAmp
D1,D2
VCO
5C5/0V
LV1~5V
SHIFTH/L
RippleFilter
Q4
OSC
Q1BuffAmp
Q2RF
Amp
Q5
SW
D8,D9
MODSHIFT
SW
Q3
MOD
12.8MHz
TXRX
5T 5/0V5R 5/0V
VR
1
Fig. 8 PLL and VCO circuit
amplifying VCO output with an RF amplifier (Q6) and dividingit with the PLL IC.
The PLL synthesizer with 5 kHz and 6.25 kHz step isconfigured by comparing phases of the reference frequencyand comparison frequency.
The phase difference between reference frequency andcomparison frequency passes through a charge pump in thePLL IC, then ripples are removed with a loop filter with low-range passing characteristics to produce VCO control voltage(lock voltage).
VCO Circuit
The VCO produces a desired frequency directly with aColpits oscillation circuit containing an oscillation transistor (Q1)used for both transmission and reception.
The VCO control voltage is applied to varicap (D1, D2) toproduce a desired frequency.
The SHIFT terminal (pin 113) of the MPU (IC8) goes "H"during reception, and the shift control switch (Q3) is turnedON to change oscillation frequency.
Fo/LD PLL LD
IC8MPU
IC1PLL IC
R32
D16
C40
R3514 102
5C
Fig. 9 Unlock detection circuit
Unlock Detection Circuit
When the PLL is unlocked, the waveform of the pulseoutput from the Fo/LD terminal (pin 14) of the PLL IC (IC1) isrectified with R32, D16, R35 and C40, and the Fo/LD terminalis made “L” level. The voltage at the Fo/LD terminal isdetected by the MPU to control transmission/receptionswitching timing.
TH-K2AT/K2E/K2ET
10
Power Supply Circuit
Charging Circuit
When an external power supply is connected to the DC INterminal, the constant-current circuit consisting of Q33 andD31 provides a constant current of approx. 110 mA to the Ni-MH battery.
If no external power supply is connected to the DC INterminal, the constant-current circuit does not function.
Power Supply Switching Circuit
The voltage supplied through the battery terminal or DC INterminal is branched in the power supply switching circuit asshown in Fig.10 and then supplied to the required components.
Battery Type Recognition Circuit
When the battery pack is attached to the transceiver, thebattery type is recognized with the T terminal on thetransceiver. This battery type recognition activates chargingfor the Ni-MH battery pack and displaying the battery meter.
+
-
T
B
J2
RN2701
XC6202PB 52FR
Q41
D32
D80
5T SW
Q37, Q38
2SK18305M
CHARGESW
RB051L-40
IC6D48,49D42,43,46D47,44
BATT CHARGE
5R SW
TK11250 CUCB
5.0V
TK11250 CM
AVR
5C SW
PROTECT
CPH3317
2SJ347
Q35
CHARGE
BTDET
Q34
Q57D33
IC12
AVR
2SB1184(Q,R)2SC4617(R)
IC4
5MS SW
Q55
5MV SW
Q36
RB521S-30
DC-IN DET
RN2105
AF AMP
2SB1184 (Q,R)
PROTECT5.0V
11.5V
AF/LAMP AVR
RN2105
Q53
PROTECT
THERMDET
2SK1830
B
RB051L-40
Q33
AVR
IC9
B
PROTECT
D36RB521S-30
D35
PROTECT
RB521S-30
PROTECT
D30RB521S-30
IC8MPU
D31DA221
CONSTANTCURRENT
BTEMP
DCDET
BATT TERMINAL7.5V Norminal(6.0 - 9.0V)
DC IN13.8V Norminal(12.0 - 16.0V)
IC1TCXOQ4,5,6D40,41
5R
5T
VR1ENC
5C
Q9,10,13D8,10TH1IC16Q47
5MV
IC3,17D9,14Q16,17Q22,23,24Q59
IC5Q30
5MS
Fig. 10 Charging and Power supply switching circuit
Control System
Reset and Backup Circuit
When power is supplied to the transceiver, the 5M voltagegoes “H” as C303 is charged.
A rising edge of the 5M voltage is detected by the voltagedetection IC (IC11) and when its output (RESET) goes “H”,the reset status of the MPU is released.
D35 R244 5M
5C
C307
R243
L63BATT 5V
AVR
IC9
IC8MPU
IC15EEPROM
Timing chart
PowerON
5V5M
0
PowerOFF
IN OUT
C303
+IC11
IN OUTRESET
IC10
IN OUT INT
5VRESET
0
5VINT
0
If the supplied voltage to the transceiver is reduced andthe 5M voltage falls below the detection voltage of the voltagedetection IC (IC10), the MPU detects it by an interruptprocessing, backs up data in EEPROM (IC15) and turns thepower off.
Fig. 11 Reset and Backup circuit
CIRCUIT DESCRIPTION
TH-K2AT/K2E/K2ET
11
Voltage Detection Circuit
Various voltages are input to the A/D port of the MPU (IC8)for processing.
Battery voltage is divided with resistors (R240, R241) andenters the BATT terminal (pin 52) of the MPU.
Battery voltage is used for battery meter indication duringtransmission or for alert tone processing when an abnormalpower supply voltage (approx. 16.5 V or higher) is applied.
Squelch voltage becomes DC voltage by detecting changesin noise voltage in the FM IC (IC3), and the signal is used forsquelch control.
The S meter voltage is output from the RSSI pin of the FMIC to control S meter display.
Detection of thermistor voltage (temperature) in the Ni-MHbattery during charging, detection of remote microphone keypressing and VOX voltage monitoring are performed througheach A/D port of the MPU.
Battery Save Circuit
If there is no signal (squelch off, scan off or no key operation)for longer than 10 seconds, the transceiver will enter thebattery save mode.
Battery save operation is performed by controlling Q57 withan output signal from the 5C (SAVE) terminal (pin 15) of theMPU.
The 5C ON/OFF cycle ratio during battery saving can be setfrom a transceiver menu.
5MS 5C
5MQ41
Q57
37
15
5MS
5C (SAVE)
IC8MPU
Fig. 12 Battery save circuit
LED Drive Circuit
The LCD and key illumination LEDs are lighted by controllingQ51 for the LCD and Q50 for keys according to the outputvoltage from the AF/LAMP AVR (Q37).
The BUSY and TX illumination LEDs are lighted by controllingQ47.
B
AF AMP
D33
Q38
Q37
56LAMP
IC8MPU
99RX LED
D48
D49
D42
D43
D46
Q50
D41BUSY LED
R227
D40
TX LED
R226
5C
5T
D42
D43
Q51
Q47
D42
D43
D44
D47
Fig. 13 LED drive circuit
CIRCUIT DESCRIPTION
TH-K2AT/K2E/K2ET
12
Key and Encoder Input Circuit
The POWER key is assigned to the interrupt port (pin 95) ofthe MPU.
The PTT key is assigned to the dedicated port (pins 13, 14)of the MPU.
SETCALL#0∗
MONIMR987
LAMPVFO654
MENUF321
KIN0 KOUT0 KOUT1 KOUT2 KOUT3 PWRSW
95
S7POWERSW
J3
ROTARYENCODER
KIN1 KIN2 KIN3 KIN4
IC8MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
SET
MONI
LAMP
MENUCALLMRVFOF
KIN0 KOUT0 KOUT1 KOUT2 KOUT3
95
S7
J3
KIN1 KIN2 KIN3 KIN4
IC8MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
PWRSW
POWERSW ROTARY
ENCODER
Other keys composes a matrix and key presses are detectedby scanning them by software.
The encoder reads data using the interrupt port (pins 35and 36) of the MPU.
16 key (K, K2, M, M2 and E3 types)
Fig. 14 Key and Encoder input circuit
4 key (E type)
CIRCUIT DESCRIPTION
TH-K2AT/K2E/K2ET
13
CTCSS/DCS
The encode signal is generated by the MPU (IC8) and outputfrom the TONE terminal (pin 41) of the MPU.
The unwanted high-frequency components of the encodesignal output from the MPU are removed with a low-pass filter,and applied to VCO modulation input (MOD) and TCXO VCterminal for modulation.
The VCO and TCXO modulation levels are adjusted by VR6to produce flat modulation characteristics in low and highranges.
The decode signal is input to the SIGIN pin (pin 47) of theMPU after the waveform of the audio signal from the FM IC isrectified with a CTCSS/DCS filter (IC17). Then the set CTCSStone frequency and DCS code are detected by digital signalprocessing in the MPU to control muting.
LPFVR6
VCO
VOL OUT
MOD
X1TCXO
VC
IC16
1
6
MICAMP
IC5
HPF
MIC
IC6AF AMP
Vin
IC8MPU
TONE41
40
47
111
9SIG INVOX IN
NOAA K, K2 types only
DTMF/BEEP
IC17D24Q30 IC3
CTCSS/DCSFILTER
FMIC
50
VR
5
AMP
DTMF
The DTMF signal is generated by the MPU (IC8) and isoutput from the DTMF/BEEP terminal (pin 40) of the MPU.
The DTMF signal is mixed with an audio signal at the inputside of the AF amplifier (IC6), and is output as a monitor tone.
The DTMF signal is mixed with a modulation signal at theinput 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 themicrophone, and then the signal is converted into the DCVoltage D24 rectifies.
The DC voltage activates the MPU (IC8), and the VOX starts.
Weather Alert (K and K2 types only)
The IC17 apmlifies the detected signal from the FM IC (IC3),and the MPU (IC8) processes the signal. This signal processingactivates Weather Alert function.
Fig. 15 CTCSS/DCS, DTMF, VOX, Weather alert
Serial Control
Serial control must be enabled from a transceiver menu sothat the REM/TXD pin of the speaker jack (J4) and the PTT(RXD) pin of the microphone jack (J3) function as TXD andRXD, respectively, when communicating with a personalcomputer.
SP
POUT10
HPF
IC5
IC6AF AMP
PTTE
TXD
RXD
REM
IC8MPU
SPKAFO
SPGREM/TXD
13
46J4
SP JACK
IM
5MS
+
–
PTTMIC
J3MIC JACK
5MC
12
11
MIC
Fig. 16 Serial control
CIRCUIT DESCRIPTION
TH-K2AT/K2E/K2ET
14
MPU : 90522BPFFG139 (IC8)
Pin function
1 CLOCK O Common serial clock output2 DATA O Common serial data output3 EEPDI I Data input from EEPROM4 EEPCS O Chip select output to EEPROM5 VOX O VOX power supply switch L:ON
6 BPF/APC OBPF tuning voltage output, APC voltageoutput (PWM)
7 KAPC O APC ON/OFF switch L:APC ON8 VCC - Positive power supply9 AFM O AF mute switch L:Mute10 SPM O Speaker mute switch H:Mute11 RXD I UART data input line from PC (9600bps)12 TXD O UART data output line to PC (9600bps)13 PTTE I External [PTT] key input L:ON14 PTTI I [PTT] key input L:ON15 5C(SAVE) O Save power supply switch L:ON
16 FINAL OGate bias control of TX final amplifier
L:Bias ON17 SEG0 O LCD segment output 018 SEG1 O LCD segment output 119 SEG2 O LCD segment output 220 SEG3 O LCD segment output 321 SEG4 O LCD segment output 422 SEG5 O LCD segment output 523 SEG6 O LCD segment output 624 SEG7 O LCD segment output 725 SEG8 O LCD segment output 826 SEG9 O LCD segment output 927 SEG10 O LCD segment output 1028 SEG11 O LCD segment output 1129 SEG12 O LCD segment output 1230 SEG13 O LCD segment output 1331 SEG14 O LCD segment output 1432 SEG15 O LCD segment output 1533 VSS - GND
34 COR1- Power supply stabilization (Connected to
VSS through 0.1uF)35 ENCA I Encoder A side input36 ENCB I Encoder B side input37 5MS O 5MS main power supply switch L:ON38 DVCC - Reference voltage input for DAC39 DVSS - Ground for DAC
40DTMF/
OEncode waveform output of DTME/BEEP/
BEEP 1750Hz (D/A)
41 TONE OEncode waveform output of CTCSS/DCS(D/A)
42 AVCC - Positive power supply for ADC43 AVRH - Reference voltage input for ADC44 AVRL - Ground reference voltage input for ADC45 AVSS - Ground for ADC
46 REM IRemote control microphone key voltageinput (A/D)
47 SIGIN IDecode waveform input of CTCSS/DCS(A/D)
Pin Pin I/O FunctionNo. NamePin Pin I/O FunctionNo. Name48 SQ I Noise voltage input for squelch (A/D)49 SM I RSSI voltage input for S-meter (A/D)50 VOXIN I Microphone voltage input for VOX (A/D)51 THERM I TX temperature compensation input(A/D)52 BATT I Battery voltage input (A/D)
53 BTEMP IDetection of thermistor voltage (temperature)in the Ni-MH battety (A/D)
54 VCC - Positive power supply
55 CHARGE OBattery charge circuit power supply switch
H:ON56 LAMP O Lamp power supply switch H:ON
57 AFAMP OAF amplifier/Lamp AVR power supplyswitch H:ON
58 NAR O Wide/Narrow switching H:Narrow59 COM0 O LCD common output 060 COM1 O LCD common output 161 COM2 O LCD common output 262 COM3 O LCD common output 363 VSS - GND64 SEG16 O LCD segment output 1665 SEG17 O LCD segment output 1766 SEG18 O LCD segment output 1867 SEG19 O LCD segment output 1968 SEG20 O LCD segment output 2069 SEG21 O LCD segment output 2170 SEG22 O LCD segment output 2271 SEG23 O LCD segment output 2372 SEG24 O LCD segment output 2473 NC - Not used74 NC - Not used75 SEG25 O LCD segment output 2576 SEG26 O LCD segment output 2677 SEG27 O LCD segment output 2778 SEG28 O LCD segment output 2879 SEG29 O LCD segment output 2980 SEG30 O LCD segment output 3081 SEG31 O LCD segment output 3182 V0 - Not used83 V1 - Not used84 V2 - Not used85 V3 - LCD drive power supply 386 HST(VCC) I Not used (VCC)87 MD2 I L fixed88 MD1 I H fixed89 MD0 I H fixed90 RESET I Reset input L:Reset91 VSS - GND92 X0 I System clock (7.9872MHz)93 X1 O System clock (7.9872MHz)94 VCC - Positive power supply95 PWRSW I Power switch interrupt input (↓)96 INTUP I Power supply voltage interrupt input (↑)97 INTDW I Power supply voltage interrupt input (↓)
SEMICONDUCTOR DATA
TH-K2AT/K2E/K2ET
15
98 DCDET IDC IN detection interrupt input (↓) L:DC IN connected
99 RXLED O Busy LED output H:ON100 BSFT O Beat shift swiching output H:ON101 PLLEN O Serial enable output to PLL IC102 PLLLD I Lock detection input from PLL IC H: Lock103 KIN0 I Key matrix input 0104 KIN1 I Key matrix input 1105 KIN2 I Key matrix input 2106 KIN3 I Key matrix input 3107 KIN4 I Key matrix input 4108 TYPE I Market code bit input109 VUKEY I Detection of 4 key or 16 key110 MICM O Microphone mute switch H:Mute111 NOAA I 1050Hz tone detection input112 5R O RX power supply switch L:ON113 SHIFT O VCO shift switch L:TX, H:RX114 5T O TX power supply switch L:ON115 KOUT0 O Key matrix output 0116 KOUT1 O Key matrix output 1117 KOUT2 O Key matrix output 2118 KOUT3 O Key matrix output 3119 VSS - GND120 BTDET O Battery detection switch L:ON
SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION
Pin Pin I/O FunctionNo. Name
IC1 PLL IC
IC2APC differentialamplifier
IC3 FM ICIC4 11.5V AVRIC5 HPF Active filterIC6 AF amplifierIC8 MPUIC9 5.0V AVR
IC104.4V voltage
MPU INT voltage detectiondetection
IC113.3V voltage
MPU Reset voltage detectiondetection
IC12 5.0V AVRIC15 EEPROMIC16 MIC amplifier Limiter, splatter filter
IC17CTCSS/DCS/WX
Active filterfilter
Q1 VCOQ2 RF amplifier
Q3VCO shift
On RXcontrol switch
Q4 Ripple filterQ5,6,9 RF amplifierQ10,11 Drive amplifier
Q12 Power amplifier
Q13APC circuit
On TXoperation switch
Q14APC output
On TXswitch
Q15Q10 operation
On TXswitch
Q16 1st mixerQ17 RX 1st amplifier
Q20Audio mute
Audio mute when offswitch
Q21 Audio filter Active filter
Q22Wide/narrow
On when wide is selectedchangeover switch
Q23 Tripler 2nd localQ24 IF amplifier 1st IF 38.85MHz
Q27Wide/narrow
On when wide is selectedchangeover switch
Q29MIC mute
Mutes when ONswitch
Q30VOX detectionamplifier
Q31Q56 operation
Off when the speaker outputs audioswitch
Q33 Charge switch
Ref. No. Use/Function Operation/Condition/Compatibility
TX-RX UNIT (X57-674X-XX)
COMPONENTS DESCRIPTION
TH-K2AT/K2E/K2ET
16
D33Reverse current
Batteryprevention
D34AVRconstant-voltage
D35Reverse current
Batteryprevention
D36Reverse current
DC INprevention
D40 TX LED Lights on TXD41 BUSY LED Lights on RX
D42-44 Key illuminationKey backlight illumination
D46,47 LED
D48,49LCD illumination
LCD backlight illuminationLED
D60Key typedetection
D62-65market codedetection
D69-72Reverse current
Key matrixprevention
D73 Voltage dropD74,79 Limiter
D80Reverse currentprevention
COMPONENTS DESCRIPTION
Q34Q33 operation
On when chargingswitch
Q35 DC IN detection H: DC IN detection
Q36Ni-MH temperature On when temperature detection isdetection activated
Q37AF amplifier/Lamp AVR
Q38Q37 operation On when the speaker outputs audio orswitch lamp lights
Q41 5MS switch On when 5MS is applied
Q47TX/BUSY LEDswitch
Q50 Key LED switch On when the key LED lightsQ51 LCD LED switch On when the LCD LED lightsQ52 Beat shift switchQ53 5R/5MV switch On when 5R or 5MV is appliedQ55 5T switch On when 5T is applied
Q56Speaker muteswitch
Q57 5C switch On when 5C is applied
Q58Q12 gate
Off when High power is selectedvoltage switch
Q59WX detectionamplifier
D1,2VCO frequencycontrol
D5 Frequency shiftD6 VCO modulationD7 Speed up Ripple filterD8 RF switch On TXD9 RF switch On RX
D10-13 Antenna switch On TX
D14Reverse current
APC reference voltageprevention
D15APC outputvoltage limiter
D16 PLL lock detection
D17Over inputprotection
D18-21 RX BPF tuningD22 MIC mute control
D24VOX detectionrectification
D25Speaker mutespeed up
D26 C246 discharge
D27MIC ALCrectification
D30Reverse current
Charge currentprevention
D31Constant-current
Constant-current chargecircuit
D32Reverse current
DC INprevention
Ref. No. Use/Function Operation/Condition/Compatibility Ref. No. Use/Function Operation/Condition/Compatibility
TH-K2AT/K2E/K2ET
17
∗ New Parts. indicates safety critical components.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 K: USA P: CanadaY: PX (Far East, Hawaii) T: England E: EuropeY: AAFES (Europe) X: Australia M: Other Areas
Parts No. DescriptionAddressNewpartsDestination Destination
TH-K2AT/K2E/K2ET
Ref. No. Parts No. DescriptionAddressNewparts
TH-K2AT/K2E/K2ET (Y50-580X-XX)TX-RX UNIT (X57-674X-XX)
Ref. No.
PARTS LIST
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
1 3A,2G * A02-3817-02 CABINET ASSY(BATTERY CASE) K2,M22 1C * A02-3818-23 CABINET ASSY(4KEY) E3 1A * A02-3819-23 CABINET ASSY(16KEY) K,K2,M3 1A * A02-3819-23 CABINET ASSY(16KEY) M2,E34 3A,3C * A10-4066-11 CHASSIS
5 3B,3D * A82-0053-02 REAR PANEL
6 1B,1D * B09-0675-03 CAP(SP/MIC/DC IN)7 1A,1C * B10-2746-03 FRONT GLASS8 1B,1D * B11-1805-03 ILLUMINATION GUIDE(LCD)9 2B,2D * B11-1806-04 FILTER(LCD)10 1B,1D * B38-0881-05 LCD
11 1G * B62-1695-00 INSTRUCTION MANUAL(CHINESE) M211 1E,1G * B62-1696-00 INSTRUCTION MANUAL(ENGLISH)11 1E,1G * B62-1697-00 INSTRUCTION MANUAL(SPANISH) K,K2,E11 1E * B62-1697-00 INSTRUCTION MANUAL(SPANISH) E311 1E * B62-1699-00 INSTRUCTION MANUAL(GERMAN) E,E3
11 1E * B62-1702-00 INSTRUCTION MANUAL(ITALIAN) E,E311 1E * B62-1757-00 INSTRUCTION MANUAL(FRENCH) E,E311 1E * B62-1758-00 INSTRUCTION MANUAL(DUTCH) E,E312 3A * B72-2128-04 MODEL NAME PLATE(TH-K2AT) K,K2,M12 3A * B72-2128-04 MODEL NAME PLATE(TH-K2AT) M2
12 3C * B72-2129-04 MODEL NAME PLATE(TH-K2E) E12 3A * B72-2193-04 MODEL NAME PLATE(TH-K2ET) E3
13 2B,2D * E04-0443-05 RF COAXIAL RECEPTACLE(SMA)14 2A,2C * E23-1234-04 TERMINAL(BATTERY)15 2B,2D * E29-1199-04 INTER CONNECTOR(LCD)16 1A,1C * E37-1106-05 LEAD WIRE WITH CONNECTOR(SP)
17 2A,2C * F10-2464-04 SHIELDING COVER(FINAL FET)18 2A,2C * F10-2465-04 SHIELDING COVER(ANT TERMINAL)19 2B,2D * F15-1008-04 SHADOW PLATE(LCD)
- * G10-1317-04 FIBROUS SHEET(SP NET)21 3B,3D G53-1529-04 PACKING(VOL/ENC)22 2A,2C * G53-1572-02 PACKING(CASE)23 2B,2D * G53-1589-03 PACKING(SP/MIC)
24 3E * H52-1960-02 ITEM CARTON CASE(TH-K2AT) K,M24 3E * H52-1961-02 ITEM CARTON CASE(TH-K2E) E24 3E * H52-1962-02 ITEM CARTON CASE(TH-K2ET) E325 2H * H52-2009-02 ITEM CARTON CASE(TH-K2AT) K2,M226 2F * H12-3146-01 PACKING FIXTURE K,M,E
26 2F * H12-3146-01 PACKING FIXTURE E327 3G * H12-3147-03 PACKING FIXTURE K2,M2
28 2A,2C * J19-5451-03 HOLDER(TERMINAL)29 1B,1D * J21-8456-03 HARDWARE FIXTURE(LCD)30 2E,3G * J29-0709-04 BELT HOOK ASSY ACCESSORY31 2A,2C * J30-1284-04 SPACER(PTT KNOB)32 3E,2G J69-0342-05 HANDSTRAP ACCESSORY M,M2,E
32 3E J69-0342-05 HANDSTRAP ACCESSORY E333 2B,2D J82-0076-05 FPC(VOL/ENC)45 3A,3C J99-0376-04 ADHESIVE TAPE34 1B,1D K29-5150-03 KNOB(VOL)35 1B,1D K29-5159-03 KNOB(ENC)
36 1A * K29-9272-02 KEY TOP(16KEY) K,K2,M36 1A * K29-9272-02 KEY TOP(16KEY) M2,E337 1A,1C * K29-9274-03 KNOB(PTT/LAMP/MONI)38 1C * K29-9276-02 KEY TOP(4KEY) E
A 2B,2D N09-1492-05 PAN HEAD SCREW(SMA)B 1B,1D N14-0569-04 CIRCULAR NUT(VOL/ENC)C 1B,1D N14-0573-04 CIRCULAR NUT(SMA)D 1A,1C N79-2035-46 PAN HEAD TAPTITE SCREW(PCB)E 2A,2C N79-2040-45 PAN HEAD TAPTITE SCREW(HOLDER,R PANEL)
F 3A,3C N82-2007-46 PAN HEAD TAPTITE SCREW(CASE)G 2A,2C N09-2433-05 PAN HEAD TAPTITE SCREW(FINAL FET)
39 2B,2D R39-0602-05 VARIABLE RESISTOR
40 1A,1C T07-0341-15 SPEAKER41 2F,3G * T90-1018-25 HELICAL ANTENNA ACCESSORY
42 2F * W08-0959-15 CHARGER(230V/13.8V) ACCESSORY M,E,E343 2E * W08-0960-15 CHARGER(120V/13.8V) ACCESSORY K44 2E * W09-0991-05 BATTERY ASSY(7.2V/1100MAH) ACCESSORY K,M,E44 2E * W09-0991-05 BATTERY ASSY(7.2V/1100MAH) ACCESSORY E3
D40 B30-2156-05 LED(RED)D41 B30-2157-05 LED(YELLOW)D42-44 B30-2205-05 LED(YG) E3D42-44 B30-2205-05 LED(YG) K,K2,MD42-44 B30-2205-05 LED(YG) M2
D42,43 B30-2205-05 LED(YG) ED46 B30-2205-05 LED(YG) ED46,47 B30-2205-05 LED(YG) E3D46,47 B30-2205-05 LED(YG) K,K2,MD46,47 B30-2205-05 LED(YG) M2
D48,49 B30-2237-05 LED(YG)
C1 CK73HB1C103K CHIP C 0.010UF KC2 CK73HB1H102K CHIP C 1000PF KC3 CC73GCH1H030B CHIP C 3.0PF BC4 CK73HB1H102K CHIP C 1000PF KC5 CK73HB1A104K CHIP C 0.10UF K
C6 CK73HB1H102K CHIP C 1000PF KC7 CC73HCH1H0R5B CHIP C 0.5PF BC8,9 CC73GCH1H270G CHIP C 27PF GC10 CK73HB1C103K CHIP C 0.010UF KC11 CK73HB1H102K CHIP C 1000PF K
C13 CC73GCH1H0R5B CHIP C 0.5PF BC14 CK73HB1H102K CHIP C 1000PF KC15 CC73HCH1H120J CHIP C 12PF JC17,18 CK73HB1H102K CHIP C 1000PF KC19 CC73HCH1H150J CHIP C 15PF J
C20 CC73HCH1H080D CHIP C 8.0PF DC21 CK73HB1H102K CHIP C 1000PF KC22 CC73HCH1H180J CHIP C 18PF JC24-26 CK73HB1H102K CHIP C 1000PF KC27 C92-0628-05 CHIP-TAN 10UF 10WV
C30 CK73HB1H102K CHIP C 1000PF K
TX-RX UNIT (X54-674X-XX)0-11 : K, K2 0-21 : M, M2 2-71 : E 2-72 : E3
TH-K2AT/K2E/K2ETPARTS LIST
18
TX-RX UNIT (X57-674X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
C33 C92-0002-05 CHIP-TAN 0.22UF 35WVC34 C92-0714-05 TANTALUM 4.7UF 6.3WVC35 C92-0001-05 CHIP-C 0.1UF 35WVC37 CK73HB1H102K CHIP C 1000PF KC38 CK73HB1C103K CHIP C 0.010UF K
C40 CK73HB1A104K CHIP C 0.10UF KC41 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC42 CK73HB1H102K CHIP C 1000PF KC43 CK73HB1C103K CHIP C 0.010UF KC44-46 CC73HCH1H101J CHIP C 100PF J
C50 CC73HCH1H220J CHIP C 22PF JC51 CC73GCH1H220J CHIP C 22PF JC52 CC73HCH1H100D CHIP C 10PF DC54 CK73HB1H102K CHIP C 1000PF KC55 CK73HB1C103K CHIP C 0.010UF K
C56 CK73HB1H102K CHIP C 1000PF KC57 CC73HCH1H100D CHIP C 10PF DC61 CK73HB1H102K CHIP C 1000PF KC64 CK73HB1H102K CHIP C 1000PF KC65 CC73HCH1H180J CHIP C 18PF J
C66 CK73GB0J105K CHIP C 1.0UF KC67 CK73HB1H102K CHIP C 1000PF KC68 CC73HCH1H180J CHIP C 18PF JC69 CC73HCH1H040C CHIP C 4.0PF CC70 CK73GB0J105K CHIP C 1.0UF K
C71 CK73HB1H102K CHIP C 1000PF KC72 CK73GB1C104K CHIP C 0.10UF KC73 CK73HB1H102K CHIP C 1000PF KC74 CC73HCH1H330J CHIP C 33PF JC75 CK73HB1H102K CHIP C 1000PF K
C76 CC73GCH1H390J CHIP C 39PF JC78 CK73HB1H102K CHIP C 1000PF KC82 CK73HB1H102K CHIP C 1000PF KC83 CK73HB1C103K CHIP C 0.010UF KC84 CK73HB1A104K CHIP C 0.10UF K
C85 ∗ C93-0766-05 CERAMIC C 56PF JC88 CC73GCH1H560J CHIP C 56PF JC89 CK73GB1H102K CHIP C 1000PF KC90-92 CK73HB1H102K CHIP C 1000PF KC93 CC73HCH1H080D CHIP C 8.0PF D
C94 CK73GB1H102K CHIP C 1000PF KC95-97 CC73GCH1H120G CHIP C 12PF GC98 CC73GCH1H080B CHIP C 8.0PF BC99 CC73GCH1H130G CHIP C 13PF GC100 CC73GCH1H070B CHIP C 7.0PF B
C101 CC73GCH1H240G CHIP C 24PF GC105-107 CK73HB1H102K CHIP C 1000PF KC108 CC73HCH1H101J CHIP C 100PF JC109-115 CK73HB1H102K CHIP C 1000PF KC116 C92-0544-05 CHIP-TAN 10UF 4WV
C117,118 CK73HB1H102K CHIP C 1000PF KC124 CK73HF1C104Z CERAMIC C 0.1UF ZC125 CC73HCH1H1R5C CHIP C 1.5PF CC126 CC73HCH1H100D CHIP C 10PF DC128 CK73HB1C103K CHIP C 0.010UF K
C129 CC73HCH1H110J CHIP C 11PF JC130 CK73HB1H102K CHIP C 1000PF KC131-133 CK73HB1C103K CHIP C 0.010UF KC134 CK73HB1H102K CHIP C 1000PF KC135 CC73HCH1H120J CHIP C 12PF J
C136 CC73HCH1H100D CHIP C 10PF DC137 CC73HCH1H050C CHIP C 5.0PF CC138 CK73HB1H102K CHIP C 1000PF KC141,142 CK73HB1H102K CHIP C 1000PF KC145 CC73HCH1H220G CHIP C 22PF G
C147 CK73HB1H102K CHIP C 1000PF KC148 CC73HCH1H220G CHIP C 22PF GC152,153 CK73HB1H102K CHIP C 1000PF KC158 CC73HCH1H220G CHIP C 22PF GC159 CC73HCH1H020B CHIP C 2.0PF B
C160 CC73HCH1H270G CHIP C 27PF GC161 CK73HB1H102K CHIP C 1000PF KC162 ∗ CC73HCH1H470G CHIP C 47PF GC163 CK73HB1H102K CHIP C 1000PF KC166 CK73HB1C103K CHIP C 0.010UF K
C167,168 CK73HB1A104K CHIP C 0.10UF KC169,170 CK73HB1A683K CHIP C 0.068UF KC171 CK73HB1H102K CHIP C 1000PF KC172 CK73HB1H182K CHIP C 1800PF KC173,174 ∗ CC73HCH1H181J CHIP C 180PF J
C175 CC73HCH1H220J CHIP C 22PF JC176 CK73HB1A104K CHIP C 0.10UF KC177 C92-0712-05 CHIP-TAN 22UF 6.3WVC178 CK73HB1C103K CHIP C 0.010UF KC179 CK73HB1A104K CHIP C 0.10UF K
C180 CC73HCH1H121J CHIP C 120PF JC182,183 CK73HB1A104K CHIP C 0.10UF KC186 CC73HCH1H240J CHIP C 24PF JC187 CC73HCH1H020C CHIP C 2.0PF CC188 CC73HCH1H240J CHIP C 24PF J
C189 CK73HB1H102K CHIP C 1000PF KC190-192 CK73HB1C103K CHIP C 0.010UF KC193 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC194 CK73HB1A104K CHIP C 0.10UF KC195 C92-0628-05 CHIP-TAN 10UF 10WV
C196,197 CK73HB1C682K CHIP C 6800PF KC198 CK73EF1C105Z CHIP C 1.0UF ZC201 CK73HB1H122K CHIP C 1200PF KC202 CK73HB1H271K CHIP C 270PF KC203 CC73HCH1H121J CHIP C 120PF J
C204 CK73HB1A333K CHIP C 0.033UF KC205 CK73HB1A473K CHIP C 0.047UF KC206 CK73HB1C153K CHIP C 0.015UF KC207 CK73HB1C103K CHIP C 0.010UF KC208 CC73HCH1H820J CHIP C 82PF J
C209 CK73HB1H102K CHIP C 1000PF KC210 CK73HB1C103K CHIP C 0.010UF KC211 CK73HB1H222K CHIP C 2200PF KC212 CK73HB1C123K CHIP C 0.012UF KC213 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C218 CK73HB1H102K CHIP C 1000PF KC219 CK73HB1A473K CHIP C 0.047UF KC220 CK73HB1E472K CHIP C 4700PF KC221,222 CK73HB1C103K CHIP C 0.010UF KC223 CK73HB1H102K CHIP C 1000PF K
C224 CK73HB1A104K CHIP C 0.10UF KC225 CK73GB0J105K CHIP C 1.0UF KC226 CK73HB1A104K CHIP C 0.10UF KC227 C92-0587-05 CHIP-TAN 2.2UF 4WVC228,229 CK73HB1A104K CHIP C 0.10UF K
TH-K2AT/K2E/K2ETPARTS LIST
19
TX-RX UNIT (X57-674X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
C230 CK73FB1C105K CHIP C 1.0UF KC231,232 CK73HB1H102K CHIP C 1000PF KC235,236 CK73HB1C103K CHIP C 0.010UF KC237 C92-0628-05 CHIP-TAN 10UF 10WVC238-241 CK73HB1H102K CHIP C 1000PF K
C242 CK73HB1C103K CHIP C 0.010UF KC243 CK73HB1H102K CHIP C 1000PF KC246 C92-1327-05 CHIP-TAN 100UF 10WVC247,248 CK73HB1A104K CHIP C 0.10UF KC249 CK73HB1H102K CHIP C 1000PF K
C250 CK73EF1C105Z CHIP C 1.0UF ZC252 CC73HCH1H101J CHIP C 100PF JC253 C92-0628-05 CHIP-TAN 10UF 10WVC255 C92-0628-05 CHIP-TAN 10UF 10WVC256,257 CK73HB1H102K CHIP C 1000PF K
C258 CK73HB1A104K CHIP C 0.10UF KC270,271 CK73HB1H102K CHIP C 1000PF KC272 CK73HB1H471K CHIP C 470PF KC276 CK73HB1H102K CHIP C 1000PF KC279-285 CK73HB1H102K CHIP C 1000PF K
C286 CK73FB1C105K CHIP C 1.0UF KC290,291 CK73HB1H102K CHIP C 1000PF KC293 CC73HCH1H470J CHIP C 47PF JC294,295 CC73HCH1H050C CHIP C 5.0PF CC297 CK73HB1A104K CHIP C 0.10UF K
C298 CK73HB1H102K CHIP C 1000PF KC299 CK73FB1C105K CHIP C 1.0UF KC300 CK73HB1H102K CHIP C 1000PF KC302 CK73HB1H102K CHIP C 1000PF KC303 C92-0605-05 TANTALUM C 150UF 6.3WV
C304-306 CK73HB1H102K CHIP C 1000PF KC307 CK73HB1A104K CHIP C 0.10UF KC308 CK73HB1H102K CHIP C 1000PF KC309 CK73FB1C105K CHIP C 1.0UF KC310 CK73EF1C105Z CHIP C 1.0UF Z
C311 CK73GB1C104K CHIP C 0.10UF KC312,313 CK73HB1A393K CHIP C 0.039UF KC314 CK73HB1H102K CHIP C 1000PF KC316 CK73GB1C104K CHIP C 0.10UF KC317,318 CK73HB1H102K CHIP C 1000PF K
C319 C92-0628-05 CHIP-TAN 10UF 10WVC320,321 CK73HB1C822K CHIP C 8200PF K K,K2C323-326 CK73HB1H102K CHIP C 1000PF KC327 CK73HB1A104K CHIP C 0.10UF KC328 CK73GB0J105K CHIP C 1.0UF K
C329 CC73FCH1H560J CHIP C 56PF JC330,331 CK73HB1H102K CHIP C 1000PF KC332 CK73HB1A104K CHIP C 0.10UF KC335,336 CK73HB1A104K CHIP C 0.10UF KC338 CK73FB1C105K CHIP C 1.0UF K
C339 CK73HB1A473K CHIP C 0.047UF KC344-348 CK73HB1H102K CHIP C 1000PF KC349 CK73HB1A104K CHIP C 0.10UF K M,M2,EC349 CK73HB1A104K CHIP C 0.10UF K E3C349,350 CK73HB1A104K CHIP C 0.10UF K K,K2
C351 CK73HB1C103K CHIP C 0.010UF KC352-354 CK73HB1H102K CHIP C 1000PF KC355,356 CK73HB1C103K CHIP C 0.010UF KC357 CK73EF1C105Z CHIP C 1.0UF ZC358 CK73HB1A473K CHIP C 0.047UF K
C359,360 CK73HB1A104K CHIP C 0.10UF KC366 ∗ CC73GCH1H101G CHIP C 100PF GC500,501 CC73HCH1H1R5B CHIP C 1.5PF BC502 CC73HCH1H030B CHIP C 3.0PF BC503 ∗ CC73GCH1H101G CHIP C 100PF G
C504 CC73HCH1H020B CHIP C 2.0PF BC505 CK73HB1A473K CHIP C 0.047UF KC506 CK73HB1H102K CHIP C 1000PF KC510 CC73HCH1H101J CHIP C 100PF J E,E3C511,512 CK73HB1H471K CHIP C 470PF K E,E3
C514 CK73GB1H471K CHIP C 470PF K E,E3C515-517 CK73HB1H471K CHIP C 470PF K E,E3
CN1 E40-5915-05 FLAT CABLE CONNECTORCN2 E40-5929-05 PIN ASSYCN6 ∗ E40-6327-05 PIN ASSYCN7 E40-5630-05 PIN ASSY SOCKETCN8 ∗ E40-6308-05 PIN ASSY
CN9 ∗ E40-6309-05 PIN ASSY SOCKETCN15 E23-1081-05 TERMINALCN17 E23-1081-05 TERMINAL E,E3J2 E03-0190-05 DC JACKJ3 ∗ E11-0484-05 3.5D PHONE JACK(3.5D)
J4 ∗ E11-0483-05 2.5D PHONE JACK(2.5D)
CN10 ∗ F01-1032-05 RADIATION PLATEF1 ∗ F53-0286-05 FUSE(2.5A/32V)F3 ∗ F53-0287-05 FUSE(0.5A/32V)
CD1 L79-1474-05 TUNING COILCF1 L72-0968-05 CERAMIC FILTERL1 L40-1001-86 SMALL FIXED INDUCTOR(10UH)L2 L41-4778-14 SMALL FIXED INDUCTORL3 L41-8278-14 SMALL FIXED INDUCTOR
L5,6 L40-1001-86 SMALL FIXED INDUCTOR(10UH)L8 ∗ L40-1285-71 SMALL FIXED INDUCTOR(120NH)L9-11 ∗ L40-8275-71 SMALL FIXED INDUCTOR(82NH)L12 L40-1075-71 SMALL FIXED INDUCTOR(10NH)L13 L92-0149-05 FERRITE CHIP
L14 ∗ L41-4778-14 SMALL FIXED INDUCTORL15 L41-6868-14 SMALL FIXED INDUCTORL16 L34-4577-05 AIR-CORE COILL17 L34-4606-05 AIR-CORE COILL18 ∗ L41-2285-14 SMALL FIXED INDUCTOR
L19 L34-4569-05 AIR-CORE COILL20 L34-4567-05 AIR-CORE COILL21-23 L34-4569-05 AIR-CORE COILL26 ∗ L41-4785-14 SMALL FIXED INDUCTORL27 ∗ L41-6885-14 SMALL FIXED INDUCTOR
L28 L40-2775-71 SMALL FIXED INDUCTOR(27NH)L29 L40-2275-71 SMALL FIXED INDUCTOR(22NH)L32 L41-8278-14 SMALL FIXED INDUCTORL35 L41-8278-14 SMALL FIXED INDUCTORL38 L41-8278-14 SMALL FIXED INDUCTOR
L40 L41-6878-14 SMALL FIXED INDUCTORL41 L41-1878-14 SMALL FIXED INDUCTORL45,46 ∗ L41-5685-14 SMALL FIXED INDUCTORL49 L92-0131-05 FERRITE CHIPL50 L92-0137-05 FERRITE CHIP
L53 L40-1575-71 SMALL FIXED INDUCTOR(15NH)L54 ∗ L40-5675-71 SMALL FIXED INDUCTOR(56NH)
TH-K2AT/K2E/K2ETPARTS LIST
20
TX-RX UNIT (X57-674X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
L55 L41-1078-14 SMALL FIXED INDUCTORL56 ∗ L41-2278-14 SMALL FIXED INDUCTORL58 ∗ L41-8285-14 SMALL FIXED INDUCTORL63 L92-0140-05 FERRITE CHIPL64 L40-4795-85 SMALL FIXED INDUCTOR(4.7UH)
L66 ∗ L40-1285-71 SMALL FIXED INDUCTOR(120NH)L68 L92-0161-05 BEADS COREX1 ∗ L77-1931-05 TCXO(12.8MHZ)X3 ∗ L77-1940-05 CRYSTAL RESONATOR(7.982MHZ)XF1 ∗ L71-0619-05 MCF(38.85MHZ)
CP1 ∗ RK75HA1J272J CHIP-COM 2.7K J 1/16WCP2 RK75GB1J392J CHIP-COM 3.9K J 1/16WCP31 RK75GB1J392J CHIP-COM 3.9K J 1/16WCP32-35 RK75HA1J102J CHIP-COM 1.0K J 1/16WR4 RK73HB1J102J CHIP R 1.0K J 1/16W
R5 RK73HB1J104J CHIP R 100K J 1/16WR6 RK73HB1J102J CHIP R 1.0K J 1/16WR7 RK73HB1J473J CHIP R 47K J 1/16WR8 RK73HB1J104J CHIP R 100K J 1/16WR9 RK73HB1J271J CHIP R 270 J 1/16W
R10 RK73HB1J470J CHIP R 47 J 1/16WR11 RK73HB1J154J CHIP R 150K J 1/16WR12 RK73HB1J470J CHIP R 47 J 1/16WR13 RK73HB1J682J CHIP R 6.8K J 1/16WR14 RK73HB1J332J CHIP R 3.3K J 1/16W
R15 RK73HB1J562J CHIP R 5.6K J 1/16WR16 RK73HB1J471J CHIP R 470 J 1/16WR17 RK73HB1J332J CHIP R 3.3K J 1/16WR18 RK73HB1J100J CHIP R 10 J 1/16WR19 RK73HB1J124J CHIP R 120K J 1/16W
R20 RK73HB1J102J CHIP R 1.0K J 1/16WR21 RK73HB1J472J CHIP R 4.7K J 1/16WR22 RK73HB1J822J CHIP R 8.2K J 1/16WR24 RK73HB1J471J CHIP R 470 J 1/16WR30 RK73HB1J122J CHIP R 1.2K J 1/16W
R31 RK73HB1J222J CHIP R 2.2K J 1/16WR32 RK73HB1J102J CHIP R 1.0K J 1/16WR33 RK73HB1J220J CHIP R 22 J 1/16WR34 RK73HB1J332J CHIP R 3.3K J 1/16WR35 RK73HB1J124J CHIP R 120K J 1/16W
R36 RK73HB1J100J CHIP R 10 J 1/16WR37,38 RK73HB1J563J CHIP R 56K J 1/16WR39 RK73HB1J271J CHIP R 270 J 1/16WR41 RK73HB1J271J CHIP R 270 J 1/16WR42 RK73HB1J101J CHIP R 100 J 1/16W
R45 RK73HB1J332J CHIP R 3.3K J 1/16WR46 RK73HB1J103J CHIP R 10K J 1/16WR47 RK73HB1J562J CHIP R 5.6K J 1/16WR49 RK73HB1J331J CHIP R 330 J 1/16WR50 RK73HB1J330J CHIP R 33 J 1/16W
R51 RK73HB1J471J CHIP R 470 J 1/16WR52 RK73HB1J102J CHIP R 1.0K J 1/16WR53,54 RK73HB1J101J CHIP R 100 J 1/16WR55 RK73HB1J471J CHIP R 470 J 1/16WR56 RK73HB1J102J CHIP R 1.0K J 1/16W
R58 RK73HB1J100J CHIP R 10 J 1/16WR59 RK73HB1J123J CHIP R 12K J 1/16WR60 RK73HB1J563J CHIP R 56K J 1/16WR61,62 RK73HB1J221J CHIP R 220 J 1/16WR64 R92-1368-05 CHIP R 0 OHM
R70-72 RK73EB2ER39K CHIP R 0.39 K 1/4WR74,75 RK73HH1J104D RESISTOR 100K D 1/16WR76-79 RK73HH1J154D RESISTOR 150K D 1/16WR80 RK73HB1J103J CHIP R 10K J 1/16WR81 RK73HB1J394J CHIP R 390K J 1/16W
R82 RK73HB1J273J CHIP R 27K J 1/16WR83 RK73HB1J563J CHIP R 56K J 1/16WR84 RK73HB1J104J CHIP R 100K J 1/16WR85 RK73GB1J561J CHIP R 560 J 1/16WR86 RK73HB1J562J CHIP R 5.6K J 1/16W
R88 RK73HB1J331J CHIP R 330 J 1/16WR90 RK73HB1J331J CHIP R 330 J 1/16WR91 RK73HB1J102J CHIP R 1.0K J 1/16WR92 RK73HB1J332J CHIP R 3.3K J 1/16WR93 RK73HB1J470J CHIP R 47 J 1/16W
R94 RK73HB1J331J CHIP R 330 J 1/16WR95 RK73HB1J104J CHIP R 100K J 1/16WR96-98 RK73HB1J823J CHIP R 82K J 1/16WR99,100 RK73HB1J105J CHIP R 1.0M J 1/16WR101 RK73HB1J470J CHIP R 47 J 1/16W
R102 R92-1368-05 CHIP R 0 OHMR103 RK73HB1J272J CHIP R 2.7K J 1/16WR104 RK73HB1J560J CHIP R 56 J 1/16WR110,111 RK73HB1J105J CHIP R 1.0M J 1/16WR115 RK73HB1J562J CHIP R 5.6K J 1/16W
R116 RK73HB1J124J CHIP R 120K J 1/16WR117 RK73HH1J272D RESISTOR 2.7K D 1/16WR118 RK73HB1J273J CHIP R 27K J 1/16WR119 RK73HB1J182J CHIP R 1.8K J 1/16WR120 RK73HB1J272J CHIP R 2.7K J 1/16W
R122 RK73HB1J272J CHIP R 2.7K J 1/16WR123 RK73HB1J182J CHIP R 1.8K J 1/16WR124 RK73HB1J332J CHIP R 3.3K J 1/16WR125 RK73HB1J561J CHIP R 560 J 1/16WR126 RK73HB1J273J CHIP R 27K J 1/16W
R127 RK73HB1J470J CHIP R 47 J 1/16WR128 RK73HB1J332J CHIP R 3.3K J 1/16WR130 RK73HB1J101J CHIP R 100 J 1/16WR131 RK73HB1J334J CHIP R 330K J 1/16WR132 RK73HB1J222J CHIP R 2.2K J 1/16W
R133 RK73HB1J102J CHIP R 1.0K J 1/16WR134 RK73HB1J394J CHIP R 390K J 1/16WR135 RK73HB1J474J CHIP R 470K J 1/16WR137 RK73HB1J472J CHIP R 4.7K J 1/16WR140 RK73HB1J184J CHIP R 180K J 1/16W
R141 RK73HB1J183J CHIP R 18K J 1/16WR142 RK73HB1J472J CHIP R 4.7K J 1/16WR143 RK73HB1J471J CHIP R 470 J 1/16WR144 R92-1368-05 CHIP R 0 OHMR145 RK73HB1J472J CHIP R 4.7K J 1/16W
R146 RK73HB1J183J CHIP R 18K J 1/16WR147 RK73HB1J471J CHIP R 470 J 1/16WR148 RK73HB1J154J CHIP R 150K J 1/16WR149 RK73HB1J473J CHIP R 47K J 1/16WR151 RK73HB1J681J CHIP R 680 J 1/16W
R152 RK73HB1J154J CHIP R 150K J 1/16WR153 RK73HB1J102J CHIP R 1.0K J 1/16WR155,156 RK73HB1J104J CHIP R 100K J 1/16WR157,158 RK73HB1J334J CHIP R 330K J 1/16WR159 RK73HB1J124J CHIP R 120K J 1/16W
TH-K2AT/K2E/K2ETPARTS LIST
21
TX-RX UNIT (X57-674X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
R160 RK73HB1J472J CHIP R 4.7K J 1/16WR161 RK73HB1J102J CHIP R 1.0K J 1/16WR162 RK73HB1J184J CHIP R 180K J 1/16WR163 RK73HB1J564J CHIP R 560K J 1/16WR164 RK73HH1J103D CHIP R 10K D 1/16W
R165,166 RK73HB1J824J CHIP R 820K J 1/16WR167,168 RK73HB1J184J CHIP R 180K J 1/16WR169 RK73GH1J104D CHIP R 100K D 1/16WR170 RK73HH1J473D RESISTOR 47K D 1/16WR171 ∗ RK73HH1J563D RESISTOR 56K D 1/16W
R172 RK73HB1J103J CHIP R 10K J 1/16WR173 RK73HB1J153J CHIP R 15K J 1/16WR174 RK73HB1J564J CHIP R 560K J 1/16WR175 RK73HB1J222J CHIP R 2.2K J 1/16WR176 RK73HB1J824J CHIP R 820K J 1/16W
R177 RK73HB1J103J CHIP R 10K J 1/16WR178 R92-1368-05 CHIP R 0 OHMR179 RK73HB1J224J CHIP R 220K J 1/16WR180 RK73HB1J393J CHIP R 39K J 1/16WR181 RK73HB1J471J CHIP R 470 J 1/16W
R182 RK73HB1J102J CHIP R 1.0K J 1/16WR183 RK73HB1J333J CHIP R 33K J 1/16WR185 RK73HB1J274J CHIP R 270K J 1/16WR186 RK73GB1J683J CHIP R 68K J 1/16WR188 RK73HB1J470J CHIP R 47 J 1/16W
R189 R92-1368-05 CHIP R 0 OHMR190,191 RK73HB1J473J CHIP R 47K J 1/16WR192 RK73HB1J471J CHIP R 470 J 1/16WR193 RK73HB1J182J CHIP R 1.8K J 1/16WR194 RK73HB1J103J CHIP R 10K J 1/16W
R195 RK73HB1J101J CHIP R 100 J 1/16WR196 RK73HB1J103J CHIP R 10K J 1/16WR197 RK73HB1J101J CHIP R 100 J 1/16WR198 RK73HB1J103J CHIP R 10K J 1/16WR199 RK73HB1J102J CHIP R 1.0K J 1/16W
R200 RK73HB1J103J CHIP R 10K J 1/16WR201 RK73HB1J472J CHIP R 4.7K J 1/16WR202 RK73HB1J473J CHIP R 47K J 1/16WR203 RK73HB1J474J CHIP R 470K J 1/16WR204 RK73HB1J184J CHIP R 180K J 1/16W
R205 RK73HB1J101J CHIP R 100 J 1/16WR206 RK73HB1J150J CHIP R 15 J 1/16WR207 RK73HB1J102J CHIP R 1.0K J 1/16WR208 RK73HB1J100J CHIP R 10 J 1/16WR209 RK73HB1J104J CHIP R 100K J 1/16W
R210 RK73FB2A120J CHIP R 12 J 1/10WR211 RK73HB1J474J CHIP R 470K J 1/16WR212 RK73HB1J103J CHIP R 10K J 1/16WR213 RK73HB1J223J CHIP R 22K J 1/16WR214 RK73HB1J103J CHIP R 10K J 1/16W
R215 RK73HB1J474J CHIP R 470K J 1/16WR216 RK73HB1J103J CHIP R 10K J 1/16WR217 RK73HB1J821J CHIP R 820 J 1/16WR218 R92-1368-05 CHIP R 0 OHMR223 RK73HB1J224J CHIP R 220K J 1/16W
R224 RK73HB1J183J CHIP R 18K J 1/16WR226 RK73HB1J221J CHIP R 220 J 1/16WR227 RK73HB1J101J CHIP R 100 J 1/16WR230 RK73HB1J221J CHIP R 220 J 1/16W K,K2,MR230 RK73HB1J221J CHIP R 220 J 1/16W M2,E3
R231 RK73HB1J151J CHIP R 150 J 1/16WR235,236 RK73HB1J102J CHIP R 1.0K J 1/16WR237 RK73HB1J104J CHIP R 100K J 1/16WR238,239 RK73HB1J102J CHIP R 1.0K J 1/16WR240 RK73HB1J104J CHIP R 100K J 1/16W
R241-243 RK73HB1J334J CHIP R 330K J 1/16WR244 R92-1252-05 CHIP R 0 OHM J 1/16WR246 RK73HB1J392J CHIP R 3.9K J 1/16WR248 RK73HB1J392J CHIP R 3.9K J 1/16WR252 RK73HB1J104J CHIP R 100K J 1/16W
R253,254 RK73HB1J102J CHIP R 1.0K J 1/16WR255 R92-1368-05 CHIP R 0 OHMR256 RK73HB1J102J CHIP R 1.0K J 1/16WR257 RK73HB1J563J CHIP R 56K J 1/16W K,K2R258 RK73HB1J681J CHIP R 680 J 1/16W K,K2
R258,259 R92-1368-05 CHIP R 0 OHM M,M2,ER258,259 R92-1368-05 CHIP R 0 OHM E3R259 RK73HB1J684J CHIP R 680K J 1/16W K,K2R260 RK73HB1J473J CHIP R 47K J 1/16W M,M2,ER260 RK73HB1J473J CHIP R 47K J 1/16W E3
R260,261 RK73HB1J473J CHIP R 47K J 1/16W K,K2R263 RK73HB1J103J CHIP R 10K J 1/16WR264 R92-1368-05 CHIP R 0 OHM M,M2,ER264 R92-1368-05 CHIP R 0 OHM E3R271 RK73HB1J120J CHIP R 12 J 1/16W
R272 RK73HB1J472J CHIP R 4.7K J 1/16WR273 RK73HB1J102J CHIP R 1.0K J 1/16WR275-277 RK73HB1J473J CHIP R 47K J 1/16WR282,283 R92-1368-05 CHIP R 0 OHMR285,286 R92-1368-05 CHIP R 0 OHM
R290,291 R92-1368-05 CHIP R 0 OHMR310 RK73HB1J392J CHIP R 3.9K J 1/16WR312 RK73HB1J472J CHIP R 4.7K J 1/16WR313 RK73HB1J332J CHIP R 3.3K J 1/16WR318 RK73HB1J102J CHIP R 1.0K J 1/16W
R323 RK73HB1J472J CHIP R 4.7K J 1/16WR324,325 RK73HB1J473J CHIP R 47K J 1/16WR326 R92-1368-05 CHIP R 0 OHMR328 RK73HB1J474J CHIP R 470K J 1/16WR330 RK73HB1J471J CHIP R 470 J 1/16W
R332 RK73FB2A150J CHIP R 15 J 1/10WR335 RK73HB1J102J CHIP R 1.0K J 1/16WR336 RK73HB1J221J CHIP R 220 J 1/16WR337 RK73HB1J471J CHIP R 470 J 1/16WR341 R92-1368-05 CHIP R 0 OHM
R342,343 R92-1252-05 CHIP R 0 OHM J 1/16WR344 RK73HB1J104J CHIP R 100K J 1/16W K,K2R345 R92-1252-05 CHIP R 0 OHM J 1/16WR346 RK73HB1J680J CHIP R 68 J 1/16WR347 RK73HB1J101J CHIP R 100 J 1/16W
R348 RK73HB1J221J CHIP R 220 J 1/16WR349 R92-1368-05 CHIP R 0 OHMR351 RK73HB1J221J CHIP R 220 J 1/16WR353 RK73HB1J333J CHIP R 33K J 1/16WR354 R92-1368-05 CHIP R 0 OHM
VR1 ∗ R32-0686-05 SEMI FIXED VARIABLE RESISTOR(500K)VR5 R32-0668-05 SEMI FIXED VARIABLE RESISTOR(50K)VR6 R32-0658-05 SEMI FIXED VARIABLE RESISTOR(100K)
S7 ∗ S70-0485-05 TACT SWITCH (PTT)
TH-K2AT/K2E/K2ETPARTS LIST
22
TX-RX UNIT (X57-674X-XX)
DestinationRef. No. Parts No. DescriptionAddressNewparts DestinationRef. No. Parts No. DescriptionAddress
Newparts
E : TH-K2E K : TH-K2AT M : TH-K2ATE3 : TH-K2ET K2 : TH-K2AT M2 : TH-K2AT
MIC1 T91-0580-05 MIC ELEMENT
D1,2 1SV325 VARIABLE CAPACITANCE DIODED5 HSC277 DIODED6 1SV305 VARIABLE CAPACITANCE DIODED7 MA2S111 DIODED8,9 HSC277 DIODE
D10 XB15A709 DIODED12,13 HVC131 DIODED14 MA2S111 DIODED15 MA8039 ZENER DIODED16 MA2S111 DIODE
D17 HSM88AS DIODED18-21 1SV305 VARIABLE CAPACITANCE DIODED22 1SS361 DIODED24 MA742 DIODED25 MA2S111 DIODE
D26 1SS388 DIODED27 RB706F-40 DIODED30 RB521S-30 DIODED31 DA221 DIODED32,33 RB051L-40 DIODE
D34 ∗ MAZS0270H ZENER DIODED35,36 RB521S-30 DIODED60 MA2S111 DIODE ED62 MA2S111 DIODE E,E3D62-65 MA2S111 DIODE K,K2
D63-65 MA2S111 DIODE M,M2D64,65 MA2S111 DIODE E,E3D69-73 MA2S111 DIODED74 DA221 DIODED79 DA221 DIODE
D80 RB521S-30 DIODEIC1 LMX2316TMX MOS ICIC2 NJM2904V MOS ICIC3 TA31136FN MOS ICIC4 ∗ XC6202PB52FR MOS IC
IC5 NJM2107F MOS ICIC6 TA7368F MOS ICIC8 ∗ 90522BPFFG139 MPUIC9 ∗ TK11250CM MOS ICIC10 ∗ S-80844CNNBB85 MOS IC
IC11 ∗ S-80930CNNBG80 MOS ICIC12 ∗ TK11250CUCB MOS ICIC15 AT25160N10SI27 ROM ICIC16 NJM2904V MOS ICIC17 NJM2902V MOS IC
Q1 2SC5066(O) TRANSISTORQ2 ∗ 2SC5488 TRANSISTORQ3 2SK1830 FETQ4 2SC4617(R) TRANSISTORQ5,6 ∗ 2SC5488 TRANSISTOR
Q9 ∗ 2SC5488 TRANSISTORQ10 2SC4926YD TRANSISTORQ11 2SK2596 FETQ12 2SK3476 FETQ13 2SK1830 FET
Q14 ∗ RN4902 TRANSISTORQ15 2SC4617(R) TRANSISTORQ16 3SK318 FET
Q17 2SK1215(E) FETQ20 2SK1830 FETQ21 2SC4617(R) TRANSISTORQ22 ∗ RN2105 TRANSISTORQ23 KTC4082 TRANSISTOR
Q24 ∗ 2SC5488 TRANSISTORQ27 2SK1830 FETQ29 2SC4919 TRANSISTORQ30 2SC4617(R) TRANSISTORQ31 2SK1830 FET
Q33 2SB1184(Q,R) TRANSISTORQ34,35 2SK1830 FETQ36 2SJ347 FETQ37 2SB1184(Q,R) TRANSISTORQ38 2SC4617(R) TRANSISTOR
Q41 ∗ RN2105 TRANSISTORQ47 RN1701 TRANSISTORQ50 2SK1830 FETQ51 ∗ RN4902 TRANSISTORQ52 ∗ RN1107 TRANSISTOR
Q53 RN2701 TRANSISTORQ55 ∗ CPH3317 FETQ56 ∗ CPH3417 FETQ57 ∗ RN2105 TRANSISTORQ58 2SK1830 FET M,M2,E
Q58 2SK1830 FET E3Q58,59 2SK1830 FET K,K2TH1 ∗ B57331V2103J THERMISTORTH3,4 B57331V2104J THERMISTOR
TH-K2AT/K2E/K2ET
23
EXPLODED VIEW (TH-K2AT / K2ET)
Parts with the exploded numbers larger than 700 are not supplied.
A B
1
2
3
3
7C
B34
35
6
40
16D
DD
29
10
8
9
15
191817
36
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
Dx2D
D EEx2D
Dx2
D
2333
39
28
14
22
Ax2
1321
E
E
54
12702. STANDARD LABEL : K, K2
701. STICKER
Fx2
1 (K2, M2)
Gx2
A : N09-1492-05B : N14-0569-04C : N14-0573-04D : N79-2035-46E : N79-2040-45F : N82-2007-46G : N09-2433-05
31
45
TH-K2AT/K2E/K2ET
24 Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW (TH-K2E)C D
1
2
3
2
7C
B34
35
6
40
16D
DD
29
10
8
9
15
191817
38
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
DD D
2333
39
28
14
22
1321
E
E
54
12
A : N09-1492-05B : N14-0569-04C : N14-0573-04D : N79-2035-46E : N79-2040-45F : N82-2007-46G : N09-2433-05
31
Dx2EEx2
D
Dx2
Ax2
701. STICKER
Fx2
Gx2
45
TH-K2AT/K2E/K2ET
25
E F
1
2
3
704. PAMPHLET
11.INSTRUCTION MANUAL(B62-1696-00)(B62-1697-00):K,E,E3(B62-1699-00):E,E3(B62-1702-00):E,E3(B62-1757-00):E,E3(B62-1758-00):E,E3
41.HELICAL ANTENNA(T90-1018-25)
43.CHARGER (120V/13.8V)(W08-0960-15) : K
42.CHARGER (230V/13.8V)(W08-0959-15) : M, E, E3
30. BELT HOOK ASSY(J29-0709-04)
32.HANDSTRAP(J69-0342-05): M, E, E3
24.ITEM CARTON CASE(H52-1960-02):K,M(H52-1961-02):E(H52-1962-02):E3
706. UK PLUG ATTACHMENT: E, E3
26.PACKING FIXTURE(H12-3146-01)
705. WARRANTY CARD : K, E, E3
PACKING (K, M, E and E3 types)
Parts with the exploded numbers larger than 700 are not supplied.
703. PAMPHLET (R & TTE) : E, E3
44.BATTERY ASSY(7.2V/1100mAh)(W09-0991-05)
TH-K2AT/K2E/K2ET
26
PACKING (K2 and M2 types)
Parts with the exploded numbers larger than 700 are not supplied.
G H
1
2
3
11.INSTRUCTION MANUAL(B62-1695-00):M2(B62-1696-00)(B62-1697-00):K2
704. PAMPHLET
25.ITEM CARTON CASE(H52-2009-02)41.HELICAL ANTENNA
(T90-1018-25)
32.HANDSTRAP(J69-0342-05) : M2
27.PACKING FIXTURE(H12-3147-03)
30.BELT HOOK ASSY(J29-0709-04)
705. WARRANTY CARD : K2
1.CABINET ASSY(BATTERY CASE)(A02-3817-02)
TH-K2AT/K2E/K2ET
27
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 thetransmission 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 thetransmission, the transceiver switches to the receptionmode, the single tone mode turns OFF.
4key (E type)
1. Press the [PTT] key on the transceiver to switch to thetransmission 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 Hzfrequencies) 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 thetransmission, the transceiver switch to the reception mode,the single tone mode is turned OFF.
• The single tone mode can be enabled only during thetransmission.
• When DTMF memory is transmitted in the single tonemode, 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 S-
meter 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 balanceM.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).
4. When the Adjustment Mode is set, the “Overvoltagewarning reference voltage (14.8V [DC IN])” adjustment itemis displayed. (The “ ” icon on the upper side of the LCDblinks while the transceiver is in the Adjustment Mode.)The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
5. The functions of transceiver keys in Adjustment Mode areas follows:
Short these two lands
SET
Adjustment item
Blink
The value stored in theEEPROM. (00-FE)
Current adjustmentvalue (00-FE)
TH-K2AT/K2E/K2ET
28
6. To exit the Adjustment Mode, turn the transceiver OFF.Note:
• When you press [LAMP] or [MONI] key, ensure the bossesof rubber keys align with the LAMP and MONI contacts ofthe PTT PCB (C/3).
• In the Adjustment Mode, Transmission and Receptionfrequencies 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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [MENU] key to write the current voltage valueinto 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 turnthe “ ” icon ON. The current voltage value is displayed atthe lower digits of the frequency display, and the valuestored in the EEPROM is displayed on the memory channelnumber 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 thetransceiver is transmitting.
(4) Press the [MENU] key to write the current voltage valueinto 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 isdisplayed at the lower digits of the frequency display, andthe value stored in the EEPROM is displayed on the memorychannel number display.
(2) Press the [MENU] key to write the current noise level valueinto 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 valueinto the EEPROM.
Key name
PTT
LAMP
MONI
MENU
F
VFO
MR
CALL
Encoder
ADJUSTMENT
[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 ONVFO modeWhen this key is pressed on the adjustment display, it switches to the frequency display.Memory modeWhen 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 andadjustment display.Increase or decrease adjustment values (00 - FE). (adjustment display)Increase or decrease frequency and memory channel number. (frequency 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 (1MHzstep). (frequency display)
TH-K2AT/K2E/K2ET
29
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 digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [MENU] key to write the current RSSI level valueinto 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 valueinto 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 digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limitfrequency)” 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 thefrequency display.
(3) Turn the encoder to display the upper frequency on theLCD.
(4) Repeat steps (4) to (6) of “1RX BPF (Lower limitfrequency)” 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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
ADJUSTMENT
TH-K2AT/K2E/K2ET
30
(8) Press the [MENU] key to write the current APC value intothe 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limitfrequency)” 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 thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limitfrequency)” 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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
(8) Press the [MENU] key to write the current APC value intothe 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limitfrequency)” 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 thefrequency display.
(3) Turn the encoder to display upper limit frequency on theLCD.
(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limitfrequency)” 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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
ADJUSTMENT
TH-K2AT/K2E/K2ET
31
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thetransceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjustthe transmission power.
(8) Press the [MENU] key to write the current APC value intothe 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.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (8) of ”17.5V TX L power (Lower limitfrequency)” 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 thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX L power (Lower limitfrequency)” 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.
The current APC value is displayed at the lower digits ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thefrequency 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 thefrequency display.
(3) Turn the encoder to display upper limit frequency on theLCD.
(4) Repeat steps (4) to (7) of ”113.8V TX H power (Lowerlimit frequency)” described on page 31.
ADJUSTMENT
TH-K2AT/K2E/K2ET
32
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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lowerlimit 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 thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lowerlimit 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 ofthe frequency display, and the value stored in the EEPROMis displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of ”113.8V TX L power (Lower limitfrequency)” 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.
ADJUSTMENT
TH-K2AT/K2E/K2ET
33
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of ”113.8V TX L power (Lower limitfrequency)” 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, a100Hz square waveform is internally generated andmodulated.
(3) While observing the waveforms on the oscilloscope, turnthe semi-fixed volume (VR6) to adjust the DCS modulationwaveform to a square waveform.
(4) When the DCS modulation waveform becomes a squarewaveform, 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 andthen the [PTT] key repeatedly to turn the “ ” icon ON.The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe 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 andmodulated.
(6) Turn the encoder to change the current adjustment valueand adjust tone deviation.
(7) Press the [MENU] key to write the current adjustment valueinto 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 andthen the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of ”1Tone deviation (Lower limitfrequency)” 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 andthen the [PTT] key repeatedly to turn the “ ” icon ON.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of ”1Tone deviation (Lower limitfrequency)” 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 andthen the [PTT] key repeatedly to turn the “ ” icon ON.The current adjustment value is displayed at the lower digitsof the frequency display, and the value stored in theEEPROM is displayed on the memory channel numberdisplay.
(2) Press the [VFO], [MR] or [CALL] key to switch to thefrequency display.
(3) Turn the encoder to display the lower limit frequency onthe LCD.
ADJUSTMENT
TH-K2AT/K2E/K2ET
34
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 andmodulated.
(6) Turn the encoder to change the current adjustment valueand adjust DCS deviation.
(7) Press the [MENU] key to write the current adjustment valueinto 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 thefrequency display.
(3) Turn the encoder to display the center frequency on theLCD.
(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limitfrequency)” 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 thefrequency display.
(3) Turn the encoder to display the upper limit frequency onthe LCD.
(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limitfrequency)” 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 turnthe “ ” icon ON.The current microphone input level value is displayed atthe lower digits of the frequency display, and the valuestored in the EEPROM is displayed on the memory channelnumber display.
(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
35
ADJUSTMENT
1.Setting and Connect the optional PG-2W LCD total illumination display Initial configuration displayed afterresetting DC cable to the power supply. the full-reset.
DC IN terminal voltage: 13.8V1) Total illumination display
confirmationTurn 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-resettingAfter confirming that all LCD segments have lighted described in the Step 1 above, releasethe [F] key, and then press the [F] key twice while “FL.RST?” appears on the display.
2 VCO After removing 3 screws fixingLock voltage the TX-RX unit (B/3), removeCheck the TX-RX (B/3) unit from the
CN9 connector of the TX-RXunit (A/3).1) Frequency: 136.000MHz DVM TX-RX LV Check 0.7V or more
RX 2) Frequency: 173.990MHz (A/3) 4.3V or less TX TX power: Low
1) Frequency: 136.000MHz 0.7V or morePTT: ON
2) Frequency: 173.990MHz 4.3V or lessPTT: ONAfter observing the VCOlock voltage, connect theTX-RX unit (B/3) to theoriginal position.
3.TX frequency 1) TX power: Low f. counter ANT TX-RX VR1 145.990MHz ±150HzAdjust Frequency: 145.990MHz (A/3)
PTT: ON4.Overvoltage Switch to Adjustment mode
warning and carry out the operationsreference for adjustment item A.voltage (Refer to page 28)Adjust/Check 1) LCD display: DC DC power supply [MENU] Write
Frequency: 145.050MHz(E, E3)
Frequency: 146.050MHz(K, K2, M, M2)
DC IN terminal voltage: 14.8VTo exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.2) Frequency: 145.050MHz Check Alarm sound and
(E, E3) display “DC ERR”Frequency: 146.050MHz message.
(K, K2, M, M2)DC IN terminal voltage: 17.5V
Common Section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
TH-K2AT/K2E/K2ET
36
ADJUSTMENT
Receiver section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
1.RX BPF Squelch level: 0 Adjust 1) Frequency: 145.050MHz SSG TX-RX ANT VOL Turn the VOL knob 0.63V
(E, E3) Oscilloscope (A/3) SP knob to obtain 0.63V AFFrequency: 146.050MHz Distortion meter output.
(K, K2, M, M2) AF V.MSSG output: –53dBm (501 uV) Dummy loadSSG MOD: 1kHzSSG DEV: 3kHz
Switch to Adjustment modeand carry out the operationsfor adjustment item E.(Refer to page 29)2) LCD display: BPL Encoder Write Max Sensitivity
Frequency: 136.050MHz [MENU]SSG: –119dBm (0.25 uV)
3) SSG: –113dBm (0.501 uV) Check 12dB SINAD ormore
4) LCD display: BPC Encoder Write Max SensitivityFrequency: 146.050MHz [MENU]SSG: –119dBm (0.25 uV)
5) SSG: –120dBm (0.22 uV) Check 12dB SINAD ormore
6) LCD display: BPH Encoder Write Max SensitivityFrequency: 160.050MHz [MENU]SSG: –119dBm (0.25 uV)
7) SSG: –113dBm (0.501uV) Check 12dB SINAD ormore
2.IF response 1) Frequency : 144.050MHz SSG Check 12dB SINAD orCheck SSG Frequency: 221.750MHz Oscilloscope less
SSG output: –60dBm (224uV) Distortion meter Note: If theSSG MOD: 1kHz specification is notSSG DEV: 3kHz satisfied, repeat theAF output: 0.63V/8Ω operations for
“1. RX BPFAdjust”.
3.Squelch / Switch to Adjustment mode SSG ANTS-meter and carry out the operationsWrite for adjustment item C.
(Refer to page 28)1) LCD display: SQ1 [MENU] Write Note: In the
Frequency: 145.050MHz Squelch adjust(E, E3) ments, all 4
Frequency: 146.050MHz adjusting points(K, K2, M, M2) including the S-
SSG: –125dBm (0.126uV) meter must be2) LCD display: SQ2 [MENU] Write adjusted.
Frequency: 145.050MHz
Squelch(E, E3)
Frequency: 146.050MHz(K, K2, M, M2)
SSG: –120dBm (0.22uV)
TH-K2AT/K2E/K2ET
37
ADJUSTMENT
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
Switch to Adjustment modeand carry out the operationsfor adjustment item D.(Refer to page 29)
S-meter 3) LCD display: S1 SSG TX-RX ANT [MENU] WriteFrequency: 145.050MHz (A/3)
(E, E3)Frequency: 146.050MHz
(K, K2, M, M2)SSG: –120dBm (0.22uV)
4) LCD display: S9 [MENU] WriteFrequency: 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 SSG Check Open Squelch
(E, E3) OscilloscopeFrequency: 146.050MHz Distortion meter
(K, K2, M, M2)SSG output: –123dBm (0.158uV)SSG MOD: 1kHzSSG DEV: 3kHz
2) SSG: OFF Close Squelch5.S-meter 1) Frequency: 145.050MHz SSG Check Two segments
Check (E, E3) in S-meterFrequency: 146.050MHz light.
(K, K2, M, M2)
SSG output: –120dBm (0.22uV)2) SSG output: –105dBm (1.26uV) All segments in
S-meter light.
6.Hum and 1) Frequency: 145.050MHz SSG TX-RX ANTnoise ratio (E, E3) Oscilloscope (A/3) SPCheck Frequency: 146.050MHz Distortion meter
(K, K2, M, M2) AF V.MSSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzAF Output: 0.63V/8ΩAF V.M = 0dB
2) SSG DEV: OFF Check –38dB or less7.AF distortion 1) Frequency: 145.050MHz Check 5% or less
Check (E, E3)Frequency: 146.050MHz
(K, K2, M, M2)SSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzAF Output: 0.63V/8Ω
TH-K2AT/K2E/K2ET
38
ADJUSTMENT
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
8.AF output 1) Frequency: 145.050MHz SSG TX-RX ANT Check 400mW or moreCheck (E, E3) Oscilloscope (A/3) SP
Frequency: 146.050MHz Distortion meter(K, K2, M, M2) AF V.M
SSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzAF distortion: 10%
9.Current Squelch level: 5Drain 1) Frequency: 145.050MHz SSG Check 80mA or lessCheck (E, E3) Am meter
Frequency: 146.050MHz(K, K2, M, M2)
SSG output: OFF2) Frequency: 145.050MHz 400mA or less
(E, E3)Frequency: 146.050MHz
(K, K2, M, M2)SSG output: –53dBm (501uV)SSG MOD: 1kHzSSG DEV: 3kHzVOL knob: Max
Transmitter section
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
1.TX powerWrite (Batteryterminal: 7.5V)
High power
Mid power
Battery terminal voltage:7.5V
Switch to Adjustment modeand carry out the operationsfor adjustment item F.(Refer to page 29)1)LCD display: P7L,
Frequency: 144.000MHzPTT: ON
2)LCD display: P7C, Frequency: 145.000MHzPTT: ON
3) LCD display: P7H, Frequency: 145.995MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item G.(Refer to page 30)4)LCD display: P7L,
Frequency: 144.000MHzPTT: ON
5) LCD display: P7C, Frequency: 145.000MHz PTT: ON
DC power supplyDVM
Power meterAm meter
TX-RX(A/3)
BGND
ANT Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Write
Write
Write
Write
Write
Note: Do notuse the DC INterminal.
4.8W ±0.05W2.0A or less
1.5W ±0.05W1.4A or less
Note: Adjust the output voltage from DC power supply until the voltage at the battery terminal be-comes 7.5V while the transceiver is transmitting.
TH-K2AT/K2E/K2ET
39
ADJUSTMENT
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
Mid power
Low power
2.TX powerWrite (DC INterminal: 13.8V)
High power
Mid power
Low power
6) LCD display: P7H, Frequency: 145.995MHz PTT: ONSwitch to Adjustment modeand carryout the operationsfor adjustment item H.(Refer to page 30)7)LCD display: P7L,
Frequency: 144.000MHzPTT: ON
8)LCD display: P7C, Frequency: 145.000MHzPTT: ON
9)LCD display: P7H, Frequency: 145.995MHzPTT: ON
Connect the optional PG-2WDC cable to the power supply.DC IN terminal voltage: 13.8VSwitch to Adjustment modeand carry out the operationsfor adjustment item I.(Refer to page 31)1)LCD display: P13L,
Frequency: 144.000MHzPTT: ON
2)LCD display: P13C, Frequency: 145.000MHzPTT: ON
3)LCD display: P13H, Frequency: 145.995MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item J.(Refer to page 31)4)LCD display: P13L,
Frequency: 144.000MHzPTT: ON
5)LCD display: P13C, Frequency: 145.000MHzPTT: ON
6)LCD display: P13H, Frequency: 145.995MHzPTT: ON
Switch to Adjustment modeand carry out the operationsfor adjustment item K.(Refer to page 32)7) LCD display: P13L, Frequency: 144.000MHz PTT: ON
Power meterAm meter
DC power supplyDVM
Power meterAm meter
TX-RX(A/3)
TX-RX(A/3)
ANT
DC IN
ANT
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
0.5W ±0.05W0.8A or less
5.0W - 5.1W2.0A or less
1.5W ±0.05W1.4A or less
0.5W ±0.05W0.8A or less
TH-K2AT/K2E/K2ET
40
ANT
ANT
ANTMIC
Encoder[MENU]
Encoder[MENU]
[MENU]LCD
LCD
VR6
VR5
Write
Write
WriteCheck
Check
By tuning theVR6, adjustthe modulationwave untilif becomes thesquare wave.4.2kHzAccording to thelarger +, –.
0.5W ±0.05W0.8A or less
All segmentsare lighted.
4 to 6 seg-ments arelighted. ~
±0.1kHz
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
Low power
3.BatteryterminalreferencevoltageAdjust/Check
4.DCSmodulationbalance
5.MAX DEV
8) LCD display: P13C, Frequency: 145.000MHz PTT: ON9) LCD display: P13H, Frequency: 145.995MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item B.(Refer to page 28)TX power: Low1)LCD display: BAT
Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
PTT: ONBattery terminal voltage: 7.5V
To exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.2)Frequency: 145.000MHz
(E, E3)Frequency: 146.000MHz
(K, K2, M, M2)PTT: ONBattery terminal voltage: 6.4V
Switch to Adjustment modeand carry out the operationsfor adjustment item L.(Refer to page 32)Detector: +P, –PHPF: OFF LPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DCS.BAL
Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
PTT: ONTo exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.MIC terminal inputAG: 1kHz/80mVDetector: +P, –PHPF: OFF LPF: 15kHzDe-emphasis: OFFTX power: Low
Power meterAm meter
DC power supplyDVM
Linear detectorOscilloscope
Linear detectorAGOscilloscope
TX-RX(A/3)
TX-RX(A/3)
ADJUSTMENT
(Adjust the output voltage from DC power supply until the voltage at thebattery terminal becomes 7.5V while the transceiver is transmitting.)
(Adjust the output voltage from DC power supply until the voltage at thebattery terminal becomes 6.4V while the transceiver is transmitting.)
TH-K2AT/K2E/K2ET
41
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
6.MICsensitivity
Check
7.Tonedeviation
8.DCSdeviation
1)Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
PTT: O NMIC terminal inputAG: 1kHzDetector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low1)Frequency: 145.000MHz
(E, E3)Frequency: 146.000MHz
(K, K2, M, M2)PTT: ON
Switch to Adjustment modeand carry out the operationsfor adjustment item M.(Refer to page 33)Detector: P-P/2HPF: OFFLPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DVL,
Frequency: 144.000MHzPTT: ON
2)LCD display: DVC, Frequency: 145.000MHzPTT: ON
3)LCD display: DVH, Frequency: 145.990MHz PTT: ONSwitch to Adjustment modeand carry out the operationsfor adjustment item N.(Refer to page 33)Detector: +P HOLDHPF: OFFLPF: 3kHzDe-emphasis: OFFTX power: Low1)LCD display: DVL,
Frequency: 144.000MHzPTT: ON
2)LCD display: DVC, Frequency: 145.000MHzPTT: ON
3)LCD display: DVH, Frequency: 145.990MHzPTT: ON
Linear detectorAGOscilloscope
Linear detector
TX-RX(A/3)
ANTMIC
ANT
VR5
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
Encoder[MENU]
4.2kHzAccording to thelarger +, –.
Change the AGoutput level toobtain 3kHzdeviation.
Write
Write
Write
Write
Write
Write
±0.1kHz
4mV - 12mV
0.8kHz ±50Hz
0.8kHz ±50Hz
ADJUSTMENT
TH-K2AT/K2E/K2ET
42
9.VOXSensitivityWrite
10. VOXOperationCheck
11. DTMFDEVCheck
12. 1750HzTone DEVCheck
(E, E3 typesonly)
13. ProtectionCheck
(DC INterminal: 13.8V)
Switch to Adjustment modeand carry out the operationsfor adjustment item O.(Refer to page 34)TX power: Low1)LCD display: VOX1
Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
AG: 1kHz/80mV2)LCD display: VOX9
Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
AG: 1kHz/1.5mVTo exit from the AdjustmentMode, turn the transceiverpower OFF and then ON.1)Frequency: 145.000MHz
(E, E3)Frequency: 146.000MHz
(K, K2, M, M2)VOX Gain: 4AG: OFF
2)AG: 1kHz/100mVDetector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low
1)Frequency: 145.000MHz(E, E3)
Frequency: 146.000MHz(K, K2, M, M2)
Send DTMF code “D”
Detector: P-P/2HPF: OFFLPF: 15kHzDe-emphasis: OFFTX power: Low1)Frequency: 145.000MHz
(E, E3)Send 1750Hz Tone
TX power: High1)Frequency: 145.000MHz
(E, E3)Frequency: 146.000MHz
(K, K2, M, M2)ANT: OPENPTT: ON
AG
Linear detector
Am meter
Write
Write
Check
Check
Check
Check
Does nottransmit.
Transmits.
2.0kHz - 4.2kHz
2.5kHz - 4.5kHz
2.4A or less
Item ConditionMeasurement Adjustment Specifications/
Test equipment Unit Terminal Unit Parts Method Remarks
MIC
ANT
TX-RX(A/3)
[MENU]
[MENU]
ADJUSTMENT
Note: For details of sending DTMF code “D”,refer to the “Single Tone Mode” on page 27.
TH-K2AT/K2E/K2ET
43
ADJUSTMENT / TERMINAL FUNCTION
Adjustment points
TX-RX unit (A/3)
Component side view
J2DC IN
J3MIC
J4SP
VR1
VR5
VR6
LV
B
LCD
ANT
BTEMP
GND
SET
TX-RX UNIT (A/3)Component side view
CN1 1 GND GND2 Vol-OUT RX audio volume output3 Vol-IN RX audio volume input4 EN2 Encoder 25 GND GND6 EN1 Encoder 1
CN2 1 SPK Internal speaker audio2 SPG Audio ground
CN6, 1 PTT PTTCN7 2 KIN4 Key matrix input
3 KYO2 Key matrix output (MONI key)4 KYO1 Key matrix output (LAMP key)5 BL LCD backlight control6 GND GND
CN8, 1 KIN1 Key matrix inputCN9 2 IM Internal microphone
3 KYO3 Key matrix output4 8M 8V power supply5 KIN4 Key matrix input6 MIG Microphone ground7 LAMP Key illumination control8 GND GND9 KYO0 Key matrix output10 KIN2 Key matrix input11 KYO1 Key matrix output12 KIN0 Key matrix input13 KYO2 Key matrix output14 KIN3 Key matrix input
CN No. Pin No. Pin Name Function
TX-RX UNIT (A/3) : TX-RX↔VOL/ENC
TERMINAL FUNCTION
TX-RX UNIT (A/3) : TX-RX↔Internal speaker
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (B/3) : 10KEY
TX-RX UNIT (A/3) : TX-RX↔TX-RX UNIT (C/3) : PTT
VR1 : TX frequencyVR5 : MAX DEVVR6 : DCS modulation valanceLV : VCO lock voltage terminal
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
C24
R210
C25
R211
C26
R212
C27
R213
R214
R215
R216
R218
C30
C33
C34
C35
C37
C38
C40
C41
C42
C43
C44
C45
R231
C46
C50
C51 C
52
C203
C54
C204
C55
C56
C57
C211 C212
C213
R252
Q12
C66
Q13
Q14
R255
Q15
R257 R
258
R259
C70
R260
Q20
R261
Q21Q22
Q23
C78
Q24
R264
Q27
C85
R272
Q34
Q35
Q36
C1 Q51
Q59
D7
C271
C272
F1F3
XF1
TH1
TH3
D14
D15
D16
R115
R116
R117
R118R119
R120
R122
R123
R124
R125
R126
R127
R128
D31
R323
R324
R131
R132
R133
R134
R135
R137
R330
R332
R140
R141
C105
R142
C106
R143
C107
R144
C108
R145
C109
R146
R147
R148
R149
C110
IC1
C111 IC2
C112
IC3
C113
C114
R344
R151
C115
R152
C116
R153
C117
C
R157
D60
R158
R159
C506
D62
D63
D64
R351
D65
C318
C125
D69
C126
C510
C128
R18
R165
R19
R166
R167
C514
D70
R168
C320
C515
D71
C321
C516
D72
R20
L45
R21
L46
C328
R17
R24
+
+
+
+
+
R171
Q4
Q6
D80
C331
L53
R30
R31
R32
R33
L58
R34
C339
R35
R36
R37
R38
R188
R189
L64
L68
VR1
C349
VR
5
VR6
C350
C351
C161
C356
C166
C167
C168
R58
C169
C170
C171
C172
C173
C174
C175
C176
C180
R70
R71
C182
R72
C183
R74
R75
C186
R76
C187
R77
C188
R78
C189
R79
C190 R80
C191
R81
C192 R82
R83
C193
R84
C194
C195
R85
C196
R86
C197
C198
R90
CN9
X1
CP
1
CP
2
IC17
178 14
LV
BB
TE
MP
GN
D
1
8 9
16
D
G
G
S
S D
+
134 6
DS
G
1
8 9
16 1 13K
YO
2K
YO
1K
YO
0LA
MP
KIN
4K
YO
3K
IN1
KIN
3K
IN0
KIN
2G
ND
MIG
8MIM
142
+
DCS BAL
1
45
8
DS
G
DS G
J2DC IN
FREQ
+
DS
G
MA
X D
EV
SET
134 6
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
CN6
G D
S
S
+
G SD
44
TH-K2AT/K2E/K2ET 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
Ref. No. Address
IC1 4D
IC2 8F
IC3 9B
IC6 6M
IC9 9P
IC10 6P
IC11 6Q
IC15 7P
Ref. No. Address
IC17 9J
Q4 4C
Q6 3E
Q12 5J
Q13 7F
Q14 9E
Q15 5E
Q20 10E
Ref. No. Address
Q21 10D
Q22 10D
Q23 6B
Q24 8D
Q27 6H
Q31 6L
Q34 9F
Q35 10F
Ref. No. Address
Q36 10E
Q37 8L
Q38 7K
Q41 9Q
Q47 7S
Q51 4H
Q53 9Q
Q55 5P
Ref. No. Address
Q56 7L
Q57 8Q
Q59 8J
D7 4B
D14 8E
D15 9D
D16 4D
D25 6K
Ref. No. Address
D26 7L
D31 9F
D34 7L
D40 7S
D41 7S
D60 3H
D62 3H
D63 3H
Ref. No. Address
D64 4H
D65 4H
D69 3G
D70 3H
D71 3H
D72 3G
D80 10G
R172
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R217
R223
R224
R226
R227
R236
R237
R238
C203
204
R242
R243
R246 R248
3
R252
12
R260
R261
R263
R264
C85
Q31
R276
Q38
Q41
C246
C247
C248
C249
Q47
C250
C252
C253
C255
C256
Q53
C257
C258
Q55
Q57
Q59
C279
C280
C290
C291TH1
D25
D26
D34
CP
34C
P35
R328
D40
D41
R335
C300
C302
C304
C305
C306
C307
C308
R344
C309
IC6
C118
R349
IC9
R157
R158
C310
C311
R159
C312
C313
C317
R354
C318
C319
C510
R165
R166
R170
L49
–+
R171
C331
R244
L63
C344
C345
C346
C347
C348
C354
C355
C359
C360
R86
R202
R203
IC10R204
IC11
R205
R206
R207
R208
R209
IC17
114
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
CN6
D
S
S
+
G SD
J3MIC
Q37
B
E
C
G
S
D
Q56
G
SD
+
+
POWER
156 10
CN
2IN
T. SP
+
J4SP
1 346
1
23
4
G
S
D
123 4
+
1
4 5
8
IC15
1
34
5
1 345
J72-0883-09 (A/3)
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG3136
COM01
COM1
COM2LCD
ANT
45
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
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
PC BOARD TH-K2AT/K2E/K2ET
R172
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R235
R239 C297
R240R241
C206
C207
R253
R254
R256
Q17
C223
C224
C226
C227
C228
C229
Q29
C230
C231
C232
C82
Q30
C235
C236
C237
C88
C238
R275
C89
C239
R277
C90
C240
C91
C241
C92
C242
C93
C94
C95
R282
C96
R283
C97
C98
R285
C99
R286
R290
R291
Q52
C281
C283
C284
C285
C286
C293 C294
C295
C298
C299
TH
4
CN
10
R102
SD
G
R103
R104
CN15
CN
17D10
D12
D13
D17
R110
R111
D20
D21
D22
R310
D24
R312
R313
D27
R318
CP
31
D36
CP32 CP33
R325
R326
C100
C101
L16
L17
L18
L19
L20
L21
L22
L23
C303
R342
R343
IC4
R345C502
C503
C504
C505
C314
C316
R353
L38
R
R162
R
C511
C512
L40
L41
C517
D74
D79R17
C330
R179C332 C335 C336
R180
R181
R182
R183
R186
R185
C152
C153
R190
R191
R192
R193
R194
C158
C159
R195
R196
R197
R198
R199
C160C162
C163
C357
C358
R61
C366
R62
CN1
X3
R200
R201
IC12
1
43
6
1 6E
NC
AG
ND
EN
CB
VO
L INV
OL O
UT
GN
D
+ 1
2
3
4
IC8
3031
1120
90
91
6061
+
15
J72-0883-09 (A/3)
46
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
Ref. No. Address
IC4 10E
IC5 10K
IC8 7E
IC12 6B
IC16 8L
Q1 4P
Q2 3O
Q3 3P
Ref. No. Address
Q5 3N
Q9 4N
Q10 5N
Q11 6M
Q16 4L
Q17 3J
Q29 10J
Q30 8J
Ref. No. Address
Q33 9N
Q52 7G
Q58 6L
D1 3R
D2 3R
D5 2Q
D6 3Q
D8 4M
Ref. No. Address
D9 3M
D10 3G
D12 3G
D13 3G
D17 3F
D18 2L
D19 2K
D20 3I
Ref. No. Address
D21 3H
D22 10J
D24 8I
D27 9J
D30 8N
D32 8M
D33 8N
D35 7N
Ref. No. Address
D36 9D
D73 7N
D74 11I
D79 11I
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C201
C202
C205
C206
C207
C208
C209
C210
C61
C64
Q10
C65
Q11
C67
C218
C68
C69
C219
Q16
Q17
C220
C71
C221
C222
C72
C73
C223
C74
C224
C75
C225
C76
C226
C227
C228
29
Q29
C231
C82
C83
C84
Q30
R271
R273
Q33
C90
C2
C3
C4
C5
C6
C7C
8
C9
D1
D2
Q58
D5
D6
D8
D9
C270
C276
C282
R100
CN
10R
101
R102
SD
G
R103
R104
D18
D19
D27
L1
L2
L3
L5
L6
L8
D30
L9
D32
D33
D35
R130
L10C
D1
L11
L12
L13
L14
L15
L16
R341
L26
L27
L28
5
IC5
L29
R346
R347
R348
C500 C501
R155 R156
C503
CF1
L32
R10
L35
R11
R12
R13
C124
R160
R14
R161
R15
R162
R16
R163
R17
R164
C129
D73
C323
C324
C130
C325
C131
C326
C132
R22
C327
C133
C134C329
C135
Q1
C136
Q2
R173
C137
Q3
C138
R174
R175
Q5
R176
R177
R178
L50
R179
Q9
L54
L55
C141
L56
C142
C338
R180
R181
C145
R182
C147
183
C148
R4R5
R39
R6
R7
R8
R9
R41
L66
C152
R42
C153
R45
R46
R47
R49
C352
C353
R50
R51
R52
R53
R54
C358
R55R56
R59
R60
C366
R62
R64
C177
C178
C179
R88
R91
R92R93
R94
R95
R96
R97
R98
R99
C10
C11
C13
C14
C15
C17C18
C19
1 345
IC16
1
45
8
DSG
1
23
4
1
2 3
4
GSD
E
B
C
+
DSG
LV
B
R169
47
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
PC BOARD TH-K2AT/K2E/K2ETTX-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
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
C21
C22
C24
R210
C25
R211
C26
R212
C27
R213
R214
R215
R216
R217
R218
C30
C33
C34
C35
C37
R223
C38
R224
R226
R227
C40
C41
C42
C43
C44
C45
R231
C46
R236
R237
R238
C50
C51 C
52
C203
C54
C204
C55
R242
C56
R243
C57
R246 R248
C211 C212
C213
R252
Q12
C66
Q13
Q14
R255
Q15
R257 R
258
R259
C70
R260
Q20
R261
Q21Q22
R263
Q23
C78
Q24
R264
Q27
C85
Q31
R272
Q34
Q35
R276
Q36
Q38
Q41
C246
C247
C248
C249
C1
Q47
C250
C252
C253
C255
Q51
C256
Q53
C257
C258
Q55
Q57
Q59
D7
C271
C272
C279
F1F3
C280
C290
C291
XF1
TH1
TH3
D14
D15
D16
R115
R116
R117
R118R119
D25
D26
R120
R122
R123
R124
R125
R126
R127
R128
D31
D34
R323
CP
34
R324
CP
35
R131
R132
R133
R328
R134
R135
R137
D40
D41
R330
R332
R140
R141
C105
R335
R142
C106
R143
C107
R144
C108
R145
C109
R146
R147
R148
C300
R149
C302
C110
C304
IC1
C111
C305
IC2
C112
C306
IC3
C113
C307
C114
C308
R344
C309
R151
C115
R152
IC6
C116
R153
C117
C118
R349
IC9
R157
D60
R158
C310
C311
R159
C506
D62
C312
D63
C313
D64
R351
D65
C317
R354
C318
C319
C125
D69
C126
C510
C128
R18
R165
R19
R166
R167
C514
D70
R168
C320
C515
D71
C321
C516
D72
R20
L45
R21
L46
C328
R170
R24
+
+
+
+
+
L49
–+
R171
Q4
Q6
D80
C331
R244
L53
R30
R31
R32
R33
L58
R34
C339
R35
R36
R37
R38
R188
R189
L63
L64
C344
C345
C346
C347
L68
C348
VR1
C349
VR
5
VR6
C350
C351
C354
C161
C355
C356
C359
C166
C167
C168
R58
C169
C360
C170
C171
C172
C173
C174
C175
C176
C180
R70
R71
C182
R72
C183
R74
R75
C186
R76
C187
R77
C188
R78
C189
R79
C190 R80
C191
R81
C192 R82
R83
C193
R84
C194
C195
R85
C196
R86
C197
C198
R90
CN9
X1
CP
1
CP
2
R202
R203
IC10R204
IC11
R205
R206
R207
R208
R209
IC17
178 14
LV
BB
TE
MP
GN
D
1
8 9
16
D
G
G
S
S D
+
134 6
DS
G
1
8 9
16 1 13K
YO
2K
YO
1K
YO
0LA
MP
KIN
4K
YO
3K
IN1
KIN
3K
IN0
KIN
2G
ND
MIG
8MIM
142
+
DCS BAL
1
45
8
DS
G
DS G
J2DC IN
FREQ
+
DS
G
MA
X D
EV
SET
134 6
1 5
2 6G
ND
KY
O1
KIN
4
BL
KY
O2
PT
T
CN6
G D
S
S
+
G SD
J3MIC
Q37
B
E
C
G
S
D
Q56
G
SD
+
+
POWER
156 10
CN
2IN
T. SP
+
J4SP
1 346
1
23
4
G
S
D
123 4
+
1
4 5
8
IC15
1
34
5
1 345
J72-0883-09 (A/3)
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG3136
COM01
COM1
COM2LCD
ANT
44 45
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
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
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
PC BOARD TH-K2AT/K2E/K2ET
Ref. No. Address
IC1 4D
IC2 8F
IC3 9B
IC6 6M
IC9 9P
IC10 6P
IC11 6Q
IC15 7P
Ref. No. Address
IC17 9J
Q4 4C
Q6 3E
Q12 5J
Q13 7F
Q14 9E
Q15 5E
Q20 10E
Ref. No. Address
Q21 10D
Q22 10D
Q23 6B
Q24 8D
Q27 6H
Q31 6L
Q34 9F
Q35 10F
Ref. No. Address
Q36 10E
Q37 8L
Q38 7K
Q41 9Q
Q47 7S
Q51 4H
Q53 9Q
Q55 5P
Ref. No. Address
Q56 7L
Q57 8Q
Q59 8J
D7 4B
D14 8E
D15 9D
D16 4D
D25 6K
Ref. No. Address
D26 7L
D31 9F
D34 7L
D40 7S
D41 7S
D60 3H
D62 3H
D63 3H
Ref. No. Address
D64 4H
D65 4H
D69 3G
D70 3H
D71 3H
D72 3G
D80 10G
R172
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R235
R239 C297
C201
C202
R240R241
C205
C206
C207
C208
C209
C210
C61
C64
Q10
C65
Q11
C67
R253
C218
C68
R254
C69
C219
R256
Q16
Q17
C220
C71
C221
C222
C72
C73
C223
C74
C224
C75
C225
C76
C226
C227
C228
C229
Q29
C230
C231
C232
C82
C83
C84
Q30
R271
C235
C236
R273
C237 Q33
C88
C238
R275
C89
C239
R277
C90
C240
C91
C241
C92
C242
C93
C94
C95
R282
C96
R283
C97
C98
R285
C99
R286
C2
C3
C4
C5
C6
C7C
8
C9
R290
R291
Q52
D1
D2
Q58
D5
D6
D8
D9
C270
C276
C281
C282
C283
C284
C285
C286
C293 C294
C295
C298
C299
TH
4
R100
CN
10R
101
R102
SD
G
R103
R104
CN15
CN
17
D10
D12
D13
D17
D18
R110
D19
R111
D20
D21
D22
R310
D24
R312
R313
D27
L1
L2
L3
R318
L5
L6
L8
D30
L9
D32
D33
D35
CP
31
D36
CP32 CP33
R130
R325
R326
L10C
D1
L11
L12
L13
L14
C100
L15
C101
L16
L17
L18
L19
L20
L21
L22
L23
C303
R341
R342
L26
R343
L27
IC4
L28
R345
IC5
L29
R346
R347
R348
C500 C501
R155
C502
R156
C503
C504
C505
CF1
L32
C314
R10
L35
R11
C316
R12
R353
R13
C124
R160
L38
R14
R161
R15
R162
R16
R163
R17
R164
C511
C129
C512
L40
L41
C517
D73
C323
D74
C324
C130
C325
C131
C326
C132
R22
C327
C133
C134
D79
C329
C135
Q1
C136
Q2
R173
C137
Q3
C138
R174
R175
Q5
R176
R177
C330
R178
L50
R179
Q9
C332
L54
C335
L55
C141
C336L56
C142
C338
R180
R181
C145
R182
C147
R183
C148
R4
R186
R185
R5
R39
R6
R7
R8
R9
R41
L66
C152
R42
C153
R190
R191
R45
R192
R46
R193
R47
R194
C158
C159
R195
R49
R196
R197
R198
R199
C352
C353
C160
R50
R51
C162
R52
C163
R53
C357
R54
C358
R55R56
R59
R60
R61
C366
R62
R64
C177
C178
C179
R88
CN1
R91
R92R93
R94
R95
R96
X3
R97
R98
R99
C10
C11
C13
C14
R200
C15
R201
C17C18
C19
IC12
1
43
6
1 6E
NC
AG
ND
EN
CB
VO
L INV
OL O
UT
GN
D
+ 1
2
3
4
IC8
3031
1120
90
91
6061
+
1 345
IC16
1
45
8
DSG
1
23
4
1
2 3
4
GSD
E
B
C
+
DSG
LV
B
J72-0883-09 (A/3)R169
46 47
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
PC BOARD TH-K2AT/K2E/K2ETTX-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
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
Ref. No. Address
IC4 10E
IC5 10K
IC8 7E
IC12 6B
IC16 8L
Q1 4P
Q2 3O
Q3 3P
Ref. No. Address
Q5 3N
Q9 4N
Q10 5N
Q11 6M
Q16 4L
Q17 3J
Q29 10J
Q30 8J
Ref. No. Address
Q33 9N
Q52 7G
Q58 6L
D1 3R
D2 3R
D5 2Q
D6 3Q
D8 4M
Ref. No. Address
D9 3M
D10 3G
D12 3G
D13 3G
D17 3F
D18 2L
D19 2K
D20 3I
Ref. No. Address
D21 3H
D22 10J
D24 8I
D27 9J
D30 8N
D32 8M
D33 8N
D35 7N
Ref. No. Address
D36 9D
D73 7N
D74 11I
D79 11I
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
*
MIC1
+ –
D42
D43
D44
D46
D47
S7PTT
MENU
1/F 2/VFO 3/MR F/CALL
VFO654
7 8 9 MR
CALL#0
LAMPMONI
J72-0883-09 (B/3)
J72-0883-09 (C/3)
48
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
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
Ref. No. Address
D42 4D
D43 5D
D44 8D
D46 5G
D47 8G
A B C D E F G H I J
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J72-0883-09 (B/3)
J72-0883-09 (C/3)
R230
C243
+–
Q50
DG
12
14 13
S
D48
D49
R336
R337
CN7
1P
TT
KY
O2
BL
5
2K
IN4
KY
O1
GN
D6
CN8
KIN3KIN0KIN2GNDMIG8MIM
KYO2KYO1KYO0LAMPKIN4
KYO3KIN1
49
PC BOARD TH-K2AT/K2E/K2ET
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
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
Ref. No. Address
Q50 3I
D48 11C
D49 11B
50
TH-K2AT/K2E/K2ET SCHEMATIC DIAGRAM
A B C D E
1
2
3
4
5
6
7
X57-674 1/5
-t
5MS
5R
F1
2.5A
J2 L50D32
RB051L-40
R210 12
D31DA221
R22
6
220
D40
B30
-215
6-05
D41
B30
-215
7-05
R22
7
100
R190
47k
C236
0.01u
C235
0.01u
R191
47k
2SB1184(Q,R)Q37
D34
MA
ZS
0270
H
C246
100u10
R21
7
820
R167
180k
C212
0.012u
R165
820k
C21
1
2200
pR144
0
C228
0.1u
C20
7
0.01
u
C220
4700p
C221
0.01u
R192
470
2SC4617(R)Q30
R156
100k
C201
1200p
D24
MA742
C219
0.047u
2SK1830Q27
2SC4919Q29
C23
01u
R18
527
0kR
181
470
R147
470
R13
7
4.7k
R18
0
39k
R17
9
220k
R14
8
150k
C209 1000p
R15
1
680
R197
100
R15
215
0kR
173
15k
R182
1k
C22
60.
1u
R161
1k
C206
0.015u
R195
100
C229
0.1u
R17
4
560k
R14
0
180k
C195
10u10
R141
18kC
196
6800
p
C19
7
6800
p
R146
18k
R207
1k
R145
4.7k
CN21
2
IC6 TA7368F
1
2
3
4
56NF
7PHASE
8PRE-GND
9PW-GND
10POUT
C25
5
10u1
0R206
15
C253
10u10
C252
100p
L49
R20
5
100
C24
9
1000
p
D26
1SS
388
C24
8
0.1u
2SK1830Q31
C24
7
0.1u
R203
470k
D25
MA2S111
R20
4
180kR20
2
47k
R199
1k
R16
0
4.7k
C205
0.047u
R178
0
C225
1u
IC5NJM2107F
1
2
3 4
5V+
C202
270p
R155
100k
R153
1k
R168
180k
C20
3
120p
R157
330k
R158
330k
C20
4
0.03
3u
R15
9
120k
CN1
1
2
3
4
5
6
C210 0.01u
R16
6
820k
C21
3
4.7u
6.3
C25
6
1000
p
C25
7
1000
p
C258
0.1u
R209
100k
R20
810
F3
0.5A
C198
1u
C25
0
1u
C24
0
1000
p
C2701000p
C27
1
1000
p
C27
9
1000
p
C28
0
1000
p
R257*
R25
8*
R25
9*
R26
0
47k
R26
1*
C23
8
1000
p
C24
1
1000
p
R201
4.7k
C24
2
0.01
u
C23
7
10u1
0
R19
3
1.8k
R224
18k
R223
220k
C23
9
1000
p
2SB1184(Q,R)Q33
2SK1830Q34
R211
470k
D33
RB051L-40
C27
6
1000
p
2SJ347Q36
R27
24.
7k
C27
2
470p
C290
1000p
C291
1000p
C320*
C321*
R17
7
10k
R21
210
k
R21
4
10k
R16
2
180k
R163
560k
R196
10k
R21
6
10k
R200
10k
R194
10k
R21
3
22k
IC17NJM2902V
1
2
3
4V+
5
6
7 8
9
10
11GND
12
13
14
CPH3417Q56
C331
1000p
R21
5
470k
R27
3
1k
2SC4617(R)Q38
Q47
RN
1701
C208
82p
IC16NJM2904V
1
2
3
4GND
5
6
7
8V+
C338
1u
J3
MIC
J4
SP
R324
47k
C33
9
0.04
7u
R330
470
C193
4.7u6.3
R332 15
C349
0.1u
C350*
C35
1
0.01
u
C352
1000p
C353 1000p
R33
5
1k
D27
RB706F-40
TH
3
100k
D30RB521S-30
2SK1830Q35
R17
1
56k
(D) R170
47k(D)
D221SS361
C358
0.047u
VR550k
VR6
100k
R14
2
4.7k
R14
9
47k
R143
470
C23
1
1000
p
C22
3
1000
pC
224
0.1u
R17
6
820k
R175
2.2k
C22
2
0.01
u
D36
RB521S-30
D35
RB521S-30
C28
61u
C28
310
00p
C282 1000p
C2851000p
C284
1000p
C281 1000p
IC4
XC
6202
PB
52F
R
124
GN
D
3
R264*
Q59*
R344*
C51
1* C
512
*
C51
7*
R34
90
D74DA221
D79DA221
C505
0.047u
R35
40
D80RB521S-30
C506
1000p
C23
2
1000
p
C21
8
1000
p
R21
8
0
R19
8
10k
R164
10k(D)
CHARGE SW
DC IN
TX LED BUSY LED
SP MUTE SW
DCS BAL
SPG
AFOSPKREM/TXD
IM
MAX DEV
DT
MF
/175
0
MICPTT
T0
SP
MO
D
VOLOUT
MICMUTESW
WX1050Hz
5MV5MV
VOXDETECTION AMP
DTMF/BEEP/1750/W-ALT
AF AMP/LAMP AVR
8V
5C/5R/5T AVR
5MS
RXD
RE
M
TXD
PTTE
BTEMPCHARGE
VO
LIN
8 OHM
SPG
SPK
BATTERYTERMINAL
5MS
11.5V AVR
RXDPTTE
IM
TXDSPM
MIG
EN
CA
EN
CB
5MS
IM
VO
LOU
T
MIG MICM
NA
R
W/N
TX-RX UNIT (X57-674X-XX)(A/3)
5C/5R/5T AVR
HPF
AF AMP
MIC AMP
CTCSS/DCS/WX FILTER
REM
DTMF/BEEP
WIDE/NARROWCHANGEOVER SW
Q56 OPERATION SWQ31
CONSTANT-CURRENTCIRCUIT
Q33 OPERATION SW
NI-MHTEMPERATUREDETECTION
DC INDETECTION
REVERSECURRENTPREVENTION
D33,35,36
Q36
AVRCONSTANT-VOLTAGE
Q37 OPERATION SWQ38
Q37
TX/BUSYLED SW
WX DETECTION AMP
MIC MUTECONTROL
MIC ALCRECTIFICATION
D27
D24
VOX DETECTIONRECTIFICATION
SP MUTESPEED UP
C246 DISCHARGE
D26
REVERSE CURRENTPREVENTION
REVERSE CURRENTPREVENTION
LIMITER
D74,79
REVERSE CURRENTPREVENTION
D80
5T
VO
UT
VS
S
VIN
1
VCC
VIN
RIPPLE
VOLIN
ENCA
NAR
ENCB
MOD
TO
5MS
QT/DQT
ENCBENCA
QT/DQT5R
5T5MS
5C
MOD
TONAR
VOLIN
VOXIN
SIGIN
TONEREM
5MV
RXLED
NOAA
MICM
+B
5MAFAMP
CHARGEBTEMP
BTDETDCDET
+B
RXD
SPMTXD
IMPTTE
MIG
8V
ROTARYENCODER
&VOL KNOB
VOLOUT
VOLIN
ENCB
GND
ENCA
GND
R16
9
100k
(D)
R18
6
68k
-t
C22
7
2.2u
4
R183
33k
TH
4
100k
R35
3
33k
R17
2
10k
13.43V
13.8V
T:0VR:4.89V
11.45V
7.07V13.58V
4.80V
7.07V
3.23V
T:4.92VR:0V
2.08V
T:73mVR:3.39V
T:3.29VR:110mV
T:4.96VR:0V
4.31V
TH-K2AT/K2E/K2ETSCHEMATIC DIAGRAM
F G H I J
X57-674 2/5
C29
5
5p
C29
4
5p
C293
47p
R25
41k
R25
61k
R25
31k
CP313.9k
Q52RN1107
IC8
90522BPFFG139
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
313233343536373839404142434445464748495051525354555657585960
61COM2
62COM3
63VSS
64SEG16
65SEG17
66SEG18
67SEG19
68SEG20
69SEG21
70SEG22
71SEG23
72SEG24
73NC
74NC
75SEG25
76SEG26
77SEG27
78SEG28
79SEG29
80SEG30
81SEG31
82V0
83V1
84V2
85V3
86HST(VCC)
87MD2
88MD1
89MD0
90RESET
91V
SS
92X
0
93X
1
94V
CC
95P
WR
SW
96IN
TU
P
97IN
TD
W
98D
CD
ET
99R
XLE
D
100
BS
FT
101
PLL
EN
102
PLL
LD
103
KIN
0
104
KIN
1
105
KIN
2
106
KIN
3
107
KIN
4
108
TY
PE
109
VU
KE
Y
110
MIC
M
111
NO
AA
112
5R
113
SH
IFT
114
5T
115
KO
UT
0
116
KO
UT
1
117
KO
UT
2
118
KO
UT
3
119
VS
S
120
BT
DE
T
X3
7.98
2MH
z
R27
7
47k
C3320.1u
C3350.1u
C336
0.1u
R282
0
R283
0
R285
0
R28
6
0
CP
321k
CP
331k
CP
341k
CP
351k
R310
3.9k
R313
3.3k
R318
1k
R32
547
k
R32
6
0
R342 0
R343 0
R235
1k
C359
0.1u C3600.1u
R31
2
4.7k
R27
6
47k
R27
5
47k
R32
3
4.7k
LCD (B38-0881-05)
1C
OM
0
2C
OM
1
3C
OM
2
4C
OM
3
5S
EG
0
6S
EG
1
7S
EG
2
8S
EG
3
9S
EG
4
10S
EG
5
11S
EG
6
12S
EG
7
13S
EG
8
14S
EG
9
15S
EG
10
16S
EG
11
17S
EG
12
18S
EG
13
19S
EG
14
20S
EG
15
21S
EG
16
22S
EG
17
23S
EG
18
24S
EG
19
25S
EG
20
26S
EG
21
27S
EG
22
28S
EG
23
29S
EG
24
30S
EG
25
31S
EG
26
32S
EG
27
33S
EG
28
34S
EG
29
35S
EG
30
36S
EG
31
SEG30
SEG31
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
COM3
COM2
COM1
COM0
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
SEG14
SEG15
SE
G26
SE
G25
SE
G28
SE
G30
SE
G27
SE
G31
SE
G29
SE
G24
SE
G19
SE
G16
SE
G18
SE
G22
SE
G23
SE
G17
SE
G21
SE
G20
CO
M1
CO
M2
CO
M0
CO
M3
SE
G4
SE
G2
SE
G1
SE
G6
SE
G3
SE
G5
SE
G7
SE
G10
SE
G8
SE
G11
SE
G0
SE
G9
SE
G13
SE
G12
SE
G14
SE
G15
ENCAENCB
5C/5R/5T AVR 5C/5R/5T AVR
MPU
DTMF/BEEP
BEAT SHIFT SW
SQVSMV
5MV
+B
TEMP
5T
VOLIN
ENCA
NAR
ENCB
MOD
TO
5C5R
5MS
QT/DQT
VOXIN
5MV
TONE
SIGIN
REM
RXLED
NOAA
MICM
+B
AFAMP
BTEMP
TXDMIG
+B
CHARGE
5M
DCDET
PTTE
SPM
IM
RXD
BTDET
8V
SE
G14
SE
G15
VS
S
C0R
1
EN
CA
EN
CB
5MS
DV
CC
DV
SS
DT
MF
/BE
EP
TON
E
AV
CC
AV
RH
AV
RL
AV
SS
RE
M
SIG
INSQ
SM
VO
XIN
TH
ER
M
BAT
T
BT
EM
P
VC
C
CH
AR
GE
LAM
P
AFA
MP
NA
R
CO
M0
CO
M1
CLOCK
DATA
EEPDI
EEPCS
VOX
BPF/APC
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
FINAL
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
AFMKAPC
PLLLD
SMVSQV
CLOCK
5MV
DATA
5T
VOLIN
NAR
MOD
TO
5C5R
5MS
QT/DQT
SHIFT
PLLEN
+B
TEMPFINAL
5M
BATT
5MS SWLAMP
5C SWVOX
5R SW5T SW
PTTI
5M
EEPDI
EEPCS
BPF/APC
MIGIM
+B
5M
8V
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1KIN0
KIN4
KOUT2
RESETPWR SW
INT0
ON:4.76V
4.83V
TX-RX UNIT (X57-674X-XX)(A/3)
TH-K2AT/K2E/K2ET SCHEMATIC DIAGRAM
R237 100k
D49
B30-2237-05
R23
1
150
R238 1k
D48
B30-2237-05
R236 1k
D60
R25
2
100k
D62
D63
D65D64
C31
3
0.03
9u
C30
410
00p
R239
1k
R241
330k
C30
7
0.1u
R242
330k
C29
91u
R243
330k
R24
010
0k
C31
8
1000
p
C31
7
1000
p
R25
5
0
C29
810
00p
C30
010
00p
C30
2
1000
p
C30
510
00p
C30
610
00p
C30
8
1000
p
CPH3317Q55
D69
MA
2S11
1
D70
MA
2S11
1
D71
MA
2S11
1
D72
MA
2S11
1
IC15AT25160N10SI27
1CS
2SO
3WP
4GND
5
6
7
8
R26
3
10k
C30
3
150u
6.3
IC11S-80930CNNBG80
1VSS
2VDD
4OUT
3CD
IC10S-80844CNNBB85
12
4V
SS
3N
C
CN61
2
3
4
5
6
CN71
2
3
4
5
6
CN91234567891011121314
R32
8
470k
C34
410
00p
C34
5
1000
pC34
6
1000
p
C347
1000pC348
1000p
C35
4
1000
p
C35
5
0.01
u
S7S70-0485-05
Q51RN4902
Q41RN2105
Q57RN2105
IC12
TK
1125
0CU
CB
1N
P
2G
ND
3C
ON
T4
VIN
6V
OU
T
IC9
TK
1125
0CM
1 2 34
VO
UT
5G
ND
2
6V
IN
C30
91u
C311
0.1u
C31
4
1000
p
C33
0
1000
p
C316
0.1u
C31
9
10u1
0
Q53
RN
2701
C51
5*
C51
6*C
514
*
C24
3
1000
pD
46
B30
-220
5-05
D44
*
CN81234567891011121314
MIC1
D47
*R
230
*
2SK1830Q50
R33
7
470
R33
6
220
D42
B30
-220
5-05
D43
B30
-220
5-05
R248
3.9k
C31
2
0.03
9u
R246
3.9k
C31
0
1u
L63
R244
0
C29
70.
1u
EEPROM
SET
INT0 RESET
BIT
3
MONI
JUM
PE
R
PTT
LAMP
KE
Y
TYPE
BIT
2
BIT
1
BIT
0
PTT BOARD
5.0V AVR
PTT
KIN4
KYO2
KYO1
BL
GND
KIN
3
KY
O2
KIN
0
KY
O1
KIN
2
KY
O0
GN
D
LAM
P
MIG
KIN
4
8M KY
O3
IM KIN
1
5C/5R/5T AVR
5.0V AVR
4.4V VOLTAGE DETECTION 3.3V VOLTAGE DETECTION
5R/5MVSW
10KEY BOARD
TX-RX UNIT(X57-674X-XX)(B/3)
MENU
TX-RX UNIT(X57-674X-XX)(C/3)
5MS SW5C SW
5T SW
LCD LED SW
KEY LED SW
KEYILLUMINATIONLED
D42-44,46,47
D48,49
LCDILLUMINATIONLED
KEY TYPEDETECTION
D60 D62-65
MARKET CODEDETECTION
REVERSECURRENTPREVENTION
D69-72
PO
WE
R S
W
BPF/APC
+B
5MS
AFM
PLLLD
KAPCDATA
SMVSQV5MV
CLOCK
QT/DQT
VOLIN
5C5R
MOD
TO
5MS5T
NAR
SHIFT
PLLEN
+B
TEMPFINAL
5M
SI
SCK
HOLD
VCC
BATT
5MS SWLAMP
5C SWVOX
5R SW5T SW
PTTI
5M
EEPDI
EEPCS
BPF/APC
MIGIM
+B
5M
8V
KIN3
KIN0
KIN2KIN1
KIN4TYPE
KOUT3KOUT2KOUT1KOUT0VUKEY
INT0PWR SWRESET
*
7
1/F
4
2/VFO
5
8
0
6
9
#
3/MR
MR
F/CALL
VFO
CALL
* * *
CO
NT
GN
D1
NP
OU
T
VD
D
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SQVSMV
CLOCKDATAKAPCAFM
PLLENPLLLDSHIFT
+B
5C
FINALTEMP
MA
2S11
1
MA
2S11
1
ON:6.90V
4.83V 4.66V
4.92V
4.68V 4.69V
T:4.95VR:0V
T:4.95VR:0V
5.01V
T:0VR:4.90V
ON:4.78V
K L M N O
X57-674 3/5
TX-RX UNIT (X57-674X-XX)(A/3)
TH-K2AT/K2E/K2ETSCHEMATIC DIAGRAM
5C
D16
MA2S111
C41
4.7u
6.3
R36 10
R35 120k
C40 0.1u
R30
1.2k
R31
2.2k
C33
0.22
u35
C35
0.1u
35
KTC4082Q23
R132
2.2k
R131 330k
R13
010
0
IC3TA31136FN
123456789 10 11 12 13 14 15 16
C174
180p
R13
5
470k
C17
6
0.1u
C180
120p C191
0.01u2SC5488
Q24
R134390k
R13
3
1k
R1243.3k
C17
2
1800
p
C18
2
0.1u
C13
0.5p(B)
C20
8p
C22
18p
R19 120k
2SC4617(R)Q4
R21
4.7k
D7
MA
2S11
1
C27
10u1
0
R12
5
560
C45
100p
C46
100p
C44
100p
C52
10p
R38
56k
R20 1k
C34
4.7u
6.3
R24
470
C167
0.1u
R11
827
k
2SC4617(R)Q21
C16
8
0.1u
2SK1830Q20
C169
0.068u
C170
0.068u
R116
120k
R12
6
27k
R123
1.8k
C17
1
1000
p
C18
6
24p
C187
2p C18
824
pC
189
1000
p
C19
2
0.01
u
C18
3
0.1u
R128
3.3k
R122
2.7k
R119
1.8k
C50 22p
C51
22p
2SK1830Q3
R6
1k
C54
1000
p
C55
0.01
u
C38
0.01uC
43
0.01
u
R5
100k
C14
1000
p
C15
12p
C17
8
0.01
u
C17
7
22u6
.3
R12
7
47
C11
1000
p
C26
1000
p
C25
1000
p
C30
1000
p
C21
1000
p
C371000p
C42
1000
p
C190
0.01u
CP23.9k
2SC5488Q6
C17
9
0.1u
L812
0n
R12
47
C17
5
22p
C173
180p
L46
560n
CD1450kHz
2SC5488Q5
R18 10
C19
15p
R15
5.6k
C17
C18
R14
R17
3.3k
R16
CF1L72-0968-05
L58
820n
L64
4.7u
C57
10p
R18
847
R8
100k
R18
9
0
C56
1000
p
VR1
500k
C1
0.01
u
C4
1000p
D5
HSC277
C5
0.1u
C6
1000
p
R4
1k
R11 150k
C10
0.01
u
2SC5488Q2
R10 47
L982
n
IC1
LMX
2316
TM
X
123456789
GN
D3
10C
E11
CLK
12D
ATA
13LE
14F
O/L
D15
VC
C2
16V
P
CP
12.
7k
C24
1000p
R117
2.7k (D)
L53 15n
R32
1k
C19
4
0.1u
R120
2.7k
C166
0.01u
L45
560n
L1
10u
D1
1SV325
D2
1SV
325
L2 47n
L610
u
C2
1000p
L3 82n2SC5066(O)
Q1
C8
27p
(G)
C9
27p
(G) R9
270
L5 10u
R13 6.8k
R22
8.2k
C3
3p(B
)
C7
0.5p (B
)D
6
1SV
305
R7
47k
C12
4
0.1u
R11
55.
6k
R37 56k
Q22RN2105
L68
X1
12.8MHz
L77-1931-05
VC
GND
R348
220
C16
1
1000
p
CN15 CN17*
LV
PLL IC
FM IC
450kHz
PLLLDCLOCKDATAPLLEN
2nd L.O.
SHIFT
WIDE/NARROWCHANGEOVER SW
AF MUTE SW SQ
V
SM
V
5R
SQ FILTER
IF AMP
FREQ
VCO
RF AMPRF AMP
VCO SHIFT CONTROL SW
RIPPLE FILTER
RF AMP
SPEED UP
TRIPLER
AF FILTER
5T+B
AF
MV
OLI
N
5R 5R
5R
KAPC
FINAL
TEMP
BPF/APC
BPF/APC
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SMVSQV
DATACLOCK
AFMKAPC
SHIFT
PLLENPLLLD
+B
5C
FINALTEMP
MO
D
SQ
VS
MV
QT
/DQ
T
NA
R
PLL
EN
5MS
AF
M
SH
IFT
5CP
LLLD
TO
CLO
CK
5R DAT
A
VO
LIN
DAT
A
5R
CLO
CK
PLL
LD5CAF
M
PLL
EN
NA
R
QT
/DQ
T
SM
VS
QV
VO
LIN
BP
F/A
PC
5RNA
RS
MV
SQ
VB
PF
/AP
C
VCO FREQUENCY CONTROL
D1,2
VCO MODULATION
D6
D5
FREQUENCY SHIFT
FLO
CP
O
GN
D1
GN
D2
FIN
FIN
VC
C1
OS
CI
PLL LOCK DETECTION
D16
OUTPUT
VCC
FINAL
KAPC
TEMP
1000
p
1000
p
3.3k
470
OS
CIN
OS
CO
UT
MIX
OU
T
VC
C
IFIN
DE
C
FIL
OU
T
FIL
INA
FO
UT
QU
AD
IFO
UT
RS
SI
N-D
ET
N-R
EC
GN
D
MIX
IN
4.45V
4.63V1.58V
3.63V
4.45V
T:0VR:4.63V
W:111mVN:4.79V
4.76V
0.53V
4.82V
0.72V
TX-RX UNIT (X57-674X-XX)(A/3)
X57-674 4/5
P Q R S T
TH-K2AT/K2E/K2ET SCHEMATIC DIAGRAM
YXWVU
1
2
3
4
5
6
7
-t
C83
0.01
u
C84
0.1u
L13
R53
100
R47
5.6k
D8
HSC277
D9
HSC277
IC2 NJM2904V
1AOUT
A-IN
A+IN4
GND5
8
2 7
3 6
C10
9
1000
p
C11
1
1000
p
R77
150k
(D)
R76 150k (D)
R74100k
(D)
R75
100k(D)
R78
150k
(D)
R79
150k (D)
R80
10k
R81 390k
R82 27
k
R83 56kC110 1000p
R70
0.39 R71
0.39 R72
0.39
R86
5.6k
C136
10p
R91
1k
R46
10k
C128
0.01u
C12
5
1.5p
C12
6
10p
R90330
R45
3.3k
C13
512
p
D15
MA
8039
C11
7
1000
p
C11
3
1000
p
2SK2596Q11
C13
3
0.01
u
R102
0
R55
470
C97
12p
(G)
C99
13p
(G)
C10
124
p
(G)
C96 12p
(G)
R93
47
R94
330
C1592p
(B)
C98 8p
(B)
C88
56p
R85 560
R84
100k
C108
100p
D14
MA
2S11
1
D10
XB15A709
C11
4
1000
p
L19
9T
L16
R97
82k
C69
4p
R56
1k
R58 10
R60
56k C95
12p
(G)
C11
6
10u4
C11
5
1000
p
2SK3476Q12
R51
470
C12
9
11p
C65 18p
C11
8
1000
p
C76
39p
C89
1000p
C93
8p
C100 7p
(B)
R92
3.3k
R54
100
R59
12k
C13
2
0.01
u
Q14RN4902
D12
HV
C13
1
D13
HV
C13
1
3SK318Q16
D18
1SV
305
D19
1SV
305
D20
1SV
305
D21
1SV
305
R50
33
R49
330
C10
7
1000
p
2SK1830Q13
C61
1000
p C64
1000
p
C67
1000
p
C71
1000
p
C75
1000p
C74
33p
C78
1000
p C82
1000
p
C941000p
C162
47p(G)
C16
3
1000
p
C15
3
1000
p
C14
7
1000
p
C13
4
1000
p
C13
0
1000
p
C13
10.
01u
2SC5488Q9
C91
1000
p
R61 220
R62 220
C90
1000
p
R98
82k
R96
82k
R95
100k
C14
1
1000
pL17
18.5n L20
7T
L21
9T
L10
82n
L11
82n
L54
56n
2SK1830Q58
C32
310
00p
C32
5
1000
p
R41
270
R39
270
R271
12
C326
1000p
C32
7
0.1u
C32
8
1u
C329
56p
XF1L71-0619-05
L41
18n
L40
68n
L38
82n
L35
82n
L32
82n
C14
8
22p
(G)
C15
8
22p
(G)
C14
5
22p
(G)
C16
0
27p
(G)
C50
42p
(B)
L66
120n
R10
3
2.7k
R10
147
R10
4
56
2SK1215(E)Q17
L12
10n
L15
6.8n
L55
10n
L56
22n
R64 0
C32
4
1000
p
C10
6
1000
p
C10
5
1000
p
C15
2
1000
p
C5023p
(B)
C5011.5p
(B)
C5001.5p
(B)
R290
0
R88
330
C356 0.01u
C35
71u
L18
220n
TH
1
10k
L14
47n
L27680n
C85
56p
C36
610
0p
C50
310
0p
C73
1000
p
C137
5p
C13
8
1000
p
L29 22nL28
27n
D73
MA
2S11
1
R52
1k
R11
11.
0M
R10
0
1.0M
R99
1.0M
R11
01.
0M
C68
18p
L23
9T
L22
9T
2SC4926YDQ10
R42
100
2SC4617(R)Q15
R33 22
R34
3.3k
C66 1u
R341
0
C142
1000p
C112 1000p
C72
0.1u
C70 1u
C92
1000
p D17
HSM88AS
C51
0*
R345
0
R34
668
R347
100
R35
1
220 L2
6
470n
R291
0
CN10
VDD
APC DIFFERENTIALAMP
DC SWTEMPCOMPENSATION
TX PATH
1st MIXER
1st IF
38.85MHz
VGG
APC
ANT
KAPC
5T
RF AMP
DRIVEAMP DRIVE
AMP
POWERAMP
APC CIRCUITOPERATION SW
APC OUTPUT SW
APC OUTPUTVOLTAGE LIMITTER
Q12 GATEVOLTAGE SW
OVER INPUTPROTECTION
ANTENNA SW
D12,13ANTENNA SW
RX 1st AMP
Q10 OPERATION SW
VOLTAGEDROP
RF SW
RF SW
RX BPF TUNING
D18,19
D20,21
RX BPF TUNING
5T
5T
5T
+B
+B
5R
5R
5R
5T
KAPC
VGG
FINAL
TEMP
BPF/APC
REVERSE CURRENT PREVENTIOND14
B+IN
B-IN
BOUT
V+
TH-K2E
TH-K2AT
TH-K2ET
NO
R230
220
220
R257
56k
NO
NO
0
0
R258
680
R259
0
0
680k
R261
47k
NO
NO
NO
R264
0
0
R344
100k
NO
NO
E23-1081-05
NO
E23-1081-05
CN17
TH-K2AT 220 NO 0 0 NO 0 NO NO
TH-K2AT
TH-K2E
TH-K2ET
TH-K2AT
D44
B30-2205-05
B30-2205-05
NO
B30-2205-05
2-72
0-11
2-71
0-21
2-72
0-11
0-21
2-71
X57-674X-XX
X57-674X-XX
E
K,K2
E3
M,M2
E
M,M2
K,K2
E3
NO
B30-2205-05
B30-2205-05
B30-2205-05
D47 D60
NO
NO
NO
MA2S111
D62
MA2S111
MA2S111
MA2S111
NO
MA2S111
NO
NO
MA2S111
D63
NO
Q59
NO
2SK1830
NO
NO
NO
NO
C321
8200p
NO
C320
NO
NO
8200p
NO
0.1u
NO
C350
NO
NO
C510
100p
100p
NO
NO
NO
C511
470p
470p
C512
470p
470p
NO
NO
NO
NO
C514
470p
470p
NO
NO
470p
C515
470p
470p
470p
C516
NO
NO
470p
NO
470p
C517
NO
T:4.23VR:0V
T:4.85VR:0V
1.30V
12.46V
12.29V
2.00V
1.40V
4.90V
2.29V(HIGH POWER)
4.71V
2.68V
2.42V 4.66V
0.27V
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
T:0VR:0V
X57-674 5/5
TX-RX UNIT (X57-674X-XX)(A/3)
Note : The components marked with adot ( ) are parts of layer1.
-t
-t
5C
5MS
5R
D16
MA2S111
C41
4.7u
6.3
R36 10
R35 120k
C40 0.1u
R30
1.2k
R31
2.2k
C33
0.22
u35
C35
0.1u
35
KTC4082Q23
R132
2.2k
R131 330k
R13
010
0
C83
0.01
u
C84
0.1u
L13
R53
100
R47
5.6k
D8
HSC277
D9
HSC277
IC2 NJM2904V
1AOUT
A-IN
A+IN4
GND5
8
2 7
3 6
C10
9
1000
p
C11
1
1000
p
R77
150k
(D)
R76 150k (D)
R74100k
(D)
R75
100k(D)
R78
150k
(D)
R79
150k (D)
R80
10k
R81 390k
R82 27
k
R83 56kC110 1000p
R70
0.39 R71
0.39 R72
0.39
R86
5.6k
C136
10p
R91
1k
R46
10k
IC3TA31136FN
123456789 10 11 12 13 14 15 16
C174
180p
R13
5
470k
C17
6
0.1u
C180
120p
C128
0.01u
C191
0.01u
C12
5
1.5p
C12
6
10p
2SC5488Q24
R90330
R134390k
R13
3
1k
R1243.3k
C17
2
1800
p
C18
2
0.1u
C13
0.5p(B)
C20
8p
C22
18p
R19 120k
2SC4617(R)Q4
R21
4.7k
D7
MA
2S11
1
C27
10u1
0
R45
3.3k
C13
512
p
F1
2.5A
D15
MA
8039
C11
7
1000
p
C11
3
1000
p
R12
5
560
2SK2596Q11
C45
100p
C46
100p
C44
100p
C52
10p
R38
56k
R20 1k
C13
3
0.01
u
R102
0
R55
470
C97
12p
(G)
C99
13p
(G)
C10
124
p
(G)
C96 12p
(G)
R93
47
R94
330
C1592p
(B)
C98 8p
(B)
C88
56p
R85 560
R84
100k
C108
100p
D14
MA
2S11
1
D10
XB15A709
C11
4
1000
p
L19
9T
L16
R97
82k
C69
4p
R56
1k
R58 10
R60
56k C95
12p
(G)
C11
6
10u4
C11
5
1000
p
C34
4.7u
6.3
R24
470
2SK3476Q12
J2 L50D32
RB051L-40
R210 12
D31DA221
C29
5
5p
C29
4
5p
C293
47p
R237 100k
D49
B30-2237-05
R23
1
150
R238 1k
R22
6
220
D40
B30
-215
6-05
D41
B30
-215
7-05
D48
B30-2237-05
R22
7
100
R236 1k
R190
47k
C236
0.01u
C235
0.01u
R191
47k
2SB1184(Q,R)Q37
D34
MA
ZS
0270
H
C246
100u10
R21
7
820
C167
0.1u
R11
827
k
2SC4617(R)Q21
R167
180k
C212
0.012u
C16
8
0.1u
R165
820k
2SK1830Q20
C169
0.068u
C170
0.068u
R116
120k
C21
1
2200
p
R144
0
C228
0.1u
C20
7
0.01
u
C220
4700p
C221
0.01u
R192
470
2SC4617(R)Q30
R156
100k
C201
1200p
D24
MA742
C219
0.047u
2SK1830Q27
2SC4919Q29
C23
01u
R18
527
0kR
181
470
R147
470
R13
7
4.7k
R18
0
39k
R17
9
220k
R14
8
150k
C209 1000p
R15
1
680
R197
100
R15
215
0kR
173
15k
R182
1k
C22
60.
1uR161
1k
C206
0.015u
R195
100
C229
0.1u
R17
4
560k
R14
0
180k
C195
10u10
R141
18k
C19
6
6800
p
C19
7
6800
pR146
18k
R207
1k
R145
4.7k
CN21
2
IC6 TA7368F
1
2
3
4
56NF
7PHASE
8PRE-GND
9PW-GND
10POUT
C25
5
10u1
0R206
15
C253
10u10
C252
100p
L49
R20
5
100
C24
9
1000
p
D26
1SS
388
C24
8
0.1u
2SK1830Q31
C24
7
0.1u
R203
470k
D25
MA2S111
R20
4
180kR20
2
47k
R12
6
27k
R123
1.8k
C17
1
1000
p
C18
6
24p
C187
2p C18
824
pC
189
1000
p
C19
2
0.01
u
C18
3
0.1u
R128
3.3k
R199
1k
R16
0
4.7k
C205
0.047u
R178
0
C225
1u
IC5NJM2107F
1
2
3 4
5V+
C202
270p
R155
100k
R153
1k
R168
180k
C20
3
120p
R157
330k
R158
330k
C20
4
0.03
3u
R15
9
120k
CN1
1
2
3
4
5
6
C210 0.01u
R16
6
820k
C21
3
4.7u
6.3
C25
6
1000
p
C25
7
1000
p
C258
0.1u
R209
100k
R20
810
D60
R122
2.7k
R119
1.8k
F3
0.5A
R51
470
C12
9
11p
C198
1u
C25
0
1u
C65 18p
C11
8
1000
p
C76
39p
C89
1000p
C93
8p
C100 7p
(B)
R92
3.3k
R54
100
R59
12k
C50 22p
C51
22p
2SK1830Q3
R6
1k
C13
2
0.01
u
C54
1000
p
C55
0.01
u
C38
0.01u
C43
0.01
u
Q14RN4902
R25
41k
R25
61k
R25
2
100k
D62
D63
D65
R25
31k
D64
D12
HV
C13
1
D13
HV
C13
1
3SK318Q16
D18
1SV
305
D19
1SV
305
D20
1SV
305
D21
1SV
305
C31
3
0.03
9u
R50
33
R49
330
C30
410
00p
R239
1k
R241
330k
C30
7
0.1u
R242
330k
C29
91u
R243
330k
R24
010
0k
C10
7
1000
p
2SK1830Q13
R5
100k
CP313.9k
C14
1000
p
C15
12p
C17
8
0.01
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C17
7
22u6
.3
R12
7
47
C11
1000
p
C26
1000
p
C25
1000
p
C30
1000
p
C21
1000
p
C371000p
C42
1000
p
C190
0.01u
C61
1000
p C64
1000
p
C67
1000
p
C71
1000
p
C75
1000p
C74
33p
C78
1000
p C82
1000
p
C941000p
C162
47p(G)
C16
3
1000
p
C15
3
1000
p
C14
7
1000
p
C13
4
1000
p
C13
0
1000
p
C13
10.
01u
C24
0
1000
p
C2701000p
C27
1
1000
p
C27
9
1000
p
C28
0
1000
p
C31
8
1000
p
C31
7
1000
p
R257*
R25
8*
R25
9*
R26
0
47k
R26
1*
C23
8
1000
p
C24
1
1000
p
R201
4.7k
C24
2
0.01
u
C23
7
10u1
0
R19
3
1.8k
R224
18k
R223
220k
Q52RN1107
C23
9
1000
p
CP23.9k
R25
5
0
2SC5488Q9
2SC5488Q6
C91
1000
p
R61 220
R62 220
C90
1000
p
R98
82k
R96
82k
R95
100k
C14
1
1000
p
2SB1184(Q,R)Q33
2SK1830Q34
R211
470k
D33
RB051L-40
C27
6
1000
p
2SJ347Q36
R27
24.
7k
C27
2
470p
C290
1000p
C291
1000p
C29
810
00p
C30
010
00p
C30
2
1000
p
C30
510
00p
C30
610
00p
C30
8
1000
p
C320*
C321*
L17
18.5n L20
7T
L21
9T
C17
9
0.1u
L812
0n
R12
47
CPH3317Q55
C17
5
22p
C173
180p
R17
7
10k
R21
210
k
R21
4
10k
R16
2
180k
R163
560k
R196
10k
R21
6
10k
R200
10k
R194
10k
R21
3
22k
D69
MA
2S11
1
D70
MA
2S11
1
D71
MA
2S11
1
D72
MA
2S11
1
IC8
90522BPFFG139
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
313233343536373839404142434445464748495051525354555657585960
61COM2
62COM3
63VSS
64SEG16
65SEG17
66SEG18
67SEG19
68SEG20
69SEG21
70SEG22
71SEG23
72SEG24
73NC
74NC
75SEG25
76SEG26
77SEG27
78SEG28
79SEG29
80SEG30
81SEG31
82V0
83V1
84V2
85V3
86HST(VCC)
87MD2
88MD1
89MD0
90RESET
91V
SS
92X
0
93X
1
94V
CC
95P
WR
SW
96IN
TU
P
97IN
TD
W
98D
CD
ET
99R
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D
100
BS
FT
101
PLL
EN
102
PLL
LD
103
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1
105
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2
106
KIN
3
107
KIN
4
108
TY
PE
109
VU
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Y
110
MIC
M
111
NO
AA
112
5R
113
SH
IFT
114
5T
115
KO
UT
0
116
KO
UT
1
117
KO
UT
2
118
KO
UT
3
119
VS
S
120
BT
DE
T
X3
7.98
2MH
z
IC15AT25160N10SI27
1CS
2SO
3WP
4GND
5
6
7
8
L10
82n
L11
82n
L54
56n
2SK1830Q58
C32
310
00p
R26
3
10k
C32
5
1000
p
R41
270
R39
270
R271
12
C326
1000p
C32
7
0.1u
C32
8
1u
C329
56p
XF1L71-0619-05
L41
18n
L40
68n
L38
82n
L35
82n
L32
82n
C14
8
22p
(G)
C15
8
22p
(G)
C14
5
22p
(G)
C16
0
27p
(G)
C50
42p
(B)
L66
120n
R10
3
2.7k
R10
147
R10
4
56
IC17NJM2902V
1
2
3
4V+
5
6
7 8
9
10
11GND
12
13
14
CPH3417Q56
C331
1000p
L46
560n
R21
5
470k
R27
3
1k
2SC4617(R)Q38
Q47
RN
1701
C30
3
150u
6.3
IC11S-80930CNNBG80
1VSS
2VDD
4OUT
3CD
IC10S-80844CNNBB85
12
4V
SS
3N
C
2SK1215(E)Q17
L12
10n
L15
6.8n
L55
10n
L56
22n
C208
82p
R64 0
IC16NJM2904V
1
2
3
4GND
5
6
7
8V+
CD1450kHz
R27
7
47k
2SC5488Q5
R18 10
C19
15p
R15
5.6k
C17
C18
R14
R17
3.3k
R16
C32
4
1000
p
CN61
2
3
4
5
6
CN71
2
3
4
5
6
C3320.1u
C10
6
1000
p
C10
5
1000
p
CF1L72-0968-05
L58
820n
C15
2
1000
p
C3350.1u
C336
0.1u
R282
0
R283
0
R285
0
R28
6
0
L64
4.7u
C57
10p
R18
847
C338
1u
J3
MIC
J4
SP
C5023p
(B)
C5011.5p
(B)
C5001.5p
(B)
R290
0
CN91234567891011121314CP
321k
CP
331k
CP
341k
CP
351k
R310
3.9k
R313
3.3k
R318
1k
R8
100k
R18
9
0
R324
47k
C33
9
0.04
7u
R32
547
k
R32
6
0
R342 0
R343 0
R32
8
470k
R330
470
C193
4.7u6.3
C56
1000
p
R332 15
C34
410
00p
C34
5
1000
pC34
6
1000
p
C347
1000pC348
1000p
R88
330
C349
0.1u
C350*
C35
1
0.01
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C352
1000p
C353 1000p
R33
5
1k
C35
4
1000
p
C35
5
0.01
u
C356 0.01u
C35
71u
L18
220n
R235
1k
VR1
500k
D27
RB706F-40
C359
0.1u C3600.1u
C1
0.01
u
C4
1000p
D5
HSC277
C5
0.1u
C6
1000
p
R4
1k
R11 150k
C10
0.01
u
2SC5488Q2
R10 47
S7S70-0485-05
TH
3
100k
TH
1
10k
L982
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L14
47n
L27680n
C85
56p
C36
610
0p
C50
310
0p
C73
1000
p
C137
5p
C13
8
1000
p
L29 22nL28
27n
D73
MA
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X
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D3
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CLK
12D
ATA
13LE
14F
O/L
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VC
C2
16V
P
CP
12.
7k
C24
1000p
D30RB521S-30
2SK1830Q35
R52
1k
R11
11.
0M
R10
0
1.0M
R99
1.0M
R11
01.
0M
R117
2.7k (D)
R17
1
56k
(D) R170
47k(D)
L53 15n
C68
18p
D221SS361
L23
9T
L22
9T
R32
1kC358
0.047u
VR550k
VR6
100k
R14
2
4.7k
R14
9
47k
R143
470
Q51RN4902
C19
4
0.1u
R120
2.7k
C166
0.01u
L45
560n
2SC4926YDQ10
R42
100
2SC4617(R)Q15
R33 22
R34
3.3k
C66 1u
L1
10u
D1
1SV325
D2
1SV
325
L2 47n
L610
u
C2
1000p
L3 82n2SC5066(O)
Q1
C8
27p
(G)
C9
27p
(G) R9
270
L5 10u
R13 6.8k
R22
8.2k
C3
3p(B
)
C7
0.5p (B
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6
1SV
305
R7
47k
R341
0
C142
1000p
C112 1000p
C72
0.1u
C70 1u
C23
1
1000
p
C12
4
0.1u
C22
3
1000
pC
224
0.1u
R17
6
820k
R175
2.2k
C22
2
0.01
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R11
55.
6k
R37 56k
C92
1000
p D17
HSM88AS
R31
2
4.7k
Q41RN2105
Q57RN2105
IC12
TK
1125
0CU
CB
1N
P
2G
ND
3C
ON
T4
VIN
6V
OU
T
IC9
TK
1125
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1 2 34
VO
UT
5G
ND
2
6V
IN
C30
91u
C311
0.1u
C31
4
1000
p
C33
0
1000
p
C316
0.1u
C31
9
10u1
0
D36
RB521S-30
D35
RB521S-30
C28
61u
C28
310
00p
C282 1000p
C2851000p
C284
1000p
C281 1000p
R27
6
47k
R27
5
47k
Q53
RN
2701
IC4
XC
6202
PB
52F
R
124
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D
3
R264*
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6*
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512
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L68
R345
0
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12.8MHz
L77-1931-05
VC
GND
R34
668
R347
100
R348
220
R34
90
D74DA221
D79DA221
C505
0.047u
R35
1
220 L2
6
470n
R35
40
D80RB521S-30
C506
1000p
R32
3
4.7k
C23
2
1000
p
C21
8
1000
p
C16
1
1000
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R291
0
R21
8
0
CN10
C51
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0
2C
OM
1
3C
OM
2
4C
OM
3
5S
EG
0
6S
EG
1
7S
EG
2
8S
EG
3
9S
EG
4
10S
EG
5
11S
EG
6
12S
EG
7
13S
EG
8
14S
EG
9
15S
EG
10
16S
EG
11
17S
EG
12
18S
EG
13
19S
EG
14
20S
EG
15
21S
EG
16
22S
EG
17
23S
EG
18
24S
EG
19
25S
EG
20
26S
EG
21
27S
EG
22
28S
EG
23
29S
EG
24
30S
EG
25
31S
EG
26
32S
EG
27
33S
EG
28
34S
EG
29
35S
EG
30
36S
EG
31
R19
8
10k
SEG30
SEG31
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
COM3
COM2
COM1
COM0
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
SEG14
SEG15
SE
G26
SE
G25
SE
G28
SE
G30
SE
G27
SE
G31
SE
G29
SE
G24
SE
G19
SE
G16
SE
G18
SE
G22
SE
G23
SE
G17
SE
G21
SE
G20
CO
M1
CO
M2
CO
M0
CO
M3
SE
G4
SE
G2
SE
G1
SE
G6
SE
G3
SE
G5
SE
G7
SE
G10
SE
G8
SE
G11
SE
G0
SE
G9
SE
G13
SE
G12
SE
G14
SE
G15
LV
C24
3
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470
R33
6
220
D42
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5-05
D43
B30
-220
5-05
R248
3.9k
C31
2
0.03
9u
R246
3.9k
C31
0
1u
R164
10k(D)
L63
R244
0
C29
70.
1u
PLL IC
VDD
APC DIFFERENTIALAMP
DC SWTEMPCOMPENSATION
FM IC
TX PATH
1st MIXER
1st IF
38.85MHz
450kHz
VGG
PLLLDCLOCKDATAPLLEN
APC
2nd L.O.
ANT
CHARGE SW
DC IN
TX LED BUSY LED
EEPROM
SP MUTE SW
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SPG
AFOSPKREM/TXD
IM
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DT
MF
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0
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T0
SP
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AF MUTE SW SQ
V
SM
V
5R
SQ FILTER
IF AMP
MICMUTESW
WX1050Hz
5MV5MV
VOXDETECTION AMP
DTMF/BEEP/1750/W-ALT
5T
AF AMP/LAMP AVR
8V
5C/5R/5T AVR
5MS
BIT
3
RXD
RE
M
TXD
PTTE
BTEMP
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PE
R
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KE
Y
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SPG
SPK
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5.0V AVR
RXDPTTE
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MIG
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CA
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CB
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KYO2
KYO1
BL
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3
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O2
KIN
0
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2
KY
O0
GN
D
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P
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O3
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T
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R
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TX-RX UNIT (X57-674X-XX)(A/3)
ENCAENCB
5C/5R/5T AVR 5C/5R/5T AVR 5C/5R/5T AVR 5C/5R/5T AVR
HPF
AF AMP
MPU
5.0V AVR
4.4V VOLTAGE DETECTION 3.3V VOLTAGE DETECTION
5R/5MVSW
MIC AMP
CTCSS/DCS/WX FILTER
VCO
RF AMPRF AMP
VCO SHIFT CONTROL SW
RIPPLE FILTER
RF AMP
RF AMP
DRIVEAMP
10KEY BOARD
TX-RX UNIT(X57-674X-XX)(B/3)
MENU
TX-RX UNIT(X57-674X-XX)(C/3)
REM
DTMF/BEEP DTMF/BEEP
DRIVEAMP
POWERAMP
APC CIRCUITOPERATION SW
APC OUTPUT SW
APC OUTPUTVOLTAGE LIMITTER
Q12 GATEVOLTAGE SW
OVER INPUTPROTECTION
ANTENNA SW
D12,13ANTENNA SWSPEED UP
TRIPLER
RX 1st AMP
Q10 OPERATION SW
VOLTAGEDROP
AF FILTER
WIDE/NARROWCHANGEOVER SW
Q56 OPERATION SWQ31
CONSTANT-CURRENTCIRCUIT
Q33 OPERATION SW
NI-MHTEMPERATUREDETECTION
DC INDETECTION
REVERSECURRENTPREVENTION
D33,35,36
Q36
AVRCONSTANT-VOLTAGE
Q37 OPERATION SWQ38
Q37
5MS SW5C SW
5T SW
BEAT SHIFT SW
LCD LED SW
KEY LED SW
TX/BUSYLED SW
WX DETECTION AMP
RF SW
RF SW
RX BPF TUNING
D18,19
D20,21
RX BPF TUNING
MIC MUTECONTROL
MIC ALCRECTIFICATION
D27
D24
VOX DETECTIONRECTIFICATION
SP MUTESPEED UP
C246 DISCHARGE
D26
REVERSE CURRENTPREVENTION
KEYILLUMINATIONLED
D42-44,46,47
D48,49
LCDILLUMINATIONLED
KEY TYPEDETECTION
D60 D62-65
MARKET CODEDETECTION
REVERSECURRENTPREVENTION
D69-72
5T5T
5T
5T
+B +B
+B
SQVSMV
5MV
AF
MV
OLI
N
REVERSE CURRENTPREVENTION
+B
5R 5R
5R 5R
5R
5R
5T
PO
WE
R S
W
KAPC KAPC
VGG
LIMITER
D74,79
REVERSE CURRENTPREVENTION
D80
5T
FINALFINAL
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BPF/APCBPF/APC
BPF/APCBPF/APC
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+B
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VO
UT
VS
S
VIN
1
VCC
VIN
RIPPLE
VOLIN
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NAR
ENCB
MOD
TO
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QT/DQT
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QT/DQT5R
5T5MS
5C
MOD
TONAR
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VOLIN
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MOD
TO
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5MS
QT/DQT
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SIGIN
TONEREM
5MV
RXLED
NOAA
VOXIN
5MV
TONE
SIGIN
REM
RXLED
NOAA
MICM
+B
MICM
+B
5MAFAMP
CHARGEBTEMP
BTDETDCDET
+B
RXD
SPMTXD
IMPTTE
MIG
8VAFAMP
BTEMP
TXDMIG
+B
CHARGE
5M
DCDET
PTTE
SPM
IM
RXD
BTDET
8V
SE
G14
SE
G15
VS
S
C0R
1
EN
CA
EN
CB
5MS
DV
CC
DV
SS
DT
MF
/BE
EP
TON
E
AV
CC
AV
RH
AV
RL
AV
SS
RE
M
SIG
INSQ
SM
VO
XIN
TH
ER
M
BAT
T
BT
EM
P
VC
C
CH
AR
GE
LAM
P
AFA
MP
NA
R
CO
M0
CO
M1
CLOCK
DATA
EEPDI
EEPCS
VOX
BPF/APC
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
FINAL
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
AFMKAPC
PLLLD
SMVSQV
CLOCK
5MV
DATA
5T
VOLIN
NAR
MOD
TO
5C5R
5MS
QT/DQT
SHIFT
PLLEN
+B
TEMPFINAL
5M
AFM
PLLLD
KAPCDATA
SMVSQV5MV
CLOCK
QT/DQT
VOLIN
5C5R
MOD
TO
5MS5T
NAR
SHIFT
PLLEN
+B
TEMPFINAL
5M
SI
SCK
HOLD
VCC
BATT
5MS SWLAMP
5C SWVOX
5R SW5T SW
BATT
5MS SWLAMP
5C SWVOX
5R SW5T SW
PTTI
5M
PTTI
5M
EEPDI
EEPCS
BPF/APC
EEPDI
EEPCS
BPF/APC
MIGIM
+B
5M
8V
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1KIN0
KIN4
KOUT2
RESETPWR SW
INT0
MIGIM
+B
5M
8V
KIN3
KIN0
KIN2KIN1
KIN4TYPE
KOUT3KOUT2KOUT1KOUT0VUKEY
INT0PWR SWRESET
*
7
1/F
4
2/VFO
5
8
0
6
9
#
3/MR
MR
F/CALL
VFO
CALL
* * *
CO
NT
GN
D1
NP
OU
T
VD
D
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SQVSMV
CLOCKDATAKAPCAFM
PLLENPLLLDSHIFT
+B
5C
FINALTEMP
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SMVSQV
DATACLOCK
AFMKAPC
SHIFT
PLLENPLLLD
+B
5C
FINALTEMP
MO
D
SQ
VS
MV
QT
/DQ
T
NA
R
PLL
EN
5MS
AF
M
SH
IFT
5CP
LLLD
TO
CLO
CK
5R DAT
A
VO
LIN
DAT
A
5R
CLO
CK
PLL
LD5CAF
M
PLL
EN
NA
R
QT
/DQ
T
SM
VS
QV
VO
LIN
BP
F/A
PC
5RNA
RS
MV
SQ
VB
PF
/AP
C
VCO FREQUENCY CONTROL
D1,2
VCO MODULATION
D6
D5
FREQUENCY SHIFT
FLO
CP
O
GN
D1
GN
D2
FIN
FIN
VC
C1
OS
CI
PLL LOCK DETECTION
D16
OUTPUT
VCC
REVERSE CURRENT PREVENTIOND14
B+IN
B-IN
BOUT
V+
ROTARYENCODER
&VOL KNOB
FINAL
KAPC
TEMP
VOLOUT
VOLIN
ENCB
GND
ENCA
GND
R16
9
100k
(D)
R18
6
68k
-t
C22
7
2.2u
4
R183
33k
TH
4
100k
R35
3
33k
TH-K2E
TH-K2AT
TH-K2ET
NO
R230
220
220
R257
56k
NO
NO
0
0
R258
680
R259
0
0
680k
R261
47k
NO
NO
NO
R264
0
0
R344
100k
NO
NO
E23-1081-05
NO
E23-1081-05
CN17
TH-K2AT 220 NO 0 0 NO 0 NO NO
TH-K2AT
TH-K2E
TH-K2ET
TH-K2AT
D44
B30-2205-05
B30-2205-05
NO
B30-2205-05
2-72
0-11
2-71
0-21
2-72
0-11
0-21
2-71
X57-674X-XX
X57-674X-XX
E
K,K2
E3
M,M2
E
M,M2
K,K2
E3
NO
B30-2205-05
B30-2205-05
B30-2205-05
D47 D60
NO
NO
NO
MA2S111
D62
MA2S111
MA2S111
MA2S111
NO
MA2S111
NO
NO
MA2S111
D63
NO
Q59
NO
2SK1830
NO
NO
NO
NO
C321
8200p
NO
C320
NO
NO
8200p
NO
0.1u
NO
C350
NO
NO
C510
100p
100p
NO
NO
NO
C511
470p
470p
C512
470p
470p
NO
NO
NO
NO
C514
470p
470p
NO
NO
470p
C515
470p
470p
470p
C516
NO
NO
470p
NO
470p
C517
NO
1000
p
1000
p
3.3k
470
MA
2S11
1
MA
2S11
1
OS
CIN
OS
CO
UT
MIX
OU
T
VC
C
IFIN
DE
C
FIL
OU
T
FIL
INA
FO
UT
QU
AD
IFO
UT
RS
SI
N-D
ET
N-R
EC
GN
D
MIX
IN
R17
2
10k
ON:6.90V
4.83V 4.66V
4.92V
4.68V 4.69V
T:4.95VR:0V
T:4.95VR:0V
5.01V
T:0VR:4.90V
4.45V
13.43V
13.8V
T:0VR:4.89V
11.45V
7.07V13.58V
4.80V
7.07V
3.23V
T:4.92VR:0V
2.08V
ON:4.78V
ON:4.76V
T:73mVR:3.39V
T:3.29VR:110mV
4.83V
T:4.23VR:0V
T:4.85VR:0V
1.30V
12.46V
12.29V
2.00V
1.40V
4.90V
2.29V(HIGH POWER)
4.63V1.58V
3.63V
4.45V
T:0VR:4.63V
W:111mVN:4.79V
4.76V
0.53V
4.82V
0.72V
4.71V
2.68V
2.42V 4.66V
0.27V
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
T:4.96VR:0V
4.31V
T:0VR:0V
Note :The components marked with adot ( ) are parts of layer1.
TH-K2AT/K2E/K2ET SCHEMATIC DIAGRAM
TH-K2AT/K2E/K2ET
55
BPF
Q9
Q11
Q16
Q10
Q12
Q17
BPF
Q24
MIC AMP
vco
ANTFILTER
50Ω
ANT
9.74Vrms
0.84Vrms
-18.68dBm
10.50dBm
4.17dBm
15.17dBm
11.00dBm
24.67dBm
20.83dBm
30.50dBm
AF(1kHz)
RF(145.99MHz)
ANTFILTER
-59.33dBm
-62.50dBm
-31.83dBm
-47.83dBm
vco
-35.83dBm
-17.33dBm
FM IC
IC3
IC6 AMP
RF(145.99MHz)
AF(1kHz)
IF(38.85MHz)
-53.00dBm
0.26Vrms
12.09mVrms
0.66Vrms
0.58Vrms
MIC
ANT
SP
-9.83dBm
IC16
LEVEL DIAGRAM
All
volta
ge le
vels
mus
t be
mea
sure
d at
Hig
h po
wer
tra
nsm
issi
on.
The
RF
and
IF s
ectio
ns a
re m
easu
red
by u
sing
a s
pect
rum
ana
lyze
r.A
fter
set
ting
the
stan
dard
(1 k
Hz,
3 k
Hz
Dev
.) de
viat
ion,
eac
h vo
ltage
of t
he A
F se
ctio
n is
mea
sure
d by
usi
ng a
n A
F V
TVM
or
osci
losc
ope.
The
leve
l for
eac
h po
int i
s m
easu
red
with
out r
emov
ing
part
s or
cut
ting
the
patt
ern.
All
volta
ge le
vels
mus
t be
mea
sure
d af
ter
sett
ing
the
AF
outp
ut v
olt-
age
at 0
.58V
rm
s.Th
e R
F an
d IF
sec
tions
are
mea
sure
d by
usi
ng a
spe
ctru
m a
naly
zer.
Eac
h vo
ltage
of
the
AF
sect
ion
is m
easu
red
by u
sing
an
AF
VTV
M o
ros
cilo
scop
e.Th
e le
vel f
or e
ach
poin
t is
mea
sure
d w
ithou
t rem
ovin
g pa
rts
or c
uttin
gth
e pa
tter
n.
Tra
nsm
itte
r S
ecti
on
Rec
eive
r S
ecti
on
TH-K2AT/K2E/K2ET
56
BLOCK DIAGRAM
Q23TCXO
LOOP FILTER
LPF
Q6
D1, D2
Q1
Q3
SHIFT SW
OSC
12.8MHz
D74,D75
IC5
HPF
Q30
VOX AMP
Q29,D22,D27
MIC AGC
IC16
SPLATTER FILTER
LIMITTER AMP
Q27
WIDE/NARR
IC8
MPU
1SV325
2SC5066(O)
2SK1830
KTC4082
2SK18302SC4617(R)2SC49191SS361RB706F-40
NJM2107F NJM2904V
DA221
TRIPLER
2nd Local
INT
S-80844 CNNBB85
IC10
RESET
IC11S-80930CNNBG80
IC15AT25160N
10SI27EEPROM
BEAT SHIFT
Q52RN1107
LCD
1SV305D6
REM,SQ,SM,BATT
DTMF/BEEP,TONE
BPF/APC
SEG0~31COM0~3
RXD,PTTE,PTTI,ENCA,ENCB,PWRSW,KIN0~4,TYPE
AFM,SPM,MICM,KAPC,FINAL,CHARGE,AFAMP,RXLED,BTDET,TXD5MS,5R,5T,5C(SAVE),VOX,KYO0~3,VUKEY
VCC,DVCCAVCC,AVRHHST(VCC),V3RESET
INTUPINTDW
CLOCKDATAEEPCSEEPDI
BSFT
X0
X1
PLLENPLLLDCLOCKDATA
BTEMP
KEY ILLMI
B30-2205-05
D42,43,46D44,47
2SK1830Q50
KEY ILLMI SW
LAMP
PTT
LAMP
MONI
D48,49RN4902
LCD ILLMI SW
Q51B30-2205-05
LCD ILLMI
DCDET
MOD
PTTIKIN4
KYO1KYO2
2SC5488
RF AMP
SIGIN
NAR
X57-674 B/3
NAR5MV
5R
5C
SHIFT
5C
Q47RN1701
TX/BUSYLED SW
TX/RX LED
B30-2156-05D40,41
B30-2157-05
5T
RXLED
5C
D24MA742
VOX DET
VOXIN
5T
5MV
VR1
5MS
VR5
VR6
TONE
TONE
KIN0~3
KYO0~3
VR6
VSS,DVSS,AVSS,AVRL
MICM
DTMF/BEEP
X57-674 C/3
H/L
H/L
D/A
A/D
PWM
X1
SWLIMITTER
PTTE/RXD
5M
X57-674 A/3
NOAA
J3
IC1
PLL IC
LMX2316TMX
TH-K2AT/K2E/K2ET
57
BLOCK DIAGRAM
J4
Q24
XF1 Q16
Q2 Q5
Q4,D7
LIPPLE FILTER
RF AMP RF AMP
D8, D9 Q9 Q10 Q11 Q12 D10
LPF
FINAL AMP ANT SW
Q58
BIAS SW
DRIVE AMPPRE-DRIVERF AMPTX/RX SW
Q17D18,D19 D20,D21
IC3
CD1
CF1
TA31136FN
FM IC IF AMP
MCF
RF AMPBPF BPF
SP MUTE SWAF AMP
IC6 Q56Q20
AF MUTE SW
Q21
AF FILTER
LPF
WIDE/NARR SW
Q22
Q15
SW
B
IC2
APC AMP
NJM2904V
Q14RN4902
APC SWAPC KILL SW
2SK1830
38.85MHz
3SK318
2SK12151SV305 1SV305
XB15A7092SK34762SK25962SC4926YD
2SC4617(R)
HSC277 2SC54882SC54882SC5488
2SC4617 2SK1830 TA7368FRN2105
SW
Q132SK1830
5T
5T
CPH3417
2SK1830
MUTE SW
Q31
38.4MHz
DE-EMPH
+
-
T
2SC5488
CT/DCS/WXA FILTER
IC17NJM2902V
5C5R
5C
5R
5R5R 5R BPF/APC
B
5R AFM AF AVR
BPF/APC
SPM
TEMP DET
TH1B57331V
2103J
5R
5R
APC V
D14MA2S111
FINAL
DTMF/BEEP
SQ,SM
J2
REM
/TXD
AMP
450kHz
(R)
BATT TERMINAL7.5V Norminal(6.0 - 9.0V)
WXA SW
2SK1824Q59
DC IN13.8V Norminal(12.0 - 16.0V)
RN2701
XC6202PB 52FR
IC1TCXOQ4,5,6D40,41
Q41
D32
D80
5T SW
Q37, Q38
2SK1830
5R
5T
5M
CHARGE SW
RB051L-40
IC6D48,49D42,43,46D47,44
BATT CHARGE
5R SW
TK11250 CUCB
5.0V
TK11250 CM
VR1ENC
AVR
5C SW
PROTECT
CPH3317
2SJ347
Q35
5C
CHARGE
BTDET
Q34
Q9,10,13D8,10TH1IC16Q47
Q57 D33
IC12
AVR
2SB1184(Q,R)2SC4617(R)
IC4
5MS SW
Q55
5MV SW
Q36
RB521S-30
5MV
DC-IN DET
RN2105
AF AMP
2SB1184 (Q,R)
PROTECT5.0V
11.5V
IC3,17D9,14Q16,17Q22,23,24Q59
AF/LAMP AVR
RN2105
Q53
PROTECT
THERM DET
IC5Q30
5MS
2SK1830
B
RB051L-40
Q33
AVR
IC9
ANT SW
D17HSM88AS
HVC131
ANT SW
D12,D13
BPF/APC
(Ktype only)
VR
ANT
D261SS388
D25MA2S111
CN2
B
PROTECT
D36RB521S-30
D35
PROTECT
RB521S-30
PROTECT
D30RB521S-30
TH-K2AT/K2E/K2ET
58
BC-21 (WALL CHARGER) / PB-43N (Ni-MH BATTERY PACK)
BC-21 External View
Rated output voltage ......... DC 13.8V ±5%Rated output current ......... 150mACharging time .................... Approx. 12 hours (PB-43N)
Photo is K type.
BC-21 Specifications
PB-43N External View
PB-43N Schematic diagram
T
Discharge terminal side
Rear charge terminal side
Thermister(DTN-103F3H-SYS)
T
Diode(ERB83-004)
Breaker(BBS80A2Y-01 80˚C)
Breaker(BBS70 A1N-01 70˚C)
(4N) (2N)
Thermister(DTN-103F3H-SYS)
Voltage .......................................... 7.2V (1.2V x 6)Charging current ............................ 1100mAhDimensions (Projections included) ... 58W x 100.8H x 16.8D (mm)Charger and charging time
KSC-24 (Rapid charger) ............. Approx. 60 minutesWeight ........................................... 210g
PB-43N Specifications
TH-K2AT/K2E/K2ET
59
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
TH-K2AT/K2E/K2ETSPECIFICATIONS
KENWOOD CORPORATION2967-3, Ishikawa-machi, Hachioji-shi, Tokyo 192-8525, Japan
KENWOOD U.S.A. CORPORATIONP.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745,U.S.A.
KENWOOD ELECTRONICS CANADA INC.6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBHRembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITEDKENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.(A.C.N. 001 499 074)16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113, Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road,Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.Sales Marketing Division1 Ang Mo Kio Street 63, Singapore 569110
Market code K, K2 M, M2 E E3
Number of memory channels 100 (50) + 9 specialfunction memories 100 (50) + 8 special function memories
Antenna impedance (Connector type) 50 Ω (SMA)
Operating VoltageDC IN Jack DC 12.0 ~ 16.0 V (13.8 V nominal)
Battery terminal DC 6.0 ~ 9.0 V (7.2 V nominal)
Grounding method Negative ground
Current
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-43N58 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-43NApprox. 320 g / 11.3 oz with BT-14
Transmission Mode F3E (FM) / F2D (FM)
Frequency range 144 ~ 148 MHz 136 ~ 174 MHz 144 ~ 146 MHz
Output Power
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
Reception Mode F3E (FM) / F2D (FM)
Frequency range 136 ~ 174 MHz 144 ~ 146 MHz
Intermediate Frequency (IF) 1st IF : 38.85 MHz2nd IF : 450kHz
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.
General TH-K2AT TH-K2E TH-K2ET
Transmitter
Receiver