Kenwood TK-373G Service Manual

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UHF FM TRANSCEIVER

TK-373G

SERVICE MANUAL

B51-8618-00 (S) 931

Knob (ENCODER) (K29-5331-03)

Knob (VOLUME) (K29-5332-03)

Button knob (PTT) (K29-5334-13)

Button knob (MONI/LAMP) (K29-5333-13)

CONTENTS

GENERAL ......................................................................2

SYSTEM SET-UP .......................................................... 2

OPERATING FEATURES..............................................3

REALIGNMENT ............................................................. 7

DISASSEMBLY FOR REPAIR..................................... 10

CIRCUIT DESCRIPTION .............................................11

SEMICONDUCTOR DATA ..........................................15

DESCRIPTION OF COMPONENTS............................ 16

PARTS LIST.................................................................18

EXPLODED VIEW .......................................................25

PACKING .....................................................................26

Cabinet assy (A02-3568-33)

Key top (4 keys) (K29-9142-02)

ADJUSTMENT .............................................................27

PC BOARD VIEWS

DISPLAY UNIT (X54-3250-11)............................... 37

TX-RX UNIT (X57-650X-XX)..................................39

SCHEMATIC DIAGRAM .............................................. 45

BLOCK DIAGRAM ....................................................... 49

LEVEL DIAGRAM ........................................................ 51

KNB-14/KNB-15A (Ni-Cd BATTERY) ..........................52

KNB-20N (Ni-MH BATTERY)....................................... 52

KMC-17/KMC-21 (SPEAKER MICROPHONE)............53

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

TK-373G

GENERAL / SYSTEM SET-UP

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information for the equipment and is current as of the publication date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions. These are issued as required.

ORDERING REPLACEMENT PARTS

When ordering replacement parts or equipment information, the full part identification number should be included. This applies to all parts, components, kits, or chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a sufficient description of the required component for proper identification.

Unit

Model &

destination

TK-373G

TX-RX Unit Display Unit Frequency range Remarks

K X57-6500-10 450~470MHz IF1 : 49.95MHz

K2 X57-6500-11

X54-3250-11

470~490MHz LOC : 50.4MHz

PERSONNEL SAFETY

The following precautions are recommended for personnel

safety:

●

DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated.

●

SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere.

●

This equipment should be serviced by a qualified technician only.

SERVICE

This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and alignment procedures contained within.

SYSTEM SET-UP

Merchandise received

License and frequency allocated by FCC

Choose the type of transceiver

Transceiver programming

Are you using the optional antenna?

Are you using the speaker microphone?

Delivery

Frequency range (MHz) RF power Type

TX/RX 450~470 TX/RX 470~490

A personal computer (IBM PC or compatible), programming interface (KPG-22), and programming software (KPG-76D) are required for programming. (The frequency, TX power HI/LOW, and signalling data are programmed for the transceiver.)

YES

KRA-15

Whip antenna

(Option)

KMC-17 or KMC-21

Speaker microphone

(Option)

4.0W

TK-373G K

TK-373G K2

OPERATING FEATURES

TK-373G

1. Operating Features

Antenna

tt yy

yy uu

The transceiver is shown with the optional KNB-14 battery pack.

q Rotary encoder

Your dealer can program the encoder as either System Up/Down or Group Up/Down. Rotate to select a system or group.

w Transmit/ Battery low indicator

This red LED lights during transmission. If programmed by your dealer, when the batter y pack power is low, the LED flashes during transmission. Replace or recharge the battery pack at such a time.

e Power switch/ Volume control

Turn clockwise to switch ON the transceiver. Rotate to adjust the volume. To switch OFF the transceiver, turn counterclockwise fully.

r PTT (Push-to-Talk) switch

Press this switch, then speak into the microphone to call a station.

t Side 1 key

This is a PF (Programmable Function) key.

y Side 2 key

This is a PF (Programmable Function) key.

u A, B,

∞∞

∞,

5 keys

∞∞

These are PF (Programmable Function) keys.

i Speaker /Microphone jacks

Connect an optional speaker/ microphone here.

o Display

Note: The PF keys are programmed with default functions:

•

Side 1 key: Lamp

•

Side 2 key: Squelch Off Momentary

•

A key: None

•

B key: None

∞∞

•

∞

key: Group Down

∞∞

•

key: Group Up

Speaker

Microphone

Display

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Programmable Auxiliary Functions

You can program the Side 1, Side 2, A, B, with the functions listed below.

•Aux

• Display Character

• DTMF ID (BOT)

• DTMF ID (EOT)

• Group Down

• Group Up

• Home Group

• Key Lock

• Lamp

• Memory (RCL)

• Memory (RCL/STO)

• Memory (STO)

• Monitor Momentary

• Monitor Toggle

• None (No function)

• Redial

• RF Power Low

• Scan

• Scan Del/Add

• Scan Temporary Delete

• Squelch Off Momentary

• Squelch Off Toggle

• System Down

• System Up

• Telephone Disconnect

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TK-373G

OPERATING FEATURES

2. Programmable keys

The functions the FPU programs to the function keys are

described in the following sections.

1) AUX

If this key is pressed, a dot appears at the extreme right of the LCD and AUX port which is inside of the transceiver turns to the active level. If pressed again, the dot disappears and the AUX ports turns to the deactive level.

2) Display character

This key switches the LCD display between the system/ group number and system/group name.

3) DTMF ID (Begin of TX)

Pressing this key in Conventional mode, automatically sends the preset DTMF ID (Begin of TX).

4) DTMF ID (End of TX)

Pressing this key in Conventional mode, automatically sends the preset DTMF ID (End of TX).

5) Group up/down

When the key is pressed each time, the group number to be selected is incremented/decremented and repeats if held for one second or longer.

6) Home group

Each pressing of the key selects a preset system/group.

12) RF power low

Used to temporarily switch transmission output to low power. Turning the function on enables:

Hi→Low, Low→Low Key states are backed up, except in the PC mode when they are reset.

13) Scan

Pressing this key starts scanning. Pressing this key again stops scanning.

14) Scan Del/Add

Used to select whether system scan routines are used during system scan. Each pressing of the key (to ON) toggles between lockout and lock. The scan routine is started when on lock. The DEL indicator flashes when the system is on lockout.

15) Scan temporary delete

This key is temporarily deleted a system being scanned. If you press this key when scan is stopped (when a call is being received from another station), the system is temporarily deleted and scanning restarts. This key operates even when “Scan Type” is set to “List Type System Scan”.

16) Squelch off

Used to release signalling or squelch when operating in conventional mode.

7) Key lock

Pressing this key causes the transceiver to accept entry of only the [Monitor Toggle], [Key Lock], [PTT], [Lamp], [Monitor Momentary], [Squelch off Momentary], and [Squelch off Toggle] keys.

8) Lamp

This key illuminates the LCD and keys on the front panel. When the key is pressed, the LED lamp goes on. When it is released, the lamp goes off after about five seconds. If any key is pressed while the LED lamp is on, the lamp is kept on for five seconds.

9) Memory

This key allows DTMF memory data to be recalled; up to 32 memories each with a memory dial of up to 16 digits and an A/N of up to 8 digits per memory.

10) None

An error operation beep sounds, and no action will occur. Use this function when the transceiver is required to be operated more simply.

11) Redial

Pressing this key when System/Group is shown, displays the previously transmitted DTMF code. Pressing [PTT] at this time, transmits the code that is currently displayed.

17) System up/down

When the key is pressed each time, the system number to be selected is incremented/decremented and repeats if held for one second or longer.

18) Telephone disconnect

Pressing this key ends an RIC connection (disconnects the telephone line).

3. Scan Operating

1) System scan

System scan can be selected with the “Scan” key by

programming the scan feature. When the “Scan” key is pressed and the “SCN”’ mark appears, scan mode in entered. Scanning starts from the system following the currently displayed system. When a call is received, scanning stops, and the system and group are displayed.

When the system knob or programming key is touched

during scanning, the scan stops and the revert system or group can be changed. Scanning resumes one second after the key is released.

System Scan consists of the following 2 types.

●

Fix system scan

All the set systems except locked-out ones are scanned. If

the DEL/ADD feature is assigned to the programmable key, it can be controlled from the front panel.

OPERATING FEATURES

TK-373G

●

List type system scan

A scan list can be set for each system. The list to be scanned can be changed by changing the

display system

If many system have been set, the scan speed can be increased by narrowing the systems to be scanned with scan lists.

2) System lockout

The system lockout feature is used to lock systems out of the scan sequence, and can be selected by programming in the following two ways:

●

Fixed lockout

The system to be locked out is selected by programming. When a locked system is selected, the Delete ( appears on the left of the SYSTEM indicator. The revert system is scanned even if it is locked out. If there is a locked system, the Delete (

●

User selectable lockout

If the scan lockout feature is programmed to a key, the user can lock systems out of the scan sequence with the key. To lock a system out of the scan sequence, press the key when the system is displayed. The Delete ( on the left of the SYSTEM indicator.

To unlock a system, select the system and press the key. The Delete ( has returned to the scan sequence. The revert system is scanned even if it is locked out. If there a locked system, the Delete ( are locked out, the scan stops and only the revert system is received.

) indicator flashes during fixed scanning.

) indicator is displayed

) indicator disappears to indicate that the system

) indicator flashes during fixed scanning. If all systems

) indicator

3) Drop-out delay time (Scan resume time)

If a call is received during scan, the scan stops. The scan resume time can be programmed as 0 to 300 seconds in onesecond increments. The default value is 3 seconds.

4) Dwell time

The dwell time is the time after transmission ends until the scan resumes in scan mode. It can be set 0 to 300 seconds by programming. The default value is 3 seconds.

5) System/Group revert

System/Group revert can be programmed for one of the following;

the drop out delay time, the system/group is assigned as the new revert system/group.

●

Selected revert

If the system/group was changed while scanning, the newly

selected system/group.

●

Selected + talkback

If the system/group was changed while scanning, the newly selected system/group. The transceiver “talkback” on the current receive group.

6) Scan message wait

The time for staying with the home repeater that receives a signal during system scan and monitoring data messages can be programmed. If there is no signal from the home repeater, the system is scanned for about 50ms. If there is a signal, three data messages are monitored. Normally, three data messages are monitored for each system, and it can be increased in multiples of three data messages per line to up to eight lines.

If the repeater data message indicates that there is no call, data monitoring is terminated and the home repeater of the next system is scanned.

7) Group scan operation

Group scan can be programmed for each group. In addition to the ID codes of the selected group, the ID codes of the other groups that are permitted for group scan are decoded. (The two fixed ID and block decode codes are always decoded.)

If, during group scanning, a call is received with one of the selectable group ID codes for which group scan is enabled, the group display indicates the group number that the call came in with. That group then becomes the new selected group. Group scan resumes after the specified dropout delay time or dwell time shared by the system scan elapses.

8) In Conventional system.

If QT or DQT is set for the group, the groups, including signalling, are scanned.

In case of the priority group is set in conventional system, if a group scan (including group scan during a system scan) temporarily stops (receiving) in a group that does not have priority, a look back is performed to the priority group. Look back is performed according to the look back time A and B settings. If a call is received on the priority group, reception immediately switches to the priority group.

●

Last called revert

The system/group changes to the revert system or group

when a call is received with the system/group being scanned.

●

Last used revert

If a system/group call is received during scanning and the

PTT button is pressed for transmission and response within

4. Details of Features

1) Time-out timer

The time-out timer can be programmed in 15 seconds increments from 15 seconds to 600. If the transmitter is keyed continuously for longer than the programmed time, the transmitter is disabled and a warning tone sounds while the

TK-373G

OPERATING FEATURES

PTT button is held down. The alert tone stops when the PTT button is released.

2) PTT ID

PTT ID provides a DTMF ANI to be sent with the PTT button every time it is used (Begin of TX ID at beginning of transmission, End of TX ID at end of transmission, or both).

You can program the PTT ID as one of the followings.

Off, BOT (Begin of TX ID), EOT (End of PTT ID), BOTH.

You can program PTT ID “on” or “off” for each group.

The transceiver is capable of having ID. The format is DTMF.

The timing that the transceiver sends the ID is programmable.

Begin of TX ID (BOT) :Begin of TX ID is sent at the

beginning of transmission.

End of TX ID (EOT) : End of TX ID is sent at the end of

transmission.

Both : Begin of TX ID is sent at the beginning of transmission

and End of TX ID is sent at the end of transmission.

There is also a "PTT ID" setting for each group.

3) Battery Warning

This transceiver has a battery warning feature. If low voltage is detected during transmission, the transceiver warns you by a flashing red "LED".

When the voltage is detected to be even lower during transmission, the transceiver stops transmission and warns you by a flashing red "LED" and a beep.

Please notice "indication" for the battery exchange, charging time by flashing red LED and beep.

4) Radio password

When the password is set in the transceiver, user can not use the transceiver unless enter the correct password.

This code can be up to 6 digits from 0 to 9 and input with the keypad or selector, and “A” key.

5) Call indicator

The call indicator can be programmed for each group. In trunked system, it can be set to respond to a selectable decode ID or one of two fixed IDs, except block IDs. When a call is received with a selectable decode ID, the call indicator flashes. When a call is received with a fixed ID, the call indicator lights continuously.

On a conventional system, the call indicator can be programmed to light for each QT or DQT code. It keeps flashing while a call is being received. It is turned off by pressing any front panel key.

6) Free system ringback

This feature is available only when a telephone interconnected ID code is selected. If a busy tone sounds when the PTT button is pressed, the transceiver enters this mode automatically.

When the PTT button is released, a beep sounds for 400ms

to indicate that the mode has been entered. If the scan is on, it is resumed (the “SCN” mark goes on). When any repeater becomes available, a ringing tone sounds and this mode ends.

The mode is terminated when the system, group, scan, PTT,

key is changed.

7) System search

This feature can be programmed to automatically access other programmed systems when the selected system cannot be accessed. If an intercept tone sounds when the PTT button is pressed after setting the mode, the transceiver has entered the mode.

If the group ID is a telephone interconnect ID, the transceiver then attempts to access, in succession, other systems that have a telephone interconnect ID in the revert group location. If the group ID is a dispatch ID, the transceiver attempts to access other systems that have a dispatch ID programmed in the revert group location.

If there is no system to be accessed, an intercept tone sounds, the mode is terminated, and the transceiver returns to the first system. If the access is successful, the mode is terminated, and the searched system becomes the new selected system (If during scanning, the scan stops).

8) Transpond

This feature can be programmed to turn on and off for each group. If the ID of the group for which transpond is enabled is received, two data messages (transmit ID and turn-off code) are automatically transmitted if the PTT button is not pressed as a response within the time set (0 to 300 seconds in 1-second increments). If the PTT button is pressed within the time, the transpond is not preformed.

9) Transmit inhibit

The transceiver can be programmed with a transmit inhibit block of ID codes. If an ID code within this block is decoded the preset time before the PTT button is pressed, transmission is inhibited. The BUSY indicator lights and a busy tone sounds until the PTT button is released to indicate that transmission is not possible (except clear-to talk mode).

Transmission with the group for which the encode ID is not set is inhibited, and the busy tone is output while the PTT button is held down, regardless of the clear-to -talk setting.

5. Audible user feedback tones

The transceiver outputs various combinations of tones to notify the user of the transceiver operating state. The main tones are listed below

The high tone is 1477Hz, the mid tone is 941Hz, and the low tone is 770Hz.

• Power on tone

This tone is output when the transceiver is turned on. (The high tone is output for 500ms.)

TK-373G

OPERATING FEATURES

• Alert tone

This tone is output when the transceiver is in TX inhibition for TOT, battery warning and PLL unlocked. It is output until the PTT button is released. (The 697Hz tone is output.)

• Busy Tone

In trunked mode the busy tone informs the user when the repeater cannot be used (System busy or TX inhibit Status).

• Intercept tone

This tone indicates that the transceiver is out of range. It indicates that the PTT button is pressed, and transmission has started, but the repeater cannot be connected and talking is not possible. It is output until the PTT button is released. (The mid tone and low tone are output alternately in 200ms intervals.)

• Delay tone

This tone is output when the PTT button is pressed and the repeater is accessed three times or more to indicate connection with the repeater is delayed. This tone is the same as the busy tone. (It is not output of CLEAT TO TALK has been set to YES.)

• Proceed tone

This tone is output when the PTT button is pressed, transmission starts, and the repeater is connected to indicate that the user can talk if the Clear-to-talk function has been set. (The high tone is output for 100ms.)

/ REALIGNMENT

REALIGNMENT

1. Modes

User mode

Panel test mode

PC mode

Firmware programming mode

Clone mode

Mode Function

User mode For normal use. Panel test mode Used by the dealer to check the

Panel tuning mode Used by the dealer to tune the radio. PC mode Used for communication between the

Data programming Used to read and write frequency data mode PC test mode Used to check the radio using the PC.

Firmware program- Used when changing the main ming mode program of the flash memory. Clone mode Used to transfer programming data

Panel tuning mode

Data programming mode

PC test mode

Checksum

fundamental characteristics.

radio and PC (IBM compatible).

and other features to and from the radio.

This feature is included in the FPU. See panel tuning.

from one radio to another.

PC tuning mode

• Free system ringback mode tone, system search mode

tone

This tone indicates that the transceiver is free system ringback mode or system search mode. (The low tone is output for 400ms.)

• Ringing tone

This tone indicates that the transceiver can use the repeater in free system ringback mode. (The mid tone and no tone are output eight cycles alternately in 50ms intervals.)

2. How to Enter Each Mode

Mode Operation

User mode Power ON Panel test mode PC mode Received commands from PC Panel tuning mode [Panel test mode]+[A] Firmware programming mode

Clone mode [Side1]+[5]+Power ON

[∞]+Power ON (Two seconds)

[Side1]+[Side2]+Power ON (Two seconds)

(Two seconds)

3. For the panel Test Mode

For the setting method, refer to ADJUSTMENT.

3-1. For the panel Tuning Mode

For the setting method, refer to ADJUSTMENT.

TK-373G

REALIGNMENT

4. Checksum

Executing this function, “-PC-” appears on the display of

TK-373G while calculating the checksum .

When the calculation is completed, the display returns to

normal and PC displays the checksum of the radio.

5. PC Mode

5-1. Preface

The TK-373G transceiver is programmed using a personal computer, a programming interface (KPG-22) and programming software (KPG-76D).

The programming software can be used with an IBM PC or compatible. Figure 1 shows the setup of an IBM PC for programming.

5-2. Connection procedure

1. Connect the TK-373G to the personal computer with the

interface cable.

2. When the POWER is switched on, user mode can be

entered immediately. When the PC sends a command, the radio enters PC mode. When data is transmitted from transceiver, the red LED blink. When data is received by the transceiver, the green LED blinks.

IBM-PC

Notes:

• The data stored in the personal computer must match model type when it is written into the flash memory.

• Change the TK-373G to PC mode, then attach the interface cable.

5-3. KPG-22 description

(PC programming interface cable: Option)

The KPG-22 is required to interface the TK-373G to the computer. It has a circuit in its D-subconnector (25-pin) case that converts the RS-232C logic level to the TTL level.

The KPG-22 connects the SP/MIC connector of the TK373G to the computers RS-232C serial port.

5-4. Programming software description

The KPG-76D programming disk is supplied in 3-1/2” disk format. The software on this disk allows a user to program the TK373G radios via a programming interface cable (KPG-22).

5-5. Programming with IBM PC

If data is transferred to the transceiver from an IBM PC with the KPG-76D, the destination data (basic radio information) for each set can be modified. Normally, it is not necessary to modify the destination data because their values are determined automatically when the frequency range (frequency type) is set.

The values should be modified only if necessary. Data can be programmed into the flash memory in RS-232C format via the universal connector.

RF Power meter or SSG

KPG-76D

6. Firmware Programming Mode

6-1. Preface

Flash memory is mounted on the TK-373G. This allows the TK-373G to be upgraded when new features are released in the future. (For details on how to obtain the firmware, contact Customer Service.)

6-2. Connection procedure

Connect the TK-373G to the personal computer (IBM PC or compatible) with the interface cable (KPG-22). (Connection is the same as in the PC Mode.)

6-3. Programming

1. Start up the programming software (FPRO.EXE).

2. Set the communications speed (normally, 57600 bps) and

communications port in the Setup item.

KPG-22

}

MIC

}

Tuning cable (E30-3216-05)

Gray Gray/Black

1.5D-XV Lead wire Gray-XV Shield wire

Fig. 1

3. Set the firmware to be updated by file name item.

4. Hold down the [Side1] and [Side2] switches on the TK-373G, and press the power switch. When the [Side1] and [Side2] switches are held down for two seconds, "PROG 576" appears on the display and the LED lights orange. When "PROG 576" is displayed, release the switches.

5. Check the connection between the TK-373G and the personal computer, and make sure that the TK-373G is in Program mode.

6. Click “write” button in the window. A window opens on the display to indicate the writing progress. When the TK-373G begins to receive data, the LED lights green.

7. When data is received successfully, a checksum appears on the display.

REALIGNMENT

TK-373G

8. If you want to continue programming other TK-373Gs, repeat steps 4 to 7.

Notes:

●

This mode cannot be entered if the Firmware Programming mode is set to Disable in the Programming software (KPG76D).

●

When programming the firmware, it is recommend to copy the data from the floppy disk to your hard disk before you update the radio firmware. Directly copying from the floppy disk to the radio may not work because the access speed is too slow.

6-4. Function

1. If you press the [Side2] switch while "PROG XXX" is displayed, the checksum is displayed. If you press the [Side2] switch again (while the checksum is displayed), "PROG XXX" is redisplayed.

2. A transmission speed can be selected by pressing the [Side1] switch while "PROG XXX" is displayed. 19200 bps: The LED flashes green and red alternately.

38400 bps: The LED flashes orange. 57600 bps: The LED lights orange.

Cloning cable parts No.

E30-3410-05 (TK-373G → TK-373G)

PTT/RXD

3.5

GND REMOTE/TXD

2.5

Cloning cable

Fig. 2

2.5

3.5

Note:

Normally, write in the high-speed mode.

7. Clone Mode

Programming data can be transferred from one radio to another by connecting them via their SP/MIC connectors. The operation is as follows (the transmit radio is the master and the receive radio is the slave).

1. Turn the master TK-373G power ON with the [Side1]+[5]

key held down. The TK-373G displays "

2. Power on the slave TK-373G.

3. Connect the cloning cable to the SP/MIC connectors on

the master and slave.

4. Press the [A] key on the master while the master displays

CLONE ". The data of the master is sent to the slave. While the slave is receiving the data, "-PC-" is displayed. When cloning of data is completed, the master displays "END", and the slave automatically operates in the User mode. The slave can then be operated by the same program as the master.

5. The other slave can be continuously cloned. When the [A] key on the master is pressed while the master displays "END", the master displays "

CLONE ". Carry out the

operation in steps 2 to 4.

Note: You can clone the programmed data between the

transceiver frequency version must be same. Use the new clonig cable for TK-372G/373G. You cannot use the old cloning cable for TK-360/370.

CLONE ".

TK-373G

DISASSEMBLY FOR REPAIR

Separating the case assembly from the chassis.

1. Remove the two knobs z and three round units x.

2. Remove the two screws

3. Expand the right and left sides of the bottom of the case assembly, lift the chassis, and remove it from the case assembly



Separating the chassis from the unit.

1. Remove the three screws .. Lift the unit (X54), and rise up the connecter lever in the

arrow with your finger

Remove the three hexagonal bosses

twelve screws

2. Remove the solder from the antenna terminal using a

soldering iron, then lift the unit off (X57).

, and remove the

Ω

❾

X54-

❾

❿

X57-

Antenna teminal

4. Taking cure not to cut the speaker lead b, open the chassis and case assembly, and pull the speaker lead with connector

CN3

➐

X57-

➐

CIRCUIT DESCRIPTION

Q14

Q17

D14

R78

R75

C263

C265

R80

D13

Q23

R98

R108

C133

CD1

R79

W/N

"H" : Wide "L" : Narrow

MXO

IFI

MXI

IFO

AFO

IC4 FM IF SYSTEM

Q22

W/N

C107

R74

C108

CF1

CF2

R81

QAD

R105

TK-373G

1. Frequency configuration

The receiver utilizes double conversion. The first IF is 49.95 MHz and the second IF is 450 kHz. The first local oscillator signal is supplied form the PLL circuit.

The PLL circuit in the transmitter generates the necessary frequencies. Fig. 1 shows the frequencies.

SYSTEM

50.4MHz

multiply

450kHz

PLL

VCO

ANT

TX/RX : 450~470MHz (K) TX/RX : 470~490MHz (K2)

ANT

AMP

MCF

49.95MHz

RX : 400.05~420.05MHz (K) RX : 420.05~440.05MHz (K2)

TX/RX : 450~470MHz (K) TX/RX : 470~490MHz (K2)

Fig. 1 Frequency configuration

2. Receiver

The frequency configuration of the receiver is shown in Fig. 2.

ANT

RF AMP Q301

BPF

ANT

CF1 : Wide

CF2 : Narrow

IC4

IF, MIX, DET

X3 multiply

IC14

HPF LPF HPF BEF

2nd Local

Q12

Fig. 2 Receiver section

BPF

AF AMP

IC16 (2/2)

TCXO

MIXER

Q19

1st Local

DE-

EMP

MCF XF1

PLL

VCO

AF AMP

IC15(2/2)

EXP

IF AMP

Q22

AF VOL

MUTE

AMP

TCXO

MIC

AMP

16.8MHz

AF AMP

IC11

MIC

3) IF Amplifier circuit

The first IF signal is passed through a four-pole monolithic crystal filter (XF1) to remove the adjacent channel signal. The filtered first IF signal is amplified by the first IF amplifier (Q22) and then applied to the lF system IC (IC4). The IF system IC provides a second mixer, second local oscillator, limiting amplifier, quadrature detector and RSSI (Received Signal Strength Indicator). The second mixer mixes the first IF signal with the 50.4MHz of the second local oscillator output (TCXO X3) and produces the second IF signal of 450kHz. The second IF signal is passed through the ceramic filter (CF1; Wide, CF2 ; Narrow) to remove the adjacent channel signal. The filtered second IF signal is amplified by the limiting amplifier and demodulated by the quadrature detector with the ceramic discriminator (CD1). The demodulated signal is routed to the audio circuit.

4) Wide/Narrow changeover circuit

Narrow and Wide settings can be made for each channel by switching the ceramic filters CF1 (Wide) and CF2 (Narrow). The WIDE (high level) and NARROW (low level) data is output from IC5 (OUTPUT EXPANDER), pin 4. When a WIDE (high level) data is received, Q14 turn off and Q17 turn on. When a NARROW (low level) data is received, Q14 turn on and Q17 turn off. D14 and D13 are switched to ceramic filters when a high/low level data is received. Q23 turns on/off with the Wide/Narrow data and the IC4

detector output level is changed to maintain a constant output level during wide or narrow signals.

1) Front end (RF AMP)

The signal coming form the antenna passes through the transmit/receive switching diode circuit, (D3,D7) passes through a BPF, and is amplified by the RF amplifier (Q301). The resulting signal passes through a BPF and goes to the mixer.

2) First mixer

The signal from the front end is mixed with the first local oscillator signal generated in the PLL circuit by Q19 to produce a first IF frequency of 49.95 MHz. The resulting signal passes through the XF1 MCF to cut the adjacent spurious and provide the optimum characteristics, such as adjacent frequency selectivity.

Fig. 3 Wide/Narrow changeover circuit

TK-373G

CIRCUIT DESCRIPTION

5) Audio amplifier circuit

The demodulated signal from IC4 is amplified by IC16 (2/2), high-pass filtered, low-pass filtered, high-pass filtered, bandeliminate filtered, and de-emphasized by IC14. The signal then goes through an AF amplifier IC15 (2/2), an AF volume control (VR2), and is routed to an audio power amplifier (IC11) where it is amplified and output to the speaker.

6) Squelch

Part of the AF signal from the IC enters the FM IC (IC4) again, and the noise component is amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level. The DC signal from the FM IC goes to the analog port of the microprocessor (IC13). IC13 determines whether to output sounds from the speaker by checking whether the input voltage is higher or lower than the preset value. To output sounds from the speaker, IC6 sends a high signal to the SP MUTE line and turns IC11 on through Q32,Q33,Q34 and Q30. (See Fig. 4)

7) Receive signaling

QT/DQT/LTR 300Hz and higher audio frequencies of the output signal from IF IC are cut by a low-pass filter (IC19). The resulting signal enters the microprocessor (IC13). IC13 determines whether the QT, DQT or LTR matches the preset value, and controls the SP MUTE and the speaker output sounds according to the squelch results.

IF AMP

FM IF IC4

DET

IC16 (2/2)

IF AMP

IC14

HPF LPF HPF BEF

DE-

EMP

EXP

IC15 (2/2)

AF AMP

MUTE

AF PA AMP

IC11

from the phase comparator in IC2. The output signal from the phase comparator is filtered through a low-pass filter and passed to the VCO to control the oscillator frequency.(See Fig. 5)

2) VCO

The operating frequency is generated by Q2 in transmit mode and Q10 in receive mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained from the phase comparator, to the varactor diodes (D2 and D4 in transmit mode and D9 and D11 in receive mode). The T/R pin is set high in receive mode causing Q7 and Q8 to turn Q2 off and turn Q10 on. The T/R pin is set low in transmit mode. The outputs from Q10 and Q2 are amplified by Q3 and sent to the buffer amplifiers.

D2, 4

LPF

D9, 11

PLL IC IC2

1/N

Q30

PLL DATA

REF OSC

1/M

Q2

TX VCO

Q10

RX VCO

10kHz/12.5kHz

PHASE

COMPARATOR

10kHz/12.5kHz

Q3

BUFF AMP

Q7, 8

T/R SW

Q37,38

CHARGE

PUMP

Q1

X2 multiply

Q4

RF AMP

IC19

LPF

93ANSQL

IC13

CPU

TOI

QT/DQT/LTR

Q36 SW

Fig. 4 AF Amplifier and Squelch

3. PLL frequency synthesizer

The PLL circuit generates the first local oscillator signal for

reception and the RF signal for transmission.

1) PLL

The VCO output is doubled by Q1 and then sent to the PLL IC (IC2). The frequency step of the PLL circuit is 10 or 12.5kHz. A 16.8MHz reference an oscillator signal is divided at IC2 by a fixed counter to produce oscillator (VCO) output signal which is buffer amplified by Q3 then divided in IC2 by a dual-module programmable counter. The divided signal is compared in phase with the 10 or 12.5kHz reference signal

Q32, 33, 34 SW

IC6

5RC

OUTPUT EXPANDER

MUTE

16.8MHz

Fig. 5 PLL circuit

3) Unlock Detector

If a pulse signal appears at the LD pin of IC2, an unlock condition occurs, and the DC voltage obtained form D1, R1, and C6 causes the voltage applied to the microprocessor to go low. When the microprocessor detects this condition, the transmitter is disabled, ignoring the push-to-talk switch input signal.(See Fig. 6)

IC2

PLL IC

IC13

MPU

Fig. 6 Unlock detector circuit

CIRCUIT DESCRIPTION

TK-373G

4. Transmitter System

1) Microphone amplifier

The signal from the microphone passes through the limiter circuit in D23, and through the high-pass filter, the ALC circuit, the low-pass filter, the high-pass filter, and preemphasis/IDC circuit IC14. When encoding DTMF, the mute switch (Q35) is turned OFF for muting the microphone input signal. The signal passes through the D/A converter (IC17) for the maximum deviation adjustment, and goes to the VCXO modulation input.

MIC

D23

LIMIT

IC14

HPF

IC17

ALC

D/A

Fig. 7 Microphone amplifier

2) Drive and Final amplifier

The signal from the T/R switch (D5 is on) is amplified by the pre-drive (Q5) and drive amplifier (Q6) to 50mW. The output of the drive amplifier is amplified by the RF power amplifier (IC1) to 4.0W (1W when the power is low). The RF power amplifier consists of two MOS FET stages. The output of the RF power amplifier is then passed through the harmonic filter (LPF) and antenna switch (D3 is on) and applied to the antenna terminal.

From

T/R SW

(D5)

Pre-DRIVE

APC

(IC13)

AMP

R56 R57 R58

Q6 IC1

DRIVE

AMP

Fig. 8 Drive and final amplifier and APC circuit

3) APC circuit

The APC circuit always monitors the current flowing through the RF power amplifier (IC1) and keeps a constant current. The voltage drop at R56, R57 and R58 is caused by the current flowing through the RF power amplifier and this voltage is applied to the differential amplifier IC3(1/2). IC3(2/2) compares the output voltage of IC3(1/2) with the

IC3

(1/2)

MUTE

Q35

18 19

COMP

LPF HPF IDC

VCO

LPF

QT/DQT/LTR

TOVCO 22

IC13 CPU

POWER AMP

VDD

IC3

(2/2)

TOTCXO

VGG

PRE

EMP

LPF

ANT

DTMF

(RX Audio)

DTMF

TCXO

reference voltage from IC13, and the output of IC3(2/2) controls the VGG of the RF power amplifier to make both voltages the same. The change of power high/low is carried out by the change of the reference voltage.

4) Encode signaling

(1) QT/DQT/LTR QT,DQT,LTR data of the TOTCXO Line is output form pin 20 of the CPU. The signal passes through a low-pass CR filter and goes to the TCXO(X1). The QT,DQT,LTR data of the TOVCO Line is output form pin 22 of the CPU. The signal passes through a low pass CR filter, mixes with the audio signal, and goes to the VCO

modulation input. TX deviation is adjusted by the CPU. (See fig.7)

(2) DTMF

High-speed data is output from pin 2 of the CPU. The signal passes through a low-pass CR filter, and provides a TX and SP out tone, and is then applied to the audio processor

LPF

AMP IC15

(2/2)

(IC14). The signal is mixed with the audio signal and goes to the VCO. TX deviation is adjusted by the CPU. (See fig.7)

5. Power supply

There are five 5V power supplies for the microprocessor: 5V,5M,5C,5R, and 5T. 5V for microprocessor is always output while the power is on. 5M is always output, but turns off when the power is turned off to prevent malfunction of the microprocessor. 5C is a common 5V. 5R is 5V for reception and output during reception. 5T is 5V for transmission and output during transmission.

6. Control Circuit

ANT

LPF

The control circuit consists of a microprocessor (IC13) and its peripheral circuits. It controls the TX-RX unit and transfers data to and from the display unit. IC13 mainly performs the following:

(1) Switching between transmission and reception by the

PTT signal input.

(2) Reading system, group, frequency, and program data

from the memory circuit. (3) Sending frequency program data to the PLL. (4) Controlling squelch on/off by the DC voltage from the

squelch circuit. (5) Controlling the audio mute circuit by the decode data

input. (6) Transmitting tone and encode data.

TK-373G

IC13

IC12

CPU

IC10

EEPROM

FLASH

CIRCUIT DESCRIPTION

1) Frequency shift circuit

The microprocessor (IC13) operates at a clock of

9.8304MHz. This oscillator has a circuit that shifts the frequency by BEAT SHIFT SW (Q31).

2) Memory circuit

Memory circuit consists of the CPU (IC13) and a flash memory (IC12). A flash memory has a capacity of 2M bits that contains the transceiver control program for the CPU and data such as transceiver channels and operating features. This program can be easily written from an external device. Data, such as DTMF memories and the operating status, are programmed into the EEPROM (IC10).

●

Flash Memory

Note : The flash memory holds data such as written with the

FPU (KPG-76D) and firmware program (User mode, Test mode, Tuning mode, etc.). This data must be rewritten when replacing the flash memory.

●

EEPROM

Note : The EEPROM stores tuning data (Deviation, Squelch,

etc.). Realign the transceiver after replacing the EEPROM.

Fig. 9 Memory circuit

3) Low battery warning

The battery voltage is monitored by the microprocessor (IC13). When the battery voltage falls below the voltage set by the Low Battery Warning adjustment, the LED flashes red to notify the operator that it is time to replace the battery. If the battery voltage falls even more (approx. 5.8V), a beep sounds and transmission is stopped.

Low battery warning

The red LED flashes during transmission.

The red LED flashes and a continuous beep sounds while PTT is pressed.

Battery condition

The battery voltage is low but the transceiver is still usable.

The battery voltage is low and the transceiver is not able to make calls.

8. CONTROL SYSTEM

Keys and channel selector circuit. The signal from keys and channel selector input to

microprocessor directly as shown in fig. 10.

Channel selector

PTT

KOUT3

KOUT1

KOUT2

KEYAD

KOUT0

CN1

KIN4

IC13 CPU

KIN3

KIN2

KIN1

KIN0

EN1

EN2

EN3

CN501

PTT SW

47k

100k

LAMP

MONI

Fig. 10 Control system

SEMICONDUCTOR DATA

TK-373G

LCD Driver : LC75823W (Display UNIT IC501)

■ Block diagram

COM1 COM2 COM3 S52 S51 S1

DD1

DD2

INH

OSC

■ Pin function

Pin No.

1-52 S1-S52 O -

53-55

COM1-COM4

56 VDD - -

57 INH I L INT=L : Turn off

58 VDD1 I - form outside. If 1/2 the bias is applied,

59 VDD2 I - form outside. If 1/2 the bias is applied,

60 VSS - 61 OSC I/O - Oscillation terminal

62 CE I H

63 CL I

64 DI I -

COMMON

DRIVER

CLOCK

GENERA TOR

Name I/O

O-

LATCH & DRIVER

SHIFT REGISTER

ADDRESS

DETECTOR

VDDCECLDI VSS

Active

Segment output for displaying data transferred form serial data. Common drive output. Frame frequency fo=(fosc/384)Hz

The display to turn off

INT=H : Turn on Apply 2/3 the LCD drive bias voltage

connect to VDD2. Apply 1/3 the LCD drive bias voltage

connect to VDD1.

Chip enable. Serial data transfer terminal. Connected to the microprocessor. Synchronizing clock. Serial data transfer terminal. Connected to the microprocessor. Trnsfer data. Serial data transfer terminal. Connected to the microprocessor.

Function

Microprocessor : 30622M4A-410GP (TX-RX UNIT : IC13)

■ Pin function

Pin Port

No. Name

1 APC O TX:Automatic Power Control data output 2 DTMF O DTMF BEEP output 3 2TN - Not used 4

DTMSTD

5 SIM I Destination select 6 BYTE I +5V(5M) 7 CNVSS I GND 8 AFSTB O Base Band IC strobe/rest output

9 AFFCLK O Base Band IC frame rest/system reset output 10 RESET I Reset 11 XOUT O Clock output 12 VSS - GND 13 XIN I Clock input 14 VCC - +5V 15 NC I NC 16 EN2 I Encoder pulse input 2 17 AUX3 I/O Not used 18 INT I Battery voltage monitor input Low battery:L 19 OE I Not used 20

TOTCXO

EEPDAT 22 TOVCO O QT/DQT/LTR modulation output(VCO) 23 AUX1 I 24 SFTSTB O Shift register strobe output 25 EN1 O Encoder pulse input 1 26 DACS I Chip select output(Max dev) Select:L 27 EN3 I Not used 28 NC O NC 29 AUX4 O Not used 30 AUX2 I/O Not used 31 KOUT3 O Key scan output 3 32 KOUT2 O Key scan output 2 33 TXD O Serial data 34

PTT/RXD 35 KOUT1 O Key scan output 1 36 KOUT0 O Key scan output 0 37 RDY - Not used 38 ALE O Not used 39 HOLD I Not used 40 HLDA O Not used 41 BLCK O Not used 42 RDY O READ signal 43 BHE O Not used 44 WR O WRITE signal 45 LCDCS O LCD chip enable output

CNTDAT

CNTCLK 48 CSO - Chip select signal

I/O Function

I Not used

I QT/DQT/LTR modulation output(TCXO)

I/O EEPROM data input/output

I PTT on: L/Serial data

Common data output

(EEPROM,LCD,SHIFT REG,1bit D/A MODEM) Common clock output

(EEPROM,LCD,SHIFT REG,1bit D/A MODEM)

TK-373G

SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS

Pin Port No. Name

49 A19 - Not used

50-59

A18-A9 - Flash memory address bus 60 VCC - +5V 61 A8 - Flash memory address bus 62 VSS - GND

63-70

A7-A0 - Flash memory address bus

71-75

KIN0-KIN4 76 PLLUL O PLL unlock detect input unlock: L 77 PLLSTB O PLL strobe output Latch: L 78 SAVE I Not used

79-86

D7-D0 - Flash memory data bus 87 KEYAD I MONI LAMP key input 88 BATT I Battery voltage input 89 RFDAT O PLL data output 90 RFCLK O PLL clock output 91 NC - NC 92 RSSQL I Receive signal strength indicator input 93

ANLSQL 94 AVSS - GND 95 TOI I QT/DQT/LTR signal input 96 VREF - Reference voltage input 97 AVCC - GND 98 DTMPD O Not used 99

DTMCLK

100

DTMDAT

I/O Function

I Key scan input

I Analog squelch level input

O Not used

I Not used

Shift register 1:BU4094BCFV(IC5)

■ Pin function

Port I/O Function

No.

4 W/N O Wide/Narrow SW Narrow: L 5 MUTE O RX audio/MIC mute Mute: L 6NC O NC 7 LED0 O RED LED LED lights: H

BSHIFT 12 REG2 O Base Band IC inter register select 2 13 REG1 O Base Band IC inter register select 1 14 LED1 O GREEN LED LED lights: H

O Beat Shift Shift on: H

Shift register 2:BU4094BCFV(IC6)

■ Pin function

Port I/O Function

No.

4 5MC O 5MC control Power on: L 5 5RC O 5R control Power on: L 6 5TC O 5T control Power on: H 7

SPMUTE 11 AUX6 O Option board port 6 Auxiliary Output 12 AUX5 O Option board port 5 Link complete 13

LCDBLK 14 RX O RX/TX VCO SW RX: L

O AF amp power supply control Power on: H

O LCD back light Back light on: L

DESCRIPTION OF COMPONENTS

DISPLAY UNIT (X54-3250-11)

Ref. No.

IC501 IC LCD driver

Q501 Transistor Current driver / LCD back light LED AVR Q502 Transistor DC switch D505 Diode Speed up D506 LED LCD back light D507 Diode Voltage reference D511 LED LCD back light

D515,516

TX-RX UNIT (X57-650X-XX)

Ref. No.

IC5,6 IC Shift register / Output expander

IC10 IC EEPROM IC11 IC AF Power amplifier IC12 IC Flash memory IC13 IC Microprocessor

IC14 IC Audio processor IC15(1/2) IC IC15(2/2) IC AF Pre amplifier IC16(1/2) IC Bias buffer IC16(2/2) IC AF Buffer amplifier

IC17 IC D/A converter (TX AF adjustment)

IC19 IC Active filter / For LSD in

Q4,5 Transistor RF amplifier

Q8,Q9 Transistor DC switch

Q20,Q21 Transistor DC switch / 5T, Save

Use/Function

LED LED /Key pad back light

Use/Function

IC1 IC RF Power Module IC2 IC PLL system IC3 IC Comparator (APC) IC4 IC FM IF system

IC7 IC Voltage regulator/ 5V IC8 IC Voltage detector / Reset IC9 IC Voltage detector / INT

Q1 Transistor PLL IC fin amplifier Q2 Transistor VCO oscillation (TX) Q3 Transistor RF Buffer amplifier

Q6 Transistor RF amplifier / TX driver Q7 FET DC switch

Q10 FET VCO oscillation (RX) Q11 Transistor Ripple filter Q12 Transistor Tripler Q13 Transistor DC switch Q14 Transistor 2nd IF W/N switch sets to on when Narrow Q15 Transistor DC switch Q16 Transistor DC switch / 5R Q17 Transistor 2nd IF W/N switch sets to on when Wide Q18 Transistor DC switch / 5T, Save Q19 FET Mixer

Q22 Transistor IF amplifier Q23 Transistor DC switch Q24 Transistor DC switch / LED (Red) Q25 Transistor DC switch / LED (Green)

Operation/Condition

/ W/N audio amplitude adjust

DESCRIPTION OF COMPONENTS

TK-373G

Ref. No.

Q26 Transistor DC switch / Squelch Q27 FET DC switch / 5T, Save Q28 Transistor DC switch / 5M Q30 FET SP Mute switch Q31 Transistor Clock frequency shift

Q32~34 Transistor DC switch / SP Mute Q35(1/2) FET Mute switch / MIC line mute Q35(2/2) FET DC switch

Q36 FET Mute switch

Q37,38

Q39 FET Mute switch/DET line Mute

Q301 FET RF amplifier

D10 Diode TX/RX Switch D11 D12

D13,14

D15 Diode Reverse protection D17 Diode Model check D18 LED LED/ Red, Green D21 Diode Reverse protection D22 Diode Reverse protection D23 Diode Voltage clamp D27 Diode Discharge speed up D28 Diode Voltage pull up D29 Diode Gain control

Use/Function

Transistor PLL charge pump

D1 Diode Unlock detect

Variable

capacitance diode

D3 Diode ANT switch

Variable

capacitance diode

D5 Diode TX/RX switch

Variable

capacitance diode

D7 Diode ANT switch D8 Zener Diode Overload protection

Variable

capacitance diode

Variable capacitance diode

Diode Current steering Diode RF switch (2nd IF wide/narrow)

Frequency control

TX modulation

Frequency control

Operation/Condition

TK-373G

∗ 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.

TK-373G

New

Address

K : TK-373G K K2 : TK-373G K2

Ref. No.

1 1A A02-3568-33 CABINET ASSY 2 3B A82-0036-02 REAR PANEL

3 2C B09-0351-03 CAP(SP/MIC) 4 2B B11-1220-03 ILLUMINATION GUIDE 52B∗ B38-0867-05 LCD 62D∗ B62-1576-00 INSTRUCTION MANUAL 72D∗ B72-2026-04 MODEL NAME PLATE K

72D∗ B72-2027-04 MODEL NAME PLATE K2

8 3B E04-0413-05 RF COAXIAL RECEPTACLE(SMA) 9 3A E23-1183-04 RELAY TERMINAL(BATT-) 10 2A E23-1184-04 RELAY TERMINAL(BATT+) 11 2B E29-1177-04 INTER CONNECTOR(LCD) 12 2A E37-0805-05 FLAT CABLE(TX/RX-DISP)

13 1B E37-0829-05 SPEAKER CORD 14 3A E37-0830-05 FLAT CABLE(PTT)

15 2B F10-2302-04 SHIELDING COVER(POWER MODULE) 16 2A F10-2304-03 SHIELDING COVER(TX/RX UNIT) 17 2A F20-3307-04 INSULATING SHEET(LCD) 18 2A F20-3308-04 INSULATING SHEET(DISP/CHASSIS)

19 1A G01-0881-04 COIL SPRING(BATT RELEASE) 20 1B G10-1232-04 FIBROUS SHEET(SPEAKER) 21 3B G13-1744-14 CUSHION(CHASSIS-BATT) 22 2B G13-1783-04 CUSHION(POWER MODULE COVER)

- G13-1834-04 CUSHION(BATT TERMINAL + -)

23 1B G53-0882-03 PACKING(SPEAKER/ECM) 24 3A G53-0883-04 PACKING(BATT TERMINAL+) 25 1A G53-0891-04 PACKING(PTT KNOB) 26 3B G53-1530-02 PACKING 27 2B G53-1531-03 PACKING(SP/MICJACK)

28 1C,2C H12-1487-02 PACKING FIXTURE 29 1C H25-0085-04 PROTECTION BAG 30 2C H25-2012-04 PROTECTION BAG 31 3D ∗ H52-1859-12 ITEM CARTON CASE

32 1A J19-1572-04 HOLDER(BATT RELEASE) 33 2B J19-5352-03 HOLDER(VOL/ENC) 34 2A J19-5353-14 HOLDER(BATT TERMINAL+) 35 2C J21-4493-04 SP/MIC HOLDER 36 2B J21-8377-03 HARDWARE FIXTURE(LCD)

37 1B J21-8378-04 HARDWARE FIXTURE(SPEAKER) 38 2C J29-0658-05 BELT HOOK 39 2A J32-0925-04 HEXAGON BOSS

40 1B K29-5331-03 KNOB(ENCODER) 41 1B K29-5332-03 KNOB(VOLUME) 42 1A K29-5333-13 BUTTON KNOB(MONI/LAMP) 43 1A K29-5334-13 BUTTON KNOB(PTT) 44 1A K29-5337-03 LEVER KNOB(BATTRELEASE)

45 1A ∗ K29-9142-02 KEY TOP(4 KEYS)

A 3B N09-2319-05 BINDING HEAD SCREW(SMA)

Parts No. Description

parts

TK-373G

PARTS LIST

Scandinavia

PX (Far East, Hawaii)

AAFES (Europe)

Destination Destination

B 2A N09-2331-05 SPECIAL SCREW(BATT TERMINAL+) C 1B N14-0582-14 CIRCULAR NUT(SMA) D 1B N14-0583-04 CIRCULAR NUT(VOL/ENC) E 3A N30-2606-46 PAN HEAD MACHINE SCREW F 2A N39-2030-46 PAN HEAD MACHINE SCREW

G 2B N67-2005-46 H I 3A N79-2030-46 PAN HEAD TAPTITE SCREW J 2A,2B N83-2005-46 PAN HEAD TAPTITE SCREW K 2C N99-2012-05 SCREW SET

VR2 - R31-0628-15 VARIABLE RESISTOR

SP 1B T07-0326-05 SPEAKER

S1 - W02-1969-15 ENCODER

D506 B30-2210-05 LED(TLY) D511 B30-2210-05 LED(TLY) D515,516 B30-2171-05 LED(D)

C501-509 CC73GCH1H221J CHIP C 220PF J C513 CK73GB1H102K CHIP C 1000PF K C515,516 CC73GCH1H101J CHIP C 100PF J

CN501 E40-6012-05 FLAT CABLE CONNECTOR

L501,502 L92-0138-05 FERRITE CHIP

CP501 R90-0748-05 MULTI-COMP 47K X4 CP502,503 R90-0724-05 MULTI-COMP 1K X4 R501-510 RK73GB1J102J CHIP R 1.0K J 1/16W R511 R92-1252-05 CHIP R 0OHM J 1/16W R512 RK73GB1J102J CHIP R 1.0K J 1/16W

R513-515 RK73GB1J103J CHIP R 10K J 1/16W R516 RK73GB1J473J CHIP R 47K J 1/16W R517 RK73GB1J103J CHIP R 10K J 1/16W R518 RK73GB1J471J CHIP R 470 J 1/16W R522 RK73GB1J102J CHIP R 1.0K J 1/16W

R523 RK73GB1J473J CHIP R 47K J 1/16W R524 RK73GB1J471J CHIP R 470 J 1/16W

D501-504 MA2S111 DIODE D505 1SS373 DIODE D507 MA2S111 DIODE IC501 LC75823W MOS IC Q501 2SB1132(Q,R) TRANSISTOR

Q502 2SC4617(S) TRANSISTOR

Ref. No.

Address

1B,3A,3B

TX-RX UNIT (X57-6500-XX)

D18 B30-2019-05 LED(RE/GR)

C1 CC73HCH1H100C CHIP C 10PF C C3-5 CC73GCH1H010B CHIP C 1.0PF B K2 C4,5 CC73GCH1H010B CHIP C 1.0PF B K C6 CK73HB1A104K CHIP C 0.10UF K C8 CC73GCH1H030B CHIP C 3.0PF B

USA

England

Australia

New parts

N78-2045-46 PAN HEAD TAPTITE SCREW

Canada

Europe

Other Areas

Parts No. Description

PAN HEAD SEMS SCREW(POWER MODULE)

DISPLAY UNIT (X54-3250-11)

-10:TK-373G K -11:TK-373G K2

PARTS LIST

New

Ref. No.

C9 CK73HB1H471K CHIP C 470PF K C10 CC73GCH1H060B CHIP C 6.0PF B K2 C10 CC73GCH1H080B CHIP C 8.0PF B K C11 CC73GCH1H080D CHIP C 8.0PF D C12 CC73GCH1H070D CHIP C 7.0PF D

Address

Parts No. Description

parts

Destination Destination

TK-373G

TX-RX UNIT (X57-6500-XX)

New

Ref. No.

C75 CK73GB1H471K CHIP C 470PF K C76 CK73GB1H102K CHIP C 1000PF K C78 CC73GCH1H470J CHIP C 47PF J C81 CC73GCH1H010C CHIP C 1.0PF C C82 CK73GB1H102K CHIP C 1000PF K K

Address

Parts No. Description

parts

C13 CK73GB1H471K CHIP C 470PF K C14 CC73GCH1H0R5B CHIP C 0.5PF B C15 CC73GCH1H101J CHIP C 100PF J C16 CC73GCH1H050B CHIP C 5.0PF B K2 C16 CC73GCH1H060B CHIP C 6.0PF B K

C17 CC73GCH1H040B CHIP C 4.0PF B K C17,18 CC73GCH1H040B CHIP C 4.0PF B K2 C18 CC73GCH1H060B CHIP C 6.0PF B K C20 CC73GCH1H020B CHIP C 2.0PF B K2 C20 CC73GCH1H030B CHIP C 3.0PF B K

C22 CC73GCH1H101J CHIP C 100PF J C23 CC73GCH1H020B CHIP C 2.0PF B K C23 CC73GCH1H050B CHIP C 5.0PF B K2 C24 CC73GCH1H030B CHIP C 3.0PF B K C24 CC73GCH1H080B CHIP C 8.0PF B K2

C25 CC73GCH1H040B CHIP C 4.0PF B K C25 CC73GCH1H090B CHIP C 9.0PF B K2 C26 CC73GCH1H1R5B CHIP C 1.5PF B C27 CC73GCH1H0R5B CHIP C 0.5PF B C28 CC73GCH1H060D CHIP C 6.0PF D

C29 CC73GCH1H030B CHIP C 3.0PF B C30 CC73GCH1H060D CHIP C 6.0PF D C31 C92-0662-05 CHIP-TAN 15UF 6.3WV C32 CK73HB1A104K CHIP C 0.10UF K C33 CC73GCH1H050B CHIP C 5.0PF B K2

C33 CC73GCH1H060B CHIP C 6.0PF B K C35-41 CK73GB1H471K CHIP C 470PF K C42,43 CC73GCH1H101J CHIP C 100PF J C44 CC73HCH1H101J CHIP C 100PF J C45 CK73GB1H471K CHIP C 470PF K

C84,85 CK73GB1H471K CHIP C 470PF K C86,87 CC73HCH1H100C CHIP C 10PF C C88 CC73GCH1H040B CHIP C 4.0PF B K C88 CC73GCH1H050B CHIP C 5.0PF B K2 C89 CC73GCH1H070B CHIP C 7.0PF B

C90 C92-0560-05 CHIP-TAN 10UF 6.3WV C94 C92-0560-05 CHIP-TAN 10UF 6.3WV C95,96 CK73GB1H471K CHIP C 470PF K C98 C92-0560-05 CHIP-TAN 10UF 6.3WV C99 CK73GB1C104K CHIP C 0.10UF K

C100 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C101 CK73GB1H471K CHIP C 470PF K C104 CK73GB1H471K CHIP C 470PF K C107,108 CK73GB1C104K CHIP C 0.10UF K C109 C92-0662-05 CHIP-TAN 15UF 6.3WV

C110 CK73GB1H103K CHIP C 0.010UF K C111 CK73GB1H471K CHIP C 470PF K C112 CC73GCH1H050B CHIP C 5.0PF B C113 CK73GB1H471K CHIP C 470PF K C114 CK73GB1H391K CHIP C 390PF K

C115 CK73GB1C104K CHIP C 0.10UF K C118 CK73GB1H471K CHIP C 470PF K C119 CK73FB1A105K CHIP C 1.0UF K C120,121 CK73GB1H471K CHIP C 470PF K C122 CK73FB1A105K CHIP C 1.0UF K

C123 CK73GB1H391K CHIP C 390PF K C124 CC73GCH1H390J CHIP C 39PF J K C124 CC73GCH1H560J CHIP C 56PF J K2 C125,126 CK73GB1H103K CHIP C 0.010UF K C127 CC73GCH1H010B CHIP C 1.0PF B

C48,49 C92-0001-05 CHIP-C 0.1UF 35WV C51 C92-0697-05 CHIP-TAN 3.3UF 16WV C52 CC73GCH1H030B CHIP C 3.0PF B K2 C52 CC73GCH1H040B CHIP C 4.0PF B K C53 CK73GB1H471K CHIP C 470PF K

C54 CK73FB1C474K CHIP C 0.47UF K C55 CK73GB1H471K CHIP C 470PF K C57 CK73FB1C474K CHIP C 0.47UF K C58 CK73GB1H103K CHIP C 0.010UF K C60 CK73GB1H103K CHIP C 0.010UF K

C62 CC73GCH1H270J CHIP C 27PF J K2 C62 CC73GCH1H560J CHIP C 56PF J K C63 CC73GCH1H070B CHIP C 7.0PF B C64 CC73GCH1H010B CHIP C 1.0PF B C68 C92-0565-05 CHIP-TAN 6.8UF 10WV

C70 CK73GB1H103K CHIP C 0.010UF K C71 CC73GCH1H101J CHIP C 100PF J C72 CC73GCH1H180G CHIP C 18PF G K2 C72 CC73GCH1H330G CHIP C 33PF G K C73 CK73GB1H471K CHIP C 470PF K

C74 CK73FB1E104K CHIP C 0.10UF K

K : TK-373G K K2 : TK-373G K2

C128 CC73GCH1H120J CHIP C 12PF J C130 CK73GB1H471K CHIP C 470PF K C131 CC73GCH1H100D CHIP C 10PF D C132 CK73GB1H103K CHIP C 0.010UF K C133 CC73GCH1H820J CHIP C 82PF J

C134 CK73GB1H471K CHIP C 470PF K C135 CK73GB1C104K CHIP C 0.10UF K C136 CC73GCH1H040B CHIP C 4.0PF B C137 CK73GB1H471K CHIP C 470PF K C138 CK73GB1C104K CHIP C 0.10UF K

C139 CC73GCH1H181J CHIP C 180PF J C140 CK73GB1H103K CHIP C 0.010UF K C141 CK73GB1C104K CHIP C 0.10UF K C142 CK73FB1A105K CHIP C 1.0UF K C143,144 CK73GB1H471K CHIP C 470PF K

C146,147 CK73GB1C104K CHIP C 0.10UF K C148 CK73GB1H103K CHIP C 0.010UF K C150 CK73GB1H102K CHIP C 1000PF K C151-153 CK73GB1H471K CHIP C 470PF K C155 C92-0662-05 CHIP-TAN 15UF 6.3WV

C156,157 CK73GB1H471K CHIP C 470PF K

TK-373G

PARTS LIST

TX-RX UNIT (X57-6500-XX)

New

Ref. No.

C158 CK73FB1A105K CHIP C 1.0UF K C159 CK73GB1H471K CHIP C 470PF K C161 CK73GB1H471K CHIP C 470PF K C162 CK73GB1H103K CHIP C 0.010UF K C163,164 CK73GB1H471K CHIP C 470PF K

C165 CK73GB1H103K CHIP C 0.010UF K C166 CK73FF1E104Z CHIP C 0.10UF Z C167 CK73GB1H471K CHIP C 470PF K C170,171 CK73GB1H471K CHIP C 470PF K C173 C92-0567-05 CHIP-TAN 68UF 6.3WV

C174 CK73GB1H471K CHIP C 470PF K C176 CC73GCH1H101J CHIP C 100PF J C177 CK73GB1C473K CHIP C 0.047UF K C178 C92-0560-05 CHIP-TAN 10UF 6.3WV C179 CK73GB1C104K CHIP C 0.10UF K

C180 CK73GB1H103K CHIP C 0.010UF K C181 CK73GB1C393K CHIP C 0.039UF K C182 CK73GB1H102K CHIP C 1000PF K C183,184 CK73GB1C104K CHIP C 0.10UF K C185 CC73GCH1H180J CHIP C 18PF J

C186,187 CK73GB1C104K CHIP C 0.10UF K C189 CK73GB1H103K CHIP C 0.010UF K C190,191 CK73GB1C104K CHIP C 0.10UF K C192,193 CC73GCH1H300J CHIP C 30PF J C194 C92-0507-05 CHIP-TAN 4.7UF 6.3WV

Address

Parts No. Description

parts

TX-RX UNIT (X57-588X-XX)

New

Destination Destination

Ref. No.

C238 CK73GB1H392K CHIP C 3900PF K C239 CK73GB1C104K CHIP C 0.10UF K C240 CK73GB1H272J CHIP C 2700PF J C241 CK73GB1H471K CHIP C 470PF K C242 C92-0507-05 CHIP-TAN 4.7UF 6.3WV

C243 CK73FB1A105K CHIP C 1.0UF K C244 C92-0560-05 CHIP-TAN 10UF 6.3WV C245 CK73GB1H471K CHIP C 470PF K C246 CK73FB1A105K CHIP C 1.0UF K C247 CK73GB1E123K CHIP C 0.012UF K

C249 CK73GB1H222K CHIP C 2200PF K C250 CK73GB1C683K CHIP C 0.068UF K C253,254 CK73GB1H103K CHIP C 0.010UF K C255 CK73GB1H183K CHIP C 0.018UF K C257,258 CK73GB1E153K CHIP C 0.015UF K

C259 CC73GCH1H121J CHIP C 120PF J C260 CK73GB1H183K CHIP C 0.018UF K C261 CK73GB1E153K CHIP C 0.015UF K C262 CK73GB1H102K CHIP C 1000PF K C263 CK73GB1C104K CHIP C 0.10UF K

C265,266 CK73GB1C104K CHIP C 0.10UF K C268 CK73GB1H102K CHIP C 1000PF K C271 CK73GB1H102K CHIP C 1000PF K C272 CK73HB1H471K CHIP C 470PF K C273-276 CK73GB1H471K CHIP C 470PF K

Address

Parts No. Description

parts

C196 CC73GCH1H101J CHIP C 100PF J C198,199 CK73GB1H103K CHIP C 0.010UF K C200 CK73GB1A224K CHIP C 0.22UF K C201 CK73GB1H103K CHIP C 0.010UF K C202,203 CK73GB1C104K CHIP C 0.10UF K

C204 CK73FB1C474K CHIP C 0.47UF K C205 CK73GB1H103K CHIP C 0.010UF K C206-208 CK73GB1C104K CHIP C 0.10UF K C209 CK73GB1H332K CHIP C 3300PF K C210 CK73GB1H102K CHIP C 1000PF K

C211 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C212 CK73GB1H122K CHIP C 1200PF K C213 CK73GB1H103K CHIP C 0.010UF K C215 CK73GB1C104K CHIP C 0.10UF K C216 CK73GB1H332K CHIP C 3300PF K

C217 CK73GB1E153K CHIP C 0.015UF K C218 CK73FB1H563K CHIP C 0.056UF K C219 CK73GB1C104K CHIP C 0.10UF K C221 CK73GB1H471K CHIP C 470PF K C222 CK73GB1H103K CHIP C 0.010UF K

C223 C92-0560-05 CHIP-TAN 10UF 6.3WV C224 CK73GB1H122K CHIP C 1200PF K C225 CC73GCH1H101J CHIP C 100PF J C226,227 CK73GB1H562J CHIP C 5600PF J C229 CK73FB1H471K CHIP C 470PF K

C230 CK73GB1H562J CHIP C 5600PF J C231 C92-0507-05 CHIP-TAN 4.7UF 6.3WV C232 CK73GB1H103K CHIP C 0.010UF K C233 CC73GCH1H151J CHIP C 150PF J C234,235 CK73GB1H272J CHIP C 2700PF J

C236 CK73GB1C104K CHIP C 0.10UF K

C277 CC73GCH1H680J CHIP C 68PF J C278 CK73GB1C104K CHIP C 0.10UF K C302 CC73GCH1H010B CHIP C 1.0PF B C303 CC73GCH1H030B CHIP C 3.0PF B C304 CK73GB1H471K CHIP C 470PF K

C305,306 CC73GCH1H0R5B CHIP C 0.5PF B C307 CC73GCH1H220J CHIP C 22PF J C309 CC73GCH1H100D CHIP C 10PF D K2 C309 CK73GB1H471K CHIP C 470PF K K C311 CC73GCH1H020B CHIP C 2.0PF B K2

C311 CC73GCH1H030B CHIP C 3.0PF B K C312 CC73GCH1H010B CHIP C 1.0PF B K2 C312 CC73GCH1H020B CHIP C 2.0PF B K C314 CC73GCH1H020B CHIP C 2.0PF B K2 C314 CC73GCH1H030B CHIP C 3.0PF B K

C316,317 CK73GB1H471K CHIP C 470PF K C325-327 CK73GB1H471K CHIP C 470PF K C333 CC73GCH1H330J CHIP C 33PF J K2 C333 CC73GCH1H390J CHIP C 39PF J K C334 CC73HCH1H040B CHIP C 4.0PF B

C335 CC73GCH1H050B CHIP C 5.0PF B K2 C336 CK73FB1A105K CHIP C 1.0UF K TC1,2 C05-0384-05 CERAMIC TRIMMER CAP(10PF) TC301,302 C05-0383-05 CERAMIC TRIMMER CAP(6PF) TC303 C05-0384-05 CERAMIC TRIMMER CAP(10PF)

CN1 E40-6012-05 FLAT CABLE CONNECTOR CN3 E40-5662-05 PIN ASSY SOCKET J1 E11-0457-05 PHONE JACK

F1 F53-0130-05 FUSE F1 F53-0217-05 FUSE

K : TK-373G K K2 : TK-373G K2

New

Ref. No.

CD1 L79-1794-05 TUNING COIL CF1 L72-0968-05 CERAMIC FILTER CF2 L72-0969-05 CERAMIC FILTER L1 L40-3963-92 SMALL FIXED INDUCTOR(3.9NH) L2 L92-0138-05 FERRITE CHIP

Address

Parts No. Description

parts

TK-373G

PARTS LIST

TX-RX UNIT (X57-6500-XX)

New

Destination Destination

Ref. No.

CP20 RK75HA1J472J CHIP-COM 4.7K J 1/16W R1 RK73HB1J124J CHIP R 120K J 1/16W R2 RK73HB1J683J CHIP R 68K J 1/16W R3 RK73GB1J392J CHIP R 3.9K J 1/16W K R3 RK73GB1J472J CHIP R 4.7K J 1/16W K2

Address

Parts No. Description

parts

L3 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH) L4 L33-0744-05 SMALL FIXED INDUCTOR L5-7 L34-4546-05 AIR-CORE COIL K2 L5-7 L34-4547-05 AIR-CORE COIL K L8 L40-1575-92 SMALL FIXED INDUCTOR(15NH)

L9 L40-1075-92 SMALL FIXED INDUCTOR(10NH/1608) L10 L40-1095-34 SMALL FIXED INDUCTOR(1UH) L11 L40-1092-81 SMALL FIXED INDUCTOR L12 L40-2702-86 SMALL FIXED INDUCTOR(27UH) K2 L12 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH) K

L14 L40-1875-92 SMALL FIXED INDUCTOR(18NH) L15 L40-1085-92 SMALL FIXED INDUCTOR(100NH) L17 L34-4546-05 AIR-CORE COIL K2 L17 L34-4547-05 AIR-CORE COIL K L18-20 L92-0138-05 FERRITE CHIP

L21 L40-1875-92 SMALL FIXED INDUCTOR(18NH) L22 ∗ L40-1885-92 SMALL FIXED INDUCTOR(180NH) L23 L92-0138-05 FERRITE CHIP L24 L40-5681-86 SMALL FIXED INDUCTOR(0.56UH) L25 L40-2785-92 SMALL FIXED INDUCTOR(270NH)

L26 L33-0744-05 SMALL FIXED INDUCTOR L27 L92-0149-05 FERRITE CHIP L30 L40-2702-86 SMALL FIXED INDUCTOR(27UH) L31 L40-2785-92 SMALL FIXED INDUCTOR(270NH) L32 L40-1005-85 SMALL FIXED INDUCTOR(10UH)

L35 L40-2275-92 SMALL FIXED INDUCTOR(22NH) L36 L40-1085-85 SMALL FIXED INDUCTOR(0.10UH) L37 L40-6885-85 SMALL FIXED INDUCTOR(0.68UH) L38 L92-0138-05 FERRITE CHIP L39 L92-0149-05 FERRITE CHIP

R4 RK73HB1J101J CHIP R 100 J 1/16W R5 RK73GB1J152J CHIP R 1.5K J 1/16W R6 R92-1252-05 CHIP R 0OHM J 1/16W R7 RK73HB1J100J CHIP R 10 J 1/16W R8 RK73HB1J102J CHIP R 1.0K J 1/16W

R9 RK73GB1J332J CHIP R 3.3K J 1/16W R10 RK73GB1J331J CHIP R 330 J 1/16W R13 RK73GB1J472J CHIP R 4.7K J 1/16W R14 RK73GB1J332J CHIP R 3.3K J 1/16W R16 RK73GB1J391J CHIP R 390 J 1/16W

R17 RK73HB1J103J CHIP R 10K J 1/16W R18 RK73GB1J683J CHIP R 68K J 1/16W R19 RK73GB1J332J CHIP R 3.3K J 1/16W R20 RK73GB1J122J CHIP R 1.2K J 1/16W R21 RK73GB1J331J CHIP R 330 J 1/16W

R22 RK73HB1J561J CHIP R 560 J 1/16W R23 RK73HB1J681J CHIP R 680 J 1/16W R24 RK73GB1J682J CHIP R 6.8K J 1/16W R25 RK73GB1J470J CHIP R 47 J 1/16W R26 RK73GB1J561J CHIP R 560 J 1/16W

R27 RK73GB1J390J CHIP R 39 J 1/16W R28,29 RK73GB1J271J CHIP R 270 J 1/16W R30 RK73HB1J391J CHIP R 390 J 1/16W R31 RK73GB1J101J CHIP R 100 J 1/16W R33 RK73GB1J101J CHIP R 100 J 1/16W

R34 RK73GB1J473J CHIP R 47K J 1/16W R35 RK73GB1J104J CHIP R 100K J 1/16W R36 RK73GB1J473J CHIP R 47K J 1/16W R37 RK73GB1J392J CHIP R 3.9K J 1/16W R38 RK73GB1J101J CHIP R 100 J 1/16W

L40,41 L92-0138-05 FERRITE CHIP L42 L92-0131-05 FERRITE CHIP L43,44 L92-0138-05 FERRITE CHIP L47 ∗ L40-3363-92 SMALL FIXED INDUCTOR(3.3NH) L302 L34-4546-05 AIR-CORE COIL

L303 L40-2785-92 SMALL FIXED INDUCTOR(270NH) L304-306 L34-4546-05 AIR-CORE COIL L307 L40-4785-85 SMALL FIXED INDUCTOR(0.47UH) L308-310 L34-4546-05 AIR-CORE COIL L311 L40-3375-92 SMALL FIXED INDUCTOR(33NH) K2

L312 L40-1575-92 SMALL FIXED INDUCTOR(15NH) K2 L312 L40-2775-92 SMALL FIXED INDUCTOR(27NH) K X1 L77-1833-05 TCXO(16.8MHZ) X2 L78-0479-05 RESONATOR(3.58MHZ) X3 L77-1810-05 CRYSTAL RESONATOR(9.8304MHZ)

X3 L77-1835-05 CRYSTAL RESONATOR(9.8304MHZ) XF1 ∗ L71-0601-05 CRYSTAL FILTER(49.95MHZ)

CP1 R90-0724-05 MULTI-COMP 1K X4 CP2-9 R90-0741-05 MULTIPLE RESISTOR CP10 R90-0724-05 MULTI-COMP 1K X4 CP11-18 R90-0741-05 MULTIPLE RESISTOR

K : TK-373G K K2 : TK-373G K2

R39 RK73GB1J220J CHIP R 22 J 1/16W R41 RK73GB1J100J CHIP R 10 J 1/16W R42 RK73GB1J220J CHIP R 22 J 1/16W R43 RK73GB1J101J CHIP R 100 J 1/16W R44 RK73GB1J102J CHIP R 1.0K J 1/16W

R45 RK73GB1J562J CHIP R 5.6K J 1/16W R46 RN73GH1J154D CHIP R 150K D 1/16W R47 RK73GB1J104J CHIP R 100K J 1/16W R48 RK73GB1J334J CHIP R 330K J 1/16W R49 RK73GB1J103J CHIP R 10K J 1/16W

R50 RN73GH1J154D CHIP R 150K D 1/16W R51 RK73GB1J102J CHIP R 1.0K J 1/16W R52 RK73GB1J181J CHIP R 180 J 1/16W R53 RK73GB1J472J CHIP R 4.7K J 1/16W R54 RN73GH1J154D CHIP R 150K D 1/16W

R55 RK73GB1J105J CHIP R 1.0M J 1/16W R56-58 RK73EB2ER39K CHIP R 0.39 K 1/4W R59 RN73GH1J154D CHIP R 150K D 1/16W R60 R92-1252-05 CHIP R 0OHM J 1/16W R61 RK73GB1J563J CHIP R 56K J 1/16W

R62 RN73GH1J154D CHIP R 150K D 1/16W

TK-373G

TX-RX UNIT (X57-6500-XX)

New

Ref. No.

R64,65 RK73GB1J104J CHIP R 100K J 1/16W R67 RK73GB1J104J CHIP R 100K J 1/16W R68 RN73GH1J154D CHIP R 150K D 1/16W R69 RK73GB1J220J CHIP R 22 J 1/16W R70 RK73GB1J104J CHIP R 100K J 1/16W K

Address

Parts No. Description

parts

PARTS LIST

New

Destination Destination

Ref. No.

R133 R92-1252-05 CHIP R 0OHM J 1/16W R135 RK73GB1J100J CHIP R 10 J 1/16W R137 RK73GB1J101J CHIP R 100 J 1/16W R138 RK73GB1J102J CHIP R 1.0K J 1/16W R139 RK73GB1J151J CHIP R 150 J 1/16W

Address

Parts No. Description

parts

R71 RK73GB1J124J CHIP R 120K J 1/16W R72 RK73GB1J103J CHIP R 10K J 1/16W R73 RK73GB1J273J CHIP R 27K J 1/16W R74,75 RK73GB1J223J CHIP R 22K J 1/16W R76 R92-1252-05 CHIP R 0OHM J 1/16W

R77 RK73GB1J100J CHIP R 10 J 1/16W R78,79 RK73GB1J153J CHIP R 15K J 1/16W R80,81 RK73GB1J223J CHIP R 22K J 1/16W R82 RK73GB1J102J CHIP R 1.0K J 1/16W R84 RK73GB1J394J CHIP R 390K J 1/16W K2

R84 RK73GB1J474J CHIP R 470K J 1/16W K R85 RK73GB1J102J CHIP R 1.0K J 1/16W R86 RK73GB1J334J CHIP R 330K J 1/16W R87 R92-1252-05 CHIP R 0OHM J 1/16W R88 RK73GB1J102J CHIP R 1.0K J 1/16W

R89 RK73GB1J821J CHIP R 820 J 1/16W R90,91 RK73GB1J332J CHIP R 3.3K J 1/16W R92 RK73GB1J100J CHIP R 10 J 1/16W R93 RK73GB1J332J CHIP R 3.3K J 1/16W R94 RK73GB1J121J CHIP R 120 J 1/16W

R95 RK73GB1J681J CHIP R 680 J 1/16W R96 RK73GB1J221J CHIP R 220 J 1/16W R97 RK73GB1J183J CHIP R 18K J 1/16W R98 RK73GB1J473J CHIP R 47K J 1/16W R99 RK73GB1J684J CHIP R 680K J 1/16W

R100 RK73GB1J473J CHIP R 47K J 1/16W R101 RK73GB1J104J CHIP R 100K J 1/16W R102,103 RK73GB1J272J CHIP R 2.7K J 1/16W R104 RK73GB1J472J CHIP R 4.7K J 1/16W R105,106 RK73GB1J272J CHIP R 2.7K J 1/16W

R140 RK73GB1J102J CHIP R 1.0K J 1/16W R142 R92-1368-05 CHIP R 0OHM R143 RK73GB1J184J CHIP R 180K J 1/16W R144 R92-1252-05 CHIP R 0OHM J 1/16W R145 RK73GB1J474J CHIP R 470K J 1/16W

R146 RK73GB1J472J CHIP R 4.7K J 1/16W R147 RK73GB1J470J CHIP R 47 J 1/16W R148 RK73GB1J220J CHIP R 22 J 1/16W R149 RK73GB1J104J CHIP R 100K J 1/16W R150 RK73GB1J102J CHIP R 1.0K J 1/16W

R151 RK73GB1J473J CHIP R 47K J 1/16W R152 RK73GB1J823J CHIP R 82K J 1/16W R153 RK73GB1J104J CHIP R 100K J 1/16W R154 RK73GB1J564J CHIP R 560K J 1/16W R155 RK73GB1J473J CHIP R 47K J 1/16W

R156 RN73GH1J683D CHIP R 68K D 1/16W R157 RK73GB1J102J CHIP R 1.0K J 1/16W R158 R92-1252-05 CHIP R 0OHM J 1/16W R159 RK73GB1J102J CHIP R 1.0K J 1/16W R160 RK73GB1J222J CHIP R 2.2K J 1/16W

R161 RK73GB1J563J CHIP R 56K J 1/16W R162 RN73GH1J333D CHIP R 33K D 1/16W R163 RN73GH1J274D CHIP R 270K D 1/16W R164 RK73GB1J184J CHIP R 180K J 1/16W R165 RK73GB1J473J CHIP R 47K J 1/16W

R166 RK73GB1J103J CHIP R 10K J 1/16W R167 RK73GB1J564J CHIP R 560K J 1/16W R169 RK73GB1J473J CHIP R 47K J 1/16W R170,171 RK73GB1J474J CHIP R 470K J 1/16W R172 RK73GB1J473J CHIP R 47K J 1/16W

R107 RK73GB1J470J CHIP R 47 J 1/16W R108 RK73GB1J222J CHIP R 2.2K J 1/16W R109 RK73GB1J102J CHIP R 1.0K J 1/16W R110,111 RK73GB1J103J CHIP R 10K J 1/16W R112 RK73GB1J102J CHIP R 1.0K J 1/16W

R113 RK73GB1J391J CHIP R 390 J 1/16W R114,115 RK73GB1J103J CHIP R 10K J 1/16W R116,117 RK73GB1J153J CHIP R 15K J 1/16W R118 RK73GB1J473J CHIP R 47K J 1/16W R119 R92-1252-05 CHIP R 0OHM J 1/16W

R120,121 RK73GB1J473J CHIP R 47K J 1/16W R122 RK73GB1J102J CHIP R 1.0K J 1/16W R123 RK73GB1J104J CHIP R 100K J 1/16W R124 RK73GB1J334J CHIP R 330K J 1/16W R126 RK73GB1J472J CHIP R 4.7K J 1/16W

R127 RK73GB1J333J CHIP R 33K J 1/16W R128 RK73GB1J102J CHIP R 1.0K J 1/16W R129 RK73GB1J224J CHIP R 220K J 1/16W R130 R92-1252-05 CHIP R 0OHM J 1/16W R131 RK73GB1J101J CHIP R 100 J 1/16W

R132 RK73GB1J104J CHIP R 100K J 1/16W

K : TK-373G K K2 : TK-373G K2

R173 RK73GB1J104J CHIP R 100K J 1/16W R174 R92-1252-05 CHIP R 0OHM J 1/16W R175 RK73GB1J103J CHIP R 10K J 1/16W R176 R92-1252-05 CHIP R 0OHM J 1/16W R177 RK73GB1J473J CHIP R 47K J 1/16W

R178,179 RK73GB1J104J CHIP R 100K J 1/16W R180 RK73GB1J222J CHIP R 2.2K J 1/16W R181 RK73GB1J472J CHIP R 4.7K J 1/16W R182,183 R92-1252-05 CHIP R 0OHM J 1/16W R184 RK73GB1J823J CHIP R 82K J 1/16W

R185 RK73GB1J102J CHIP R 1.0K J 1/16W R186 RK73GB1J155J CHIP R 1.5M J 1/16W R198 RK73GB1J393J CHIP R 39K J 1/16W R199 RK73GB1J103J CHIP R 10K J 1/16W R200 RK73GB1J101J CHIP R 100 J 1/16W

R201 R92-1252-05 CHIP R 0OHM J 1/16W R202 RK73GB1J474J CHIP R 470K J 1/16W R203 R92-1252-05 CHIP R 0OHM J 1/16W R204 RK73GB1J273J CHIP R 27K J 1/16W R205 RK73GB1J182J CHIP R 1.8K J 1/16W

R206 RK73GB1J471J CHIP R 470 J 1/16W

PARTS LIST

TK-373G

TX-RX UNIT (X57-588X-XX)

New

Ref. No.

R207 RK73GB1J101J CHIP R 100 J 1/16W R208 RN73GH1J682D CHIP R 6.8K D 1/16W R209 RK73GB1J224J CHIP R 220K J 1/16W R210 RK73GB1J474J CHIP R 470K J 1/16W R211 RK73GB1J103J CHIP R 10K J 1/16W

R212 RN73GH1J683D CHIP R 68K D 1/16W R213 RN73GH1J682D CHIP R 6.8K D 1/16W R214 RK73GB1J473J CHIP R 47K J 1/16W R215 RK73GB1J184J CHIP R 180K J 1/16W R218 R92-1252-05 CHIP R 0OHM J 1/16W

R219 RK73GB1J223J CHIP R 22K J 1/16W R220,221 RK73GB1J184J CHIP R 180K J 1/16W R222 RK73GB1J153J CHIP R 15K J 1/16W R223 RK73GB1J223J CHIP R 22K J 1/16W R226 R92-1252-05 CHIP R 0OHM J 1/16W

R230 RK73GB1J223J CHIP R 22K J 1/16W R231 RK73GB1J563J CHIP R 56K J 1/16W R232,233 R92-1252-05 CHIP R 0OHM J 1/16W R234 RK73GB1J564J CHIP R 560K J 1/16W R235 RK73GB1J474J CHIP R 470K J 1/16W

R237 R92-1252-05 CHIP R 0OHM J 1/16W R239 RK73GB1J153J CHIP R 15K J 1/16W R240 RK73GB1J223J CHIP R 22K J 1/16W R241 RK73GB1J564J CHIP R 560K J 1/16W R242 R92-1252-05 CHIP R 0OHM J 1/16W

R245 RK73GB1J104J CHIP R 100K J 1/16W R249 R92-1252-05 CHIP R 0OHM J 1/16W R250 RK73GB1J472J CHIP R 4.7K J 1/16W R252,253 R92-1252-05 CHIP R 0OHM J 1/16W R254 RK73GB1J184J CHIP R 180K J 1/16W

R255 RK73GB1J474J CHIP R 470K J 1/16W R256 R92-1252-05 CHIP R 0OHM J 1/16W R258 R92-1252-05 CHIP R 0OHM J 1/16W R259 RK73GB1J473J CHIP R 47K J 1/16W R260,261 R92-1252-05 CHIP R 0OHM J 1/16W

R270,271 RK73HB1J103J CHIP R 10K J 1/16W R272 RK73HB1J472J CHIP R 4.7K J 1/16W R273 RK73HB1J562J CHIP R 5.6K J 1/16W R274 R92-1368-05 CHIP R 0OHM R275 RK73HB1J221J CHIP R 220 J 1/16W

R276-278 RK73GB1J104J CHIP R 100K J 1/16W R280 RK73GB1J154J CHIP R 150K J 1/16W R301 R92-0679-05 CHIP R 0OHM R303,304 R92-1252-05 CHIP R 0OHM J 1/16W R305 RK73GB1J104J CHIP R 100K J 1/16W

R307 RK73GB1J563J CHIP R 56K J 1/16W R309 RK73GB1J101J CHIP R 100 J 1/16W R310 RK73GB1J221J CHIP R 220 J 1/16W R314 RK73GB1J104J CHIP R 100K J 1/16W R318 RK73GB1J104J CHIP R 100K J 1/16W

R320,321 R92-1252-05 CHIP R 0OHM J 1/16W R322 R92-1368-05 CHIP R 0OHM R326 RK73GB1J124J CHIP R 120K J 1/16W R327 RK73GB1J393J CHIP R 39K J 1/16W VR1 R12-7491-05 TRIMMING POT.(68K)

S401 S70-0457-05 TACT SWITCH

Address

Parts No. Description

parts

TX-RX UNIT (X57-6500-XX)

New

Destination Destination

Ref. No.

S402,403 S70-0424-05 TACT SWITCH

MIC1 T91-0579-05 MIC ELEMENT

D1 MA2S111 DIODE D2 MA2S376 VARIABLE CAPACITANCE DIODE D3 HVU131 DIODE D4 MA2S376 VARIABLE CAPACITANCE DIODE D5 HSC277 DIODE

D6 MA360 VARIABLE CAPACITANCE DIODE D7 HSC277 DIODE K D7 HVC131 DIODE K2 D8 HZU5ALL DIODE D9 MA2S376 VARIABLE CAPACITANCE DIODE

D10 HSC277 DIODE D11 MA2S376 VARIABLE CAPACITANCE DIODE D12 MA2S111 DIODE D13,14 DAN235E DIODE D15 HSC277 DIODE

D17 MA2S111 DIODE D21 1SS373 DIODE D22 1SR154-400 DIODE D23 RB706F-40 DIODE D27 MA2S111 DIODE

D28,29 RB706F-40 DIODE IC1 M68732H POWER MODULE K IC1 M68732UH POWER MODULE K2 IC3 NJM2904V MOS IC IC4 TA31136FN MOS IC

IC5,6 BU4094BCFV MOS IC IC7 XC62GR5012PR MOS IC IC8 PST9140NR MOS IC IC9 RN5VL45C MOS IC IC10 AT2408N10SI2.5 ROM IC

IC10 24LC08BT-ISN ROM IC IC11 TA7368F MOS IC IC12 AT29C020-90TI ROM IC IC13 30622M4A-410GP MPU IC14 TC35453F MOS IC

IC15,16 TC75W51FU MOS IC IC17 X9C103SI ANALOG IC IC19 TC75W51FU MOS IC Q1 2SC5010-T1 TRANSISTOR Q2 2SC4226(R24) TRANSISTOR

Q3 2SC5010-T1 TRANSISTOR Q4,5 2SC5108(Y) TRANSISTOR Q6 2SC4988 TRANSISTOR Q7 2SJ243 FET Q8 RN47A4 TRANSISTOR

Q9 DTC144EE DIGITAL TRANSISTOR Q10 2SK508NV(K52) FET Q11 2SC4617(S) TRANSISTOR Q12 2SC4649(N,P) TRANSISTOR Q13,14 DTA144EE DIGITAL TRANSISTOR

Q15 DTC114EE DIGITAL TRANSISTOR Q16 DTA114YE DIGITAL TRANSISTOR Q17 DTC144EE DIGITAL TRANSISTOR

Address

Parts No. Description

parts

K : TK-373G K K2 : TK-373G K2

TK-373G

PARTS LIST

TX-RX UNIT (X57-6500-XX)

New

Ref. No.

Q18 FP210 TRANSISTOR Q19 3SK318 FET Q20,21 UMG3N TRANSISTOR Q22 2SC4649(N,P) TRANSISTOR Q23 RN47A4 TRANSISTOR

Q24,25 DTC114EE DIGITAL TRANSISTOR Q26 DTA114EE DIGITAL TRANSISTOR Q27 UPA572T FET Q28 DTA114YE DIGITAL TRANSISTOR Q30 2SK1588 FET

Q31 2SC4649(N,P) TRANSISTOR Q32 2SA1362(GR) TRANSISTOR Q33,34 DTC144EE DIGITAL TRANSISTOR Q35 UPA672T FET Q36 2SK1824 FET

Q37 2SA1774(S) TRANSISTOR Q38 2SC4617(S) TRANSISTOR Q39 2SK1824 FET Q301 3SK318 FET

Address

Parts No. Description

parts

New

TX-RX UNIT (X57-588X-XX)

Destination Destination

Ref. No.

Address

Parts No. Description

parts

K : TK-373G K K2 : TK-373G K2

EXPLODED VIEW

TK-373G

701

DISPLAY unit

2.5

J32-0925-04

IC1

Jx8

TX-RX unit (A/2)

TX-RX unit (B/2)

703

704 : K2 only

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

702

A M3.6x4 :N09-2319-05 B M2x3.5 :N09-2331-05 C NUT :N14-0582-14

D NUT :N14-0583-04 E M2.6x6 :N30-2606-46 F M2x3 :N39-2030-46 G M2x5 :N67-2005-46

H f2x4.5 :N78-2045-46

I f2x3 :N79-2030-46

J f2x5 :N83-2005-46

TK-373G

PACKING

28. PACKING FIXTURE (H12-1487-02)

38. BELT HOOK (J29-0658-05)

30. PROTECTION BAG (H25-2012-04)

29. PROTECTION BAG (H25-0085-04)

WARRANTY CARD

PAMPHLET : K2 only

6. INSTRUCTION MANUAL (B62-1576-00)

3. CAP (SP/MIC)

(B09-0351-03)

35. SP/MIC HOLDER (J21-4493-04)

K. SCREW SET (N99-2012-05)

28. PACKING FIXTURE (H12-1487-02)

31. ITEM CARTON CASE (H52-1859-12)

UPC CODE LABEL

ADJUSTMENT

Test Equipment Required for Alignment

Test Equipment Major Specifications

1. Standard Signal Generator Frequency Range 450 to 470MHz (K) 470 to 490MHz (K2) (SSG) Modulation Frequency modulation and external modulation.

Output -127dBm/0.1µV to greater than -47dBm/1mV

2. Power Meter Input Impedance 50Ω.

Operation Frequency 450 to 470MHz (K) 470 to 490MHz (K2) Measurement Range Vicinity of 5W

3. Deviation Meter Frequency Range 450 to 470MHz (K) 470 to 490MHz (K2)

4. Digital Volt Meter Measuring Range 10mV to 10V DC (DVM) Input Impedance High input impedance for minimum circuit loading.

5. Oscilloscope DC through 30MHz.

6. High Sensitivity Frequency Range 10Hz to 1000MHz. Frequency Counter Frequency Stability 0.2ppm or less.

7. Ammeter 5A.

8. AF Volt Meter Frequency Range 50Hz to 10kHz. (AF VTVM) Voltage Range 1mV to 10V.

9. Audio Generator (AG) Frequency Range 50Hz to 5kHz or more.

Output 0 to 1V.

10. Distortion Meter Capability 3% or less at 1kHz. Input Level 50mV to 10Vrms.

11. Spectrum Analyzer Measuring Range DC to 1GHz or more

12. Tracking Generator Center frequency 50kHz to 600MHz Output Voltage 100mV or more

13. 8Ω Dummy Load Approx. 8Ω, 3W.

14. Regulated Power Supply 5V to 10V, approx. 3A

Useful if ammeter equipped.

TK-373G

■ The following parts are required for adjustment

1. Antenna connector adapter

The antenna connector of this radio uses an SMA terminal.

Use an antenna connector adapter [SMA(f) – BNC(f) or SMA(f) – N(f)] for adjustment. (The adapter is not provided as an option, so buy a commercially-available one.)

Note

When the antenna connector adapter touches the knob, draw out the knob to mount the connector.

Repair Jig (Chassis)

1. Jig (chassis : Part No. A10-4009-03) for adjustment.

2. Use the jig as follows. 1 Place the TX-RX unit on the jig and fix it with thirteen

screws z .

2 Solder the antenna terminal of the TX-RX unit.

3. Supply power from an external power supply.

Relay terminal : + (7.5) Jig (Chassis) : -

JIG

Coaxial antenna connector

Relay terminal

(+)

Power module

UNIT

TK-373G

ADJUSTMENT

Repair Jig (Extention Flat cable : part No.

E37-0851-05)

This cable is used for connecting the TK-373G display unit and TX/RX unit when you test or repair the transceiver.

Display unit

Extention Flat cable

TX/RX unit

Caution : You must connect TK-373G display unit when you

test or repair the transceiver.

Test Mode

■ Test mode operating features

This transceiver has a test mode. To enter test mode, press

the [∞] key and turn the power on. Hold the [∞] key until the test channel No. and test signalling No. appear on LCD. Test

mode can be inhibited by programming. To exit test mode, switch the power on again. The following functions are available in test mode.

• Controls

[PTT] Used when making a transmission. [Side1] Changes wide and narrow. [Side2] Monitor ON and OFF. [A] Sets to the Tuning mode. [B] Unused [∞] RF power HIGH and LOW. [5] Changes signalling. [ENCODER] Changes channel.

• LCD indicator

“LO” Lights at RF Power Low. “MON” Lights at monitor ON.

■ Frequency and signalling

The set has been adjusted for the frequencies shown in the following table. When required. re-adjust them following the adjustment procedure to obtain the frequencies you want in actual operation.

Frequency (MHz) (K type)

Channel No. RX Frequency TX Frequency

1 460. 05000 460. 10000 2 450. 05000 450. 10000 3 469. 95000 469. 90000 4 460. 00000 460. 00000 5 460. 20000 460. 20000 6 460. 40000 460. 40000

7~16

Frequency (MHz) (K2 type)

Channel No. RX Frequency TX Frequency

1 480. 05000 480. 10000 2 470. 05000 470. 10000 3 489. 95000 489. 90000 4 480. 00000 480. 00000 5 480. 20000 480. 20000 6 480. 40000 480. 40000

7~16

Signalling

Signalling No. RX TX

1 None None 2 None 100Hz square wave 3 LTR DATA LTR DATA 4 QT 67.0Hz QT 67.0Hz 5 QT 151.4Hz QT 151.4Hz 6 QT 210.7Hz QT 210.7Hz 7 QT 250.3Hz QT 250.3Hz 8 DQT D023N DQT D023N 9 DQT D754I DQT D754I

10 None DTMF tone 9

• Preparations for tuning the transceiver

Before attempting to tune the transceiver, connect the unit

to a suitable power supply.

Whenever the transmitter is tuned, the unit must be

connected to a suitable dummy load (i.e. power meter).

The speaker output connector must be terminated with a

8Ω dummy load and connected to an AC voltmeter and an audio distortion meter or a SINAD measurement meter at all times during tuning.

• LED indicator

Red LED Lights during transmission. Blinks during low

battery voltage warning.

Green LED Lights when there is a carrier.

• Transceiver tuning

(To place the transceiver in tuning mode)

Channel appears on the LCD. Set the channel according to

the tuning requirements.

ADJUSTMENT

LCD display (Test mode)

channel No. Signalling No.

Press [A], to enter tuning mode. Use the [∞] key to write tuning data through the tuning modes, and the channel selector knob to adjust the tuning requirements (1 to 256 appears on LCD).

Use the [5] key to select the adjustment item through the tuning modes. Use the [B] key to adjust 3 or 5 point tuning, and use the [Side1] key to switch between Wide/Narrow.

LCD display (Tuning mode)

Wide/Narrow indicator

TK-373G

H.P.O.W. . 1.

Adjustment item

Point tuning indicator

Panel Tuning Mode (K type)

TEST Ch RX frequency (MHz) TX frequency (MHz)

Low 450.05000 450.00000

Low’ 455.05000 455.00000

Center 460.05000 460.00000

High’ 465.05000 465.00000

High 469.95000 470.00000

Panel Tuning Mode (K2 type)

TEST Ch RX frequency (MHz) TX frequency (MHz)

Low 470.05000 470.00000

Low’ 475.05000 475.00000

Center 480.05000 480.00000

High’ 485.05000 485.00000

High 489.95000 490.00000

Adjustment (1~256)

450-470(MHz)

470-490(MHz)

OFF:Wide ON:Narrow

TK-373G

■ Tuning mode

Battery warning level(Wide)

Narrow

V Q T

QT VCO balance(Narrow)

X Q T

QT TCXO balance(Narrow)

V D Q T

DQT VCO balance(Narrow)

X D Q T

QT TCXO balance(Narrow)

M A X

Max deviation (Narrow)

F Q T

QT fine deviation(Narrow)

F D Q T

DQT fine deviation(Narrow)

F L T R

LTR fine deviation(Narrow)

D T M F

DTMF fine deviation(Narrow)

S Q L 3

Squelch open(Narrow)

[B]

R S S I

RSSI (Narrow)

Narrow

S Q L 9

Squelch tight(Narrow)

[ ]

[Side1]

QT VCO balance(Wide)

[Side1]

QT TCXO balance(Wide)

[Side1]

DQT VCO balance(Wide)

[Side1]

QT TCXO balance(Wide)

[Side1]

Max deviation (Wide)

[Side1]

QT fine deviation(Wide)

[Side1]

DQT fine deviation(Wide)

[Side1]

LTR fine deviation(Wide)

[Side1]

DTMF fine deviation(Wide)

[Side1]

Squelch open(Wide)

[ ]

[Side1]

B A T T

[ ]

H P O W

Hi Power

[ ]

L P O W

Low Power

[ ]

Wide

V Q T

[ ] [ ]

X Q T

[ ] [ ]

V D Q T

[ ] [ ]

X D Q T

[ ] [ ]

M A X

[ ] [ ]

F Q T

[ ] [ ]

F D Q T

[ ]

F L T R

[ ]

D T M F

[ ] [ ]

S Q L 3

[ ][ ]

Wide

S Q L 9

Squelch tight(Wide)

[ ] [ ]

[B]

ADJUSTMENT

H.POW

Hi Power (Low)

L.POW

Low Power (Low)

V Q T

QT VCO balance(W,L)

X Q T

QT TCXO balance(W,L)

V.D Q T

DQT VCO balance(W,L)

X.D Q T

QT TCXO balance(W,L)

M A X

Max deviation (W, L)

F Q T

QT fine deviation(W,L)

F.D Q T

DQT fine deviation(W,L)

F.L T R

LTR fine deviation(W ,L)

R S S I

RSSI (Wide)

H.P.OW

Hi Power (Low’)

[ ][ ][ ]

L.P.OW

Low Power (Low’)

[ ][ ][ ]

[ ]

H.P.O.W

Hi Power (Cen)

L.P.O.W

Low Power (Cen)

.V.Q.

QT VCO balance(W,C)

.X.Q.

QT TCXO balance(W,C)

V.D.Q.T

DQT VCO balance(W,C)

X.D.Q.T

QT TCXO balance(W,C)

.M.A.

Max deviation (W, C)

.F.Q.

QT fine deviation(W,C)

F.D.Q.T

DQT fine deviation(W,C)

F.L.T.R

LTR fine deviation(W ,C)

H.P.O.W

Hi Power (Hi’)

L.P.O.W

Low Power (Hi’)

[ ]

H.P.O.W.

Hi Power (Hi)

[ ]

L.P.O.W.

Low Power (Hi)

[ ]

.V.Q.T. .

QT VCO balance(W,H)

.X.Q.T. .

QT TCXO balance(W,H)

V.D.Q.T.

DQT VCO balance(W,H)

X.D.Q.T.

QT TCXO balance(W,H)

.M.A.X. .

Max deviation (W, H)

.F.Q.T. .

QT fine deviation(W,H)

F.D.Q.T.

DQT fine deviation(W,H)

F.L.T.R.

LTR fine deviation(W ,H)

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

[B]

[ ]

TK-373G

ADJUSTMENT

Note

Precision parts are used for the PTT, side1, and side2 switches.

In order to avoid damaging these switches, do not press them using your fingers. However, if it is necessary to press these

switches, be sure to press them at 90˚ angles, pressing them at other angles can easily damage the parts.

Common Section

Item Condition

1. Setting 1)

2. VCO lock [Panel Test Mode] voltage 1) CH-Sig:2-1 Power meter ANT Check 0.8V or more RX 2) CH-Sig:3-1 DVM CV(LV) 3.5V ± 0.1V (K,K2) TX 3) CH-Sig:2-1 0.8V or more

BATT terminal voltage:7.5V

2) SSG Standard modulation [Wide] MOD:1kHz, DEV:3kHz [Narrow] MOD:1kHz, DEV:1.5kHz [Semi wide] MOD:1kHz, DEV:2.4kHz

PTT:ON

4) CH-Sig:3-1 3.5 ± 0.1V (K,K2) PTT:ON

Test equipment

Measurement Adjustment

Terminal Parts Method

Specifications/

Remark

Transmitter Section

Item Condition

1. Frequency 1) PTT:ON Freq. Counter ANT VR1 Center frequency Adjust Power meter (460.0 MHz) ± 100Hz (K)

2. Max Power 1) Adj item [HPOW] Check 4.2W or more Check Adjust [256]

2) Adj item

[H.P O W] ➞ [H.P.O W] ➞ [H.P.O.W] ➞ [H.P.O.W.] ➞ [H.P.O.W. .]

Adjust [256] PTT:ON

Hight Power Adjust Adjust [∗∗∗] knob 2.2A or less

Hight Power Check 1) CH-Sig:1-1 Check 3.0~5.0W

5. Low Power 1) Adj item [LPOW] Encoder 1.0W ±0.1W Adjust Adjust [∗∗∗] knob 1.0A or less

1) Adj item [HPOW] Encoder 4.2W ±0.1W

2) Adj item

[H.P O W] ➞ [H.P.O W] ➞ [H.P.O.W] ➞ [H.P.O.W.] ➞ [H.P.O.W. .]

Adjust [∗∗∗] PTT:ON

[Panel Test Mode]

PTT:ON 2.3A or less

2) CH-Sig:2-1 PTT:ON

3) CH-Sig:3-1 PTT:ON

2) Adj item

[L.P O W] ➞ [L.P.O W] ➞ [L.P.O.W] ➞ [L.P.O.W.] ➞ [L.P.O.W. .]

Adjust [∗∗∗] PTT:ON

Test equipment

Am meter (480.0 MHz) ± 100Hz (K2)

Measurement Adjustment

Terminal Parts Method

Specifications/

Remark

TK-373G

ADJUSTMENT

Item Condition

6. Low Power [Panel Test Mode] Check 1) CH-Sig:1-1 Check 0.5~1.5W

Set low power (Push [∞]) 1.2A or less PTT:ON

2) CH-Sig:2-1 PTT:ON

3) CH-Sig:3-1 PTT:ON

7. Max DEV 1) Adj item [MAX] Power meter ANT Encoder 3.8kHz ±50Hz Adjust Adjust [∗∗∗] Dev meter SP/MIC connector knob (According to [Wide] AG:1kHz / 120mV Oscilloscope

Dev meter filter AG LPF:15kHz AF VTVM HPF:OFF

2) Adj item

[.M A X] ➞ [.M.A.X] ➞ [.M.A.X. .]

Adjust [∗∗∗] PTT:ON

[Narrow] 1) Adj item [MAX .] 1.75kHz

Adjust [∗∗∗] (According to PTT:ON the larger+,-)

8. MIC [Panel Test Mode] Check 2.2~3.6kHz Sensitivity 1) CH-Sig:1-1 Check AG:1kHz / 12mV

LPF:15kHz PTT:ON

9. QT TCXO Adj item [X Q T] Power meter ANT Encoder Balance Adjust [200] : K, K2 Dev meter SP/MIC connector knob

Wide, Narrow Oscilloscope

10.DQT TCXO Adj item [X D Q T] AG Balance Adjust [150] : K, K2 AF VTVM

Wide, Narrow

11.DQT VCO 1) Adj item [VDQT] Make the Balance Adjust [∗∗∗] demodulation Adjust LPF:3kHz waves into [Wide] HPF:OFF

2) Adj item

[V.D Q T] ➞ [V.D.Q.T] ➞ [V.D.Q.T. .]

Adjust [∗∗∗] PTT:ON

[Narrow] 3) Adj item [V D Q T .] Power meter

Adjust [∗∗∗] Dev meter PTT:ON Oscilloscope

12.QT VCO Adj item [∗∗∗] Balance 200

[VDQT] x =[VQT] (K, K2)

150

Test equipment

Measurement Adjustment

Terminal Parts Method

the larger +,-)

square waves.

Specifications/

Remark

ADJUSTMENT

TK-373G

Item Condition

13.

QT Deviation Adjust Adjust [∗∗∗] Dev meter [Wide] LPF:3kHz Oscilloscope

[Narrow] 3) Adj item [FQT .]

14.DQT 1) Adj item [FDQT] Wide:0.75kHz Devition Adjust [∗∗∗] Narrow:0.35kHz Adjust LPF:3kHz [Wide] HPF:OFF

[Narrow] 3) Adj item [FDQT .] Wide:0.75kHz

15.LTR 1) Adj item [FLTR] Wide:1.0kHz ±50Hz Deviation Adjust [∗∗∗] Narrow:0.75kHz Adjust LPF:15kHz [Wide] HPF:OFF

[Narrow] 3) Adj item [FLTR .]

16.DTMF 1) Adj item [DTMF] Wide:3.0kHz ±0.1kHz Deviation Adjust [∗∗∗] Narrow:1.5kHz Adjust LPF:15kHz [Wide] HPF:OFF

[Narrow] 2) Adj item [DTMF .]

17.BATT 1) Adj item [BATT] Power meter ANT Encoder After pressing the BATT terminal Detection Adjust [∗∗∗] DVM BATT knob PTT switch, confirm voltage:5.9V Writing PTT:ON terminal that one predeter-

18.BATT [Panel Test Mode] Check Detection 1) CH-Sig:1-1 Check

1) Adj item [FQT] Power meter ANT Encoder Wide:0.85kHz

HPF:OFF

2) Adj item

[.F Q T] ➞ [.F.Q.T] ➞ [.F.Q.T. .]

Adjust [∗∗∗] PTT:ON

2) Adj item

[F.D Q T] ➞ [F.D.Q.T] ➞ [F.D.Q.T. .]

Adjust [∗∗∗] PTT:ON

Adjust [∗∗∗] Narrow:0.35kHz PTT:ON

2) Adj item

[F.L T R] ➞ [F.L.T.R] ➞ [F.L.T.R. .]

Adjust [∗∗∗] PTT:ON

PTT:ON

Adjust [∗∗∗] PTT:ON

BATT terminal voltage:6.5V PTT:ON

BATT terminal voltage:5.7V PTT:ON

Test equipment

Measurement Adjustment

Terminal Parts Method

SP/MIC connector

knob Narrow:0.40kHz

mined numeric in the range of 1 to 256 appears and then press the That number will be stored in memory.

[∞] key.

Specifications/

Remark

±40Hz ±40Hz

±50Hz

No blinking of LED

Blinking of LED

TK-373G

ADJUSTMENT

Item Condition

K type

1. BPF (PANEL TEST MODE) Tracking generator ANT TC301, TC302, Adjust wave form to figure 1. Adjustment CH-Sig 1-1 Spectrum analyzer BPF TC303

Tra-G setting -40dBm

2. Sensitivity [Panel Test Mode] SSG ANT Check 1) CH-Sig:1-1 AF VTVM Check 12dB SINAD or

SSG OUT Oscilloscope more Wide:-118dBm (0.28µV) (MOD:1kHz / ±3kHz) Narrow:-116dBm (0.35µV) (MOD:1kHz / ±1.5kHz)

Squelch (Open) Adjust Adjust [∗∗∗] knob squelch [Wide] SSG OUT: squelch. threshold point

[Narrow] -123dBm

Squelch(Tight) Adjust Adjust [∗∗∗] squelch [Wide] [Narrow] 2) Adj item [SQL9.]

5. Squelch [Panel Test Mode] Check Squelch must Check 1) CH-Sig:1-1 be opened.

1) Adj item [SQL3] Encoder

-124dBm

2) Adj item [SQL3.] Adjust [∗∗∗] SSG OUT:

1) Adj item [SQL9] Adjust to the

SSG OUT:-117dBm (0.3µV)

SSG OUT:-116dBm (0.35µV)

SQ Level : [SQL5] SSG OUT:

-118dBm (0.28µV)

2) SSG OUT:OFF Squelch must

Test equipment

Measurement Adjustment

Terminal Parts Method

Fig. 1

Specifications/

Remark

Adjust to the

threshold point

be closed.

ADJUSTMENT

TK-373G

Item Condition

K2 type

1. BPF (PANEL TEST MODE) Tracking generator ANT TC301, TC302, Adjust wave form to figure 1. Adjustment CH-Sig 1-1 Spectrum analyzer BPF TC303

Tra-G setting -40dBm

2. Sensitivity [Panel Test Mode] SSG ANT Check 1) CH-Sig:1-1 AF VTVM Check 12dB SINAD or

SSG OUT Oscilloscope more Wide:-118dBm (0.28µV) (MOD:1kHz / ±3kHz) Narrow:-116dBm (0.35µV) (MOD:1kHz / ±1.5kHz)

Squelch (Open) Adjust Adjust [∗∗∗] knob squelch [Wide] SSG OUT: squelch. threshold point

[Narrow] -120dBm (0.22µV)

Squelch(Tight) Adjust Adjust [∗∗∗] squelch [Wide] [Narrow] 2) Adj item [SQL9.]

5. Squelch [Panel Test Mode] Check Squelch must Check 1) CH-Sig:1-1 be opened.

1) Adj item [SQL3] Encoder

-122dBm (0.18µV)

2) Adj item [SQL3.] Adjust [∗∗∗] SSG OUT:

1) Adj item [SQL9] Adjust to the

SSG OUT:-117dBm (0.3µV)

SSG OUT:-116dBm (0.35µV)

SQ Level : [SQL5] SSG OUT:

-118dBm (0.28µV)

2) SSG OUT:OFF Squelch must

Test equipment

Measurement Adjustment

Terminal Parts Method

Fig. 1

Specifications/

Remark

Adjust to the

threshold point

be closed.

TK-373G

ADJUSTMENT

Adjustment points TX-RX unit (X57-650) Component side view Foil Side View

ANT

MIC SP

C13

IC12

IC14

VR1

BPF

VR1 : Frequency adjustment

BPF

CN3

MIC

Battery terminal

TC1

TC2

TC303

TC301

TC302

ANT

TC1 : Transmit lock voltage adjustment TC2 : Receive lock voltage adjustment TC301 : TC302 : Band-pass filter waveform adjustment TC303 :

}

BPF : Band-pass filter test point CV(LV) : Lock voltage adjustment terminal.

Fig. 2 Adjustment points

ABCDEFGHI JKLMNOPQRS

DISPLAY UNIT (X54-3250-11) Component Side View

.ON.feRsserddA

105CIE4 105QH4 205QG4

105DD4 205DF5 305DF5 405DF5 505DD4 605DH4 705DG4 115DC4 515DG7 615DD7

DISPLAY UNIT (X54-3250-11) Component Side View (J72-0663-02)

116

D511

CP502

R513

CP501

R514

R515

C513

R501

R516

R517

L501

C501

R511

D505

C506

R507

IC501

48 33

D501

LCD

R508

D502 C507

C515

C509 C508

R522

D504

D503

R509

D507

C516

R510

Q502

R518

L502

Q501

D506

PC BOARD VIEW

DISPLAY UNIT (X54-3250-11) Foil Side View (J72-0663-02)

116

D506

Q501

R518

L502

E C B

Q502

R510

C516

C515 R522

D507

D504

D503

R509

C509 C508

IC501

LCD

D502

C507

R508

4833

C506

D501

R507

R517

D505

L501

R511

R516

C501

C513

R501

R513

R515

CP501

R514

CP502

D511

TK-373G

DISPLAY UNIT (X54-3250-11) Foil Side View

.ON.feRsserddA

105CIN4 105QK4 205QL4 105DO4 205DM5 305DM5 405DM5 505DO4 605DK4 705DL4 805DL8 905DL9 015DL01 115DP4 215DO8 315DO9 415DO01 515DL7 615DO7

R502

C502

C504

D516

CP503

R512

123A

CE 5M

CL GND LMP KIN0 KIN1 KIN2 KIN3

CN501

KIN4

KOUT0 KOUT1 KOUT2 KOUT3

456B

R504

R506

R523

C503 R503

R505

D515

R524

C505

789C

0#D

R524

D515

C505

R505

C503 R503

CP503

R523

0#D

R506

D516

R512

CE 5M DI CL GND LMP KIN0 KIN1 KIN2 KIN3 KIN4 KOUT0 KOUT1 KOUT2 KOUT3 SB

123A

456B

R504

789C

C502

R502

CN501

C504

2SC4617(S)

2SB1132(Q,R)

LC75823W

48 49

Component Side

Foil Side

LEDJ72-0663-02 direction

LED direction

J72-0663-02

Component Side

Foil Side

37 38

ABCDEFGHI JKLMNOPQRS

S401

PTT

S402

LAMP

S403

MONI

J72-0811-02 B/2

TK-373G

PC BOARD VIEW

TX-RX UNIT (X57-650X-XX) Component Side View (J72-0811-02)

0-10:TK-373G K 0-11:TK-373G K2

R67

R326

R221

R220

R231

C243

R241 R235 R233

R234 C258

C249

C250

C253

R60

R61

R222

R230

R223

R71

VR1

IC17

R218

C255 C257

R65

R232

R172

C246

C268

R178

R35

R34 R31 C58

MONI

R177

LAMP

R180

BPF

PTT

GND

R207

IC1

1234

R68

C96

R70

C101

C161

R205

IC3

R64

D15

R62

R49

L44

45 1

R50 R46 C71

D22

AFO

Q15

C95

R127

C244

R59

C111

R54

C201

Q30

C173

C210

R145

R138

R139

R161

Q34

R160

C200

R166

Q33

C181

C182

C178

TXD

R185

C229

RXD

R45

Q13

R200

R55

L39

R73

C104

C159

R201

R206

C179

C176

IC11

C177

R151

C174

R135

L42

SP+

Q32

C204

CN3

SP–

ANT

L11

C186

C187

D18

R92

R130 R131

C266

MIC1

–+

IC16

CP10

R148

C254

R226

D29

R219

R239

C261

R242

8 1

C247

R240

C100

C259

IC19

C260

C206

C207

C203

D27

R156

C205

R163

IC14

Q35

R280

C278

R162

C198

C202

Q26

D28

C191

R157

C231

Q39

C199

R255

R164

R165

C141

R101

R327

R254

C138

C242

R158

C196

R261

R204

C232

R214

R150

R147 C184

R260

R198

4 558

C277 R215

R133 R137

R159

C194

C192

CP13

IC5

R259

C193

R256

100

CP14

CP15

IC10

R123

R122

C185

R146 R155 C189

C213

R176

CP18

CP16

CP17

R118

Q31

L43

R182

R249 R250

D17

Q36

R175

R153

C190

R237

R213

C239

R144

C218

D23

C245

C222

R169

C183

R212

C240

C236

R181

R154

C238

C234 C235

R210

C223

KOUT0

IC15

R143

R211

C230

R199

C225

C221

KOUT2

KOUT1

1 8

R152

R208

C226

C227

R202

C233

C224

C217

CN1

KOUT3

KIN0

KIN1

KIN2

KIN3

KIN4

GND

LMP

R171

R173

R183

R149

R179

C212

C219

R167

R174

C208

R186

R209

C271

12 22

C215

R170

C216

R184

C209

C211

R100 C162

L41 R121 R120

CP3

CP4 CP2

C165

L40

16 17

R126

50 CP5

R104

CP6

R203

CP7

CP20

CP8

IC6

C180

IC13

CP9

IC12

R140

CP12

CP11

J72-0811-02 A/2

TX-RX UNIT (X57-650X-XX) Component Side View

.ON.feRsserddA 1CIM3 3CIM5 5CIC8 6CIC8

01CID8 11CIN7 21CID7 31CIC5 41CIG7 51CIF6 61CIH4 71CII8

91CIH4 31QL6 51QM5 62QG4 03QM7 13QD4 23QO6 33QN6 43QN6 53QG9 63QE5 93QG5 51DM6 71DE4 22DM7 32DE8 72DG5 82DG4 92DH4

Pattern 1 Pattern 2 Pattern 3

Pattern 4 Pattern 5 Pattern 6

Component side

Foil side

30622M4A-410GP

100

AT29C020-90TI

AT2408N10SI2.5

TC35453F

BU4094BCFV

NJM2904V

M68732H M68732UH

24LC08BT-ISN

TC75W51FU

2SK1824

TA7368F

DTA114EE

2SK1588

DTA144EE

DTC114EE DTC144EE

2SA1362(GR)

2SC4617(S) 2SC4649(N,P)

X9C103SI

ABCDEFGHI JKLMNOPQRS

GND

PTT

LAMP

MONI

J72-0811-02 B/2

TX-RX UNIT (X57-650X-XX) Foil Side View

.ON.feRsserddA 4CIL7 7CIQ4 8CIR6 9CIR5

1QM4 2QK5 3QK4 4QJ4 5QI5 6QH5 7QK5 8QK6 9QG5

01QK3 11QL6 21QL6 41QM7 61QO3 71QM7 81QO3 91QJ6 02QP4 12QP3 22QL8 32QM8 42QD7 52QD7 72QQ4 82QQ3 73QN3 83QN3

103QG6 1DM5 2DL4 3DE5 4DL4 5DI5 6DL5 7DE6 8DG5 9DL4

01DJ5 11DL4 21DK5 31DM7 41DM8 12DR4

Pattern 1 Pattern 2 Pattern 3

Pattern 4 Pattern 5 Pattern 6

TX-RX UNIT (X57-650X-XX) Foil Side View (J72-0811-02) 0-10:TK-373G K 0-11:TK-373G K2

C26

C25

Q25

R113

MIC

Component side

Foil side

EN1

R111

+–

C144

VR2

R112

C241

Q24

C24

R110

C23

C143

C13

L17

C52

C309

C335

L311

L310

DTA114YE 2SC4226(R24) 2SA1774(S) 2SC4617(S) 2SC5108(Y) 2SC4649(N,P)

2SC4988

C20

L10

C35

R29 R28

L309

R301

C306

L312

L305

C314

C55

C57

L27

R58

TC302

C305

C54

R56

R57

R307

C275

R278

R304

TC301

L308

INT. SP/INT. MIC

C68

C53

C75

C325

R309

C316

R310

L303

C317

R303

Q301

R314

R318 C326

C276

2SK508NV(K52)

2SJ243

C262

L19

L306

C304

R321

R10

C41

C311

C303

L302

C12

C302

B C E

L304

TC303

C40

R39

R27

L8 R9

C11

R26

R24

C312

L307

C327

C307

R245

R305

R87

C126

XC62GR5012PR

PST9140NR RN47A4 RN5VL45C UPA572T

C39 C38 R25

C73

C274 R276

Q19

BPF

L35

R37 R21 C37 C36 R41

R277

C74

1 4

R85

C112

C273

R96

C135

C134

C136

L36

C29 R19

L14 R14 C30

L21

D10

R76

R95

R20

R72

C148

C137

XF1

R107

L37

C28

R33

L15

PC BOARD VIEW

TK-373G

Q28

Q21

1 23 1

Q20

R320

C142

C140

C150

R103R102

C151

M MUTE

TAO

R109

Q27

23 1

R114

S MUTE

C156

L38

C152 R115

R116

R117

TAI

C155

C153

5 1

IC7

C336

C157

C163 C164

IC9

445

C167

C166

R124

IC8

C158

R119

113

D21

PTT

SB A3

J72-0811-02 A/2

C64

R18 C27

R47

R42 C82

L22

R38

C109

C130 C124

R93 R97

C139

C90

C63

R16 C33

C16

C45

D12

C84

1345

C133

C132

C128

C125

C127

L26

R94

L30 C89

S D

C88

C22

R13

L23

R44

C110

R77

R86

C131

R99

C147

TC1

C17

R53

C123 C114

C146

R52

Q10

C72 C62

L12

Q11

R82

IC4

Q22

R106

C70

R84

TC2

L31

C18 R36

C14

C85

C94

R252

L25

C10

C81

L20

Q12

C76

R253

CD1

D11

L24

C115 C107 C108

R48

C60

R43

C333

L47

C78

Q14 Q17

C263

R79

R78

R17

L18

C15

R322

C42

D13

D14

R98

5 1

R108

R69

R105

C49

R142

CP1

Q23

R23

10 11

C44

C43

R30

C51

R22

R51

C48

+++

IC2

R80

C265

C98

CF2

CF1

R275

C272

R75R74

R274

Q38

Q37

R272

R273

R270

C32

R271 C334

C31

C86

L32

C99

R81

C87

Q16

C113

C119

GND

TONE

RAI

RAO

SM SQ MIC O

MIC I

R129

C122

R258

R128

C118

C170

C121

Q18

C120

C171

R88

R132

R89

R91

R90

TA31136FN

4241

ABCDEFGHI JKLMNOPQRS

GND

PTT

LAMP

MONI

S401

PTT

S402

LAMP

S403

MONI

J72-0811-02 B/2

TK-373G

PC BOARD VIEW

TX-RX UNIT (X57-650X-XX) Component Side View + Foil Side View (J72-0811-02)

0-10:TK-373G K 0-11:TK-373G K2

Q28

L38

R117

CP11

Q27

R140

R116

CP12

R114

R109

C192

23 1

CP13

C150

R103R102

C151

C142

Q20

C140

CP14

Q21

23 1 23 1

C193

100

R89

R91 R90

R256

CP15

C185

R88

R155 C189

C213

R176

CP18

CP16

CP17

C121

Q18

Q31

C120

L43

R182

R146

C122

GND

R249

R250

C118

D17

Q36

R153

C190

C155

SB A3

CP7

R203

CP20

5 1

CP8

C156

C180

C152 R115

C153

IC13

CP9

C336

D21

C162

C157

R100

C158

L41

R121

R119

R120

CP4

113

CP3

C167

R124

C165

C166

R126

C163

C164

CP2

IC9

50 CP5

IC8

IC7

PTT

445

CP6

IC12

L40

16 17

R104

IC6

TAI

IC5

S MUTE

J72-0811-02 A/2

R122

R259

TAO

M MUTE

IC10

R258

R123

R118

R320

R132

R144

C171

C239

SM SQ

R128

C170

C119

R175

TONE

RAO

R237

R212

R213

MIC O

MIC I

C218

D23

C245

C183

RAI

C240

C236

Q16

C113

C87

C222

R169

R154

C238

C234 C235

R210

C223

R129

Q38

R273

C32

R271 C334

C31

L32

KOUT1

KOUT0

R181

IC15

R143

R152

R81

R211

C226

C227

C230

R202

C233

R199

C224

C225

C221

Q37

R272

C86

R270

R274

R275

C272

C48

+++

IC2

CN1

KOUT3

KOUT2

KIN0

KIN1

KIN2

KIN3

KIN4

GND

LMP

R171

R173

R183

R149

C98

R179

C212

C219

R167

C99

R174

C208

R80

R208

R186

CF2

R209

C265

R75 R74

C271

12 22

C215

CF1

R170

C216

R184

C217

C209

C211

C51

R22

C44

R51

C206

C207

C203

R30

10 11

R280

C43

R156

C205

R163

IC14

Q35

C49

R23

C333

D27

CP1

R142

Q26

C278

R162

C198

D14

C202

Q23

R108

R17

L18

C231

C15

C191

R69

Q17

D13

R105

R157

C141

L47

R322

R327

Q39

C42

C78

C199

Q14

R98

R255

R164

R165

C138

D28

C242

C60

C263

R79

R78

R254

D11

R101

C232

R48

R158

R43

C115 C107 C108

R147 C184

C196

R214

L24

R52

TC2

R261

C254

R260

L31

R204

R150

Q10

C72

R198

C62

L25

C76

R226

IC16

C10

C247

558

D29

L12

C18

C277 R215

C14

R219

R36

L20

Q11

C85

C94

Q12

C70

R252

R82

R253

C81

R84

R133

R137

CP10

R240

IC4

R239

R159

Q22

R148

C261

CD1

C194

C146

R67

C100

R242

8 1

TC1

C123 C114

C131

R106

C259

IC19

C88

L26

R221

C22

C17

R53

L23 R44

R99

L30 C89

R220

R16 C33

C250

R13

C110

R77

R86

C132

R231

C260

R94

C147

C243

R241

R235

R233

R234 C258

C249

C16

C45

D12

C84

C133

C127

R326

C63

R60

R38

1345

C109 C90

R230

C128

C125

R61

L22

R222

C27

R71

C253

C130 C124

R93 R97

C139

IC17

R218

R42 C82

R223

R18

C64

VR1

R47

R232

R172 C255 C257

L15

R65

R33

C28

R107

C137

R35

L37

C246

C268

XF1

R178

R72

R76

C148

R34 R31 C58

R177

C29

R19

L14 R14 C30

R20

D10

R96

C135

C134

C136

R95

MONI

L21

C112

C273

L36

R37 R21 C37 C36 R41

C74

1 4

R85

BPF

LAMP

R180

L35

R277

BPF

C73

C274 R276

Q19

PTT

C39 C38 R25

R24

GND

R39

L307

R305

R87

C126

L8 R9

C11

R245

R26

C307

R27

C312

C327

C40

L304

R207

IC1

1234

C12

B C

R45

Q13

C302

TC303

C229

R55

C303

L302

L39

R200

R73

C311

C104

C159

R201

R10

C41

R206

C68

C262

C53

C75

R68

L19

L306

C304

C96

R70

C101

R321

L303

R303

Q301

C161

C325

R309

R64

D15

R318

IC3

C316

C317

45 1

R49

R62

R310

R50 R46 C71

R314

C326

C276

INT. SP/INT. MIC

R205

L44

D22

AFO

R56

Q15

C95

R307

C275

R278

L308

C54

R304

R127

C244

R59

C57

R57

C111

R54

TC301

C55

L27

R58

TC302

C201

C305

R145

Q30

C173

C210

R138

C314

R139

R161

C20

L10

R29 R28

Q34

R160

C200

L309

R166

C306

Q33

C181

C182

L305

C178

TXD

R185

RXD

L17

C179

C309

L312

C176

C35

R301

IC11

C335

L311

L310

C177

C13

R151

Q32

C174

R135

C52

L42

C23

C204

SP+

CN3

C143

SP–

C24

R110

C25

Q24

C241

C26

ANT

L11

C186

EN1

C187

C144

R111

Q25

D18

R113

R112

R92

R130 R131

VR2

C266

MIC1

–+

TX-RX UNIT (X57-650X-XX) Component Side + Foil Side View

.oN.feRsserddA .oN.feR sserddA 1CIM3 3CIM5 4CIH7 5CIC8 6CIC8 7CIC4 8CIB6 9CIB5

01CID8 11CIN7 21CID7 31CIC5 41CIG7 51CIF6 61CIH4 71CII8

91CIH4 1QG4 2QI5 3QI4 4QJ4 5QK5 6QL5 7QI5 8QI6 9QM5

01QI3 11QH6 21QH6 31QL6 41QG7 51QM5 61QE3 71QG7 81QE3 91QJ6 02QD4 12QD3 22QH8

32Q G8 42Q P7 52Q P7 62Q G4 72Q C4 82Q C3 03Q M7 13Q D4 23Q O6 33Q N6 43Q N6 53Q G9 63Q E5 73Q F3 83Q F3 93Q G5

103Q M6 1D G5 2D H4 3D O5 4D H4 5D K5 6D H5 7D O6 8D M5 9D H4

01D J5 11D H4 21D I5 31D G7 41D G8 51D M6 71D E4 12D B4 22D M7 32D E8 72D G5 82D G4 92D H4

● Connect 1 and 6.

Pattern 1 Pattern 2 Pattern 3

Pattern 4 Pattern 5 Pattern 6

Component side

Foil side

DTA114EE DTA114YE DTA144EE DTC114EE DTC144EE 2SA1362(GR) 2SC4226(R24) 2SC4617(S) 2SC5108(Y) 2SC4649(N,P) 2SC5010-T1

30622M4A-410GP

100

2SC4988

2SK508NV(K52)

AT2408N10SI2.5

TC35453F

2SK1588

UPA672T

2SJ243 2SK1824

AT29C020-90TI

TA7368F

PST9140NR RN47A4 RN5VL45C

UPA572T

33 34

12 11

BU4094BCFV

NJM2904V 24LC08BT-ISN

TC75W51FU

TA31136FN

X9C103SI

FP210

M68732H

M68732UH

UMG3N

A B C D E F G IH

J K L M ON P Q SR

TK-373GSCHEMATIC DIAGRAM

Note) Component marked with a dot (•) are Parts of pattern 1.

TK-373G

BLOCK DIAGRAM

TK-373G

49 50

FM IF

SYSTEM

C309

Q301

–120dBm

–118dBm

–105dBm

–107dBm

–111dBm

–109dBm

–100dBm 80mVrms

390mVrms

Q22

C131

C242

IC16

IC14

IC11

390mVrms 260mVrms

590mVrms 9.5mVrms

0.63mVrms

-17.0dBm

IC17

DAC

ALC

COMP

IDC

191815 16

C243C217

13mVrms

4mVrms

36mVrms

321mVrms 307mVrms 301mVrms 425mVrms 171mVrms

MIC

IC14

+17.9dBm

C327

-3.5dBm

RF (480.05MHz) (K2)

RF (460.05MHz) (K)

RF (480.05MHz) (K2)

RF (460.05MHz) (K)

RF (501.05MHz) (K3)

IF1 (49.95MHz) IF2 (450kHz) AF (1kHz)

IC15

AF VR

C206C239

C30

C246

C27

C14

AF (1kHz)

RF (480.05MHz) (K2)

RF (416.50MHz) (K4)

RF (460.05MHz) (K)

VCO

RXLO

D10

+2.5dBm

C12

Power Module

4.0W

AF (1kHz)

C304

+8.0dBm

C11

C173

Q30

IC4

Local

Level

410

Q19

TK-373G TK-373G

LEVEL DIAGRAM

To make measurements in the AF section, con-

nect the AC level meter. (ANT input : -53dBm,

1kHz FM, 3kHz DEV(WIDE), SP output: 50mW)

In the RF section, use a 1000pF coupling capaci-

tor. (The display shows the SSG input value re-

quired to obtain 12dB SINAD Without Local Lev el.)

AG is set to the MIC input becomes 3kHz DEV.

KNB-14 SCHEMATIC DIAGRAM SPECIFICATIONS

at 1kHz MOD. (WIDE)

To make measurements in the AF section, con-

nect the AC level meter.

In the RF section, use a 1000pF coupling ca-

pacitor.

KNB-15A SCHEMATIC DIAGRAM SPECIFICATIONS

KNB-20N SCHEMATIC DIAGRAM SPECIFICATIONS

KNB-14/KNB-15A (Ni-Cd BATTERY) / KNB-20N (Ni-MH BATTERY)

Voltage : 7.2V (1.2V x 6) Capacity : 600mAh

Breaker

(70±5

Breaker

(70±5

Breaker

(70

Diode

Discharge pin side

Breaker

(80±5

Thermistor

Charge pin side

Discharge pin side

Breaker

(80±5

Thermistor

Charge pin side

Discharge pin side

Breaker

(80

Polyswitch Thermistor

Charge pin side

Dimensions : 60.8W x 110.8H x 17.3D (mm)

(projections included) Charger and charging time: KSC-15 (normal charger), approximately 8 hours KSC-16 (rapid charger), approximately 1 hour KSC-24 (rapid charger), approximately 40 minutes Weight : 165g

Voltage : 7.2V (1.2V x 6) Capacity : 1100mAh Dimensions : 60.8W x 110.8H x 20.3D (mm)

(projections included) Charger and charging time: KSC-15 (normal charger), approximately 8 hours KSC-16 (rapid charger), approximately 2 hours KSC-24 (rapid charger), approximately 1 hour Weight : 210g

Voltage : 7.2V (1.2V x 6) Capacity : 1600mAh Dimensions : 63.8W x 110.8H x 17.2D (mm)

(projections included) Charger and charging time: KSC-24 (rapid charger), approximately 80 minutes Weight : 210g

TK-373G

KMC-17/KMC-21 (SPEAKER MICROPHONE)

KMC-17 (Speaker microphone)

KMC-17 Parts List

Ref. No.

New

parts

Parts No.

A02-0907-08 Case (Front) A02-0908-08 Case (Rear)

B09-0316-08 Cap

D10-0606-08 Lever (PTT)

E11-0421-05 Phone jack E30-3138-08 Curl cord

F07-0889-08 Silicon rubber (PTT)

G53-0569-08 Packing (MIC case)

J29-0440-08 Clip assy J39-0601-08 Packing (MIC)

N46-2605-60 Screw (Clip assy) N46-3016-60 Screw (Case) N80-2005-41 Screw (MIC unit)

S50-1415-05 Tact switch (PTT)

T07-0290-05 Loudspeaker (1W, 8Ω) T91-0534-08 Condenser MIC

Description

Re-

marks

KMC-21 (Speaker microphone)

KMC-21 Parts List

Ref. No.

New

parts

Parts No.

A02-1979-08 Case (Front) A02-0980-08 Case (Rear)

E11-0453-08 Phone jack E30-3239-08 Curl cord

F07-1414-08 Cover

K29-5077-08 Lever (PTT)

S70-0444-08 Tact switch (PTT)

T07-0335-05 Loudspeaker T91-0564-08 Condenser MIC

Description

Re-

marks

TK-373G

SPECIFICATION

General

Frequency Range.............................................................450~470MHz (K) 470~490MHz (K2)

Systems ...........................................................................Max. 32

Groups .............................................................................Max. 250 (Case of 1 system)

Channels ..........................................................................Max. 600

Channel Spacing.............................................................. 25kHz (Wide) 12.5kHz (Narrow)

PLL channel stepping ...................................................... 5kHz, 6.25kHz

Operating Voltage ............................................................ 7.5 VDC ±20%

Battery Life .......................................................................More than 4 hours at 4 watts (5-5-90 duty cycle with KNB-14 battery)

More than 8 hours at 4 watts (5-5-90 duty cycle with KNB-15A battery)

Operating Temperature range..........................................-30˚C to +60˚C (-22 ˚F to +140 ˚F)

Dimensions and Weight

With KNB-14 (7.2V 600mAh battery) ............................. 58 (2-5/16) W x 135 (5-5/16) H x 32 (1-1/4) D mm (in)

400g (0.88lbs)

With KNB-15A (7.2V 1100mAh battery)......................... 58 (2-5/16) W x 135 (5-5/16) H x 35 (1-3/8) D mm (in)

440g (0.97lbs)

Receiver (Measurements made per EIA standard EIA-RS316B)

Sensitivity

EIA 12dB SINAD ........................................................... 0.25µV (Wide)/0.28µV (Narrow)

Selectivity .........................................................................70dB (Wide)/65dB (Narrow)

Intermodulation ................................................................65dB (Wide)/60dB (Narrow)

Spurious response (Except for IF 1/2) .............................60dB

Audio Power Output .........................................................500mW

Frequency Stability...........................................................±2.5ppm

Channel Frequency Spread ............................................. 20MHz (K, K2)

Transmitter (Measurements made per EIA standard EIA 316B)

RF Power output .............................................................. 4W/1W

Spurious and Harmonics.................................................. 70dB

Modulation........................................................................16KφF3E (Wide)/11KφF3E (Narrow)

FM Noise.......................................................................... 45dB (Wide)/40dB (Narrow)

Audio Distortion................................................................ Less than 5%

Frequency Stability...........................................................±2.5ppm

Channel Frequency Spread ............................................. 20MHz (K, K2)

KENWOOD CORPORATION

14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan

KENWOOD SERVICE 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., WD1 8EB 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 L TD.

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

Kenwood TK-373G Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SYSTEM SET-UP

OPERATING FEATURES

REALIGNMENT

DISASSEMBLY FOR REPAIR

CIRCUIT DESCRIPTION

SEMICONDUCTOR DATA

DESCRIPTION OF COMPONENTS

PARTS LIST

EXPLODED VIEW

PACKING

ADJUSTMENT

PC BOARD VIEW

TK-373GSCHEMATIC DIAGRAM

BLOCK DIAGRAM

LEVEL DIAGRAM

KMC-17/KMC-21 (SPEAKER MICROPHONE)

SPECIFICATION