Document text
144MHz FM TRANSCEIVER
TH-K2AT/K2E/K2ET
© 2003-8 PRINTED IN JAPAN
B51-8658-00 (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
CONTENTS
SCHEMATIC DIAGRAM.......................................... 50
LEVEL DIAGRAM .................................................... 55
BLOCK DIAGRAM ................................................... 56
BC-21 (WALL CHARGER) ....................................... 58
PB-43N (Ni-MH BATTERY PACK) .......................... 58
BT-14 (BATTERY CASE) ......................................... 59
PG-4Y (PROGRAMMING INTERFACE CABLE) ..... 59
MCP-1A (MEMORY CONTROL PROGRAM) ......... 59
SPECIFICATIONS .................................BACK COVER
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
chassis
1. 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 case
assembly (b).
5. Remove the speaker lead (m) from the connector (CN2) of
the 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 close
to the antenna terminal.
10. Remove the TX-RX PC board from the chassis, then remove
the encoder volume FPC (≤) from the flat cable connector
of the TX-RX PC board.
CN2
CN9
CN6
x
x
c
c
v
m
b
,
,
.
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 terminal
section, install two screws on the PC board and bring the
PC board into contact with the chassis (z).
2. Solder the antenna terminal with a soldering iron (x).
3. Remove the two screws installed in step 1 above, and install
the two screws again on the PC board together with the
shield cover (c).
Replacing the final FET (Q12)
1. Remove the two screws holding the shield cover of the
final FET section (z).
2. Remove solder from the shield cover completely with a
solder absorber. (E and E3 types only)
3. Remove the shield cover (x).
z
x
c
z
x
4. Apply the tips of soldering irons to all the four pins of the final
FET at the same time (c), heat them sufficiently, and remove
the final FET (v). (Two persons should be required to do this.)
5. Remove all PC boards from the chassis.
6. Confirm that there is no space between the radiation plate
installed on the foil side of the TX-RX PC board (TX-RX unit
A/3) and the PC board (b). If there is any space between
the radiation plate and PC board, eliminate it by applying
the tip of the soldering iron to the radiation plate.
7. Apply the tip of the soldering iron to the installation side of the
radiation plate of the TX-RX PC board, put a little amount of
solder to the radiation plate that is seen through a square hole
in the final FET installation section and melt the solder (n).
8. When the solder in step 7 is melted, place the final FET on
the PC board by aligning it with the silk of the final FET
installation section of the PC board (m).
9. Release the soldering iron and confirm that the final FET
and radiation plate have been soldered.
10. Solder the four pins of the final FET with the soldering iron.
11. Install all the PC boards.
12. Reinstall the shield cover removed in step 3 above in its
original position and install two screws.
13. Solder the shield cover to the PC board. (E and E3 types
only)
14. Install the chassis on the case assembly and assemble them.
15. Readjust transmission power.
Note: Since the FET is sensitive to static electricity, always
wear a grounding band. Use a highly insulated ceramic
heater solder iron.
Radiation plate
TX-RX PC board
b
c
v
m
n
TH-K2AT/K2E/K2ET
4
DISASSEMBLY FOR REPAIR
Special care and attention required for assembly
1. Gluing to the key top (MIC element section)
You must also glue on the speaker storage area and heap
the glue up until wealthy glued on the speaker storage area
and the key top for waterproofing the MIC element side of
the key top. (Fig. 1)
Fig. 1
2. Bending the LCD hardware fixture (J21-8456-03) tabs
(1)Insert the tabs of the LCD hardware fixture into four holes
in the LCD installing position of the TX-RX PCB (TX-RX unit
A/3). (Fig. 2)
Heap the glue up until wealthy glued on the speaker
storage area and the key top (MIC element section).
Fig. 2
(2)By pressing the LCD hardware fixture from the component
side of the TX-RX PCB, you must bent all 4 tabs of the LCD
hardware fixture being visible from the foil side until the
bases of each tabs are folded at least 45 degrees (Fig. 3). If
the bending angle of the tabs of the LCD hardware fixture
is less than 45 degrees, a display error may occur.
Bending position
NG
NG
Min 45
degrees
3. PTT PCB (TX-RX unit C/3) installation procedure
Installing the PTT PCB on the TX-RX PCB and chassis are
as follows:
(1)Insert the PTT PCB connector (CN7) into the TX-RX PCB
connector (CN6) lightly.
(2)Push three parts of the PTT PCB to contact tightly with the
chassis. There may be a small gap between the connectors.
(Fig. 4)
Note: A double-side adhesive tape (J99-0376-04) is used
behind the PTT switch. When reassembling the PTT
PCB to the chassis, press the PTT PCB (under the PTT
switch) so that the tape hold the PCB and chassis
securely.
Fig. 3
CN6
Chassis
PTT switch
PTT PCB (C/3)
OK
A bit
clearance
No
clearance
NG
CN6
CN7
CN7
Chassis
PTT PCB (C/3)
PTT switch
Fig. 4
Push three parts of the PTT PCB
to 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 chassis
groove as shown in Fig. 5. (z)
(2)Install the packing TX/BUSY lamp section on the chassis.
(x)
z
x
OK
Packing
NG
Packing
Chassis
Chassis
5. Packing (G53-1572-02) bottom installation procedure
(1)Before installing the numeric key PCB (TX-RX unit B/3) on
the chassis, push three parts of the packing to contact tightly
with the chassis as shown in Fig. 6. If the packing is not in
contact with the chassis, there may be a gap between the
transceiver bottom case assembly and the battery, and
water may enter through the gap.
Fig. 5
OK
NG
Push three parts of the packing to
contact 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 section
is has been past through the hole in the illumination guide
section 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 the
leads over the key top section, LCD section or SP/MIC/DC
IN cap section.
Do not fix this part of the
key top to the rib of the
case assembly.
7. Cautions for installing the key top on the case assembly
(1)Install the key top keypad section and the power switch
section on the rib of the case assembly.
(2)Do not fix the part between the key top keypad section and
the power switch section to the rib of the case assembly,
but install it as shown in Fig. 8.
The packing TX/BUSY lamp section is has
been past through the hole in the illumination
guide section on the top of the case assembly.
Fig. 8
TH-K2AT/K2E/K2ET
6
CIRCUIT DESCRIPTION
Frequency Configuration
The frequency configuration is shown in Figure 1 and
Table 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 :
ANT
SW
MCF
38.85MHz
38.4MHz
12.8MHz
450kHz
CF
MIX, IF,
DET
AF
AMP
SP
PRE
DRIVE
FINAL
TCXO
DRIVE
Tripler
x 3
RF
AMP
1st MIX
PLL
VCO
MIC
AMP
MIC
ANT
Receiver System
■ Front End
The received signal from the antenna passes through a low-
pass filter and then through a transmission/reception switching
circuit (antenna switch) and enters the band-pass filter (L40,
L41, L38).
The signal passing through the band-pass filter (L40, L41,
L38) is amplified by with an RF amplifier (Q17), passes through
a band-pass filter (L32, L35) and enters the first mixer (Q16).
These band-pass filters are tuned to a desired frequency
by varicaps (D21, D20, D19, D18).
Double super heterodyne
Reception method
1st IF Frequency
38.85MHz (Upper)
2nd IF Frequency 450kHz (Lower)
Transmission method VCO direct oscillation amplification
Modulation
Variable reactance phase modulation
Table 1 Basic configuration
ANT
SW
SP
LPF
VCO
BPF/APC
MPU
IC8
PLL
IF AMP,
DET
Tripler
x 3
TCXO
BPF
L41,L40,L38
BPF
L32,L35
MIXER
Q16
1st Local OSC
(PLL)
RF AMP
Q17
ANT
MCF
XF1
IF AMP
Q24
FM IC
IC3
Q23
2nd Local OSC
X1
AF AMP
IC6
5R
5R
D20
D21
LV
6
Tuning voltage
D18
38.85MHz
12.8MHz
D19
A tuning voltage corresponding to the desired signal is
applied to each varicap through the BPF/APC terminal (pin 6)
of the MPU (IC8) to tune to the receive frequency.
■ First Mixer
The received signal passing through the band-pass filter
(L32, L35) is mixed with the first local signal generated by the
VCO by the first mixer (Q16) to produce a first IF signal (38.85
MHz) (Upper heterodyne).
The first IF signal passes through a MCF (Monolithic crystal
filter: XF1) to remove unwanted components.
The first IF signal passing through the MCF (XF1) is amplified
by an IF amplifier (Q24) and the resulting signal enters the FM
IC (IC3).
Fig. 2 Receiver section configuration
Item
Rating
Nominal center frequency (fo)
38.85MHz
Pass bandwidth
±6.0kHz or more at 3dB
Attenuation bandwidth
±25kHz or less at 35dB
Ultimate attenuation
70dB or more (fo –910 kHz)
Spurious response
40dB or more (fo +1MHz)
Ripple
1dB or less
Insertion loss
4dB or less
Terminating impedance
610Ω ±5% // 3pF ±0.5pF
Table 2 MCF (L71-0619-05) characteristics (TX-RX unit XF1)
Item
Rating
Nominal center frequency (fo)
450kHz
3dB bandwidth
±6.5kHz or more
50dB bandwidth
±15.5kHz or less
Ripple
2dB or less (fo ±6.5kHz)
55dB or more
Guaranteed attenuation
(fo ±18kHz to ±33kHz)
50dB or more (fo ±100kHz)
Insertion loss
4dB or less
I/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 12.8
MHz reference oscillator frequency of the TCXO (X1) by Q23, are
mixed in the FM IC to produce a second IF signal (450 kHz) (Lower
heterodyne).
The second IF signal passes through a ceramic filter (CF1)
to remove unwanted components.
The second IF signal passing through the ceramic filter (CF1)
passes through the IF amplifier in the FM IC again and is
detected to produced an audio signal.
■ Squelch and Mute Circuit
A noise component is obtained by passing FM detection
output (FM IC pin 9) through an operational amplifier in the
CF1
450kHz
CD1
AF OUT
AFM
SM
SQ
IC8
MPU
49
9
48
SMV
SQV
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
MIX
Local
OSC
Buffer
RSSI
Quadrature
detector
LPF
Noise
AMP
IF AMP
Inverter
AMP
1st IF input
(38.85MHz)
IC3
FM IC
2nd local OSC
(38.4MHz)
5R
Q21
AF FILTER
Q20
AF MUTE
SWITCH
VOL IN
R135
C173
C174
R125
R126
Noise
comp
Rectifier
5R
SP
AF OUT
AF
FILTER
Q21
AF MUTE
SWITCH
Q20
IC6
AF AMP
IC3
FM IC
VR201
AF VOLUME
DTMF/BEEP
REM
IC8
MPU
SPK
AFO
SPG
REM/TXD
40
46
9
J4
SP 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 to
produce a DC voltage, which is output from the N-REC terminal
(pin 14) of the FM IC as squelch voltage.
The squelch voltage enters the SQ terminal (pin 48) of the
MPU (IC8) and is compared with the reference voltage preset
in the MPU to control audio signal ON/OFF.
When "L" is output from the AFM terminal (pin 9) of the MPU,
the AF mute switch (Q20) is activated to mute the audio signal.
■ S Meter Circuit
The S meter voltage is output from the RSSI terminal (pin
12) of the FM IC (IC3) and input to the SM terminal (pin 49) of
the MPU. Then the voltage is converted from analog to digital
in the MPU to control the S meter display on the LCD.
■ AF Amplifier
The detected audio signal passes through an AF filter (Q21)
and enters an AF mute switch (Q20).
After passing through the AF mute switch (Q20), the signal
passes through an AF volume (VR201) and is amplified to a
specified output level with an AF amplifier (IC6).
The audio signal amplified with the AF amplifier (IC6) is
output through an internal speaker or an external speaker
jack (J4).
The beep tone and the DTMF signal are output from the
DTMF/BEEP terminal (pin 40) of the MPU (IC8), enters the AF
amplifier (IC6) and is output as a monitor tone.
TH-K2AT/K2E/K2ET
8
CIRCUIT DESCRIPTION
Transmitter System
■ Microphone Amplifier Circuit
The audio signal from the microphone passes through a
high-pass filter (IC5) and enters a microphone amplifier (IC16).
The signal passes through a pre-emphasis circuit, limiter
amplifier and splatter filter inside the microphone amplifier.
The splatter filter will remove distortion outside the audio band.
■ Modulation Circuit
The audio signal amplified by the microphone amplifier
(IC16) passes through a semi-fixed volume (VR5) for
modulation adjustment, and goes to the VCO modulation
varicap (D6) for variable reactance phase modulation.
■ Drive and Final Circuit
The output signal from VCO (Q1) passes through an RF
amplifier (Q2, Q5, Q9) and drive amplifier (Q10, Q11), and is
amplified by a power amplifier (Q12).
■ Transmission/Reception Switching Circuit
The signal amplified by the power amplifier (Q12) passes
through a transmission/reception switching circuit and a low-
pass filter, and is fed to the antenna.
MIC
IC5
HPF
IC16
MIC AMP
Pre-
emphasis
Splatter
filter
VCO
Limiter
6
1
Fig. 5 Microphone amplifier circuit
MIC
HPF
MIC
AMP
IC16
ANT
SW
D10,L19
D12,D13
VCO
Q1
LPF
IC5
VR5
MAX DEV
Q2
RF AMP
Q5
RF AMP
Q9
RF AMP
Q10
DRIVE AMP
Q11
DRIVE AMP
Q12
POWER AMP
ANT
Fig. 6 Modulation, Drive, Final and
Transmission/reception switching circuit
■ APC Circuit
The APC (Automatic Power Control) circuit is used to obtain
a stable transmission power and controls transmission output
by detecting the drain current of Q11 and Q12.
The transmission output can be changed in three levels:
High, Mid, and Low.
The reference voltage is output from the BPF/APC terminal
(pin 6) of the MPU (IC8) and the detection voltage generated by
R70, R71 and R72 are fed to the APC differential amplifier (IC2).
The voltage in proportion to the difference between
reference voltage and detection voltage is output from the
BOUT terminal (pin 7) of IC2 as an APC voltage.
Q10
Q15
Q11
Q12
VGG
Q58
VDD
LPF
ANT
D12
D13
RX
5T
B
1 AOUT
IC2
APC AMP
2 A–IN
3 A+IN
4
8
7
6
5
GND
V+
BOUT
B–IN
B+IN
R72
R71
R70
Q14
B
Q13
+
TH1
–t
Q55
7 KAPC
51
6 BPF/APC
THERM
16
FINAL
IC8
MPU
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 transmit
mode 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 Q58
by transmission power supply voltage and transmission power.
For example, if the power supply voltage during transmission,
is equal to or higher than approx. 10.5 V and if power is at Mid
or Low level, the APC voltage level applied to Q12 is reduced
by Q58.
■ Temperature Protection Circuit
To prevent thermal destruction of the power amplifier (Q12),
this circuit reduces APC voltage when Q12 temperature rises.
The MPU (IC8) detects temperature with a thermistor (TH1)
and controls reference voltage to the APC circuit.
PLL System
■ PLL Circuit
A reference frequency of 5 kHz or 6.25 kHz is produced by
dividing the 12.8 MHz reference frequency of the TCXO (X1)
with PLL IC (IC1). Comparison frequency is produced by
TCXO
PLL IC
IC1
LOOP
FILTER
TO
TCXO
5C
5/0V
5MS
5/0V
PLL
5C
5/0V
VC
X1
12.8MHz
CLOCK
DATA
LE
Fo/LD
IF
Rectifier
LPF
Q6
RF
Amp
D1,D2
VCO
5C
5/0V
LV
1~5V
SHIFT
H/L
Ripple
Filter
Q4
OSC
Q1
Buff
Amp
Q2
RF
Amp
Q5
SW
D8,D9
MOD
SHIFT
SW
Q3
MOD
12.8MHz
TX
RX
5T 5/0V
5R 5/0V
VR1
Fig. 8 PLL and VCO circuit
amplifying VCO output with an RF amplifier (Q6) and dividing
it with the PLL IC.
The PLL synthesizer with 5 kHz and 6.25 kHz step is
configured by comparing phases of the reference frequency
and comparison frequency.
The phase difference between reference frequency and
comparison frequency passes through a charge pump in the
PLL IC, then ripples are removed with a loop filter with low-
range passing characteristics to produce VCO control voltage
(lock voltage).
■ VCO Circuit
The VCO produces a desired frequency directly with a
Colpits oscillation circuit containing an oscillation transistor (Q1)
used for both transmission and reception.
The VCO control voltage is applied to varicap (D1, D2) to
produce a desired frequency.
The SHIFT terminal (pin 113) of the MPU (IC8) goes "H"
during reception, and the shift control switch (Q3) is turned
ON to change oscillation frequency.
Fo/LD
PLL LD
IC8
MPU
IC1
PLL IC
R32
D16
C40
R35
14
102
5C
Fig. 9 Unlock detection circuit
■ Unlock Detection Circuit
When the PLL is unlocked, the waveform of the pulse
output from the Fo/LD terminal (pin 14) of the PLL IC (IC1) is
rectified with R32, D16, R35 and C40, and the Fo/LD terminal
is made “L” level. The voltage at the Fo/LD terminal is
detected by the MPU to control transmission/reception
switching timing.
TH-K2AT/K2E/K2ET
10
Power Supply Circuit
■ Charging Circuit
When an external power supply is connected to the DC IN
terminal, the constant-current circuit consisting of Q33 and
D31 provides a constant current of approx. 110 mA to the Ni-
MH battery.
If no external power supply is connected to the DC IN
terminal, the constant-current circuit does not function.
■ Power Supply Switching Circuit
The voltage supplied through the battery terminal or DC IN
terminal is branched in the power supply switching circuit as
shown in Fig.10 and then supplied to the required components.
■ Battery Type Recognition Circuit
When the battery pack is attached to the transceiver, the
battery type is recognized with the T terminal on the
transceiver. This battery type recognition activates charging
for the Ni-MH battery pack and displaying the battery meter.
+
-
T
B
J2
RN2701
XC6202PB
52FR
Q41
D32
D80
5T SW
Q37, Q38
2SK1830
5M
CHARGE
SW
RB051L-40
IC6
D48,49
D42,43,46
D47,44
BATT
CHARGE
5R SW
TK11250
CUCB
5.0V
TK11250
CM
AVR
5C SW
PROTECT
CPH3317
2SJ347
Q35
CHARGE
BTDET
Q34
Q57
D33
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)
PROTECT
5.0V
11.5V
AF/LAMP
AVR
RN2105
Q53
PROTECT
THERM
DET
2SK1830
B
RB051L-40
Q33
AVR
IC9
B
PROTECT
D36
RB521S-30
D35
PROTECT
RB521S-30
PROTECT
D30
RB521S-30
IC8
MPU
D31
DA221
CONSTANT
CURRENT
BTEMP
DCDET
BATT TERMINAL
7.5V Norminal
(6.0 - 9.0V)
DC IN
13.8V Norminal
(12.0 - 16.0V)
IC1
TCXO
Q4,5,6
D40,41
5R
5T
VR1
ENC
5C
Q9,10,13
D8,10
TH1
IC16
Q47
5MV
IC3,17
D9,14
Q16,17
Q22,23,24
Q59
IC5
Q30
5MS
Fig. 10 Charging and Power supply switching circuit
Control System
■ Reset and Backup Circuit
When power is supplied to the transceiver, the 5M voltage
goes “H” as C303 is charged.
A rising edge of the 5M voltage is detected by the voltage
detection IC (IC11) and when its output (RESET) goes “H”,
the reset status of the MPU is released.
D35
R244
5M
5C
C307
R243
L63
BATT
5V
AVR
IC9
IC8
MPU
IC15
EEPROM
Timing chart
Power
ON
5V
5M
0
Power
OFF
IN
OUT
C303
+
IC11
IN
OUT
RESET
IC10
IN
OUT
INT
5V
RESET
0
5V
INT
0
If the supplied voltage to the transceiver is reduced and
the 5M voltage falls below the detection voltage of the voltage
detection IC (IC10), the MPU detects it by an interrupt
processing, backs up data in EEPROM (IC15) and turns the
power off.
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) and
enters the BATT terminal (pin 52) of the MPU.
Battery voltage is used for battery meter indication during
transmission or for alert tone processing when an abnormal
power supply voltage (approx. 16.5 V or higher) is applied.
Squelch voltage becomes DC voltage by detecting changes
in noise voltage in the FM IC (IC3), and the signal is used for
squelch control.
The S meter voltage is output from the RSSI pin of the FM
IC to control S meter display.
Detection of thermistor voltage (temperature) in the Ni-MH
battery during charging, detection of remote microphone key
pressing and VOX voltage monitoring are performed through
each A/D port of the MPU.
■ 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 the
battery save mode.
Battery save operation is performed by controlling Q57 with
an output signal from the 5C (SAVE) terminal (pin 15) of the
MPU.
The 5C ON/OFF cycle ratio during battery saving can be set
from a transceiver menu.
5MS
5C
5M
Q41
Q57
37
15
5MS
5C (SAVE)
IC8
MPU
Fig. 12 Battery save circuit
■ LED Drive Circuit
The LCD and key illumination LEDs are lighted by controlling
Q51 for the LCD and Q50 for keys according to the output
voltage from the AF/LAMP AVR (Q37).
The BUSY and TX illumination LEDs are lighted by controlling
Q47.
B
AF AMP
D33
Q38
Q37
56 LAMP
IC8
MPU
99 RX LED
D48
D49
D42
D43
D46
Q50
D41
BUSY 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) of
the MPU.
The PTT key is assigned to the dedicated port (pins 13, 14)
of the MPU.
SET
CALL
#
0
∗
MONI
MR
9
8
7
LAMP
VFO
6
5
4
MENU
F
3
2
1
KIN0
KOUT0
KOUT1
KOUT2
KOUT3 PWRSW
95
S7
POWER
SW
J3
ROTARY
ENCODER
KIN1
KIN2
KIN3
KIN4
IC8
MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
SET
MONI
LAMP
MENU
CALL
MR
VFO
F
KIN0
KOUT0
KOUT1
KOUT2
KOUT3
95
S7
J3
KIN1
KIN2
KIN3
KIN4
IC8
MPU
PTTI
14
PTTE
13
ENCB
36
ENCA
35
PWRSW
POWER
SW
ROTARY
ENCODER
Other keys composes a matrix and key presses are detected
by scanning them by software.
The encoder reads data using the interrupt port (pins 35
and 36) of the MPU.
16 key (K, K2, M, M2 and E3 types)
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 output
from the TONE terminal (pin 41) of the MPU.
The unwanted high-frequency components of the encode
signal output from the MPU are removed with a low-pass filter,
and applied to VCO modulation input (MOD) and TCXO VC
terminal for modulation.
The VCO and TCXO modulation levels are adjusted by VR6
to produce flat modulation characteristics in low and high
ranges.
The decode signal is input to the SIGIN pin (pin 47) of the
MPU after the waveform of the audio signal from the FM IC is
rectified with a CTCSS/DCS filter (IC17). Then the set CTCSS
tone frequency and DCS code are detected by digital signal
processing in the MPU to control muting.
LPF
VR6
VCO
VOL OUT
MOD
X1
TCXO
VC
IC16
1
6
MIC
AMP
IC5
HPF
MIC
IC6
AF AMP
Vin
IC8
MPU
TONE
41
40
47
111
9
SIG IN
VOX IN
NOAA
K, K2 types only
DTMF/BEEP
IC17
D24
Q30
IC3
CTCSS/DCS
FILTER
FM
IC
50
VR5
AMP
■ DTMF
The DTMF signal is generated by the MPU (IC8) and is
output from the DTMF/BEEP terminal (pin 40) of the MPU.
The DTMF signal is mixed with an audio signal at the input
side of the AF amplifier (IC6), and is output as a monitor tone.
The DTMF signal is mixed with a modulation signal at the
input side of pre-emphasis in the microphone amplifier (IC16)
and used as a transmit signal.
■ VOX
The IC5 and Q30 amplify the audio signal captured in the
microphone, and then the signal is converted into the DC
Voltage D24 rectifies.
The DC voltage activates the MPU (IC8), and the VOX starts.
■ Weather Alert (K and K2 types only)
The IC17 apmlifies the detected signal from the FM IC (IC3),
and the MPU (IC8) processes the signal. This signal processing
activates Weather Alert function.
Fig. 15 CTCSS/DCS, DTMF, VOX, Weather alert
■ Serial Control
Serial control must be enabled from a transceiver menu so
that the REM/TXD pin of the speaker jack (J4) and the PTT
(RXD) pin of the microphone jack (J3) function as TXD and
RXD, respectively, when communicating with a personal
computer.
SP
POUT
10
HPF
IC5
IC6
AF AMP
PTTE
TXD
RXD
REM
IC8
MPU
SPK
AFO
SPG
REM/TXD
13
46
J4
SP JACK
IM
5MS
+
–
PTT
MIC
J3
MIC 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 output
2
DATA
O
Common serial data output
3
EEPDI
I
Data input from EEPROM
4
EEPCS
O
Chip select output to EEPROM
5
VOX
O
VOX power supply switch
L:ON
6
BPF/APC
O
BPF tuning voltage output, APC voltage
output (PWM)
7
KAPC
O
APC ON/OFF switch
L:APC ON
8
VCC
-
Positive power supply
9
AFM
O
AF mute switch
L:Mute
10
SPM
O
Speaker mute switch
H:Mute
11
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:ON
14
PTTI
I
[PTT] key input
L:ON
15
5C(SAVE)
O
Save power supply switch
L:ON
16
FINAL
O
Gate bias control of TX final amplifier
L:Bias ON
17
SEG0
O
LCD segment output 0
18
SEG1
O
LCD segment output 1
19
SEG2
O
LCD segment output 2
20
SEG3
O
LCD segment output 3
21
SEG4
O
LCD segment output 4
22
SEG5
O
LCD segment output 5
23
SEG6
O
LCD segment output 6
24
SEG7
O
LCD segment output 7
25
SEG8
O
LCD segment output 8
26
SEG9
O
LCD segment output 9
27
SEG10
O
LCD segment output 10
28
SEG11
O
LCD segment output 11
29
SEG12
O
LCD segment output 12
30
SEG13
O
LCD segment output 13
31
SEG14
O
LCD segment output 14
32
SEG15
O
LCD segment output 15
33
VSS
-
GND
34
COR1
-
Power supply stabilization (Connected to
VSS through 0.1uF)
35
ENCA
I
Encoder A side input
36
ENCB
I
Encoder B side input
37
5MS
O
5MS main power supply switch L:ON
38
DVCC
-
Reference voltage input for DAC
39
DVSS
-
Ground for DAC
40
DTMF/
O
Encode waveform output of DTME/BEEP/
BEEP
1750Hz (D/A)
41
TONE
O
Encode waveform output of CTCSS/DCS
(D/A)
42
AVCC
-
Positive power supply for ADC
43
AVRH
-
Reference voltage input for ADC
44
AVRL
-
Ground reference voltage input for ADC
45
AVSS
-
Ground for ADC
46
REM
I
Remote control microphone key voltage
input (A/D)
47
SIGIN
I
Decode waveform input of CTCSS/DCS
(A/D)
Pin
Pin
I/O
Function
No.
Name
Pin
Pin
I/O
Function
No.
Name
48
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
I
Detection of thermistor voltage (temperature)
in the Ni-MH battety (A/D)
54
VCC
-
Positive power supply
55
CHARGE
O
Battery charge circuit power supply switch
H:ON
56
LAMP
O
Lamp power supply switch
H:ON
57
AFAMP
O
AF amplifier/Lamp AVR power supply
switch
H:ON
58
NAR
O
Wide/Narrow switching
H:Narrow
59
COM0
O
LCD common output 0
60
COM1
O
LCD common output 1
61
COM2
O
LCD common output 2
62
COM3
O
LCD common output 3
63
VSS
-
GND
64
SEG16
O
LCD segment output 16
65
SEG17
O
LCD segment output 17
66
SEG18
O
LCD segment output 18
67
SEG19
O
LCD segment output 19
68
SEG20
O
LCD segment output 20
69
SEG21
O
LCD segment output 21
70
SEG22
O
LCD segment output 22
71
SEG23
O
LCD segment output 23
72
SEG24
O
LCD segment output 24
73
NC
-
Not used
74
NC
-
Not used
75
SEG25
O
LCD segment output 25
76
SEG26
O
LCD segment output 26
77
SEG27
O
LCD segment output 27
78
SEG28
O
LCD segment output 28
79
SEG29
O
LCD segment output 29
80
SEG30
O
LCD segment output 30
81
SEG31
O
LCD segment output 31
82
V0
-
Not used
83
V1
-
Not used
84
V2
-
Not used
85
V3
-
LCD drive power supply 3
86
HST(VCC)
I
Not used (VCC)
87
MD2
I
L fixed
88
MD1
I
H fixed
89
MD0
I
H fixed
90
RESET
I
Reset input
L:Reset
91
VSS
-
GND
92
X0
I
System clock (7.9872MHz)
93
X1
O
System clock (7.9872MHz)
94
VCC
-
Positive power supply
95
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
I
DC IN detection interrupt input (↓)
L:DC IN connected
99
RXLED
O
Busy LED output
H:ON
100
BSFT
O
Beat shift swiching output
H:ON
101
PLLEN
O
Serial enable output to PLL IC
102
PLLLD
I
Lock detection input from PLL IC H: Lock
103
KIN0
I
Key matrix input 0
104
KIN1
I
Key matrix input 1
105
KIN2
I
Key matrix input 2
106
KIN3
I
Key matrix input 3
107
KIN4
I
Key matrix input 4
108
TYPE
I
Market code bit input
109
VUKEY
I
Detection of 4 key or 16 key
110
MICM
O
Microphone mute switch
H:Mute
111
NOAA
I
1050Hz tone detection input
112
5R
O
RX power supply switch
L:ON
113
SHIFT
O
VCO shift switch
L:TX, H:RX
114
5T
O
TX power supply switch
L:ON
115
KOUT0
O
Key matrix output 0
116
KOUT1
O
Key matrix output 1
117
KOUT2
O
Key matrix output 2
118
KOUT3
O
Key matrix output 3
119
VSS
-
GND
120
BTDET
O
Battery detection switch
L:ON
SEMICONDUCTOR DATA / COMPONENTS DESCRIPTION
Pin
Pin
I/O
Function
No.
Name
IC1
PLL IC
IC2
APC differential
amplifier
IC3
FM IC
IC4
11.5V AVR
IC5
HPF
Active filter
IC6
AF amplifier
IC8
MPU
IC9
5.0V AVR
IC10
4.4V voltage
MPU INT voltage detection
detection
IC11
3.3V voltage
MPU Reset voltage detection
detection
IC12
5.0V AVR
IC15
EEPROM
IC16
MIC amplifier Limiter, splatter filter
IC17
CTCSS/DCS/WX Active filter
filter
Q1
VCO
Q2
RF amplifier
Q3
VCO shift
On RX
control switch
Q4
Ripple filter
Q5,6,9
RF amplifier
Q10,11
Drive amplifier
Q12
Power amplifier
Q13
APC circuit
On TX
operation switch
Q14
APC output
On TX
switch
Q15
Q10 operation On TX
switch
Q16
1st mixer
Q17
RX 1st amplifier
Q20
Audio mute
Audio mute when off
switch
Q21
Audio filter
Active filter
Q22
Wide/narrow
On when wide is selected
changeover switch
Q23
Tripler
2nd local
Q24
IF amplifier
1st IF 38.85MHz
Q27
Wide/narrow
On when wide is selected
changeover switch
Q29
MIC mute
Mutes when ON
switch
Q30
VOX detection
amplifier
Q31
Q56 operation Off when the speaker outputs audio
switch
Q33
Charge switch
Ref. No.
Use/Function
Operation/Condition/Compatibility
TX-RX UNIT (X57-674X-XX)
COMPONENTS DESCRIPTION
TH-K2AT/K2E/K2ET
16
D33
Reverse current Battery
prevention
D34
AVR
constant-voltage
D35
Reverse current Battery
prevention
D36
Reverse current DC IN
prevention
D40
TX LED
Lights on TX
D41
BUSY LED
Lights on RX
D42-44
Key illumination Key backlight illumination
D46,47
LED
D48,49
LCD illumination LCD backlight illumination
LED
D60
Key type
detection
D62-65
market code
detection
D69-72
Reverse current Key matrix
prevention
D73
Voltage drop
D74,79
Limiter
D80
Reverse current
prevention
COMPONENTS DESCRIPTION
Q34
Q33 operation On when charging
switch
Q35
DC IN detection H: DC IN detection
Q36
Ni-MH temperature On when temperature detection is
detection
activated
Q37
AF amplifier/
Lamp AVR
Q38
Q37 operation On when the speaker outputs audio or
switch
lamp lights
Q41
5MS switch
On when 5MS is applied
Q47
TX/BUSY LED
switch
Q50
Key LED switch On when the key LED lights
Q51
LCD LED switch On when the LCD LED lights
Q52
Beat shift switch
Q53
5R/5MV switch On when 5R or 5MV is applied
Q55
5T switch
On when 5T is applied
Q56
Speaker mute
switch
Q57
5C switch
On when 5C is applied
Q58
Q12 gate
Off when High power is selected
voltage switch
Q59
WX detection
amplifier
D1,2
VCO frequency
control
D5
Frequency shift
D6
VCO modulation
D7
Speed up
Ripple filter
D8
RF switch
On TX
D9
RF switch
On RX
D10-13
Antenna switch On TX
D14
Reverse current
APC reference voltage
prevention
D15
APC output
voltage limiter
D16
PLL lock detection
D17
Over input
protection
D18-21
RX BPF tuning
D22
MIC mute control
D24
VOX detection
rectification
D25
Speaker mute
speed up
D26
C246 discharge
D27
MIC ALC
rectification
D30
Reverse current Charge current
prevention
D31
Constant-current Constant-current charge
circuit
D32
Reverse current DC IN
prevention
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: Canada
Y: PX (Far East, Hawaii)
T: England
E: Europe
Y: AAFES (Europe)
X: Australia
M: Other Areas
Parts No.
Description
Address New
parts
Destination
Destination
TH-K2AT/K2E/K2ET
Ref. No.
Parts No.
Description
Address New
parts
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-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
1
3A,2G
*
A02-3817-02
CABINET ASSY(BATTERY CASE)
K2,M2
2
1C
*
A02-3818-23
CABINET ASSY(4KEY)
E
3
1A
*
A02-3819-23
CABINET ASSY(16KEY)
K,K2,M
3
1A
*
A02-3819-23
CABINET ASSY(16KEY)
M2,E3
4
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 GLASS
8
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)
M2
11
1E,1G
*
B62-1696-00
INSTRUCTION MANUAL(ENGLISH)
11
1E,1G
*
B62-1697-00
INSTRUCTION MANUAL(SPANISH)
K,K2,E
11
1E
*
B62-1697-00
INSTRUCTION MANUAL(SPANISH)
E3
11
1E
*
B62-1699-00
INSTRUCTION MANUAL(GERMAN)
E,E3
11
1E
*
B62-1702-00
INSTRUCTION MANUAL(ITALIAN)
E,E3
11
1E
*
B62-1757-00
INSTRUCTION MANUAL(FRENCH)
E,E3
11
1E
*
B62-1758-00
INSTRUCTION MANUAL(DUTCH)
E,E3
12
3A
*
B72-2128-04
MODEL NAME PLATE(TH-K2AT)
K,K2,M
12
3A
*
B72-2128-04
MODEL NAME PLATE(TH-K2AT)
M2
12
3C
*
B72-2129-04
MODEL NAME PLATE(TH-K2E)
E
12
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,M
24
3E
*
H52-1961-02
ITEM CARTON CASE(TH-K2E)
E
24
3E
*
H52-1962-02
ITEM CARTON CASE(TH-K2ET)
E3
25
2H
*
H52-2009-02
ITEM CARTON CASE(TH-K2AT)
K2,M2
26
2F
*
H12-3146-01
PACKING FIXTURE
K,M,E
26
2F
*
H12-3146-01
PACKING FIXTURE
E3
27
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
ACCESSORY
31
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
E3
33
2B,2D
J82-0076-05
FPC(VOL/ENC)
45
3A,3C
J99-0376-04
ADHESIVE TAPE
34
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,M
36
1A
*
K29-9272-02
KEY TOP(16KEY)
M2,E3
37
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
SPEAKER
41
2F,3G
*
T90-1018-25
HELICAL ANTENNA
ACCESSORY
42
2F
*
W08-0959-15
CHARGER(230V/13.8V) ACCESSORY
M,E,E3
43
2E
*
W08-0960-15
CHARGER(120V/13.8V) ACCESSORY
K
44
2E
*
W09-0991-05
BATTERY ASSY(7.2V/1100MAH) ACCESSORY
K,M,E
44
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)
E3
D42-44
B30-2205-05
LED(YG)
K,K2,M
D42-44
B30-2205-05
LED(YG)
M2
D42,43
B30-2205-05
LED(YG)
E
D46
B30-2205-05
LED(YG)
E
D46,47
B30-2205-05
LED(YG)
E3
D46,47
B30-2205-05
LED(YG)
K,K2,M
D46,47
B30-2205-05
LED(YG)
M2
D48,49
B30-2237-05
LED(YG)
C1
CK73HB1C103K
CHIP C
0.010UF K
C2
CK73HB1H102K
CHIP C
1000PF
K
C3
CC73GCH1H030B
CHIP C
3.0PF
B
C4
CK73HB1H102K
CHIP C
1000PF
K
C5
CK73HB1A104K
CHIP C
0.10UF
K
C6
CK73HB1H102K
CHIP C
1000PF
K
C7
CC73HCH1H0R5B
CHIP C
0.5PF
B
C8,9
CC73GCH1H270G
CHIP C
27PF
G
C10
CK73HB1C103K
CHIP C
0.010UF K
C11
CK73HB1H102K
CHIP C
1000PF
K
C13
CC73GCH1H0R5B
CHIP C
0.5PF
B
C14
CK73HB1H102K
CHIP C
1000PF
K
C15
CC73HCH1H120J
CHIP C
12PF
J
C17,18
CK73HB1H102K
CHIP C
1000PF
K
C19
CC73HCH1H150J
CHIP C
15PF
J
C20
CC73HCH1H080D
CHIP C
8.0PF
D
C21
CK73HB1H102K
CHIP C
1000PF
K
C22
CC73HCH1H180J
CHIP C
18PF
J
C24-26
CK73HB1H102K
CHIP C
1000PF
K
C27
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/K2ET
PARTS LIST
18
TX-RX UNIT (X57-674X-XX)
Destination
Ref. No.
Parts No.
Description
Address
New
parts
Destination
Ref. No.
Parts No.
Description
Address
New
parts
E : TH-K2E
K : TH-K2AT
M : TH-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
C33
C92-0002-05
CHIP-TAN
0.22UF
35WV
C34
C92-0714-05
TANTALUM
4.7UF
6.3WV
C35
C92-0001-05
CHIP-C
0.1UF
35WV
C37
CK73HB1H102K
CHIP C
1000PF
K
C38
CK73HB1C103K
CHIP C
0.010UF K
C40
CK73HB1A104K
CHIP C
0.10UF
K
C41
C92-0507-05
CHIP-TAN
4.7UF
6.3WV
C42
CK73HB1H102K
CHIP C
1000PF
K
C43
CK73HB1C103K
CHIP C
0.010UF K
C44-46
CC73HCH1H101J
CHIP C
100PF
J
C50
CC73HCH1H220J
CHIP C
22PF
J
C51
CC73GCH1H220J
CHIP C
22PF
J
C52
CC73HCH1H100D
CHIP C
10PF
D
C54
CK73HB1H102K
CHIP C
1000PF
K
C55
CK73HB1C103K
CHIP C
0.010UF K
C56
CK73HB1H102K
CHIP C
1000PF
K
C57
CC73HCH1H100D
CHIP C
10PF
D
C61
CK73HB1H102K
CHIP C
1000PF
K
C64
CK73HB1H102K
CHIP C
1000PF
K
C65
CC73HCH1H180J
CHIP C
18PF
J
C66
CK73GB0J105K
CHIP C
1.0UF
K
C67
CK73HB1H102K
CHIP C
1000PF
K
C68
CC73HCH1H180J
CHIP C
18PF
J
C69
CC73HCH1H040C
CHIP C
4.0PF
C
C70
CK73GB0J105K
CHIP C
1.0UF
K
C71
CK73HB1H102K
CHIP C
1000PF
K
C72
CK73GB1C104K
CHIP C
0.10UF
K
C73
CK73HB1H102K
CHIP C
1000PF
K
C74
CC73HCH1H330J
CHIP C
33PF
J
C75
CK73HB1H102K
CHIP C
1000PF
K
C76
CC73GCH1H390J
CHIP C
39PF
J
C78
CK73HB1H102K
CHIP C
1000PF
K
C82
CK73HB1H102K
CHIP C
1000PF
K
C83
CK73HB1C103K
CHIP C
0.010UF K
C84
CK73HB1A104K
CHIP C
0.10UF
K
C85
∗
C93-0766-05
CERAMIC C
56PF
J
C88
CC73GCH1H560J
CHIP C
56PF
J
C89
CK73GB1H102K
CHIP C
1000PF
K
C90-92
CK73HB1H102K
CHIP C
1000PF
K
C93
CC73HCH1H080D
CHIP C
8.0PF
D
C94
CK73GB1H102K
CHIP C
1000PF
K
C95-97
CC73GCH1H120G
CHIP C
12PF
G
C98
CC73GCH1H080B
CHIP C
8.0PF
B
C99
CC73GCH1H130G
CHIP C
13PF
G
C100
CC73GCH1H070B
CHIP C
7.0PF
B
C101
CC73GCH1H240G
CHIP C
24PF
G
C105-107
CK73HB1H102K
CHIP C
1000PF
K
C108
CC73HCH1H101J
CHIP C
100PF
J
C109-115
CK73HB1H102K
CHIP C
1000PF
K
C116
C92-0544-05
CHIP-TAN
10UF
4WV
C117,118
CK73HB1H102K
CHIP C
1000PF
K
C124
CK73HF1C104Z
CERAMIC C
0.1UF
Z
C125
CC73HCH1H1R5C
CHIP C
1.5PF
C
C126
CC73HCH1H100D
CHIP C
10PF
D
C128
CK73HB1C103K
CHIP C
0.010UF K
C129
CC73HCH1H110J
CHIP C
11PF
J
C130
CK73HB1H102K
CHIP C
1000PF
K
C131-133
CK73HB1C103K
CHIP C
0.010UF K
C134
CK73HB1H102K
CHIP C
1000PF
K
C135
CC73HCH1H120J
CHIP C
12PF
J
C136
CC73HCH1H100D
CHIP C
10PF
D
C137
CC73HCH1H050C
CHIP C
5.0PF
C
C138
CK73HB1H102K
CHIP C
1000PF
K
C141,142
CK73HB1H102K
CHIP C
1000PF
K
C145
CC73HCH1H220G
CHIP C
22PF
G
C147
CK73HB1H102K
CHIP C
1000PF
K
C148
CC73HCH1H220G
CHIP C
22PF
G
C152,153
CK73HB1H102K
CHIP C
1000PF
K
C158
CC73HCH1H220G
CHIP C
22PF
G
C159
CC73HCH1H020B
CHIP C
2.0PF
B
C160
CC73HCH1H270G
CHIP C
27PF
G
C161
CK73HB1H102K
CHIP C
1000PF
K
C162
∗
CC73HCH1H470G
CHIP C
47PF
G
C163
CK73HB1H102K
CHIP C
1000PF
K
C166
CK73HB1C103K
CHIP C
0.010UF K
C167,168
CK73HB1A104K
CHIP C
0.10UF
K
C169,170
CK73HB1A683K
CHIP C
0.068UF K
C171
CK73HB1H102K
CHIP C
1000PF
K
C172
CK73HB1H182K
CHIP C
1800PF
K
C173,174
∗
CC73HCH1H181J
CHIP C
180PF
J
C175
CC73HCH1H220J
CHIP C
22PF
J
C176
CK73HB1A104K
CHIP C
0.10UF
K
C177
C92-0712-05
CHIP-TAN
22UF
6.3WV
C178
CK73HB1C103K
CHIP C
0.010UF K
C179
CK73HB1A104K
CHIP C
0.10UF
K
C180
CC73HCH1H121J
CHIP C
120PF
J
C182,183
CK73HB1A104K
CHIP C
0.10UF
K
C186
CC73HCH1H240J
CHIP C
24PF
J
C187
CC73HCH1H020C
CHIP C
2.0PF
C
C188
CC73HCH1H240J
CHIP C
24PF
J
C189
CK73HB1H102K
CHIP C
1000PF
K
C190-192
CK73HB1C103K
CHIP C
0.010UF K
C193
C92-0507-05
CHIP-TAN
4.7UF
6.3WV
C194
CK73HB1A104K
CHIP C
0.10UF
K
C195
C92-0628-05
CHIP-TAN
10UF
10WV
C196,197
CK73HB1C682K
CHIP C
6800PF
K
C198
CK73EF1C105Z
CHIP C
1.0UF
Z
C201
CK73HB1H122K
CHIP C
1200PF
K
C202
CK73HB1H271K
CHIP C
270PF
K
C203
CC73HCH1H121J
CHIP C
120PF
J
C204
CK73HB1A333K
CHIP C
0.033UF K
C205
CK73HB1A473K
CHIP C
0.047UF K
C206
CK73HB1C153K
CHIP C
0.015UF K
C207
CK73HB1C103K
CHIP C
0.010UF K
C208
CC73HCH1H820J
CHIP C
82PF
J
C209
CK73HB1H102K
CHIP C
1000PF
K
C210
CK73HB1C103K
CHIP C
0.010UF K
C211
CK73HB1H222K
CHIP C
2200PF
K
C212
CK73HB1C123K
CHIP C
0.012UF K
C213
C92-0507-05
CHIP-TAN
4.7UF
6.3WV
C218
CK73HB1H102K
CHIP C
1000PF
K
C219
CK73HB1A473K
CHIP C
0.047UF K
C220
CK73HB1E472K
CHIP C
4700PF
K
C221,222
CK73HB1C103K
CHIP C
0.010UF K
C223
CK73HB1H102K
CHIP C
1000PF
K
C224
CK73HB1A104K
CHIP C
0.10UF
K
C225
CK73GB0J105K
CHIP C
1.0UF
K
C226
CK73HB1A104K
CHIP C
0.10UF
K
C227
C92-0587-05
CHIP-TAN
2.2UF
4WV
C228,229
CK73HB1A104K
CHIP C
0.10UF
K
TH-K2AT/K2E/K2ET
PARTS LIST
19
TX-RX UNIT (X57-674X-XX)
Destination
Ref. No.
Parts No.
Description
Address
New
parts
Destination
Ref. No.
Parts No.
Description
Address
New
parts
E : TH-K2E
K : TH-K2AT
M : TH-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
C230
CK73FB1C105K
CHIP C
1.0UF
K
C231,232
CK73HB1H102K
CHIP C
1000PF
K
C235,236
CK73HB1C103K
CHIP C
0.010UF K
C237
C92-0628-05
CHIP-TAN
10UF
10WV
C238-241
CK73HB1H102K
CHIP C
1000PF
K
C242
CK73HB1C103K
CHIP C
0.010UF K
C243
CK73HB1H102K
CHIP C
1000PF
K
C246
C92-1327-05
CHIP-TAN
100UF
10WV
C247,248
CK73HB1A104K
CHIP C
0.10UF
K
C249
CK73HB1H102K
CHIP C
1000PF
K
C250
CK73EF1C105Z
CHIP C
1.0UF
Z
C252
CC73HCH1H101J
CHIP C
100PF
J
C253
C92-0628-05
CHIP-TAN
10UF
10WV
C255
C92-0628-05
CHIP-TAN
10UF
10WV
C256,257
CK73HB1H102K
CHIP C
1000PF
K
C258
CK73HB1A104K
CHIP C
0.10UF
K
C270,271
CK73HB1H102K
CHIP C
1000PF
K
C272
CK73HB1H471K
CHIP C
470PF
K
C276
CK73HB1H102K
CHIP C
1000PF
K
C279-285
CK73HB1H102K
CHIP C
1000PF
K
C286
CK73FB1C105K
CHIP C
1.0UF
K
C290,291
CK73HB1H102K
CHIP C
1000PF
K
C293
CC73HCH1H470J
CHIP C
47PF
J
C294,295
CC73HCH1H050C
CHIP C
5.0PF
C
C297
CK73HB1A104K
CHIP C
0.10UF
K
C298
CK73HB1H102K
CHIP C
1000PF
K
C299
CK73FB1C105K
CHIP C
1.0UF
K
C300
CK73HB1H102K
CHIP C
1000PF
K
C302
CK73HB1H102K
CHIP C
1000PF
K
C303
C92-0605-05
TANTALUM C 150UF
6.3WV
C304-306
CK73HB1H102K
CHIP C
1000PF
K
C307
CK73HB1A104K
CHIP C
0.10UF
K
C308
CK73HB1H102K
CHIP C
1000PF
K
C309
CK73FB1C105K
CHIP C
1.0UF
K
C310
CK73EF1C105Z
CHIP C
1.0UF
Z
C311
CK73GB1C104K
CHIP C
0.10UF
K
C312,313
CK73HB1A393K
CHIP C
0.039UF K
C314
CK73HB1H102K
CHIP C
1000PF
K
C316
CK73GB1C104K
CHIP C
0.10UF
K
C317,318
CK73HB1H102K
CHIP C
1000PF
K
C319
C92-0628-05
CHIP-TAN
10UF
10WV
C320,321
CK73HB1C822K
CHIP C
8200PF
K
K,K2
C323-326
CK73HB1H102K
CHIP C
1000PF
K
C327
CK73HB1A104K
CHIP C
0.10UF
K
C328
CK73GB0J105K
CHIP C
1.0UF
K
C329
CC73FCH1H560J
CHIP C
56PF
J
C330,331
CK73HB1H102K
CHIP C
1000PF
K
C332
CK73HB1A104K
CHIP C
0.10UF
K
C335,336
CK73HB1A104K
CHIP C
0.10UF
K
C338
CK73FB1C105K
CHIP C
1.0UF
K
C339
CK73HB1A473K
CHIP C
0.047UF K
C344-348
CK73HB1H102K
CHIP C
1000PF
K
C349
CK73HB1A104K
CHIP C
0.10UF
K
M,M2,E
C349
CK73HB1A104K
CHIP C
0.10UF
K
E3
C349,350
CK73HB1A104K
CHIP C
0.10UF
K
K,K2
C351
CK73HB1C103K
CHIP C
0.010UF K
C352-354
CK73HB1H102K
CHIP C
1000PF
K
C355,356
CK73HB1C103K
CHIP C
0.010UF K
C357
CK73EF1C105Z
CHIP C
1.0UF
Z
C358
CK73HB1A473K
CHIP C
0.047UF K
C359,360
CK73HB1A104K
CHIP C
0.10UF
K
C366
∗
CC73GCH1H101G
CHIP C
100PF
G
C500,501
CC73HCH1H1R5B
CHIP C
1.5PF
B
C502
CC73HCH1H030B
CHIP C
3.0PF
B
C503
∗
CC73GCH1H101G
CHIP C
100PF
G
C504
CC73HCH1H020B
CHIP C
2.0PF
B
C505
CK73HB1A473K
CHIP C
0.047UF K
C506
CK73HB1H102K
CHIP C
1000PF
K
C510
CC73HCH1H101J
CHIP C
100PF
J
E,E3
C511,512
CK73HB1H471K
CHIP C
470PF
K
E,E3
C514
CK73GB1H471K
CHIP C
470PF
K
E,E3
C515-517
CK73HB1H471K
CHIP C
470PF
K
E,E3
CN1
E40-5915-05
FLAT CABLE CONNECTOR
CN2
E40-5929-05
PIN ASSY
CN6
∗
E40-6327-05
PIN ASSY
CN7
E40-5630-05
PIN ASSY SOCKET
CN8
∗
E40-6308-05
PIN ASSY
CN9
∗
E40-6309-05
PIN ASSY SOCKET
CN15
E23-1081-05
TERMINAL
CN17
E23-1081-05
TERMINAL
E,E3
J2
E03-0190-05
DC JACK
J3
∗
E11-0484-05
3.5D PHONE JACK(3.5D)
J4
∗
E11-0483-05
2.5D PHONE JACK(2.5D)
CN10
∗
F01-1032-05
RADIATION PLATE
F1
∗
F53-0286-05
FUSE(2.5A/32V)
F3
∗
F53-0287-05
FUSE(0.5A/32V)
CD1
L79-1474-05
TUNING COIL
CF1
L72-0968-05
CERAMIC FILTER
L1
L40-1001-86
SMALL FIXED INDUCTOR(10UH)
L2
L41-4778-14
SMALL FIXED INDUCTOR
L3
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 INDUCTOR
L15
L41-6868-14
SMALL FIXED INDUCTOR
L16
L34-4577-05
AIR-CORE COIL
L17
L34-4606-05
AIR-CORE COIL
L18
∗
L41-2285-14
SMALL FIXED INDUCTOR
L19
L34-4569-05
AIR-CORE COIL
L20
L34-4567-05
AIR-CORE COIL
L21-23
L34-4569-05
AIR-CORE COIL
L26
∗
L41-4785-14
SMALL FIXED INDUCTOR
L27
∗
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 INDUCTOR
L35
L41-8278-14
SMALL FIXED INDUCTOR
L38
L41-8278-14
SMALL FIXED INDUCTOR
L40
L41-6878-14
SMALL FIXED INDUCTOR
L41
L41-1878-14
SMALL FIXED INDUCTOR
L45,46
∗
L41-5685-14
SMALL FIXED INDUCTOR
L49
L92-0131-05
FERRITE CHIP
L50
L92-0137-05
FERRITE CHIP
L53
L40-1575-71
SMALL FIXED INDUCTOR(15NH)
L54
∗
L40-5675-71
SMALL FIXED INDUCTOR(56NH)
TH-K2AT/K2E/K2ET
PARTS LIST
20
TX-RX UNIT (X57-674X-XX)
Destination
Ref. No.
Parts No.
Description
Address
New
parts
Destination
Ref. No.
Parts No.
Description
Address
New
parts
E : TH-K2E
K : TH-K2AT
M : TH-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
L55
L41-1078-14
SMALL FIXED INDUCTOR
L56
∗
L41-2278-14
SMALL FIXED INDUCTOR
L58
∗
L41-8285-14
SMALL FIXED INDUCTOR
L63
L92-0140-05
FERRITE CHIP
L64
L40-4795-85
SMALL FIXED INDUCTOR(4.7UH)
L66
∗
L40-1285-71
SMALL FIXED INDUCTOR(120NH)
L68
L92-0161-05
BEADS CORE
X1
∗
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 1/16W
CP2
RK75GB1J392J
CHIP-COM
3.9K
J 1/16W
CP31
RK75GB1J392J
CHIP-COM
3.9K
J 1/16W
CP32-35
RK75HA1J102J
CHIP-COM
1.0K
J 1/16W
R4
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R5
RK73HB1J104J
CHIP R
100K
J 1/16W
R6
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R7
RK73HB1J473J
CHIP R
47K
J 1/16W
R8
RK73HB1J104J
CHIP R
100K
J 1/16W
R9
RK73HB1J271J
CHIP R
270
J 1/16W
R10
RK73HB1J470J
CHIP R
47
J 1/16W
R11
RK73HB1J154J
CHIP R
150K
J 1/16W
R12
RK73HB1J470J
CHIP R
47
J 1/16W
R13
RK73HB1J682J
CHIP R
6.8K
J 1/16W
R14
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R15
RK73HB1J562J
CHIP R
5.6K
J 1/16W
R16
RK73HB1J471J
CHIP R
470
J 1/16W
R17
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R18
RK73HB1J100J
CHIP R
10
J 1/16W
R19
RK73HB1J124J
CHIP R
120K
J 1/16W
R20
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R21
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R22
RK73HB1J822J
CHIP R
8.2K
J 1/16W
R24
RK73HB1J471J
CHIP R
470
J 1/16W
R30
RK73HB1J122J
CHIP R
1.2K
J 1/16W
R31
RK73HB1J222J
CHIP R
2.2K
J 1/16W
R32
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R33
RK73HB1J220J
CHIP R
22
J 1/16W
R34
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R35
RK73HB1J124J
CHIP R
120K
J 1/16W
R36
RK73HB1J100J
CHIP R
10
J 1/16W
R37,38
RK73HB1J563J
CHIP R
56K
J 1/16W
R39
RK73HB1J271J
CHIP R
270
J 1/16W
R41
RK73HB1J271J
CHIP R
270
J 1/16W
R42
RK73HB1J101J
CHIP R
100
J 1/16W
R45
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R46
RK73HB1J103J
CHIP R
10K
J 1/16W
R47
RK73HB1J562J
CHIP R
5.6K
J 1/16W
R49
RK73HB1J331J
CHIP R
330
J 1/16W
R50
RK73HB1J330J
CHIP R
33
J 1/16W
R51
RK73HB1J471J
CHIP R
470
J 1/16W
R52
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R53,54
RK73HB1J101J
CHIP R
100
J 1/16W
R55
RK73HB1J471J
CHIP R
470
J 1/16W
R56
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R58
RK73HB1J100J
CHIP R
10
J 1/16W
R59
RK73HB1J123J
CHIP R
12K
J 1/16W
R60
RK73HB1J563J
CHIP R
56K
J 1/16W
R61,62
RK73HB1J221J
CHIP R
220
J 1/16W
R64
R92-1368-05
CHIP R
0 OHM
R70-72
RK73EB2ER39K
CHIP R
0.39
K 1/4W
R74,75
RK73HH1J104D
RESISTOR
100K
D 1/16W
R76-79
RK73HH1J154D
RESISTOR
150K
D 1/16W
R80
RK73HB1J103J
CHIP R
10K
J 1/16W
R81
RK73HB1J394J
CHIP R
390K
J 1/16W
R82
RK73HB1J273J
CHIP R
27K
J 1/16W
R83
RK73HB1J563J
CHIP R
56K
J 1/16W
R84
RK73HB1J104J
CHIP R
100K
J 1/16W
R85
RK73GB1J561J
CHIP R
560
J 1/16W
R86
RK73HB1J562J
CHIP R
5.6K
J 1/16W
R88
RK73HB1J331J
CHIP R
330
J 1/16W
R90
RK73HB1J331J
CHIP R
330
J 1/16W
R91
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R92
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R93
RK73HB1J470J
CHIP R
47
J 1/16W
R94
RK73HB1J331J
CHIP R
330
J 1/16W
R95
RK73HB1J104J
CHIP R
100K
J 1/16W
R96-98
RK73HB1J823J
CHIP R
82K
J 1/16W
R99,100
RK73HB1J105J
CHIP R
1.0M
J 1/16W
R101
RK73HB1J470J
CHIP R
47
J 1/16W
R102
R92-1368-05
CHIP R
0 OHM
R103
RK73HB1J272J
CHIP R
2.7K
J 1/16W
R104
RK73HB1J560J
CHIP R
56
J 1/16W
R110,111
RK73HB1J105J
CHIP R
1.0M
J 1/16W
R115
RK73HB1J562J
CHIP R
5.6K
J 1/16W
R116
RK73HB1J124J
CHIP R
120K
J 1/16W
R117
RK73HH1J272D
RESISTOR
2.7K
D 1/16W
R118
RK73HB1J273J
CHIP R
27K
J 1/16W
R119
RK73HB1J182J
CHIP R
1.8K
J 1/16W
R120
RK73HB1J272J
CHIP R
2.7K
J 1/16W
R122
RK73HB1J272J
CHIP R
2.7K
J 1/16W
R123
RK73HB1J182J
CHIP R
1.8K
J 1/16W
R124
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R125
RK73HB1J561J
CHIP R
560
J 1/16W
R126
RK73HB1J273J
CHIP R
27K
J 1/16W
R127
RK73HB1J470J
CHIP R
47
J 1/16W
R128
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R130
RK73HB1J101J
CHIP R
100
J 1/16W
R131
RK73HB1J334J
CHIP R
330K
J 1/16W
R132
RK73HB1J222J
CHIP R
2.2K
J 1/16W
R133
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R134
RK73HB1J394J
CHIP R
390K
J 1/16W
R135
RK73HB1J474J
CHIP R
470K
J 1/16W
R137
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R140
RK73HB1J184J
CHIP R
180K
J 1/16W
R141
RK73HB1J183J
CHIP R
18K
J 1/16W
R142
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R143
RK73HB1J471J
CHIP R
470
J 1/16W
R144
R92-1368-05
CHIP R
0 OHM
R145
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R146
RK73HB1J183J
CHIP R
18K
J 1/16W
R147
RK73HB1J471J
CHIP R
470
J 1/16W
R148
RK73HB1J154J
CHIP R
150K
J 1/16W
R149
RK73HB1J473J
CHIP R
47K
J 1/16W
R151
RK73HB1J681J
CHIP R
680
J 1/16W
R152
RK73HB1J154J
CHIP R
150K
J 1/16W
R153
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R155,156
RK73HB1J104J
CHIP R
100K
J 1/16W
R157,158
RK73HB1J334J
CHIP R
330K
J 1/16W
R159
RK73HB1J124J
CHIP R
120K
J 1/16W
TH-K2AT/K2E/K2ET
PARTS LIST
21
TX-RX UNIT (X57-674X-XX)
Destination
Ref. No.
Parts No.
Description
Address
New
parts
Destination
Ref. No.
Parts No.
Description
Address
New
parts
E : TH-K2E
K : TH-K2AT
M : TH-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
R160
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R161
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R162
RK73HB1J184J
CHIP R
180K
J 1/16W
R163
RK73HB1J564J
CHIP R
560K
J 1/16W
R164
RK73HH1J103D
CHIP R
10K
D 1/16W
R165,166
RK73HB1J824J
CHIP R
820K
J 1/16W
R167,168
RK73HB1J184J
CHIP R
180K
J 1/16W
R169
RK73GH1J104D
CHIP R
100K
D 1/16W
R170
RK73HH1J473D
RESISTOR
47K
D 1/16W
R171
∗
RK73HH1J563D
RESISTOR
56K
D 1/16W
R172
RK73HB1J103J
CHIP R
10K
J 1/16W
R173
RK73HB1J153J
CHIP R
15K
J 1/16W
R174
RK73HB1J564J
CHIP R
560K
J 1/16W
R175
RK73HB1J222J
CHIP R
2.2K
J 1/16W
R176
RK73HB1J824J
CHIP R
820K
J 1/16W
R177
RK73HB1J103J
CHIP R
10K
J 1/16W
R178
R92-1368-05
CHIP R
0 OHM
R179
RK73HB1J224J
CHIP R
220K
J 1/16W
R180
RK73HB1J393J
CHIP R
39K
J 1/16W
R181
RK73HB1J471J
CHIP R
470
J 1/16W
R182
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R183
RK73HB1J333J
CHIP R
33K
J 1/16W
R185
RK73HB1J274J
CHIP R
270K
J 1/16W
R186
RK73GB1J683J
CHIP R
68K
J 1/16W
R188
RK73HB1J470J
CHIP R
47
J 1/16W
R189
R92-1368-05
CHIP R
0 OHM
R190,191
RK73HB1J473J
CHIP R
47K
J 1/16W
R192
RK73HB1J471J
CHIP R
470
J 1/16W
R193
RK73HB1J182J
CHIP R
1.8K
J 1/16W
R194
RK73HB1J103J
CHIP R
10K
J 1/16W
R195
RK73HB1J101J
CHIP R
100
J 1/16W
R196
RK73HB1J103J
CHIP R
10K
J 1/16W
R197
RK73HB1J101J
CHIP R
100
J 1/16W
R198
RK73HB1J103J
CHIP R
10K
J 1/16W
R199
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R200
RK73HB1J103J
CHIP R
10K
J 1/16W
R201
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R202
RK73HB1J473J
CHIP R
47K
J 1/16W
R203
RK73HB1J474J
CHIP R
470K
J 1/16W
R204
RK73HB1J184J
CHIP R
180K
J 1/16W
R205
RK73HB1J101J
CHIP R
100
J 1/16W
R206
RK73HB1J150J
CHIP R
15
J 1/16W
R207
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R208
RK73HB1J100J
CHIP R
10
J 1/16W
R209
RK73HB1J104J
CHIP R
100K
J 1/16W
R210
RK73FB2A120J
CHIP R
12
J 1/10W
R211
RK73HB1J474J
CHIP R
470K
J 1/16W
R212
RK73HB1J103J
CHIP R
10K
J 1/16W
R213
RK73HB1J223J
CHIP R
22K
J 1/16W
R214
RK73HB1J103J
CHIP R
10K
J 1/16W
R215
RK73HB1J474J
CHIP R
470K
J 1/16W
R216
RK73HB1J103J
CHIP R
10K
J 1/16W
R217
RK73HB1J821J
CHIP R
820
J 1/16W
R218
R92-1368-05
CHIP R
0 OHM
R223
RK73HB1J224J
CHIP R
220K
J 1/16W
R224
RK73HB1J183J
CHIP R
18K
J 1/16W
R226
RK73HB1J221J
CHIP R
220
J 1/16W
R227
RK73HB1J101J
CHIP R
100
J 1/16W
R230
RK73HB1J221J
CHIP R
220
J 1/16W
K,K2,M
R230
RK73HB1J221J
CHIP R
220
J 1/16W
M2,E3
R231
RK73HB1J151J
CHIP R
150
J 1/16W
R235,236
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R237
RK73HB1J104J
CHIP R
100K
J 1/16W
R238,239
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R240
RK73HB1J104J
CHIP R
100K
J 1/16W
R241-243
RK73HB1J334J
CHIP R
330K
J 1/16W
R244
R92-1252-05
CHIP R
0 OHM
J 1/16W
R246
RK73HB1J392J
CHIP R
3.9K
J 1/16W
R248
RK73HB1J392J
CHIP R
3.9K
J 1/16W
R252
RK73HB1J104J
CHIP R
100K
J 1/16W
R253,254
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R255
R92-1368-05
CHIP R
0 OHM
R256
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R257
RK73HB1J563J
CHIP R
56K
J 1/16W
K,K2
R258
RK73HB1J681J
CHIP R
680
J 1/16W
K,K2
R258,259
R92-1368-05
CHIP R
0 OHM
M,M2,E
R258,259
R92-1368-05
CHIP R
0 OHM
E3
R259
RK73HB1J684J
CHIP R
680K
J 1/16W
K,K2
R260
RK73HB1J473J
CHIP R
47K
J 1/16W
M,M2,E
R260
RK73HB1J473J
CHIP R
47K
J 1/16W
E3
R260,261
RK73HB1J473J
CHIP R
47K
J 1/16W
K,K2
R263
RK73HB1J103J
CHIP R
10K
J 1/16W
R264
R92-1368-05
CHIP R
0 OHM
M,M2,E
R264
R92-1368-05
CHIP R
0 OHM
E3
R271
RK73HB1J120J
CHIP R
12
J 1/16W
R272
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R273
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R275-277
RK73HB1J473J
CHIP R
47K
J 1/16W
R282,283
R92-1368-05
CHIP R
0 OHM
R285,286
R92-1368-05
CHIP R
0 OHM
R290,291
R92-1368-05
CHIP R
0 OHM
R310
RK73HB1J392J
CHIP R
3.9K
J 1/16W
R312
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R313
RK73HB1J332J
CHIP R
3.3K
J 1/16W
R318
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R323
RK73HB1J472J
CHIP R
4.7K
J 1/16W
R324,325
RK73HB1J473J
CHIP R
47K
J 1/16W
R326
R92-1368-05
CHIP R
0 OHM
R328
RK73HB1J474J
CHIP R
470K
J 1/16W
R330
RK73HB1J471J
CHIP R
470
J 1/16W
R332
RK73FB2A150J
CHIP R
15
J 1/10W
R335
RK73HB1J102J
CHIP R
1.0K
J 1/16W
R336
RK73HB1J221J
CHIP R
220
J 1/16W
R337
RK73HB1J471J
CHIP R
470
J 1/16W
R341
R92-1368-05
CHIP R
0 OHM
R342,343
R92-1252-05
CHIP R
0 OHM
J 1/16W
R344
RK73HB1J104J
CHIP R
100K
J 1/16W
K,K2
R345
R92-1252-05
CHIP R
0 OHM
J 1/16W
R346
RK73HB1J680J
CHIP R
68
J 1/16W
R347
RK73HB1J101J
CHIP R
100
J 1/16W
R348
RK73HB1J221J
CHIP R
220
J 1/16W
R349
R92-1368-05
CHIP R
0 OHM
R351
RK73HB1J221J
CHIP R
220
J 1/16W
R353
RK73HB1J333J
CHIP R
33K
J 1/16W
R354
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/K2ET
PARTS LIST
22
TX-RX UNIT (X57-674X-XX)
Destination
Ref. No.
Parts No.
Description
Address
New
parts
Destination
Ref. No.
Parts No.
Description
Address
New
parts
E : TH-K2E
K : TH-K2AT
M : TH-K2AT
E3 : TH-K2ET
K2 : TH-K2AT
M2 : TH-K2AT
MIC1
T91-0580-05
MIC ELEMENT
D1,2
1SV325
VARIABLE CAPACITANCE DIODE
D5
HSC277
DIODE
D6
1SV305
VARIABLE CAPACITANCE DIODE
D7
MA2S111
DIODE
D8,9
HSC277
DIODE
D10
XB15A709
DIODE
D12,13
HVC131
DIODE
D14
MA2S111
DIODE
D15
MA8039
ZENER DIODE
D16
MA2S111
DIODE
D17
HSM88AS
DIODE
D18-21
1SV305
VARIABLE CAPACITANCE DIODE
D22
1SS361
DIODE
D24
MA742
DIODE
D25
MA2S111
DIODE
D26
1SS388
DIODE
D27
RB706F-40
DIODE
D30
RB521S-30
DIODE
D31
DA221
DIODE
D32,33
RB051L-40
DIODE
D34
∗
MAZS0270H
ZENER DIODE
D35,36
RB521S-30
DIODE
D60
MA2S111
DIODE
E
D62
MA2S111
DIODE
E,E3
D62-65
MA2S111
DIODE
K,K2
D63-65
MA2S111
DIODE
M,M2
D64,65
MA2S111
DIODE
E,E3
D69-73
MA2S111
DIODE
D74
DA221
DIODE
D79
DA221
DIODE
D80
RB521S-30
DIODE
IC1
LMX2316TMX
MOS IC
IC2
NJM2904V
MOS IC
IC3
TA31136FN
MOS IC
IC4
∗
XC6202PB52FR
MOS IC
IC5
NJM2107F
MOS IC
IC6
TA7368F
MOS IC
IC8
∗
90522BPFFG139
MPU
IC9
∗
TK11250CM
MOS IC
IC10
∗
S-80844CNNBB85
MOS IC
IC11
∗
S-80930CNNBG80
MOS IC
IC12
∗
TK11250CUCB
MOS IC
IC15
AT25160N10SI27
ROM IC
IC16
NJM2904V
MOS IC
IC17
NJM2902V
MOS IC
Q1
2SC5066(O)
TRANSISTOR
Q2
∗
2SC5488
TRANSISTOR
Q3
2SK1830
FET
Q4
2SC4617(R)
TRANSISTOR
Q5,6
∗
2SC5488
TRANSISTOR
Q9
∗
2SC5488
TRANSISTOR
Q10
2SC4926YD
TRANSISTOR
Q11
2SK2596
FET
Q12
2SK3476
FET
Q13
2SK1830
FET
Q14
∗
RN4902
TRANSISTOR
Q15
2SC4617(R)
TRANSISTOR
Q16
3SK318
FET
Q17
2SK1215(E)
FET
Q20
2SK1830
FET
Q21
2SC4617(R)
TRANSISTOR
Q22
∗
RN2105
TRANSISTOR
Q23
KTC4082
TRANSISTOR
Q24
∗
2SC5488
TRANSISTOR
Q27
2SK1830
FET
Q29
2SC4919
TRANSISTOR
Q30
2SC4617(R)
TRANSISTOR
Q31
2SK1830
FET
Q33
2SB1184(Q,R)
TRANSISTOR
Q34,35
2SK1830
FET
Q36
2SJ347
FET
Q37
2SB1184(Q,R)
TRANSISTOR
Q38
2SC4617(R)
TRANSISTOR
Q41
∗
RN2105
TRANSISTOR
Q47
RN1701
TRANSISTOR
Q50
2SK1830
FET
Q51
∗
RN4902
TRANSISTOR
Q52
∗
RN1107
TRANSISTOR
Q53
RN2701
TRANSISTOR
Q55
∗
CPH3317
FET
Q56
∗
CPH3417
FET
Q57
∗
RN2105
TRANSISTOR
Q58
2SK1830
FET
M,M2,E
Q58
2SK1830
FET
E3
Q58,59
2SK1830
FET
K,K2
TH1
∗
B57331V2103J
THERMISTOR
TH3,4
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
7
C
B
34
35
6
40
16
D
D
D
29
10
8
9
15
19
18
17
36
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
Dx2
D D E
Ex2
D
Dx2
D
23
33
39
28
14
22
Ax2
13
21
E
E
5
4
12
702. STANDARD LABEL : K, K2
701. STICKER
Fx2
1 (K2, M2)
Gx2
A : N09-1492-05
B : N14-0569-04
C : N14-0573-04
D : N79-2035-46
E : N79-2040-45
F : N82-2007-46
G : N09-2433-05
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
7
C
B
34
35
6
40
16
D
D
D
29
10
8
9
15
19
18
17
38
37
D
TX-RX Unit (B/3)
TX-RX Unit (C/3)
TX-RX Unit (A/3)
D D
D
23
33
39
28
14
22
13
21
E
E
5
4
12
A : N09-1492-05
B : N14-0569-04
C : N14-0573-04
D : N79-2035-46
E : N79-2040-45
F : N82-2007-46
G : N09-2433-05
31
Dx2
E
Ex2
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 the
transmission mode.
2. Press the [MONI] key to enter the single tone mode.
3. Press any key from [1] to [8] keys to transmit a single tone.
The single tone is consisting of eight frequencies.
[1]
697Hz
[2]
770Hz
[3]
852Hz
[4]
941Hz
[5]
1209Hz
[6]
1336Hz
[7]
1477Hz
[8]
1633Hz
4. When the [MONI] key is pressed again during the
transmission, the transceiver switches to the reception
mode, the single tone mode turns OFF.
■ 4key (E type)
1. Press the [PTT] key on the transceiver to switch to the
transmission mode.
2. Press the [MONI] key to enter the single tone mode.
3. When the [VFO] key is pressed during the transmission, a
DTMF “D” dual tone (combination of 1633 Hz and 941 Hz
frequencies) is transmitted.
4. When the [MR] key is pressed during the transmission,
single-tone 1633 Hz is transmitted.
5. When the [MONI] key is pressed again during the
transmission, the transceiver switch to the reception mode,
the single tone mode is turned OFF.
• The single tone mode can be enabled only during the
transmission.
• When DTMF memory is transmitted in the single tone
mode, the single tone mode turns OFF.
Adjustment Mode
This mode is used to replace or readjust the IC15 (EEPROM).
Adjust the following adjustment items after setting the
transceiver to “Adjustment Mode”.
■ Adjustment Items
A. Overvoltage warning reference voltage (14.8V [DC IN])
B. Battery terminal reference voltage (7.5 V [Battery terminal])
C. Squelch (SQL1, SQL2)
D. S-meter (Two segments in S-meter light, all segments in 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 balance
M.Tone deviation (Lower limit frequency, center frequency,
upper limit frequency)
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
O. VOX sensitivity (Level 1, level 9)
■ Operation in Adjustment Mode
1. Turn the transceiver ON.
2. Set the tone frequency to 151.4 Hz and the DCS code to
023 in Menu Mode to adjust tone and DCS modulation.
3. Set Adjustment Mode by shorting two lands (SET) on the
component side of the TX-RX unit (A/3).
4. When the Adjustment Mode is set, the “Overvoltage
warning reference voltage (14.8V [DC IN])” adjustment item
is displayed. (The “
” icon on the upper side of the LCD
blinks while the transceiver is in the Adjustment Mode.)
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
5. The functions of transceiver keys in Adjustment Mode are
as follows:
Short these two lands
SET
Adjustment item
Blink
The value stored in the
EEPROM. (00-FE)
Current adjustment
value (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 bosses
of rubber keys align with the LAMP and MONI contacts of
the PTT PCB (C/3).
• In the Adjustment Mode, Transmission and Reception
frequencies becomes extensive.
A. Overvoltage warning reference voltage (14.8V [DC IN])
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DC” on the LCD.
The current voltage value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [MENU] key to write the current voltage value
into the EEPROM.
B. Battery terminal reference voltage (7.5 V [Battery
terminal])
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“BAT” on the LCD.
Press the [F] key and then the [PTT] key repeatedly to turn
the “
” icon ON. The current voltage value is displayed at
the lower digits of the frequency display, and the value
stored in the EEPROM is displayed on the memory channel
number display.
(2) Press the [PTT] key to enable the transmit mode.
(3) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(4) Press the [MENU] key to write the current voltage value
into the EEPROM.
C. Squelch (SQL1, SQL2)
1Squelch (SQL1)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ1” on the LCD.
The detected DC voltage value to the current noise level is
displayed at the lower digits of the frequency display, and
the value stored in the EEPROM is displayed on the memory
channel number display.
(2) Press the [MENU] key to write the current noise level value
into the EEPROM.
2Squelch (SQL2)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“SQ2” on the LCD.
(2) Press the [MENU] key to write the current noise level value
into the EEPROM.
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 ON
VFO mode
When this key is pressed on the adjustment display, it switches to the frequency display.
Memory mode
When this key is pressed on the adjustment display, it switches to the frequency display.
Switch between frequency display and adjustment display.
Each time this key is pressed, the LCD switches between the frequency display and
adjustment display.
Increase or decrease adjustment values (00 - FE). (adjustment display)
Increase or decrease frequency and memory channel number. (frequency display)
[F] key → [key]
Selecting a TX power (High/Mid/Low)
Lamp always ON
Squelch level setting mode
-
Function mode/MHz mode OFF
M→V (Memory shift)
M.IN (Memory registration)
-
Increase or decrease frequency (1MHz
step). (frequency display)
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 digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2)Press the [MENU] key to write the current RSSI level value
into the EEPROM.
2S-meter (All segments in S-meter light)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“S9” on the LCD.
(2)Press the [MENU] key to write the current RSSI level value
into the EEPROM.
E. RX BPF (Lower limit frequency, center frequency, upper
limit frequency)
1RX BPF (Lower limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“BPL” on the LCD.
The current BPF tuning value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
(4)Press the [CALL] key to switch to the adjustment display.
(5)Turn the encoder to change the current BPF tuning value
and adjust RX BPF.
(6)Press the [MENU] key to write the current BPF tuning value
into the EEPROM.
2RX BPF (Center frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“BPC” on the LCD.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the center frequency on the
LCD.
(4)Repeat steps (4) to (6) of “1RX BPF (Lower limit
frequency)” described on page 29.
3RX BPF (Upper limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“BPH” on the LCD.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the upper frequency on the
LCD.
(4)Repeat steps (4) to (6) of “1RX BPF (Lower limit
frequency)” described on page 29.
F. 7.5V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX H power (Lower limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “
” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
(4)Press the [CALL] key to switch to the adjustment display.
(5)Press the [PTT] key to enable the transmit mode.
(6)Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7)Turn the encoder to change the current APC value and adjust
the transmission power.
ADJUSTMENT
TH-K2AT/K2E/K2ET
30
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX H power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limit
frequency)” described on page 29.
37.5V TX H power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX H power (Lower limit
frequency)” described on page 29.
G. 7.5V TX M power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX M power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “
” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7) Turn the encoder to change the current APC value and adjust
the transmission power.
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX M power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limit
frequency)” described on page 30.
37.5VTX M power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display upper limit frequency on the
LCD.
(4) Repeat steps (4) to (8) of ”17.5V TX M power (Lower limit
frequency)” described on page 30.
H. 7.5V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
17.5V TX L power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7L” on the LCD.
In this case, the “
” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
ADJUSTMENT
TH-K2AT/K2E/K2ET
31
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
(4)Press the [CALL] key to switch to the adjustment display.
(5)Press the [PTT] key to enable the transmit mode.
(6)Adjust the output voltage from DC power supply until the
voltage at the battery terminal becomes 7.5V while the
transceiver is transmitting.
(7)Turn the encoder to change the current APC value and adjust
the transmission power.
(8) Press the [MENU] key to write the current APC value into
the EEPROM.
27.5V TX L power (Center frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“P7C” on the LCD.
In this case, the “
” icon appears.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the center frequency on the
LCD.
(4)Repeat steps (4) to (8) of ”17.5V TX L power (Lower limit
frequency)” described on page 30.
37.5V TX L power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P7H” on the LCD.
In this case, the “
” icon appears.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the upper limit frequency on
the LCD.
(4)Repeat steps (4) to (8) of ”17.5V TX L power (Lower limit
frequency)” described on page 30.
I. 13.8V TX H power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX H power (Lower limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.
In this case, the “
” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
(4)Press the [CALL] key to switch to the adjustment display.
(5)Press the [PTT] key to enable the transmit mode.
(6)Turn the encoder to change the current APC value and adjust
the transmission power.
(7)Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX H power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “
” icon appears.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display center frequency on the LCD.
(4)Repeat steps (4) to (7) of ”113.8V TX H power (Lower
limit frequency)” described on page 31.
313.8V TX H power (Upper limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “
” icon appears.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display upper limit frequency on the
LCD.
(4)Repeat steps (4) to (7) of ”113.8V TX H power (Lower
limit frequency)” described on page 31.
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 of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable the transmit mode.
(6) Turn the encoder to change the current APC value and adjust
the transmission power.
(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX M power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower
limit frequency)” described on page 31.
313.8V TX M power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of “113.8V TX M power (Lower
limit frequency)” described on page 32.
K. 13.8V TX L power (Lower limit frequency, center
frequency, upper limit frequency)
113.8V TX L power (Lower limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13L” on the LCD.
In this case, the “
” icon appears.
The current APC value is displayed at the lower digits of
the frequency display, and the value stored in the EEPROM
is displayed on the memory channel number display.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the lower limit frequency on
the LCD.
(4) Press the [CALL] key to switch to the adjustment display.
(5) Press the [PTT] key to enable transmit mode.
(6) Turn the encoder to change the current APC value and adjust
transmission power.
(7) Press the [MENU] key to write the current APC value into
the EEPROM.
213.8V TX L power (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13C” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of ”113.8V TX L power (Lower limit
frequency)” described on page 32.
313.8V TX L power (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“P13H” on the LCD.
In this case, the “
” icon appears.
ADJUSTMENT
TH-K2AT/K2E/K2ET
33
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the upper limit frequency on
the LCD.
(4)Repeat steps (4) to (7) of ”113.8V TX L power (Lower limit
frequency)” described on page 32.
L. DCS modulation balance
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“DCS.BAL” on the LCD. Press the [F] key and then the
[PTT] key repeatedly to turns the “
” icon ON.
(2)When the [PTT] key is pressed to enable transmit mode, a
100Hz square waveform is internally generated and
modulated.
(3)While observing the waveforms on the oscilloscope, turn
the semi-fixed volume (VR6) to adjust the DCS modulation
waveform to a square waveform.
(4)When the DCS modulation waveform becomes a square
waveform, release the [PTT] key.
M.Tone deviation (Lower limit frequency, center
frequency, upper limit frequency)
1Tone deviation (Lower limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
(4)Press the [CALL] key to switch to the adjustment display.
(5)When the [PTT] key is pressed to enable transmit mode, a
preset tone frequency (151.4Hz) is internally generated and
modulated.
(6)Turn the encoder to change the current adjustment value
and adjust tone deviation.
(7)Press the [MENU] key to write the current adjustment value
into the EEPROM.
2Tone deviation (Center frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the center frequency on the
LCD.
(4)Repeat steps (4) to (7) of ”1Tone deviation (Lower limit
frequency)” described on page 33.
3Tone deviation (Upper limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of ”1Tone deviation (Lower limit
frequency)” described on page 33.
N. DCS deviation (Lower limit frequency, center frequency,
upper limit frequency)
1DCS deviation (Lower limit frequency)
(1)Press the [LAMP] or [MONI] key on the transceiver to display
“DVL” on the LCD.
In this case, the “
” icon appears. Press the [F] key and
then the [PTT] key repeatedly to turn the “
” icon ON.
The current adjustment value is displayed at the lower digits
of the frequency display, and the value stored in the
EEPROM is displayed on the memory channel number
display.
(2)Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3)Turn the encoder to display the lower limit frequency on
the LCD.
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 and
modulated.
(6) Turn the encoder to change the current adjustment value
and adjust DCS deviation.
(7) Press the [MENU] key to write the current adjustment value
into the EEPROM.
2DCS deviation (Center frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVC” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the center frequency on the
LCD.
(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limit
frequency)” described on page 33.
3DCS deviation (Upper limit frequency)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“DVH” on the LCD.
In this case, the “
” icon appears.
(2) Press the [VFO], [MR] or [CALL] key to switch to the
frequency display.
(3) Turn the encoder to display the upper limit frequency on
the LCD.
(4) Repeat steps (4) to (7) of ”1DCS deviation (Lower limit
frequency)” described on page 33.
O. VOX sensitivity (Level 1, level 9)
1VOX sensitivity (Level 1)
(1) Press the [LAMP] or [MONI] key on the transceiver to display
“VOX1” on the LCD.
Press the [F] key and then the [PTT] key repeatedly to turn
the “
” icon ON.
The current microphone input level value is displayed at
the lower digits of the frequency display, and the value
stored in the EEPROM is displayed on the memory channel
number display.
(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 after
resetting
DC cable to the power supply.
the full-reset.
DC IN terminal voltage: 13.8V
1) Total illumination display
confirmation
Turn the Transceiver Power ON by pressing the power switch while the [F] key is pressed.
While the [F] key is pressed, all LCD segments light.
2) Full-resetting
After confirming that all LCD segments have lighted described in the Step 1 above, release
the [F] key, and then press the [F] key twice while “FL.RST?” appears on the display.
2 VCO
After removing 3 screws fixing
Lock voltage the TX-RX unit (B/3), remove
Check
the TX-RX (B/3) unit from the
CN9 connector of the TX-RX
unit (A/3).
1) Frequency: 136.000MHz
DVM
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 more
PTT: ON
2) Frequency: 173.990MHz
4.3V or less
PTT: ON
After observing the VCO
lock voltage, connect the
TX-RX unit (B/3) to the
original position.
3.TX frequency 1) TX power: Low
f. counter
ANT
TX-RX
VR1
145.990MHz
±150Hz
Adjust
Frequency: 145.990MHz
(A/3)
PTT: ON
4.Overvoltage
Switch to Adjustment mode
warning
and carry out the operations
reference
for adjustment item A.
voltage
(Refer to page 28)
Adjust/Check 1) LCD display: DC
DC power supply
[MENU]
Write
Frequency: 145.050MHz
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
DC IN terminal voltage: 14.8V
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
2) Frequency: 145.050MHz
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
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
TH-K2AT/K2E/K2ET
36
ADJUSTMENT
Receiver section
Item
Condition
Measurement
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 AF
Frequency: 146.050MHz
Distortion meter
output.
(K, K2, M, M2) AF V.M
SSG output: –53dBm (501 uV) Dummy load
SSG MOD: 1kHz
SSG DEV: 3kHz
Switch to Adjustment mode
and carry out the operations
for adjustment item E.
(Refer to page 29)
2) LCD display: BPL
Encoder
Write
Max Sensitivity
Frequency: 136.050MHz
[MENU]
SSG: –119dBm (0.25 uV)
3) SSG: –113dBm (0.501 uV)
Check
12dB SINAD or
more
4) LCD display: BPC
Encoder
Write
Max Sensitivity
Frequency: 146.050MHz
[MENU]
SSG: –119dBm (0.25 uV)
5) SSG: –120dBm (0.22 uV)
Check
12dB SINAD or
more
6) LCD display: BPH
Encoder
Write
Max Sensitivity
Frequency: 160.050MHz
[MENU]
SSG: –119dBm (0.25 uV)
7) SSG: –113dBm (0.501uV)
Check
12dB SINAD or
more
2.IF response 1) Frequency : 144.050MHz
SSG
Check
12dB SINAD or
Check
SSG Frequency: 221.750MHz Oscilloscope
less
SSG output: –60dBm (224uV)
Distortion meter
Note: If the
SSG MOD: 1kHz
specification is not
SSG DEV: 3kHz
satisfied, repeat the
AF output: 0.63V/8Ω
operations for
“1. RX BPF
Adjust”.
3.Squelch /
Switch to Adjustment mode
SSG
ANT
S-meter
and carry out the operations
Write
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 be
2) 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
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
Switch to Adjustment mode
and carry out the operations
for adjustment item D.
(Refer to page 29)
S-meter 3) LCD display: S1
SSG
TX-RX
ANT
[MENU]
Write
Frequency: 145.050MHz
(A/3)
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
SSG: –120dBm (0.22uV)
4) LCD display: S9
[MENU]
Write
Frequency: 145.050MHz
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
SSG: –105dBm (1.26uV)
4.Squelch
Squelch level: 1
Check
1) Frequency: 145.050MHz
SSG
Check
Open Squelch
(E, E3)
Oscilloscope
Frequency: 146.050MHz
Distortion meter
(K, K2, M, M2)
SSG output: –123dBm (0.158uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
2) SSG: OFF
Close Squelch
5.S-meter
1) Frequency: 145.050MHz
SSG
Check
Two segments
Check
(E, E3)
in S-meter
Frequency: 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
ANT
noise ratio
(E, E3)
Oscilloscope
(A/3)
SP
Check
Frequency: 146.050MHz
Distortion meter
(K, K2, M, M2) AF V.M
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF Output: 0.63V/8Ω
AF V.M = 0dB
2) SSG DEV: OFF
Check
–38dB or less
7.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: 1kHz
SSG DEV: 3kHz
AF Output: 0.63V/8Ω
TH-K2AT/K2E/K2ET
38
ADJUSTMENT
Item
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
8.AF output
1) Frequency: 145.050MHz
SSG
TX-RX
ANT
Check
400mW or more
Check
(E, E3)
Oscilloscope
(A/3)
SP
Frequency: 146.050MHz
Distortion meter
(K, K2, M, M2) AF V.M
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
AF distortion: 10%
9.Current
Squelch level: 5
Drain
1) Frequency: 145.050MHz
SSG
Check
80mA or less
Check
(E, E3)
Am meter
Frequency: 146.050MHz
(K, K2, M, M2)
SSG output: OFF
2) Frequency: 145.050MHz
400mA or less
(E, E3)
Frequency: 146.050MHz
(K, K2, M, M2)
SSG output: –53dBm (501uV)
SSG MOD: 1kHz
SSG DEV: 3kHz
VOL knob: Max
Transmitter section
Item
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
1.TX power
Write (Battery
terminal: 7.5V)
High power
Mid power
Battery terminal voltage:
7.5V
Switch to Adjustment mode
and carry out the operations
for adjustment item F.
(Refer to page 29)
1)LCD display: P7L,
Frequency: 144.000MHz
PTT: ON
2)LCD display: P7C,
Frequency: 145.000MHz
PTT: ON
3) LCD display: P7H,
Frequency: 145.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item G.
(Refer to page 30)
4)LCD display: P7L,
Frequency: 144.000MHz
PTT: ON
5) LCD display: P7C,
Frequency: 145.000MHz
PTT: ON
DC power supply
DVM
Power meter
Am meter
TX-RX
(A/3)
B
GND
ANT
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Write
Write
Write
Write
Write
Note: Do not
use the DC IN
terminal.
4.8W ±0.05W
2.0A or less
1.5W ±0.05W
1.4A 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
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
Mid power
Low power
2.TX power
Write (DC IN
terminal: 13.8V)
High power
Mid power
Low power
6) LCD display: P7H,
Frequency: 145.995MHz
PTT: ON
Switch to Adjustment mode
and carryout the operations
for adjustment item H.
(Refer to page 30)
7)LCD display: P7L,
Frequency: 144.000MHz
PTT: ON
8)LCD display: P7C,
Frequency: 145.000MHz
PTT: ON
9)LCD display: P7H,
Frequency: 145.995MHz
PTT: ON
Connect the optional PG-2W
DC cable to the power supply.
DC IN terminal voltage: 13.8V
Switch to Adjustment mode
and carry out the operations
for adjustment item I.
(Refer to page 31)
1)LCD display: P13L,
Frequency: 144.000MHz
PTT: ON
2)LCD display: P13C,
Frequency: 145.000MHz
PTT: ON
3)LCD display: P13H,
Frequency: 145.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item J.
(Refer to page 31)
4)LCD display: P13L,
Frequency: 144.000MHz
PTT: ON
5)LCD display: P13C,
Frequency: 145.000MHz
PTT: ON
6)LCD display: P13H,
Frequency: 145.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item K.
(Refer to page 32)
7) LCD display: P13L,
Frequency: 144.000MHz
PTT: ON
Power meter
Am meter
DC power supply
DVM
Power meter
Am 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 ±0.05W
0.8A or less
5.0W - 5.1W
2.0A or less
1.5W ±0.05W
1.4A or less
0.5W ±0.05W
0.8A or less
TH-K2AT/K2E/K2ET
40
ANT
ANT
ANT
MIC
Encoder
[MENU]
Encoder
[MENU]
[MENU]
LCD
LCD
VR6
VR5
Write
Write
Write
Check
Check
By tuning the
VR6, adjust
the modulation
wave until
if becomes the
square wave.
4.2kHz
According to the
larger +, –.
0.5W ±0.05W
0.8A or less
All segments
are lighted.
■■■■■■■■■
4 to 6 seg-
ments are
lighted.
■■■■ ~
■■■■■■
±0.1kHz
Item
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
Low power
3.Battery
terminal
reference
voltage
Adjust/
Check
4.DCS
modulation
balance
5.MAX DEV
8) LCD display: P13C,
Frequency: 145.000MHz
PTT: ON
9) LCD display: P13H,
Frequency: 145.995MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item B.
(Refer to page 28)
TX power: Low
1)LCD display: BAT
Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
PTT: ON
Battery terminal voltage: 7.5V
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
2)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
PTT: ON
Battery terminal voltage: 6.4V
Switch to Adjustment mode
and carry out the operations
for adjustment item L.
(Refer to page 32)
Detector: +P, –P
HPF: OFF LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DCS.BAL
Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
PTT: ON
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
MIC terminal input
AG: 1kHz/80mV
Detector: +P, –P
HPF: OFF LPF: 15kHz
De-emphasis: OFF
TX power: Low
Power meter
Am meter
DC power supply
DVM
Linear detector
Oscilloscope
Linear detector
AG
Oscilloscope
TX-RX
(A/3)
TX-RX
(A/3)
ADJUSTMENT
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 7.5V while the transceiver is transmitting.)
(Adjust the output voltage from DC power supply until the voltage at the
battery terminal becomes 6.4V while the transceiver is transmitting.)
TH-K2AT/K2E/K2ET
41
Item
Condition
Measurement
Adjustment
Specifications/
Test equipment
Unit
Terminal
Unit
Parts
Method
Remarks
6.MIC
sensitivity
Check
7.Tone
deviation
8.DCS
deviation
1)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
PTT: O N
MIC terminal input
AG: 1kHz
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item M.
(Refer to page 33)
Detector: P-P/2
HPF: OFF
LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DVL,
Frequency: 144.000MHz
PTT: ON
2)LCD display: DVC,
Frequency: 145.000MHz
PTT: ON
3)LCD display: DVH,
Frequency: 145.990MHz
PTT: ON
Switch to Adjustment mode
and carry out the operations
for adjustment item N.
(Refer to page 33)
Detector: +P HOLD
HPF: OFF
LPF: 3kHz
De-emphasis: OFF
TX power: Low
1)LCD display: DVL,
Frequency: 144.000MHz
PTT: ON
2)LCD display: DVC,
Frequency: 145.000MHz
PTT: ON
3)LCD display: DVH,
Frequency: 145.990MHz
PTT: ON
Linear detector
AG
Oscilloscope
Linear detector
TX-RX
(A/3)
ANT
MIC
ANT
VR5
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
Encoder
[MENU]
4.2kHz
According to the
larger +, –.
Change the AG
output level to
obtain 3kHz
deviation.
Write
Write
Write
Write
Write
Write
±0.1kHz
4mV - 12mV
0.8kHz ±50Hz
0.8kHz ±50Hz
ADJUSTMENT
TH-K2AT/K2E/K2ET
42
9.VOX
Sensitivity
Write
10. VOX
Operation
Check
11. DTMF
DEV
Check
12. 1750Hz
Tone DEV
Check
(E, E3 types
only)
13. Protection
Check
(DC IN
terminal: 13.8V)
Switch to Adjustment mode
and carry out the operations
for adjustment item O.
(Refer to page 34)
TX power: Low
1)LCD display: VOX1
Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
AG: 1kHz/80mV
2)LCD display: VOX9
Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
AG: 1kHz/1.5mV
To exit from the Adjustment
Mode, turn the transceiver
power OFF and then ON.
1)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
VOX Gain: 4
AG: OFF
2)AG: 1kHz/100mV
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
Send DTMF code “D”
Detector: P-P/2
HPF: OFF
LPF: 15kHz
De-emphasis: OFF
TX power: Low
1)Frequency: 145.000MHz
(E, E3)
Send 1750Hz Tone
TX power: High
1)Frequency: 145.000MHz
(E, E3)
Frequency: 146.000MHz
(K, K2, M, M2)
ANT: OPEN
PTT: ON
AG
Linear detector
Am meter
Write
Write
Check
Check
Check
Check
Does not
transmit.
Transmits.
2.0kHz - 4.2kHz
2.5kHz - 4.5kHz
2.4A or less
Item
Condition
Measurement
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
J2
DC IN
J3
MIC
J4
SP
VR1
VR5
VR6
LV
B
LCD
ANT
BTEMP
GND
SET
TX-RX UNIT (A/3)
Component side view
CN1
1
GND
GND
2
Vol-OUT
RX audio volume output
3
Vol-IN
RX audio volume input
4
EN2
Encoder 2
5
GND
GND
6
EN1
Encoder 1
CN2
1
SPK
Internal speaker audio
2
SPG
Audio ground
CN6,
1
PTT
PTT
CN7
2
KIN4
Key matrix input
3
KYO2
Key matrix output (MONI key)
4
KYO1
Key matrix output (LAMP key)
5
BL
LCD backlight control
6
GND
GND
CN8,
1
KIN1
Key matrix input
CN9
2
IM
Internal microphone
3
KYO3
Key matrix output
4
8M
8V power supply
5
KIN4
Key matrix input
6
MIG
Microphone ground
7
LAMP
Key illumination control
8
GND
GND
9
KYO0
Key matrix output
10
KIN2
Key matrix input
11
KYO1
Key matrix output
12
KIN0
Key matrix input
13
KYO2
Key matrix output
14
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 frequency
VR5 : MAX DEV
VR6 : DCS modulation valance
LV
: VCO lock voltage terminal
J
I
H
G
F
E
D
C
B
A
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
C52
C203
C54
C204
C55
C56
C57
C211
C212
C213
R252
Q12
C66
Q13
Q14
R255
Q15
R257
R258
R259
C70
R260
Q20
R261
Q21
Q22
Q23
C78
Q24
R264
Q27
C85
R272
Q34
Q35
Q36
C1
Q51
Q59
D7
C271
C272
F1
F3
XF1
TH1
TH3
D14
D15
D16
R115
R116
R117
R118
R119
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
VR5
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
CP1
CP2
IC17
1
7
8
14
LV
B
BTEMP
GND
1
8
9
16
D
G
G
S
S
D
+
1
3
4
6
D
S
G
1
8
9
16
1
13 KYO2
KYO1
KYO0
LAMP
KIN4
KYO3
KIN1
KIN3
KIN0
KIN2
GND
MIG
8M
IM
14
2
+
DCS BAL
1
4
5
8
D
S
G
D
S
G
J2
DC IN
FREQ
+
D
S
G
MAX DEV
SET
1
3
4
6
1
5
2
6 GND
KYO1
KIN4
BL
KYO2
PTT
CN6
G
D
S
S
+
G
S
D
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
C291
TH1
D25
D26
D34
CP34
CP35
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
IC10
R204
IC11
R205
R206
R207
R208
R209
IC17
1
14
1
5
2
6 GND
KYO1
KIN4
BL
KYO2
PTT
CN6
D
S
S
+
G
S
D
J3
MIC
Q37
B
E
C
G
S
D
Q56
G
S
D
+
+
POWER
1
5
6
10
CN2
INT. SP
+
J4
SP
1
3
4
6
1
2
3
4
G
S
D
1
2
3
4
+
1
4
5
8
IC15
1
3
4
5
1
3
4
5
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
SEG31
36
COM0
1
COM1
COM2
LCD
ANT
45
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 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
J
I
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R235
R239
C297
R240
R241
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
TH4
CN10
R102
S
D
G
R103
R104
CN15
CN17
D10
D12
D13
D17
R110
R111
D20
D21
D22
R310
D24
R312
R313
D27
R318
CP31
D36
CP32 CP33
R325
R326
C100
C101
L16
L17
L18
L19
L20
L21
L22
L23
C303
R342
R343
IC4
R345
C502
C503
C504
C505
C314
C316
R353
L38
R
R162
R
C511
C512
L40
L41
C517
D74
D79
R17
C330
R179
C332
C335
C336
R180
R181
R182
R183
R186
R185
C152
C153
R190
R191
R192
R193
R194
C158
C159
R195
R196
R197
R198
R199
C160
C162
C163
C357
C358
R61
C366
R62
CN1
X3
R200
R201
IC12
1
4
3
6
1
6 ENCA
GND
ENCB
VOL IN
VOL OUT
GND
+
1
2
3
4
IC8
30
31
1
120
90
91
60
61
+
1
5
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
C7
C8
C9
D1
D2
Q58
D5
D6
D8
D9
C270
C276
C282
R100
CN10
R101
R102
S
D
G
R103
R104
D18
D19
D27
L1
L2
L3
L5
L6
L8
D30
L9
D32
D33
D35
R130
L10
CD1
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
C134
C329
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
R4
R5
R39
R6
R7
R8
R9
R41
L66
C152
R42
C153
R45
R46
R47
R49
C352
C353
R50
R51
R52
R53
R54
C358
R55
R56
R59
R60
C366
R62
R64
C177
C178
C179
R88
R91
R92
R93
R94
R95
R96
R97
R98
R99
C10
C11
C13
C14
C15
C17
C18
C19
1
3
4
5
IC16
1
4
5
8
D
S
G
1
2
3
4
1
2
3
4
G
S
D
E
B
C
+
D
S
G
LV
B
R169
47
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
PC BOARD TH-K2AT/K2E/K2ET
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
J
K
L
M
N
O
P
Q
R
S
I
H
G
F
E
D
C
B
A
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
C52
C203
C54
C204
C55
R242
C56
R243
C57
R246
R248
C211
C212
C213
R252
Q12
C66
Q13
Q14
R255
Q15
R257
R258
R259
C70
R260
Q20
R261
Q21
Q22
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
F1
F3
C280
C290
C291
XF1
TH1
TH3
D14
D15
D16
R115
R116
R117
R118
R119
D25
D26
R120
R122
R123
R124
R125
R126
R127
R128
D31
D34
R323
CP34
R324
CP35
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
VR5
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
CP1
CP2
R202
R203
IC10
R204
IC11
R205
R206
R207
R208
R209
IC17
1
7
8
14
LV
B
BTEMP
GND
1
8
9
16
D
G
G
S
S
D
+
1
3
4
6
D
S
G
1
8
9
16
1
13 KYO2
KYO1
KYO0
LAMP
KIN4
KYO3
KIN1
KIN3
KIN0
KIN2
GND
MIG
8M
IM
14
2
+
DCS BAL
1
4
5
8
D
S
G
D
S
G
J2
DC IN
FREQ
+
D
S
G
MAX DEV
SET
1
3
4
6
1
5
2
6 GND
KYO1
KIN4
BL
KYO2
PTT
CN6
G
D
S
S
+
G
S
D
J3
MIC
Q37
B
E
C
G
S
D
Q56
G
S
D
+
+
POWER
1
5
6
10
CN2
INT. SP
+
J4
SP
1
3
4
6
1
2
3
4
G
S
D
1
2
3
4
+
1
4
5
8
IC15
1
3
4
5
1
3
4
5
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
SEG31
36
COM0
1
COM1
COM2
LCD
ANT
44
45
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 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
S
I
H
G
F
E
D
C
B
A
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
R240
R241
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
C7
C8
C9
R290
R291
Q52
D1
D2
Q58
D5
D6
D8
D9
C270
C276
C281
C282
C283
C284
C285
C286
C293
C294
C295
C298
C299
TH4
R100
CN10
R101
R102
S
D
G
R103
R104
CN15
CN17
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
CP31
D36
CP32 CP33
R130
R325
R326
L10
CD1
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
C336
L56
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
R55
R56
R59
R60
R61
C366
R62
R64
C177
C178
C179
R88
CN1
R91
R92
R93
R94
R95
R96
X3
R97
R98
R99
C10
C11
C13
C14
R200
C15
R201
C17
C18
C19
IC12
1
4
3
6
1
6 ENCA
GND
ENCB
VOL IN
VOL OUT
GND
+
1
2
3
4
IC8
30
31
1
120
90
91
60
61
+
1
3
4
5
IC16
1
4
5
8
D
S
G
1
2
3
4
1
2
3
4
G
S
D
E
B
C
+
D
S
G
LV
B
J72-0883-09 (A/3)
R169
46
47
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 4
PC BOARD TH-K2AT/K2E/K2ET
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
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
I
H
G
F
E
D
C
B
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
*
MIC1
+
–
D42
D43
D44
D46
D47
S7
PTT
MENU
1/F
2/VFO
3/MR
F/CALL
VFO
6
5
4
7
8
9
MR
CALL
#
0
LAMP
MONI
J72-0883-09 (B/3)
J72-0883-09 (C/3)
48
TH-K2AT/K2E/K2ET PC BOARD
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 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
D
G
1
2
14
13
S
D48
D49
R336
R337
CN7
1
PTT
KYO2
BL 5
2 KIN4
KYO1
GND
6
CN8
KIN3
KIN0
KIN2
GND
MIG
8M
IM
KYO2
KYO1
KYO0
LAMP
KIN4
KYO3
KIN1
49
PC BOARD TH-K2AT/K2E/K2ET
Component side
Foil side
Layer 1
Layer 2
Layer 3
Layer 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
L50
D32
RB051L-40
R210
12
D31
DA221
R226
220
D40
B30-2156-05
D41
B30-2157-05
R227
100
R190
47k
C236
0.01u
C235
0.01u
R191
47k
2SB1184(Q,R)
Q37
D34
MAZS0270H
C246
100u10
R217
820
R167
180k
C212
0.012u
R165
820k
C211
2200p
R144
0
C228
0.1u
C207
0.01u
C220
4700p
C221
0.01u
R192
470
2SC4617(R)
Q30
R156
100k
C201
1200p
D24
MA742
C219
0.047u
2SK1830
Q27
2SC4919
Q29
C230
1u
R185
270k
R181
470
R147
470
R137
4.7k
R180
39k
R179
220k
R148
150k
C209
1000p
R151
680
R197
100
R152
150k
R173
15k
R182
1k
C226
0.1u
R161
1k
C206
0.015u
R195
100
C229
0.1u
R174
560k
R140
180k
C195
10u10
R141
18k
C196
6800p
C197
6800p
R146
18k
R207
1k
R145
4.7k
CN2
1
2
IC6
TA7368F
1
2
3
4
5
6
NF
7
PHASE
8
PRE-GND
9
PW-GND
10
POUT
C255
10u10
R206
15
C253
10u10
C252
100p
L49
R205
100
C249
1000p
D26
1SS388
C248
0.1u
2SK1830
Q31
C247
0.1u
R203
470k
D25
MA2S111
R204
180k
R202
47k
R199
1k
R160
4.7k
C205
0.047u
R178
0
C225
1u
IC5
NJM2107F
1
2
3
4
5
V+
C202
270p
R155
100k
R153
1k
R168
180k
C203
120p
R157
330k
R158
330k
C204
0.033u
R159
120k
CN1
1
2
3
4
5
6
C210
0.01u
R166
820k
C213
4.7u6.3
C256
1000p
C257
1000p
C258
0.1u
R209
100k
R208
10
F3
0.5A
C198
1u
C250
1u
C240
1000p
C270
1000p
C271
1000p
C279
1000p
C280
1000p
R257
*
R258
*
R259
*
R260
47k
R261
*
C238
1000p
C241
1000p
R201
4.7k
C242
0.01u
C237
10u10
R193
1.8k
R224
18k
R223
220k
C239
1000p
2SB1184(Q,R)
Q33
2SK1830
Q34
R211
470k
D33
RB051L-40
C276
1000p
2SJ347
Q36
R272
4.7k
C272
470p
C290
1000p
C291
1000p
C320
*
C321
*
R177
10k
R212
10k
R214
10k
R162
180k
R163
560k
R196
10k
R216
10k
R200
10k
R194
10k
R213
22k
IC17
NJM2902V
1
2
3
4
V+
5
6
7
8
9
10
11
GND
12
13
14
CPH3417
Q56
C331
1000p
R215
470k
R273
1k
2SC4617(R)
Q38
Q47
RN1701
C208
82p
IC16
NJM2904V
1
2
3
4
GND
5
6
7
8
V+
C338
1u
J3
MIC
J4
SP
R324
47k
C339
0.047u
R330
470
C193
4.7u6.3
R332
15
C349
0.1u
C350
*
C351
0.01u
C352
1000p
C353
1000p
R335
1k
D27
RB706F-40
TH3
100k
D30
RB521S-30
2SK1830
Q35
R171
56k
(D)
R170
47k
(D)
D22
1SS361
C358
0.047u
VR5
50k
VR6
100k
R142
4.7k
R149
47k
R143
470
C231
1000p
C223
1000p
C224
0.1u
R176
820k
R175
2.2k
C222
0.01u
D36
RB521S-30
D35
RB521S-30
C286
1u
C283
1000p
C282
1000p
C285
1000p
C284
1000p
C281
1000p
IC4
XC6202PB52FR
1
2
4
GND
3
R264
*
Q59
*
R344
*
C511
*
C512
*
C517
*
R349
0
D74
DA221
D79
DA221
C505
0.047u
R354
0
D80
RB521S-30
C506
1000p
C232
1000p
C218
1000p
R218
0
R198
10k
R164
10k(D)
CHARGE SW
DC IN
TX LED
BUSY LED
SP MUTE SW
DCS BAL
SPG
AFO
SPK
REM/TXD
IM
MAX DEV
DTMF/1750
MIC
PTT
T0
SP
MOD
VOLOUT
MIC
MUTE
SW
WX1050Hz
5MV
5MV
VOX
DETECTION AMP
DTMF/BEEP/1750/W-ALT
AF AMP/
LAMP AVR
8V
5C/5R/5T AVR
5MS
RXD
REM
TXD
PTTE
BTEMP
CHARGE
VOLIN
8 OHM
SPG
SPK
BATTERY
TERMINAL
5MS
11.5V AVR
RXD
PTTE
IM
TXD
SPM
MIG
ENCA
ENCB
5MS
IM
VOLOUT
MIG
MICM
NAR
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/NARROW
CHANGEOVER SW
Q56 OPERATION SW
Q31
CONSTANT-
CURRENT
CIRCUIT
Q33 OPERATION SW
NI-MH
TEMPERATURE
DETECTION
DC IN
DETECTION
REVERSE
CURRENT
PREVENTION
D33,35,36
Q36
AVR
CONSTANT-
VOLTAGE
Q37 OPERATION SW
Q38
Q37
TX/BUSY
LED SW
WX DETECTION AMP
MIC MUTE
CONTROL
MIC ALC
RECTIFICATION
D27
D24
VOX DETECTION
RECTIFICATION
SP MUTE
SPEED UP
C246 DISCHARGE
D26
REVERSE CURRENT
PREVENTION
REVERSE CURRENT
PREVENTION
LIMITER
D74,79
REVERSE CURRENT
PREVENTION
D80
5T
VOUT
VSS
VIN
1
VCC
VIN
RIPPLE
VOLIN
ENCA
NAR
ENCB
MOD
TO
5MS
QT/DQT
ENCB
ENCA
QT/DQT
5R
5T
5MS
5C
MOD
TO
NAR
VOLIN
VOXIN
SIGIN
TONE
REM
5MV
RXLED
NOAA
MICM
+B
5M
AFAMP
CHARGE
BTEMP
BTDET
DCDET
+B
RXD
SPM
TXD
IM
PTTE
MIG
8V
ROTARY
ENCODER
&
VOL KNOB
VOLOUT
VOLIN
ENCB
GND
ENCA
GND
R169
100k(D)
R186
68k
-t
C227
2.2u4
R183
33k
TH4
100k
R353
33k
R172
10k
13.43V
13.8V
T:0V
R:4.89V
11.45V
7.07V
13.58V
4.80V
7.07V
3.23V
T:4.92V
R:0V
2.08V
T:73mV
R:3.39V
T:3.29V
R:110mV
T:4.96V
R:0V
4.31V
TH-K2AT/K2E/K2ET
SCHEMATIC DIAGRAM
F
G
H
I
J
X57-674 2/5
C295
5p
C294
5p
C293
47p
R254
1k
R256
1k
R253
1k
CP31
3.9k
Q52
RN1107
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
COM2
62
COM3
63
VSS
64
SEG16
65
SEG17
66
SEG18
67
SEG19
68
SEG20
69
SEG21
70
SEG22
71
SEG23
72
SEG24
73
NC
74
NC
75
SEG25
76
SEG26
77
SEG27
78
SEG28
79
SEG29
80
SEG30
81
SEG31
82
V0
83
V1
84
V2
85
V3
86
HST(VCC)
87
MD2
88
MD1
89
MD0
90
RESET
91
VSS
92
X0
93
X1
94
VCC
95
PWRSW
96
INTUP
97
INTDW
98
DCDET
99
RXLED
100
BSFT
101
PLLEN
102
PLLLD
103
KIN0
104
KIN1
105
KIN2
106
KIN3
107
KIN4
108
TYPE
109
VUKEY
110
MICM
111
NOAA
112
5R
113
SHIFT
114
5T
115
KOUT0
116
KOUT1
117
KOUT2
118
KOUT3
119
VSS
120
BTDET
X3
7.982MHz
R277
47k
C332
0.1u
C335
0.1u
C336
0.1u
R282
0
R283
0
R285
0
R286
0
CP32 1k
CP33 1k
CP34 1k
CP35
1k
R310
3.9k
R313
3.3k
R318
1k
R325
47k
R326
0
R342
0
R343
0
R235
1k
C359
0.1u
C360
0.1u
R312
4.7k
R276
47k
R275
47k
R323
4.7k
LCD (B38-0881-05)
1
COM0
2
COM1
3
COM2
4
COM3
5
SEG0
6
SEG1
7
SEG2
8
SEG3
9
SEG4
10
SEG5
11
SEG6
12
SEG7
13
SEG8
14
SEG9
15
SEG10
16
SEG11
17
SEG12
18
SEG13
19
SEG14
20
SEG15
21
SEG16
22
SEG17
23
SEG18
24
SEG19
25
SEG20
26
SEG21
27
SEG22
28
SEG23
29
SEG24
30
SEG25
31
SEG26
32
SEG27
33
SEG28
34
SEG29
35
SEG30
36
SEG31
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
SEG26
SEG25
SEG28
SEG30
SEG27
SEG31
SEG29
SEG24
SEG19
SEG16
SEG18
SEG22
SEG23
SEG17
SEG21
SEG20
COM1
COM2
COM0
COM3
SEG4
SEG2
SEG1
SEG6
SEG3
SEG5
SEG7
SEG10
SEG8
SEG11
SEG0
SEG9
SEG13
SEG12
SEG14
SEG15
ENCA
ENCB
5C/5R/5T AVR
5C/5R/5T AVR
MPU
DTMF/BEEP
BEAT SHIFT SW
SQV
SMV
5MV
+B
TEMP
5T
VOLIN
ENCA
NAR
ENCB
MOD
TO
5C
5R
5MS
QT/DQT
VOXIN
5MV
TONE
SIGIN
REM
RXLED
NOAA
MICM
+B
AFAMP
BTEMP
TXD
MIG
+B
CHARGE
5M
DCDET
PTTE
SPM
IM
RXD
BTDET
8V
SEG14
SEG15
VSS
C0R1
ENCA
ENCB
5MS
DVCC
DVSS
DTMF/BEEP
TONE
AVCC
AVRH
AVRL
AVSS
REM
SIGIN
SQ
SM
VOXIN
THERM
BATT
BTEMP
VCC
CHARGE
LAMP
AFAMP
NAR
COM0
COM1
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
AFM
KAPC
PLLLD
SMV
SQV
CLOCK
5MV
DATA
5T
VOLIN
NAR
MOD
TO
5C
5R
5MS
QT/DQT
SHIFT
PLLEN
+B
TEMP
FINAL
5M
BATT
5MS SW
LAMP
5C SW
VOX
5R SW
5T SW
PTTI
5M
EEPDI
EEPCS
BPF/APC
MIG
IM
+B
5M
8V
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1
KIN0
KIN4
KOUT2
RESET
PWR 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
R231
150
R238
1k
D48
B30-2237-05
R236
1k
D60
R252
100k
D62
D63
D65
D64
C313
0.039u
C304
1000p
R239
1k
R241
330k
C307
0.1u
R242
330k
C299
1u
R243
330k
R240
100k
C318
1000p
C317
1000p
R255
0
C298
1000p
C300
1000p
C302
1000p
C305
1000p
C306
1000p
C308
1000p
CPH3317
Q55
D69
MA2S111
D70
MA2S111
D71
MA2S111
D72
MA2S111
IC15
AT25160N10SI27
1
CS
2
SO
3
WP
4
GND
5
6
7
8
R263
10k
C303
150u6.3
IC11
S-80930CNNBG80
1
VSS
2
VDD
4
OUT
3
CD
IC10
S-80844CNNBB85
1
2
4
VSS
3
NC
CN6
1
2
3
4
5
6
CN7
1
2
3
4
5
6
CN9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R328
470k
C344
1000p
C345
1000p
C346
1000p
C347
1000p
C348
1000p
C354
1000p
C355
0.01u
S7
S70-0485-05
Q51
RN4902
Q41
RN2105
Q57
RN2105
IC12
TK11250CUCB
1
NP
2
GND
3
CONT
4
VIN
6
VOUT
IC9
TK11250CM
1
2
3
4
VOUT
5
GND2
6
VIN
C309
1u
C311
0.1u
C314
1000p
C330
1000p
C316
0.1u
C319
10u10
Q53
RN2701
C515
*
C516
*
C514
*
C243
1000p
D46
B30-2205-05
D44
*
CN8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MIC1
D47
*
R230
*
2SK1830
Q50
R337
470
R336
220
D42
B30-2205-05
D43
B30-2205-05
R248
3.9k
C312
0.039u
R246
3.9k
C310
1u
L63
R244
0
C297
0.1u
EEPROM
SET
INT0
RESET
BIT3
MONI
JUMPER
PTT
LAMP
KEY
TYPE
BIT2
BIT1
BIT0
PTT BOARD
5.0V AVR
PTT
KIN4
KYO2
KYO1
BL
GND
KIN3
KYO2
KIN0
KYO1
KIN2
KYO0
GND
LAMP
MIG
KIN4
8M
KYO3
IM
KIN1
5C/5R/5T AVR
5.0V AVR
4.4V VOLTAGE DETECTION
3.3V VOLTAGE DETECTION
5R/5MV
SW
10KEY
BOARD
TX-RX UNIT
(X57-674X-XX)(B/3)
MENU
TX-RX UNIT
(X57-674X-XX)(C/3)
5MS SW
5C SW
5T SW
LCD LED SW
KEY LED SW
KEY
ILLUMINATION
LED
D42-44,46,47
D48,49
LCD
ILLUMINATION
LED
KEY TYPE
DETECTION
D60
D62-65
MARKET CODE
DETECTION
REVERSE
CURRENT
PREVENTION
D69-72
POWER SW
BPF/APC
+B
5MS
AFM
PLLLD
KAPC
DATA
SMV
SQV
5MV
CLOCK
QT/DQT
VOLIN
5C
5R
MOD
TO
5MS
5T
NAR
SHIFT
PLLEN
+B
TEMP
FINAL
5M
SI
SCK
HOLD
VCC
BATT
5MS SW
LAMP
5C SW
VOX
5R SW
5T SW
PTTI
5M
EEPDI
EEPCS
BPF/APC
MIG
IM
+B
5M
8V
KIN3
KIN0
KIN2
KIN1
KIN4
TYPE
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
INT0
PWR SW
RESET
*
7
1/F
4
2/VFO
5
8
0
6
9
#
3/MR
MR
F/CALL
VFO
CALL
*
*
*
CONT
GND1
NP
OUT
VDD
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SQV
SMV
CLOCK
DATA
KAPC
AFM
PLLEN
PLLLD
SHIFT
+B
5C
FINAL
TEMP
MA2S111
MA2S111
ON:6.90V
4.83V
4.66V
4.92V
4.68V
4.69V
T:4.95V
R:0V
T:4.95V
R:0V
5.01V
T:0V
R: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/K2ET
SCHEMATIC DIAGRAM
5C
D16
MA2S111
C41
4.7u6.3
R36
10
R35
120k
C40
0.1u
R30
1.2k
R31
2.2k
C33
0.22u35
C35
0.1u35
KTC4082
Q23
R132
2.2k
R131
330k
R130
100
IC3
TA31136FN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C174
180p
R135
470k
C176
0.1u
C180
120p
C191
0.01u
2SC5488
Q24
R134
390k
R133
1k
R124
3.3k
C172
1800p
C182
0.1u
C13
0.5p
(B)
C20
8p
C22
18p
R19
120k
2SC4617(R)
Q4
R21
4.7k
D7
MA2S111
C27
10u10
R125
560
C45
100p
C46
100p
C44
100p
C52
10p
R38
56k
R20
1k
C34
4.7u6.3
R24
470
C167
0.1u
R118
27k
2SC4617(R)
Q21
C168
0.1u
2SK1830
Q20
C169
0.068u
C170
0.068u
R116
120k
R126
27k
R123
1.8k
C171
1000p
C186
24p
C187
2p
C188
24p
C189
1000p
C192
0.01u
C183
0.1u
R128
3.3k
R122
2.7k
R119
1.8k
C50
22p
C51
22p
2SK1830
Q3
R6
1k
C54
1000p
C55
0.01u
C38
0.01u
C43
0.01u
R5
100k
C14
1000p
C15
12p
C178
0.01u
C177
22u6.3
R127
47
C11
1000p
C26
1000p
C25
1000p
C30
1000p
C21
1000p
C37
1000p
C42
1000p
C190
0.01u
CP2
3.9k
2SC5488
Q6
C179
0.1u
L8
120n
R12
47
C175
22p
C173
180p
L46
560n
CD1
450kHz
2SC5488
Q5
R18
10
C19
15p
R15
5.6k
C17
C18
R14
R17
3.3k
R16
CF1
L72-0968-05
L58
820n
L64
4.7u
C57
10p
R188
47
R8
100k
R189
0
C56 1000p
VR1
500k
C1
0.01u
C4
1000p
D5
HSC277
C5
0.1u
C6
1000p
R4
1k
R11
150k
C10
0.01u
2SC5488
Q2
R10
47
L9
82n
IC1
LMX2316TMX
1
2
3
4
5
6
7
8
9
GND3
10
CE
11
CLK
12
DATA
13
LE
14
FO/LD
15
VCC2
16
VP
CP1
2.7k
C24
1000p
R117
2.7k
(D)
L53
15n
R32
1k
C194
0.1u
R120
2.7k
C166
0.01u
L45
560n
L1
10u
D1
1SV325
D2
1SV325
L2
47n
L6
10u
C2
1000p
L3
82n
2SC5066(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)
D6
1SV305
R7
47k
C124
0.1u
R115
5.6k
R37
56k
Q22
RN2105
L68
X1
12.8MHz
L77-1931-05
VC
GND
R348
220
C161
1000p
CN15
CN17
*
LV
PLL IC
FM IC
450kHz
PLLLD
CLOCK
DATA
PLLEN
2nd L.O.
SHIFT
WIDE/NARROW
CHANGEOVER SW
AF MUTE SW
SQV
SMV
5R
SQ FILTER
IF AMP
FREQ
VCO
RF AMP
RF AMP
VCO SHIFT CONTROL SW
RIPPLE FILTER
RF AMP
SPEED UP
TRIPLER
AF FILTER
5T
+B
AFM
VOLIN
5R
5R
5R
KAPC
FINAL
TEMP
BPF/APC
BPF/APC
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SMV
SQV
DATA
CLOCK
AFM
KAPC
SHIFT
PLLEN
PLLLD
+B
5C
FINAL
TEMP
MOD
SQV
SMV
QT/DQT
NAR
PLLEN
5MS
AFM
SHIFT
5C
PLLLD
TO
CLOCK
5R
DATA
VOLIN
DATA
5R
CLOCK
PLLLD
5C
AFM
PLLEN
NAR
QT/DQT
SMV
SQV
VOLIN
BPF/APC
5R
NAR
SMV
SQV
BPF/APC
VCO FREQUENCY CONTROL
D1,2
VCO MODULATION
D6
D5
FREQUENCY SHIFT
FLO
CPO
GND1
GND2
FIN
FIN
VCC1
OSCI
PLL LOCK DETECTION
D16
OUTPUT
VCC
FINAL
KAPC
TEMP
1000p
1000p
3.3k
470
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
AFOUT
QUAD
IFOUT
RSSI
N-DET
N-REC
GND
MIXIN
4.45V
4.63V
1.58V
3.63V
4.45V
T:0V
R:4.63V
W:111mV
N: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
Y
X
W
V
U
1
2
3
4
5
6
7
-t
C83
0.01u
C84
0.1u
L13
R53
100
R47
5.6k
D8
HSC277
D9
HSC277
IC2
NJM2904V
1
AOUT
A-IN
A+IN
4
GND
5
8
2
7
3
6
C109
1000p
C111
1000p
R77 150k
(D)
R76
150k (D)
R74
100k
(D)
R75
100k
(D)
R78
150k
(D)
R79
150k
(D)
R80
10k
R81
390k
R82
27k
R83
56k
C110
1000p
R70
0.39
R71
0.39
R72
0.39
R86
5.6k
C136
10p
R91
1k
R46
10k
C128
0.01u
C125
1.5p
C126
10p
R90
330
R45
3.3k
C135
12p
D15
MA8039
C117
1000p
C113
1000p
2SK2596
Q11
C133
0.01u
R102
0
R55
470
C97
12p
(G)
C99
13p
(G)
C101
24p
(G)
C96
12p
(G)
R93
47
R94
330
C159
2p
(B)
C98
8p
(B)
C88
56p
R85
560
R84
100k
C108
100p
D14
MA2S111
D10
XB15A709
C114
1000p
L19
9T
L16
R97
82k
C69
4p
R56
1k
R58
10
R60
56k
C95
12p
(G)
C116
10u4
C115
1000p
2SK3476
Q12
R51
470
C129
11p
C65
18p
C118
1000p
C76
39p
C89
1000p
C93
8p
C100
7p
(B)
R92
3.3k
R54 100
R59
12k
C132
0.01u
Q14
RN4902
D12
HVC131
D13
HVC131
3SK318
Q16
D18
1SV305
D19
1SV305
D20
1SV305
D21
1SV305
R50
33
R49
330
C107
1000p
2SK1830
Q13
C61
1000p
C64
1000p
C67
1000p
C71
1000p
C75
1000p
C74
33p
C78
1000p
C82
1000p
C94
1000p
C162
47p
(G)
C163
1000p
C153
1000p
C147
1000p
C134
1000p
C130
1000p
C131
0.01u
2SC5488
Q9
C91
1000p
R61
220
R62
220
C90
1000p
R98
82k
R96
82k
R95
100k
C141
1000p
L17
18.5n
L20
7T
L21
9T
L10
82n
L11
82n
L54
56n
2SK1830
Q58
C323
1000p
C325
1000p
R41
270
R39
270
R271
12
C326
1000p
C327
0.1u
C328
1u
C329
56p
XF1
L71-0619-05
L41
18n
L40
68n
L38
82n
L35
82n
L32
82n
C148
22p
(G)
C158
22p
(G)
C145
22p
(G)
C160
27p (G)
C504
2p (B)
L66
120n
R103
2.7k
R101
47
R104
56
2SK1215(E)
Q17
L12
10n
L15
6.8n
L55
10n
L56
22n
R64
0
C324
1000p
C106
1000p
C105
1000p
C152
1000p
C502
3p
(B)
C501
1.5p
(B)
C500
1.5p
(B)
R290
0
R88
330
C356
0.01u
C357
1u
L18
220n
TH1
10k
L14
47n
L27
680n
C85
56p
C366
100p
C503
100p
C73
1000p
C137
5p
C138
1000p
L29
22n
L28
27n
D73
MA2S111
R52
1k
R111
1.0M
R100
1.0M
R99
1.0M
R110
1.0M
C68
18p
L23
9T
L22
9T
2SC4926YD
Q10
R42
100
2SC4617(R)
Q15
R33
22
R34
3.3k
C66
1u
R341
0
C142
1000p
C112
1000p
C72
0.1u
C70
1u
C92
1000p
D17
HSM88AS
C510
*
R345
0
R346
68
R347
100
R351
220
L26
470n
R291
0
CN10
VDD
APC
DIFFERENTIAL
AMP
DC SW
TEMP
COMPENSATION
TX PATH
1st MIXER
1st
IF
38.85MHz
VGG
APC
ANT
KAPC
5T
RF AMP
DRIVE
AMP
DRIVE
AMP
POWER
AMP
APC CIRCUIT
OPERATION SW
APC OUTPUT SW
APC OUTPUT
VOLTAGE LIMITTER
Q12 GATE
VOLTAGE SW
OVER INPUT
PROTECTION
ANTENNA SW
D12,13
ANTENNA SW
RX 1st AMP
Q10 OPERATION SW
VOLTAGE
DROP
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 PREVENTION
D14
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:4.23V
R:0V
T:4.85V
R: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:0V
R:0V
X57-674 5/5
TX-RX UNIT (X57-674X-XX)(A/3)
Note : The components marked with a
dot ( ●) are parts of layer1.
-t
-t
5C
5MS
5R
D16
MA2S111
C41
4.7u6.3
R36
10
R35
120k
C40
0.1u
R30
1.2k
R31
2.2k
C33
0.22u35
C35
0.1u35
KTC4082
Q23
R132
2.2k
R131
330k
R130
100
C83
0.01u
C84
0.1u
L13
R53
100
R47
5.6k
D8
HSC277
D9
HSC277
IC2
NJM2904V
1
AOUT
A-IN
A+IN
4
GND
5
8
2
7
3
6
C109
1000p
C111
1000p
R77 150k
(D)
R76
150k (D)
R74
100k
(D)
R75
100k
(D)
R78
150k
(D)
R79
150k
(D)
R80
10k
R81
390k
R82
27k
R83
56k
C110
1000p
R70
0.39
R71
0.39
R72
0.39
R86
5.6k
C136
10p
R91
1k
R46
10k
IC3
TA31136FN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
C174
180p
R135
470k
C176
0.1u
C180
120p
C128
0.01u
C191
0.01u
C125
1.5p
C126
10p
2SC5488
Q24
R90
330
R134
390k
R133
1k
R124
3.3k
C172
1800p
C182
0.1u
C13
0.5p
(B)
C20
8p
C22
18p
R19
120k
2SC4617(R)
Q4
R21
4.7k
D7
MA2S111
C27
10u10
R45
3.3k
C135
12p
F1
2.5A
D15
MA8039
C117
1000p
C113
1000p
R125
560
2SK2596
Q11
C45
100p
C46
100p
C44
100p
C52
10p
R38
56k
R20
1k
C133
0.01u
R102
0
R55
470
C97
12p
(G)
C99
13p
(G)
C101
24p
(G)
C96
12p
(G)
R93
47
R94
330
C159
2p
(B)
C98
8p
(B)
C88
56p
R85
560
R84
100k
C108
100p
D14
MA2S111
D10
XB15A709
C114
1000p
L19
9T
L16
R97
82k
C69
4p
R56
1k
R58
10
R60
56k
C95
12p
(G)
C116
10u4
C115
1000p
C34
4.7u6.3
R24
470
2SK3476
Q12
J2
L50
D32
RB051L-40
R210
12
D31
DA221
C295
5p
C294
5p
C293
47p
R237
100k
D49
B30-2237-05
R231
150
R238
1k
R226
220
D40
B30-2156-05
D41
B30-2157-05
D48
B30-2237-05
R227
100
R236
1k
R190
47k
C236
0.01u
C235
0.01u
R191
47k
2SB1184(Q,R)
Q37
D34
MAZS0270H
C246
100u10
R217
820
C167
0.1u
R118
27k
2SC4617(R)
Q21
R167
180k
C212
0.012u
C168
0.1u
R165
820k
2SK1830
Q20
C169
0.068u
C170
0.068u
R116
120k
C211
2200p
R144
0
C228
0.1u
C207
0.01u
C220
4700p
C221
0.01u
R192
470
2SC4617(R)
Q30
R156
100k
C201
1200p
D24
MA742
C219
0.047u
2SK1830
Q27
2SC4919
Q29
C230
1u
R185
270k
R181
470
R147
470
R137
4.7k
R180
39k
R179
220k
R148
150k
C209
1000p
R151
680
R197
100
R152
150k
R173
15k
R182
1k
C226
0.1u
R161
1k
C206
0.015u
R195
100
C229
0.1u
R174
560k
R140
180k
C195
10u10
R141
18k
C196
6800p
C197
6800p
R146
18k
R207
1k
R145
4.7k
CN2
1
2
IC6
TA7368F
1
2
3
4
5
6
NF
7
PHASE
8
PRE-GND
9
PW-GND
10
POUT
C255
10u10
R206
15
C253
10u10
C252
100p
L49
R205
100
C249
1000p
D26
1SS388
C248
0.1u
2SK1830
Q31
C247
0.1u
R203
470k
D25
MA2S111
R204
180k
R202
47k
R126
27k
R123
1.8k
C171
1000p
C186
24p
C187
2p
C188
24p
C189
1000p
C192
0.01u
C183
0.1u
R128
3.3k
R199
1k
R160
4.7k
C205
0.047u
R178
0
C225
1u
IC5
NJM2107F
1
2
3
4
5
V+
C202
270p
R155
100k
R153
1k
R168
180k
C203
120p
R157
330k
R158
330k
C204
0.033u
R159
120k
CN1
1
2
3
4
5
6
C210
0.01u
R166
820k
C213
4.7u6.3
C256
1000p
C257
1000p
C258
0.1u
R209
100k
R208
10
D60
R122
2.7k
R119
1.8k
F3
0.5A
R51
470
C129
11p
C198
1u
C250
1u
C65
18p
C118
1000p
C76
39p
C89
1000p
C93
8p
C100
7p
(B)
R92
3.3k
R54 100
R59
12k
C50
22p
C51
22p
2SK1830
Q3
R6
1k
C132
0.01u
C54
1000p
C55
0.01u
C38
0.01u
C43
0.01u
Q14
RN4902
R254
1k
R256
1k
R252
100k
D62
D63
D65
R253
1k
D64
D12
HVC131
D13
HVC131
3SK318
Q16
D18
1SV305
D19
1SV305
D20
1SV305
D21
1SV305
C313
0.039u
R50
33
R49
330
C304
1000p
R239
1k
R241
330k
C307
0.1u
R242
330k
C299
1u
R243
330k
R240
100k
C107
1000p
2SK1830
Q13
R5
100k
CP31
3.9k
C14
1000p
C15
12p
C178
0.01u
C177
22u6.3
R127
47
C11
1000p
C26
1000p
C25
1000p
C30
1000p
C21
1000p
C37
1000p
C42
1000p
C190
0.01u
C61
1000p
C64
1000p
C67
1000p
C71
1000p
C75
1000p
C74
33p
C78
1000p
C82
1000p
C94
1000p
C162
47p
(G)
C163
1000p
C153
1000p
C147
1000p
C134
1000p
C130
1000p
C131
0.01u
C240
1000p
C270
1000p
C271
1000p
C279
1000p
C280
1000p
C318
1000p
C317
1000p
R257
*
R258
*
R259
*
R260
47k
R261
*
C238
1000p
C241
1000p
R201
4.7k
C242
0.01u
C237
10u10
R193
1.8k
R224
18k
R223
220k
Q52
RN1107
C239
1000p
CP2
3.9k
R255
0
2SC5488
Q9
2SC5488
Q6
C91
1000p
R61
220
R62
220
C90
1000p
R98
82k
R96
82k
R95
100k
C141
1000p
2SB1184(Q,R)
Q33
2SK1830
Q34
R211
470k
D33
RB051L-40
C276
1000p
2SJ347
Q36
R272
4.7k
C272
470p
C290
1000p
C291
1000p
C298
1000p
C300
1000p
C302
1000p
C305
1000p
C306
1000p
C308
1000p
C320
*
C321
*
L17
18.5n
L20
7T
L21
9T
C179
0.1u
L8
120n
R12
47
CPH3317
Q55
C175
22p
C173
180p
R177
10k
R212
10k
R214
10k
R162
180k
R163
560k
R196
10k
R216
10k
R200
10k
R194
10k
R213
22k
D69
MA2S111
D70
MA2S111
D71
MA2S111
D72
MA2S111
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
COM2
62
COM3
63
VSS
64
SEG16
65
SEG17
66
SEG18
67
SEG19
68
SEG20
69
SEG21
70
SEG22
71
SEG23
72
SEG24
73
NC
74
NC
75
SEG25
76
SEG26
77
SEG27
78
SEG28
79
SEG29
80
SEG30
81
SEG31
82
V0
83
V1
84
V2
85
V3
86
HST(VCC)
87
MD2
88
MD1
89
MD0
90
RESET
91
VSS
92
X0
93
X1
94
VCC
95
PWRSW
96
INTUP
97
INTDW
98
DCDET
99
RXLED
100
BSFT
101
PLLEN
102
PLLLD
103
KIN0
104
KIN1
105
KIN2
106
KIN3
107
KIN4
108
TYPE
109
VUKEY
110
MICM
111
NOAA
112
5R
113
SHIFT
114
5T
115
KOUT0
116
KOUT1
117
KOUT2
118
KOUT3
119
VSS
120
BTDET
X3
7.982MHz
IC15
AT25160N10SI27
1
CS
2
SO
3
WP
4
GND
5
6
7
8
L10
82n
L11
82n
L54
56n
2SK1830
Q58
C323
1000p
R263
10k
C325
1000p
R41
270
R39
270
R271
12
C326
1000p
C327
0.1u
C328
1u
C329
56p
XF1
L71-0619-05
L41
18n
L40
68n
L38
82n
L35
82n
L32
82n
C148
22p
(G)
C158
22p
(G)
C145
22p
(G)
C160
27p (G)
C504
2p (B)
L66
120n
R103
2.7k
R101
47
R104
56
IC17
NJM2902V
1
2
3
4
V+
5
6
7
8
9
10
11
GND
12
13
14
CPH3417
Q56
C331
1000p
L46
560n
R215
470k
R273
1k
2SC4617(R)
Q38
Q47
RN1701
C303
150u6.3
IC11
S-80930CNNBG80
1
VSS
2
VDD
4
OUT
3
CD
IC10
S-80844CNNBB85
1
2
4
VSS
3
NC
2SK1215(E)
Q17
L12
10n
L15
6.8n
L55
10n
L56
22n
C208
82p
R64
0
IC16
NJM2904V
1
2
3
4
GND
5
6
7
8
V+
CD1
450kHz
R277
47k
2SC5488
Q5
R18
10
C19
15p
R15
5.6k
C17
C18
R14
R17
3.3k
R16
C324
1000p
CN6
1
2
3
4
5
6
CN7
1
2
3
4
5
6
C332
0.1u
C106
1000p
C105
1000p
CF1
L72-0968-05
L58
820n
C152
1000p
C335
0.1u
C336
0.1u
R282
0
R283
0
R285
0
R286
0
L64
4.7u
C57
10p
R188
47
C338
1u
J3
MIC
J4
SP
C502
3p
(B)
C501
1.5p
(B)
C500
1.5p
(B)
R290
0
CN9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CP32 1k
CP33 1k
CP34 1k
CP35
1k
R310
3.9k
R313
3.3k
R318
1k
R8
100k
R189
0
R324
47k
C339
0.047u
R325
47k
R326
0
R342
0
R343
0
R328
470k
R330
470
C193
4.7u6.3
C56 1000p
R332
15
C344
1000p
C345
1000p
C346
1000p
C347
1000p
C348
1000p
R88
330
C349
0.1u
C350
*
C351
0.01u
C352
1000p
C353
1000p
R335
1k
C354
1000p
C355
0.01u
C356
0.01u
C357
1u
L18
220n
R235
1k
VR1
500k
D27
RB706F-40
C359
0.1u
C360
0.1u
C1
0.01u
C4
1000p
D5
HSC277
C5
0.1u
C6
1000p
R4
1k
R11
150k
C10
0.01u
2SC5488
Q2
R10
47
S7
S70-0485-05
TH3
100k
TH1
10k
L9
82n
L14
47n
L27
680n
C85
56p
C366
100p
C503
100p
C73
1000p
C137
5p
C138
1000p
L29
22n
L28
27n
D73
MA2S111
IC1
LMX2316TMX
1
2
3
4
5
6
7
8
9
GND3
10
CE
11
CLK
12
DATA
13
LE
14
FO/LD
15
VCC2
16
VP
CP1
2.7k
C24
1000p
D30
RB521S-30
2SK1830
Q35
R52
1k
R111
1.0M
R100
1.0M
R99
1.0M
R110
1.0M
R117
2.7k
(D)
R171
56k
(D)
R170
47k
(D)
L53
15n
C68
18p
D22
1SS361
L23
9T
L22
9T
R32
1k
C358
0.047u
VR5
50k
VR6
100k
R142
4.7k
R149
47k
R143
470
Q51
RN4902
C194
0.1u
R120
2.7k
C166
0.01u
L45
560n
2SC4926YD
Q10
R42
100
2SC4617(R)
Q15
R33
22
R34
3.3k
C66
1u
L1
10u
D1
1SV325
D2
1SV325
L2
47n
L6
10u
C2
1000p
L3
82n
2SC5066(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)
D6
1SV305
R7
47k
R341
0
C142
1000p
C112
1000p
C72
0.1u
C70
1u
C231
1000p
C124
0.1u
C223
1000p
C224
0.1u
R176
820k
R175
2.2k
C222
0.01u
R115
5.6k
R37
56k
C92
1000p
D17
HSM88AS
R312
4.7k
Q41
RN2105
Q57
RN2105
IC12
TK11250CUCB
1
NP
2
GND
3
CONT
4
VIN
6
VOUT
IC9
TK11250CM
1
2
3
4
VOUT
5
GND2
6
VIN
C309
1u
C311
0.1u
C314
1000p
C330
1000p
C316
0.1u
C319
10u10
D36
RB521S-30
D35
RB521S-30
C286
1u
C283
1000p
C282
1000p
C285
1000p
C284
1000p
C281
1000p
R276
47k
R275
47k
Q53
RN2701
IC4
XC6202PB52FR
1
2
4
GND
3
R264
*
Q59
*
R344
*
Q22
RN2105
C510
*
C515
*
C516
*
C511
*
C512
*
C517
*
L68
R345
0
X1
12.8MHz
L77-1931-05
VC
GND
R346
68
R347
100
R348
220
R349
0
D74
DA221
D79
DA221
C505
0.047u
R351
220
L26
470n
R354
0
D80
RB521S-30
C506
1000p
R323
4.7k
C232
1000p
C218
1000p
C161
1000p
R291
0
R218
0
CN10
C514
*
CN15
CN17
*
LCD (B38-0881-05)
1
COM0
2
COM1
3
COM2
4
COM3
5
SEG0
6
SEG1
7
SEG2
8
SEG3
9
SEG4
10
SEG5
11
SEG6
12
SEG7
13
SEG8
14
SEG9
15
SEG10
16
SEG11
17
SEG12
18
SEG13
19
SEG14
20
SEG15
21
SEG16
22
SEG17
23
SEG18
24
SEG19
25
SEG20
26
SEG21
27
SEG22
28
SEG23
29
SEG24
30
SEG25
31
SEG26
32
SEG27
33
SEG28
34
SEG29
35
SEG30
36
SEG31
R198
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
SEG26
SEG25
SEG28
SEG30
SEG27
SEG31
SEG29
SEG24
SEG19
SEG16
SEG18
SEG22
SEG23
SEG17
SEG21
SEG20
COM1
COM2
COM0
COM3
SEG4
SEG2
SEG1
SEG6
SEG3
SEG5
SEG7
SEG10
SEG8
SEG11
SEG0
SEG9
SEG13
SEG12
SEG14
SEG15
LV
C243
1000p
D46
B30-2205-05
D44
*
CN8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
MIC1
D47
*
R230
*
2SK1830
Q50
R337
470
R336
220
D42
B30-2205-05
D43
B30-2205-05
R248
3.9k
C312
0.039u
R246
3.9k
C310
1u
R164
10k(D)
L63
R244
0
C297
0.1u
PLL IC
VDD
APC
DIFFERENTIAL
AMP
DC SW
TEMP
COMPENSATION
FM IC
TX PATH
1st MIXER
1st
IF
38.85MHz
450kHz
VGG
PLLLD
CLOCK
DATA
PLLEN
APC
2nd L.O.
ANT
CHARGE SW
DC IN
TX LED
BUSY LED
EEPROM
SP MUTE SW
DCS BAL
SPG
AFO
SPK
REM/TXD
IM
MAX DEV
DTMF/1750
MIC
PTT
T0
SP
MOD
VOLOUT
SHIFT
SET
KAPC
INT0
RESET
WIDE/NARROW
CHANGEOVER SW
AF MUTE SW
SQV
SMV
5R
SQ FILTER
IF AMP
MIC
MUTE
SW
WX1050Hz
5MV
5MV
VOX
DETECTION AMP
DTMF/BEEP/1750/W-ALT
5T
AF AMP/
LAMP AVR
8V
5C/5R/5T AVR
5MS
BIT3
RXD
REM
TXD
PTTE
BTEMP
MONI
JUMPER
PTT
CHARGE
VOLIN
LAMP
8 OHM
KEY
TYPE
BIT2
BIT1
BIT0
PTT BOARD
FREQ
SPG
SPK
BATTERY
TERMINAL
5MS
11.5V AVR
5.0V AVR
RXD
PTTE
IM
TXD
SPM
MIG
ENCA
ENCB
5MS
PTT
KIN4
KYO2
KYO1
BL
GND
KIN3
KYO2
KIN0
KYO1
KIN2
KYO0
GND
LAMP
MIG
KIN4
8M
KYO3
IM
KIN1
IM
VOLOUT
MIG
MICM
NAR
W/N
TX-RX UNIT (X57-674X-XX)(A/3)
ENCA
ENCB
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/5MV
SW
MIC AMP
CTCSS/DCS/WX FILTER
VCO
RF AMP
RF AMP
VCO SHIFT CONTROL SW
RIPPLE FILTER
RF AMP
RF AMP
DRIVE
AMP
10KEY
BOARD
TX-RX UNIT
(X57-674X-XX)(B/3)
MENU
TX-RX UNIT
(X57-674X-XX)(C/3)
REM
DTMF/BEEP
DTMF/BEEP
DRIVE
AMP
POWER
AMP
APC CIRCUIT
OPERATION SW
APC OUTPUT SW
APC OUTPUT
VOLTAGE LIMITTER
Q12 GATE
VOLTAGE SW
OVER INPUT
PROTECTION
ANTENNA SW
D12,13
ANTENNA SW
SPEED UP
TRIPLER
RX 1st AMP
Q10 OPERATION SW
VOLTAGE
DROP
AF FILTER
WIDE/NARROW
CHANGEOVER SW
Q56 OPERATION SW
Q31
CONSTANT-
CURRENT
CIRCUIT
Q33 OPERATION SW
NI-MH
TEMPERATURE
DETECTION
DC IN
DETECTION
REVERSE
CURRENT
PREVENTION
D33,35,36
Q36
AVR
CONSTANT-
VOLTAGE
Q37 OPERATION SW
Q38
Q37
5MS SW
5C SW
5T SW
BEAT SHIFT SW
LCD LED SW
KEY LED SW
TX/BUSY
LED SW
WX DETECTION AMP
RF SW
RF SW
RX BPF TUNING
D18,19
D20,21
RX BPF TUNING
MIC MUTE
CONTROL
MIC ALC
RECTIFICATION
D27
D24
VOX DETECTION
RECTIFICATION
SP MUTE
SPEED UP
C246 DISCHARGE
D26
REVERSE CURRENT
PREVENTION
KEY
ILLUMINATION
LED
D42-44,46,47
D48,49
LCD
ILLUMINATION
LED
KEY TYPE
DETECTION
D60
D62-65
MARKET CODE
DETECTION
REVERSE
CURRENT
PREVENTION
D69-72
5T
5T
5T
5T
+B
+B
+B
SQV
SMV
5MV
AFM
VOLIN
REVERSE CURRENT
PREVENTION
+B
5R
5R
5R
5R
5R
5R
5T
POWER SW
KAPC
KAPC
VGG
LIMITER
D74,79
REVERSE CURRENT
PREVENTION
D80
5T
FINAL
FINAL
TEMP
TEMP
BPF/APC
BPF/APC
BPF/APC
BPF/APC
TEMP
+B
5MS
VOUT
VSS
VIN
1
VCC
VIN
RIPPLE
VOLIN
ENCA
NAR
ENCB
MOD
TO
5MS
QT/DQT
ENCB
ENCA
QT/DQT
5R
5T
5MS
5C
MOD
TO
NAR
VOLIN
5T
VOLIN
ENCA
NAR
ENCB
MOD
TO
5C
5R
5MS
QT/DQT
VOXIN
SIGIN
TONE
REM
5MV
RXLED
NOAA
VOXIN
5MV
TONE
SIGIN
REM
RXLED
NOAA
MICM
+B
MICM
+B
5M
AFAMP
CHARGE
BTEMP
BTDET
DCDET
+B
RXD
SPM
TXD
IM
PTTE
MIG
8V
AFAMP
BTEMP
TXD
MIG
+B
CHARGE
5M
DCDET
PTTE
SPM
IM
RXD
BTDET
8V
SEG14
SEG15
VSS
C0R1
ENCA
ENCB
5MS
DVCC
DVSS
DTMF/BEEP
TONE
AVCC
AVRH
AVRL
AVSS
REM
SIGIN
SQ
SM
VOXIN
THERM
BATT
BTEMP
VCC
CHARGE
LAMP
AFAMP
NAR
COM0
COM1
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
AFM
KAPC
PLLLD
SMV
SQV
CLOCK
5MV
DATA
5T
VOLIN
NAR
MOD
TO
5C
5R
5MS
QT/DQT
SHIFT
PLLEN
+B
TEMP
FINAL
5M
AFM
PLLLD
KAPC
DATA
SMV
SQV
5MV
CLOCK
QT/DQT
VOLIN
5C
5R
MOD
TO
5MS
5T
NAR
SHIFT
PLLEN
+B
TEMP
FINAL
5M
SI
SCK
HOLD
VCC
BATT
5MS SW
LAMP
5C SW
VOX
5R SW
5T SW
BATT
5MS SW
LAMP
5C SW
VOX
5R SW
5T SW
PTTI
5M
PTTI
5M
EEPDI
EEPCS
BPF/APC
EEPDI
EEPCS
BPF/APC
MIG
IM
+B
5M
8V
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1
KIN0
KIN4
KOUT2
RESET
PWR SW
INT0
MIG
IM
+B
5M
8V
KIN3
KIN0
KIN2
KIN1
KIN4
TYPE
KOUT3
KOUT2
KOUT1
KOUT0
VUKEY
INT0
PWR SW
RESET
*
7
1/F
4
2/VFO
5
8
0
6
9
#
3/MR
MR
F/CALL
VFO
CALL
*
*
*
CONT
GND1
NP
OUT
VDD
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SQV
SMV
CLOCK
DATA
KAPC
AFM
PLLEN
PLLLD
SHIFT
+B
5C
FINAL
TEMP
5T
VOLIN
NAR
MOD
TO
5R
5MS
QT/DQT
SMV
SQV
DATA
CLOCK
AFM
KAPC
SHIFT
PLLEN
PLLLD
+B
5C
FINAL
TEMP
MOD
SQV
SMV
QT/DQT
NAR
PLLEN
5MS
AFM
SHIFT
5C
PLLLD
TO
CLOCK
5R
DATA
VOLIN
DATA
5R
CLOCK
PLLLD
5C
AFM
PLLEN
NAR
QT/DQT
SMV
SQV
VOLIN
BPF/APC
5R
NAR
SMV
SQV
BPF/APC
VCO FREQUENCY CONTROL
D1,2
VCO MODULATION
D6
D5
FREQUENCY SHIFT
FLO
CPO
GND1
GND2
FIN
FIN
VCC1
OSCI
PLL LOCK DETECTION
D16
OUTPUT
VCC
REVERSE CURRENT PREVENTION
D14
B+IN
B-IN
BOUT
V+
ROTARY
ENCODER
&
VOL KNOB
FINAL
KAPC
TEMP
VOLOUT
VOLIN
ENCB
GND
ENCA
GND
R169
100k(D)
R186
68k
-t
C227
2.2u4
R183
33k
TH4
100k
R353
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
1000p
1000p
3.3k
470
MA2S111
MA2S111
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
AFOUT
QUAD
IFOUT
RSSI
N-DET
N-REC
GND
MIXIN
R172
10k
ON:6.90V
4.83V
4.66V
4.92V
4.68V
4.69V
T:4.95V
R:0V
T:4.95V
R:0V
5.01V
T:0V
R:4.90V
4.45V
13.43V
13.8V
T:0V
R:4.89V
11.45V
7.07V
13.58V
4.80V
7.07V
3.23V
T:4.92V
R:0V
2.08V
ON:4.78V
ON:4.76V
T:73mV
R:3.39V
T:3.29V
R:110mV
4.83V
T:4.23V
R:0V
T:4.85V
R:0V
1.30V
12.46V
12.29V
2.00V
1.40V
4.90V
2.29V
(HIGH POWER)
4.63V
1.58V
3.63V
4.45V
T:0V
R:4.63V
W:111mV
N: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:4.96V
R:0V
4.31V
T:0V
R:0V
Note :The components marked with a
dot ( ●) 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 voltage levels must be measured at High power transmission.
The RF and IF sections are measured by using a spectrum analyzer.
After setting the standard (1 kHz, 3 kHz Dev.) deviation, each voltage
of the AF section is measured by using an AF VTVM or osciloscope.
The level for each point is measured without removing parts or cutting
the pattern.
All voltage levels must be measured after setting the AF output volt-
age at 0.58V rms.
The RF and IF sections are measured by using a spectrum analyzer.
Each voltage of the AF section is measured by using an AF VTVM or
osciloscope.
The level for each point is measured without removing parts or cutting
the pattern.
Transmitter Section
Receiver Section
TH-K2AT/K2E/K2ET
56
BLOCK DIAGRAM
Q23
TCXO
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
2SK1830
2SC4617(R)
2SC4919
1SS361
RB706F-40
NJM2107F
NJM2904V
DA221
TRIPLER
2nd Local
INT
S-80844
CNNBB85
IC10
RESET
IC11
S-80930
CNNBG80
IC15
AT25160N
10SI27
EEPROM
BEAT SHIFT
Q52
RN1107
LCD
1SV305
D6
REM,SQ,SM,BATT
DTMF/BEEP,TONE
BPF/APC
SEG0~31
COM0~3
RXD,PTTE,PTTI,
ENCA,ENCB,
PWRSW,KIN0~4,TYPE
AFM,SPM,MICM,
KAPC,FINAL,CHARGE,
AFAMP,RXLED,BTDET,TXD
5MS,5R,5T,5C(SAVE),VOX,
KYO0~3,VUKEY
VCC,DVCC
AVCC,AVRH
HST(VCC),V3
RESET
INTUP
INTDW
CLOCK
DATA
EEPCS
EEPDI
BSFT
X0
X1
PLLEN
PLLLD
CLOCK
DATA
BTEMP
KEY ILLMI
B30-2205-05
D42,43,46
D44,47
2SK1830
Q50
KEY ILLMI
SW
LAMP
PTT
LAMP
MONI
D48,49
RN4902
LCD ILLMI
SW
Q51
B30-2205-05
LCD ILLMI
DCDET
MOD
PTTI
KIN4
KYO1
KYO2
2SC5488
RF AMP
SIGIN
NAR
X57-674 B/3
NAR
5MV
5R
5C
SHIFT
5C
Q47
RN1701
TX/BUSY
LED SW
TX/RX LED
B30-2156-05
D40,41
B30-2157-05
5T
RXLED
5C
D24
MA742
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
SW
LIMITTER
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 AMP
PRE-DRIVE
RF AMP
TX/RX SW
Q17
D18,D19
D20,D21
IC3
CD1
CF1
TA31136FN
FM IC
IF AMP
MCF
RF AMP
BPF
BPF
SP MUTE SW
AF AMP
IC6
Q56
Q20
AF MUTE SW
Q21
AF FILTER
LPF
WIDE/NARR
SW
Q22
Q15
SW
B
IC2
APC AMP
NJM2904V
Q14
RN4902
APC SW
APC KILL SW
2SK1830
38.85MHz
3SK318
2SK1215
1SV305
1SV305
XB15A709
2SK3476
2SK2596
2SC4926YD
2SC4617(R)
HSC277
2SC5488
2SC5488
2SC5488
2SC4617
2SK1830
TA7368F
RN2105
SW
Q13
2SK1830
5T
5T
CPH3417
2SK1830
MUTE SW
Q31
38.4MHz
DE-EMPH
+
-
T
2SC5488
CT/DCS/WXA
FILTER
IC17
NJM2902V
5C
5R
5C
5R
5R
5R
5R
BPF/APC
B
5R
AFM
AF AVR
BPF/APC
SPM
TEMP DET
TH1
B57331V
2103J
5R
5R
APC V
D14
MA2S111
FINAL
DTMF/BEEP
SQ,SM
J2
REM
/TXD
AMP
450kHz
(R)
BATT TERMINAL
7.5V Norminal
(6.0 - 9.0V)
WXA SW
2SK1824
Q59
DC IN
13.8V Norminal
(12.0 - 16.0V)
RN2701
XC6202PB
52FR
IC1
TCXO
Q4,5,6
D40,41
Q41
D32
D80
5T SW
Q37, Q38
2SK1830
5R
5T
5M
CHARGE SW
RB051L-40
IC6
D48,49
D42,43,46
D47,44
BATT
CHARGE
5R SW
TK11250
CUCB
5.0V
TK11250
CM
VR1
ENC
AVR
5C SW
PROTECT
CPH3317
2SJ347
Q35
5C
CHARGE
BTDET
Q34
Q9,10,13
D8,10
TH1
IC16
Q47
Q57
D33
IC12
AVR
2SB1184(Q,R)
2SC4617(R)
IC4
5MS SW
Q55
5MV SW
Q36
RB521S-30
5MV
DC-IN DET
RN2105
AF AMP
2SB1184
(Q,R)
PROTECT
5.0V
11.5V
IC3,17
D9,14
Q16,17
Q22,23,24
Q59
AF/LAMP
AVR
RN2105
Q53
PROTECT
THERM DET
IC5
Q30
5MS
2SK1830
B
RB051L-40
Q33
AVR
IC9
ANT SW
D17
HSM88AS
HVC131
ANT SW
D12,D13
BPF/APC
(Ktype only)
VR
ANT
D26
1SS388
D25
MA2S111
CN2
B
PROTECT
D36
RB521S-30
D35
PROTECT
RB521S-30
PROTECT
D30
RB521S-30
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 ......... 150mA
Charging 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............................1100mAh
Dimensions (Projections included) ... 58W x 100.8H x 16.8D (mm)
Charger and charging time
KSC-24 (Rapid charger) ............. Approx. 60 minutes
Weight...........................................210g
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/K2ET
SPECIFICATIONS
KENWOOD CORPORATION
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo 192-8525, Japan
KENWOOD U.S.A. CORPORATION
P.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 GMBH
Rembrücker 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. LIMITED
KENWOOD 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 Division
1 Ang Mo Kio Street 63, Singapore 569110
Market code
K, K2
M, M2
E
E3
Number of memory channels
100 (50) + 9 special
function memories
100 (50) + 8 special function memories
Antenna impedance (Connector type)
50 Ω (SMA)
Operating Voltage
DC 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-43N
58 x 110 x 29.6 mm / 2 7/16" x 4 6/16" x 1 5/32" with BT-14
weight
Approx. 320 g / 11.3 oz with PB-43N
Approx. 320 g / 11.3 oz with BT-14
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 MHz
2nd 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