Kenwood TK-2118 Service manual

VHF FM TRANSCEIVER / VHF FM手持机

TK-2118

SERVICE MANUAL /

Helical Antenna (T90-0757-05)

Knob (VOL) (K29-5442-03)

Knob(ENC) (K29-5443-03)

维修手册

Knob (PTT, MONI) (K29-9027-03)

TK-2118

Panel assy (A62-0932-03)

Key top (DIAL, SCAN) (K29-9026-13)

Key top(DTMF) (K29-9028-13)

Cabinet assy (Front) (A02-3512-13)

CONTENTS

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

REALIGNMENT......................................................... 3

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

SEMICONDUCTOR DATA....................................... 17

DESCRIPTION OF COMPONENTS........................ 19

TERMINAL FUNCTION ........................................... 21

PARTS LIST............................................................. 22

EXPLODED VIEW ................................................... 29

PACKING ................................................................. 30

ADJUSTMENT......................................................... 31

PC BOARD VIEWS

DISPLAY UNIT (X41-3583-00)............................ 37

TX-RX UNIT (X57-6233-00) ................................ 39

SCHEMATIC DIAGRAM.......................................... 51

BLOCK DIAGRAM .................................................. 55

LEVEL DIAGRAM ................................................... 57

BC-20, PB-40, PB-41, BT-12 ................................... 58

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

TK-2118

概述. ............................................................................ 2

模式组合 ...................................................................... 3

电路说明 .................................................................... 11

半导体数据 ................................................................18

元件说明 .................................................................... 19

端子功能 .................................................................... 21

零件表 ....................................................................... 22

部件分解图 ................................................................29

包装 ........................................................................... 30

GENERAL / 概述

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.

调整 ........................................................................... 31

PC板视图

显示单元 (X41-3583-00) ....................................... 37

发射－接收单元 (X57-6233-00) ............................. 39

原理图 ....................................................................... 51

方块图 ....................................................................... 55

电平图 ....................................................................... 57

BC－20, PB－40, PB－41, BT-12 ............................... 58

规格 ........................................................................ 背面

引言

本手册的范围

本手册是提供给熟悉通信专业并且具有维修经验的技术人员使用的。它包括了维修该设备所需要的全部资料和现行出版日期。在出版后可能发生变动，如果需要，可以使用《维修通报》或《手册修订本》进行补充。

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.

PERSONAL SAFETY

The following precautions are recommended for personal 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.

Destnation Number of CH RF power output

C505W/2W

替换零件的订购

当订购替换零件或设备信息时，应注明完整的零件识别号码。所有的零件均有识别号码：元件、组件或机壳。如果不知道零件的号码，为了正确地识别，必须注明此元件所属的机壳或组件的号码，并对元件进行充分的说明。

个人安全

为了个人的安全，请注意下列事项：

• 在没有认真核实所有射频插头之前或有任何一个打开的插头

没有连接到相应端子上的情况下，均不要发射。

• 在电爆管附近或在易燃性气体环境中，必须关掉电源，不要

操作本设备。

• 本设备只应该由有资格的技术人员来维修。

维修服务

为了便于维修本设备，建立了完整的维修服务体系，提供了包括原理图、印刷线路板图和调整步骤在内的资料供参考。

型式信道号码射频功率输出

C50 5W/2W

TK-260 :K, K2

REALIGNMENT/ 模式组合

TK-2118

1. 各部分介绍

扬声器-

天线

PTT

MONI

q Power（电源）开关／Volume（音量）控制器

y u

按顺时针方向转动时，接通对讲机的电源。旋转调节音量。关闭对讲机电源时，按逆时针方向旋转到底。

w LED 指示灯

发射中时点亮红色，接收中时点亮绿色。接收符合对您的对讲机设定的代码静噪、选择呼叫代码或者 DTMF 信号中时，闪烁橙色。在发射中电池电压变低时闪烁红色。当电池电压降低时闪烁红色。

e 旋转编码器

旋转选择频道。进行调节电平设定时，也配合其他功能使用。

r PTT（按下通话）开关

按下后对着麦克风讲话进行发射。

t MONI（监听）键

根据如何对本键的编程，按下后监听选择的频道。此外也与

y DIAL（拨号）键

FUNC

键配合使用变更频道 QT 代码。

用于存储、确认、发射和删除 DTMF 号码。此外也与键配合使用锁定对讲机的键。

u FUNC（功能）键

按下或者按住本键开启对讲机键的其他功能。

i SCAN（扫描）键

按下本键开始或者停止扫描功能。此外也与

D IA L

F U

N C

123A 456B 789C

麦克风

SCAN

LOW

i o

MIC SP

FUNC

键配合

使用，暂时将频道闭锁在扫描之外，并且设定对讲机的显示屏照明灯的条件。

o LOW 键

按下本键切换输出功率的高和低。也可以同时使用 FUNC 键设定静噪电平和 VOX 增益。

!0!0

!0 DTMF（双音多频）键盘

!0!0

用于存储和发射 DTMF 号码。

!1!1

!1 MIC-SP 插孔

!1!1

连接另购的扬声器／麦克风。

■ 显示屏

图标说明

监听频道时出现（静噪关闭）。

当选择的频道包括在扫描序列中时显示。扫描闭锁的频道不显示本图标。

显示工作频率或频道数码、选单设定以及其他功能选择。

根据所选择的机能，显示各种数字。

当倒频功能接通时显示。

当 VOX 功能接通时显示。

接收时，该条形显示表示呼叫信号的强度（条形越多，信号越强）。发射时，表示电池电压（条形越多，电池的剩余电量越多）。

按下 FUNC 键进入功能模式后显示。

使用低功率发射时显示。

注：以上未说明的图标在本对讲机中不使用。

2. Modes

Self Programming ModeUser Mode Wireless Clone Mode

MODE FUNCTION

User Mode For normal use. Self Programming You can Program the RF frequency, Mode QT/DQT and other functions using only

the radio.

Wireless Clone Mode

Used to transfer programming data from one radio to another.

PC Mode Used for communication between the

TK-260 :K, K2

radio and a PC

PC Mode

2.模式

模式类型功能

用户模式用于一般操作。自台编程模式只用手持对讲机便可编程发射接收频

率、QT/DQT和其它功能。

无线复制模式用于从一个手持机编程数据复制到另一

个手持机。

计算机模式用于手持机与计算机之间的通信。

TK-2118

000 0

ON 1

(1) (2)

REALIGNMENT/ 模式组合

3.How to enter each mode

MODE PROCEDURE

User Mode Power ON Self Programming [MONI] + [DIAL] + POWER ON Mode (More than 2 sec) Wireless Clone mode

PC Mode received commands from PC

[MONI] + [LOW] + POWER ON (More than 2 sec)

4.Self Programming mode

After entering self-programming Mode, the radio allows 3 types of operation: Function setting / Channel setting / All Reset When self-programming is disable through using the FPU, self programming mode cannot be turned ON.

1) Function setting

You can program 3 settings.

Operation:

After entering Self-Programming Mode Press the [SCAN] key.

The LCD changes to

(1) (2)

000 0

If your radio is programmed with the selective call function, the LCD changes to (1).

When you press the PTT switch after setting the data, you continue to the next item. (Refer to page 7 item 5)

Selecting the setting items

Setting the Selective Call Code

(3 Digit)

Setting the BEEP ON or OFF

Setting the [MONI] Key Assignment

Display

(Example)

(

000 0

(

ON 1

(

ON 1

Item number

Setting contents

You can enter 3 digit code

)

(000 to 999) using the DTMF keys. This feature is available only when "Selective Call" has been activated in the radio.

OFF: No, ON: Yes

)

This item is selected using the channel selector.

0: Squelch OFF,

0 2

)

1: Monitor Toggle, 2: Monitor Momentary, OFF: OFF You can select from among the above settings. This item is selected using the channel selector.

3. 如何进入每一种模式

模式类型操作步骤

用户模式电源ON 自台编程模式 [MONI]＋[DIAL]＋电源ON (高于2秒)

无线复制模式 [MONI]＋[LOW]＋电源ON (高于2秒)

计算机模式从计算机接收指令

4. 自台编程模式

进入自台编程模式后，手持机允许三类操作：功能设置/信道设置/全部复位当使用FPU设置禁止自台编程时，便不能进入自台编程模式。

1) 功能设定

您可编程三个设置。操作：进入自台编程模式后按[SCAN]键。 LCD变为

如果您的手持机编程选择呼叫功能，则LCD变为 (1)。

当您在设置数据后按下PTT开关，您便可继续到下一个项目。（请翻阅7页项目5）

选择设置项目

设置选择呼叫编码。

(3位数字)

设置峰鸣声ON或OFF

设置监听[MONI]按键赋值

(例如)

(

000 0

(

显示

ON 1

0 2

)

设置内容

您可使用DTMF键输入3 位代码（000-999）。只有当“选择呼叫功能”已在手持机中设定有效时该功能才可用。

OFF: 否, ON: 是

该项目使用信道选择器选择。 0: 静噪关闭， 1: 监听器触发, 2: 监听器瞬时, OFF: 关您可从上述设置中选择。该项目使用信道选择器选择。

TK-260 :K, K2

TK-2118

…

REALIGNMENT/ 模式组合

2) Channel setting

Operation: After entering Self-Programming Mode Press the [LOW] key. The LCD changes to

CH 1 1

When you press the PTT switch after setting the data, you

can continue to the next Item. (Refer to page8 item 6)

Selecting the setting items

Setting the channel number

When a channel number is not set, the following items will not be selected.

Setting the receive frequency

When a receive frequency is not set ("blank" is set), the following items will not be selected. (Item numbers 3 to 12 are not selected.) When "blank" is set, you will return to "setting the channel number".

Setting the receive QT/DQT

When a channel number is not set, this item will be skipped.

Setting the transmit frequency

Setting the transmit QT/DQT

When a transmit frequency is not set, this item will be skipped.

Setting the option signalling

Setting the BUSY CH Lockout

(BCL)

Setting the Beat Shift function ON or /OFF Setting Scan DELETE / ADD

Setting Wide / Narrow Setting the SP Unmute

When option signaling is set to "0" (None), this item will be skipped.

Setting the transmit power

Display

(Example)

(

CH 1 1

(

…… 2

(

150.000 2

(

q 100.0 3

( (

Same as RX Display (This is item number "4".)

Same as

RX Display (This is item number "5".)

( (

(

( (

(

OFF 3

d 023 3 d -023 3

0 6

OFF 7

OFF 8

Add 9

0 10

0 11

H 12

)

) ) )

) )

)

) )

)

Setting contents

Channel range from 1 to

50.

Blank

100.00000MHz~549.99500MHz (VHF: 5kHz(Default) /

6.25kHz Step)∗1 Default (C): 150.000MHz

(C2): 140.000MHz

OFF QT(QT frequencies table)∗2: 67.0Hz ~ 250.3Hz DQT(DQT Normal/Inverse table) ∗2: 023 ~ 754 Normal setting DQT(DQT Normal/Inverse table) ∗2: -023 ~ -754 Inverse setting

Same content as "Setting the received frequency"

Same content as "Setting the receive QT/ DQT"

0: None 1: DTMF OFF: OFF 1: Carrier

2: QT/DQT 3: DTMF

For setting number "3"(DTMF), if of Option Signaling is changed from "DTMF" to "None" before the BCL setting is entered, the BCL setting contents will be automatically set to "OFF" (OFF).

OFF: No ON: Yes

del: Scan DELETE Add: Scan ADD

0: Narrow 1: Wide 0: Carrier or QT/DQT

1: Carrier + DTMF or QT/ DQT + DTMF

For setting number "1" (Carrier + DTMF or QT/DQT + DTMF), if Option Signaling is changed from "DTMF" to "None" before the SP Unmute setting item is entered, the SP Unmute setting contents will be automatically set to "0" (Carrier or QT/DQT).

H: High power L: Low power

∗1 Step change for setting the frequency

MHz step: Routed the Channel selector while pressing the [1] key. 5kHz or 6.25kHz step: Press the [SCAN] key

2) 信道设定

操作：进入自台编程模式后按[LOW]键。 LCD变为

CH 1 1

当您在设置数据后按下PTT开关，您便可继续到下一项。（请翻阅8页项目6）

选择设置项目

设置信道编号

当未设置信道号时，将不选择以下项目。

设置接收频率

当未设置接收频率时(设置为 "空白")，将不选择以下项目。 (不选择项目编号3-12。) 当设置为"空白"时，您将返回到"设置信道号"。

设置接收 QT/DQT

当未设置信道号时，该项目将跳过。

设置发射频率

设置传送 QT/DQT

当未设置发射频率时，该项目将跳过。

设置可选信令设置繁忙信道锁定 (BCL)

设置差拍偏移功能ON或OFF

设置扫描删除／添加扫描

设置宽／窄带设置SP不静音

当选择信令的选择被设置到 "0" (无)时，该项目将跳过。

设置发射功率

显示

(例如)

(

CH 1 1

(

……

(

150.000 2

(

OFF 3

(

q 100.0 3

(

d 023 3

(

d -023 3

与接收显示相同(该项目号为编号"4".)

与接收显示相同(该项目号为编号"5".)

(

0 6

(

OFF 7

(

OFF 8

(

Add 9

(

0 10

(

0 11

(

H 12

设置内容

)

信道范围1-50。

)

空白

100.00000MHz~549.99500MHz

)

(VHF: 5kHz(缺省) /6.25kHz Step)*1 缺省 (C): 150.000MHz

) )

)

) )

)

(C2): 140.000MHz

OFF QT(QT 频率表)*2:

67.0Hz ~ 250.3Hz DQT(DQT 正常/反向表)*2: 023 ~ 754 正常设置 DQT(DQT 正常/反向表)*2:

-023 ~ -754 反向设置与 "接收频率" 内容相同。

与 "设置接收 QT/DQT"内容相同。

0: 无 1: DTMF OFF: 关 1: 载波

2: QT/DQT 3: DTMF 对于设置 "3" (DTMF)，如果在输入BCL 设置之前可选信令设置从"DTMF"变为"无"，则BC L 设置内容将自动设置为 "OFF" (关)。

OFF: 否 ON: 是

del: 扫描删除 Add: 扫描添加

0: 窄带 1: 宽带 0: 载波或 QT/DQT

1: 载波 + DTMF或 QT/DQT + DTMF 对于设置编号"1"(载波+ DTMF或QT/DQT+DTMF)，如果在输入S P 不静音设置项目之前可选信令设置从 "DTMF"变为 "无"，则SP不静音设置内容将自动设置为"0" (载波或QT/ DQT)。

H: 高功率 L: 低功率

∗1 设置频率的步进

MHz档：按下[1]键的同时确定信道选择器的方向。 5kHz或6.25kHz档: 按下[SCAN]键

TK-260 :K, K2

TK-2118

REALIGNMENT/ 模式组合

∗2 QT/DQT frequency table

OFF/ QT/ DQT: Press the [LOW] key DQT Normal/ Inverse: Press the [DIAL] key

• QT frequencies (39 frequencies table) / QT频率 (39个频率表）

QT Frequency [Hz]

No.

1 67.0 2 69.3 3 71.9 4 74.4 5 77.0 6 79.7 7 82.5 8 85.4 9 88.5

10 91.5

频率

[Hz]

QT Frequency [Hz]

No.

11 94.8 12 97.4 13 100.0 14 103.5 15 107.2 16 110.9 17 114.8 18 118.8 19 123.0 20 127.3

• DQT table (83 codes) Normal/ Inverse / DQT (83 代码) 正常/反向表

频率

[Hz]

∗2 QT/DQT频率表

OFF/ QT/ DQT: 按下[LOW]键 DQT正常/反向: 按下[DIAL]

QT Frequency [Hz]

No.

21 131.8 22 136.5 23 141.3 24 146.2 25 151.4 26 156.7 27 162.2 28 167.9 29 173.8 30 179.9

频率

[Hz]

QT Frequency [Hz]

No.

31 186.2 32 192.8 33 203.5 34 210.7 35 218.1 36 225.7 37 233.6 38 241.8 39 250.3

频率

[Hz]

023 114 174 315 445 631 025 115 205 331 464 632 026 116 223 343 465 654 031 125 226 346 466 662 032 131 243 351 503 664 043 132 244 364 506 703 047 134 245 365 516 712 051 143 251 371 532 723 054 152 261 411 546 731 065 155 263 412 565 732 071 156 265 413 606 734 072 162 271 423 612 743 073 165 306 431 624 754 074 172 311 432 627

TK-260 :K, K2

REALIGNMENT/ 模式组合

5. Function setting / 功能设定

TK-2118

0-9 key /

CH Selector /

信道选择器

CH Selector /

信道选择器

[MONI]+[DIAL]+[POWER ON](2sec) /

Self programming mode

[SCAN]

Selective call ID

[PTT]

Beep setting

[PTT]

[MONI] key assignment

[PTT]

[FUNC]

display

SELF

000 0

ON 1

0 2

END

000 to 999 /

OFF:BEEP OFF / ON:BEEP ON /

0:Squelch OFF / 1:Monitor Toggle / 2:Monitor Momentary / OFF: no key function /

Notes:

• If you radio is not programmed with the selective call function, the Selective call ID setting will be skipped.

注释:

• 如果您的手持机未选择呼叫编码功能，则选择呼叫ID码设置

将被跳过。

TK-260 :K, K2

TK-2118

6. Channel Setting / 信道设定

REALIGNMENT/ 模式组合

[MONI]+[DIAL]+[POWER ON] (2sec) /

Self programming mode

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

CH Selector /

信道选择器

[监听]+[拨号]+[电源ON] (2秒)

自台编程模式

[LOW]

Channel select

[PTT]

RX frequency

[PTT]

RX signaling

[PTT]

TX freguency

[PTT]

TX signaling

[PTT]

Option signaling

[PTT]

Busy channel lockout

[PTT]

Beat Shift

[PTT]

Scan DEL /ADD

[PTT]

Wide/Narrow

[PTT]

SP Un mute

[PTT]

TX Power HI/LOW

[PTT]

UP Channel

繁忙信道封闭

删除/ 添加扫描

射频功率高／低

信道选择

接收频率

接收信令

发射频率

发射信令

可选信令

拍频偏移

宽/窄

SP不静音

优先信道

[FUNC]

display

SELF

CH 1 1

150.000 2

q 67.0 3

150.000 4

q 67.0 5

0 6

OFF 7

OFF 8

Add 9

0 10

0 11

H 12

END

Select channel 1 to 50 channel

选择信 1至 50

Select RX frequency*

选择接收频率

Select RX signalling

选择接收信令

Select TX frequency*

选择发射频率

Select TX signalling

选择发射信令

0: None / 无 1: DTMF / DTMF

OFF: off / 关 1: Carrier / 载波 2: QT/DQT 3: DTMF

OFF: no shift / 不偏移 On: shift / 偏移

Add: Scan ADD

添加扫描

Del: Scan DEL

删除扫描

0: Narrow /窄 1: Wide /宽

0: Carrier or QT/DQT

载波或QT/DQT

1: Carrier+DTMF or QT/DQT+DTMF 载波+DTMF或QT/DQT+DTMF

H: High Power / 高功率 L: Low Power / 低功率

Note:

注释:

1. RX TX Frequency set

设置接收发射频率

MHz step Press the [1] key and

MHz 档 按下 [1] 键并旋转信道选择器

5kHz/6.25kHz step Press the [SCAN] key 5kHz/6.25kHz 档 按下 [SCAN] 键

*6.25KHz step indication

clear/default Press [LOW] key

清除／缺省 按下 [LOW] 键

2. RX TX signalling set

设置接收发送信令

OFF QT DQT select Press the [LOW] key

OFF QT DQT 选择 按下 [LOW] 键

DQT Normal / Inverse Press the [DIAL] key

DQT 正常／反向 按下 [DIAL] 键

OFF 3 q 67.0 3 d 023 3

turn the Channel Selector

. 000 . 006 . 0125 . 018 . 025 . 031 . 0375

……

[LOW] [LOW] [LOW]

[DIAL]

d -023 3

[LOW]

TK-260 :K, K2

REALIGNMENT/ 模式组合

TK-2118

7. Wireless Clone Mode

The TK-2118 has a wireless Clone function. When the wireless clone function is disabled through using

the FPU, clone mode cannot be turned ON.

[MONI]+[LOW]+[POWER ON](2sec) [MONI]+[LOW]+[电源ON] (2秒)

Clone mode

Select freguency

Master /

Press PTT

Transmit data

主机

复制模式

选择频率

按下PTT

传送数据

RED LED / 红灯

display

150.000

154.000

CLOnE 0

CLOnE 20

7. 无线复制模式

TK-2118具有无线复制功能。当使用FPU禁止无线复制功能时，不可接通复制模式。

Default freqency / 缺省频率

You must select a frequency within this radio's range /

您必须从该手持机的范围中选择频率

Note: You can clone the programmed data

between the transceiver frequency version must be same

注释: 用户可以在手持机之间复制下表列出的  编程数据。频率必须一致

Slave / 子机

Receive data

接收数据

CLOnE 0

Green LED / 绿灯

CLOnE 20

CLOnE 95

All date is transmitted

[MONI]

所有数据已传送

END

Notes:

• Remove the antenna from the master radio.

•Attach the antenna to the slave radio.

• During cloning do not perform any action which might interrupt the cloning, such as cutting off the power to the transceiver.

8. ALL RESET / 全部复位

[MONI]+[DIAL]+[POWER ON](2sec) / [MONI]+[DIAL]+[电源ON] (2秒)

Self programming mode

PTT(first press)+[LOW]

自台编程模式

PTT(第一按下)+[LOW]

CLOnE 95

All date is received

注释注释

注释

注释注释

将天线从主机拆下。将天线从主机拆下。

•

将天线从主机拆下。

将天线从主机拆下。将天线从主机拆下。将天线装到子机上。将天线装到子机上。

•

将天线装到子机上。

将天线装到子机上。将天线装到子机上。在复制过程中不要执行可能中断复制的任何动作，如关在复制过程中不要执行可能中断复制的任何动作，如关

•

在复制过程中不要执行可能中断复制的任何动作，如关

在复制过程中不要执行可能中断复制的任何动作，如关在复制过程中不要执行可能中断复制的任何动作，如关掉手持机的电源。掉手持机的电源。

掉手持机的电源。

掉手持机的电源。掉手持机的电源。

display

SELF

rESEt

所有数据已接收

END

Notes:

• If you use this function, the Radio data is returned to the default conditions.

TK-260 :K, K2

• Some items cannot be programmed using the self programming mode.

注释注释

注释:

注释注释

如果您使用该功能，则手持机数据返回至缺省状态。如果您使用该功能，则手持机数据返回至缺省状态。

•

如果您使用该功能，则手持机数据返回至缺省状态。

如果您使用该功能，则手持机数据返回至缺省状态。如果您使用该功能，则手持机数据返回至缺省状态。有的项目不可通过使用自台编程模式来编程。有的项目不可通过使用自台编程模式来编程。

•

有的项目不可通过使用自台编程模式来编程。

有的项目不可通过使用自台编程模式来编程。有的项目不可通过使用自台编程模式来编程。

TK-2118

REALIGNMENT/ 模式组合

9.PC MODE

Preface

The TK-2118 transceiver can be programmed using a personal computer, A programming interface cable (KPG-22) and programming software.

The programming software can be used on an IBM PC or compatible. Fig-1 shows the setup of a PC for programming.

Caution:

When removing or installing the KPG-22 cable, first switch off the radio power.

Additionally, be sure to disable the VOX function, if its enabled, as it can sometimes activate from connection noise.

Connenction procedure

1. Connect the TK-2118 to the personal Computer using the

interface cable.

2. When the POWER is switched ON, you can enter user

mode.

9. 计算机模式

前言

TK-2118手持机可使用计算机，编程接口电缆(KPG-22)和编

程软件来编程。

编程软件可在IBM计算机或兼容机上使用。图１表示一台计

算机的编程设置过程。

注意注意

注意

注意注意

当拆卸或安装当拆卸或安装

当拆卸或安装

当拆卸或安装当拆卸或安装另外，一定要禁止另外，一定要禁止

另外，一定要禁止

另外，一定要禁止另外，一定要禁止

动，它有时可被噪音连接激活。动，它有时可被噪音连接激活。

动，它有时可被噪音连接激活。

动，它有时可被噪音连接激活。动，它有时可被噪音连接激活。

连接步骤

1. 使用接口电缆将TK-2118与个人电脑连接。

2. 当接通电源时，您可进入用户模式。

KPG-22KPG-22

KPG-22

KPG-22KPG-22

电缆时，首先关闭手持机的电源。电缆时，首先关闭手持机的电源。

电缆时，首先关闭手持机的电源。

电缆时，首先关闭手持机的电源。电缆时，首先关闭手持机的电源。

VOX(VOX(

VOX(

VOX(VOX(

声控增益声控增益

声控增益

声控增益声控增益

))

功能，如果它被启功能，如果它被启

)

功能，如果它被启

))

功能，如果它被启功能，如果它被启

IBM-PC

KPG-69D

RF Power meter or SSG

ANT

• KPG-22 description

(PC programming interface cable: Option) The KPG-22 cable is required to interface the TK-2118 to a computer. It has a circuit in its D-sub connector (25) pin case that converts the RS-232C logic level to TTL. The KPG-22 connects the SP/MIC connector of the TK-2118 to the Computer's RS-232C serial port.

• Programming software description

The software (KPG-69D) allows a user to program the TK2118 radios via the programming interface cable.

KPG-22

Fig. 1 / 图1

Gray Gray/Black

1.5D-XV Lead wire Gray-XV Shield wire

Tuning cable (E30-3216-05)

}

MIC

}

• KPG-22说明

(计算机编程接口电缆：可选件) KPG-22电缆用于将TK-2118与电脑连接。在其D型副插座(25 芯)中有一个电平转换电路，此电路可以把RS-232C逻辑电平转换为晶体管逻辑电平。 KPG-22将TK-2118的扬声器/ 话筒接头连接到计算机的R S 232C串行端口。

• 编程软件说明

软件(KPG-69D)允许用户通过编程接口电缆来编程TK-2118手持机。

• Programming with IBM PC

TK-260 :K, K2

If data is transferred to the transceiver from a PC with the KPG-69D, the destination data (basic radio information) for each set can be modified.

• 使用IBM计算机编程

如果数据从装有KPG-69D的计算机传送到对讲机，则可修改每组的目标数据(手持机基本设置)。

CIRCUIT DESCRIPTION / 电路说明

ANT

ANT SW

AMP

MCF

IF SYSTEM

AMP

PLL

VCO

MIC

AMP

TCXO

multiply

51.65MHz

450kHz

51.2MHz

12.8MHz

MIC

ANT

D24, D25 D26, D27

BPF

APC

TUNE

RF AMP

Q20

BPF

MIXER

Q12

MCF

XF1

IF AMP

CF1

IF, MIX, DET

IC2

AF AMP

LPF, HPF

IC306

AF PA AMP

IC309

WIDE/NARROW SW

Q316

multiply

IC300

MPU

TCXO

1st Local OSC

(PLL)

ANT SW

TK-2118

1.Frequency configuration

The receiver utilizes double conversion. The first IF is

51.65MHz and the second IF is 450kHz. The first local

oscillator signal is supplied from the PLL circuit.

The PLL circuit in the transmitter generates the necessary

frequencies. Fig. 1 shows the frequencies.

Fig. 1 Frequency configuration / 图1 电路构成

2.Receiver

The receiver is double conversion superheterodyne, designed to operate in the frequency range of 150 to 174MHz (C type), 136 to 150MHz (C2 type). The frequency configuration is shown in Fig. 1.

1) Front - end RF amplifier

An incoming signal from the antenna is applied to an RF amplifier (Q20) after passing through a transmit/receive switch circuit (D24, D25, D26, AND D27 are off) and a band pass filter (L44, L47 and L49). After the signal is amplified (Q20), the signal is filtered through a band pass filter (L34 and L40) to eliminate unwanted signals before it is passed to the first mixer. Band pass filters (L44, L47, L49, L34 and L40) have varactor diodes (D21, D22, D23, D16 and D20).

The voltage of these diodes are controlled by to track the MPU (IC300) center frequency of the band pass filter. (See Fig. 2)

1. 频率构成

接收部采用二次变频超外差方式。第一中频为51.65MHz·第二中频为450KHz。第一本振频率信号由锁相环电路(PLL)提供。发射部由锁相环电路直接产生所需要的频率。图１显示各种频率。

2.接收部

接收部为二次变频超外差方式，设计操作的频率范围是150-

174MHz (C)，136-150MHz (C2)。

1) 前端射频放大器

从天线输入的信号经过收发转换电路 (D24, D25, D26和D27断

开) 和带通滤波器 (L44, L47和L49) 后，在射频放大器 (Q20) 处放大。信号被放大后 (Q20)，在通过第一混频器之前，经过带通滤波器 (L34和L40) 滤波来消除不要的信号。带通滤波器(L44, L47, L49, L34和L40) 有变容二极管 (D21, D22, D23, D16和D20)。

这些变容二极管的电压由带通滤波器的MPU (IC300) 中心频

率控制。(参见图2)

TK-260 :K, K2

Fig. 2 Receiver section configuration / 图2 接收部构成

TK-2118

CIRCUIT DESCRIPTION / 电路说明

2) First Mixer

The signal from the RF amplifier is heterodyned with the first local oscillator signal from the PLL frequency synthesizer circuit at the first mixer (Q12) to create a 51.65MHz first intermediate frequency (1st IF) signal. The first IF signal is then fed through two monolithic crystal filters (MCFs : XF1) to further remove spurious signals.

3) IF amplifier

The first IF signal is amplified by Q6, and then enters IC2 (FM processing IC). The signal is heterodyned again with a second local oscillator signal within IC2 to create a 450kHz second IF signal. The second IF signal is then fed through a 450kHz ceramic filter (CF1) to further eliminate unwanted signals before it is amplified and FM detected in IC2.

XF1:L71-0585-05

Item Rating

Nominal center frequency 51.650MHz

Pass band width ±5.0kHz or more at 3dB

35dB stop band width ±20.0kHz or less

Ripple 1.0dB or less

Insertion loss 4.0dB or less

Guaranteed attenuation 70dB or more at fo-910kHz

Te r minal impedance 400Ω/ 2.5PF

2) 第一混频器

来自射频放大器的信号与来自锁相环频率合成器电路的第一本振信号在第一混频器 (Q12) 处混频并生成51.65MHz的第一中频 (1st IF) 信号。第一中频信号通过两个单片晶体滤波器 (MCFs: XF1) 进一步消除邻道的杂波信号。

3) 中频放大器

第一中频信号通过Q6放大，然后进入芯片IC2 (调频处理芯片)。信号在IC2中与第二本振信号再次混频生成一个450kHz的第二中频信号。在芯片I C 2 中第二本振信号被放大和鉴频之前, 通过一个450kHz陶瓷滤波器 (CF1) 滤除无用杂散信号。

XF1：L71-0585-05

项目额定值

标称中心频率 51.650MHz 通频带宽 ±5.0kHz或更大在3dB内 35dB止频带宽 ±20.0kHz或更小脉动 1.0dB或更小插入损耗 4.0dB或更小保证衰减 70dB或更大在fo-910kHz 终端阻抗 400Ω / 2.5PF

CF1:L72-0958-05

Item Rating

Nominal center frequency 450kHz

6dB band width ±6.0kHz or more

50dB band width ±12.5kHz or less

Ripple 2.0dB or less at fo ± 4kHz

Insertion loss 6.0dB or less

Guaranteed attenuation 35.0dB or more at fo ± 100kHz

Te r minal impedance 2.0 kΩ

4) AF amplifier

The recovered AF signal obtained from IC2 is amplified by IC306 (1/4), filtered by the IC306 low-pass filter (2/4) and IC306 high-pass filter (3/4) and (4/4), and de-emphasized by R404 and C363. The AF signal is then passed through a WIDE/NARROW switch (Q316). The processed AF signal passes through an AF volume control and is amplified to a sufficient level to drive a loud speaker by an AF power amplifier (IC309).

CF1：L72-0958-05

项目额定值

标称中心频率 450MHz 6dB频带宽度 ±6.0kHz或更大 50dB频带宽度 ±12.5kHz或更小脉动 2.0dB或更小插入损耗 6.0dB或更小保证衰减 35.0dB或更大终端阻抗 2.0kΩ / 3PF

4) 音频放大器

在IC2中鉴频解调出的音频信号通过IC306 (1/4) 放大，通过 IC306低通滤波器 (2/4) 以及IC306高通滤波器 (3/4) 和 (4/4) 滤波，并且通过R404和C363去加重。然后音频信号通过一个宽/ 窄转换开关 (Q316)。经过处理的音频信号通过音量控制电路再经过音频功率放大器 (IC309) 放大后、驱动扬声器。

TK-260 :K, K2

CIRCUIT DESCRIPTION / 电路说明

TK-2118

5) Squelch

Part of the AF signal from the IC enters the FM IC again, and the noise component is amplified and rectified by a filter outside amplifier Q1, and produce DC level by D1 corresponding to the noise level. The DC signal from the FM IC goes to the analog port of the microprocessor (IC300). IC300 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, IC300 sends a high signal to the MUTE and AFCO Iines and turns IC309 on through Q313, Q320, Q321, Q323 and Q324.(See Fig. 3)

IC306

AF AMP

Q316 W/N SW

IF AMP DET

BUSY

FM IF IC

MUTE

IC2

AFCO

HPF AMP

IC307

LPF

QT/DQT

5) 噪音抑制电路

来自FM IC的部分音频信号再次输入到FM IC，在放大器Q1 出来由滤波器对噪音部分进行放大和整流，并由相应于噪音电平的D1产生直流电平。直流信号进入微处理器的模拟端口 (IC300)。IC300通过检测输入电压是否高于或低于预设值来决定是否通过扬声器输出声音。要通过扬声器输出声音，IC300向静音和自动频率控制振荡器连线发送一个高电平信号并开启IC309通过Q313, Q320, Q321, Q323和Q324。(参见图3)

LPF HPF

Q313

IC309

AF PA AMP

Q324

Q321, 323, 320

IC300 MPU

Fig. 3 AF Amplifier and squelch / 图3 音频放大器和噪音抑制电路

6) Receive signaling

QT/DQT

300 Hz and higher audio frequencies of the output signal from IF IC are cut by a low-pass filter (IC307). The resulting signal enters the microprocessor (IC300). IC300 determines whether the QT or DQT matches the preset value, and controls the MUTE and AFCO and the speaker output sounds according to the squelch results.

3.PLL frequency synthesizer

The PLL circuit generates the first local oscillator signal for

reception and the RF signal for transmission.

1) PLL

The frequency step of the PLL circuit is 5 or 6.25kHz. A 12.8MHz reference oscillator signal is divided at IC1 by a fixed counter to produce the 5 or 6.25kHz reference frequency. The voltage controlled oscillator (VCO) output signal is buffer amplified by Q7, then divided in IC1 by a dual-module programmable counter . The divided signal is compared in phase with the 5 or 6.25kHz reference signal in the phase comparator in IC1. The output signal from the phase comparator is filtrered through a low-pass filter and passed to the VCO to control the

TK-260 :K, K2

oscillator frequency. (See Fig.4)

6) 接受信令

QT/DQT

来自于中频芯片输出信号的300Hz和更高的音频被低频滤波器 (Q307) 截断。所得到的信号输入微处理器 (IC300)。IC300确定QT或DQT是否匹配预设置，并且根据噪声抑制电路的结果控制MUTE和AFCO以及扬声器输出声音。

3. 锁相环频率合成器

锁相环电路生成用于接收的第一本振信号和用于发送的射频

载波信号。

1) 锁相环电路

锁相环电路的步进频率为5或6.25kHz。12.8MHz的参考振荡

器信号通过一个混合计数器在IC1中被分频并生成5或6.25kHz的参考频率。压控振荡器 (VCO) 输出的信号通过Q7缓冲放大器, 然后在I C 1 中被可编程脉冲吞除计数器分频。被分频的信号在带有5或6.25kHz参考信号的相位比较器的IC1中被比较。从相位比较器输出的信号进入一个低通滤波器后，并通过压控振荡器来控制振荡频率。(参见图4)

TK-2118

CIRCUIT DESCRIPTION / 电路说明

2) VCO

The operating frequency is generated by Q5 in transmit mode and Q4 in receive mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained from the phase comparator, to the varactor diodes (D4, D6, D8 and D9 in transmit mode and D5, D7, D10 and D11 in receive mode). The T/R pin is set high in receive mode causing Q8 and Q9 to turn Q5 off, and turn Q4 on . The T/R pin is set low in transmit mode. The outputs from Q4 and Q5 are amplified by Q7 and sent to the buffer amplifiers.

PLL IC IC1

5kHz/6.25kHz

I/N

PLL DATA

REF OSC

I/M

12.8MHz

PHASE

COMPARATOR

5kHz/6.25kHz

CHARGE

PUMP

Fig. 4 PLL circuit / 图4 锁相环电路

3) UNLOCK DETECTOR

If a pulse signal appears at the LD pin of IC1, an unlock condition occurs, and the DC voltage obtained from D2, R4, and C12 causes the voltage applied to the UL pin of the microprocessor to go low. When the microprocessor detects this condition, the transmitter is disabled, ignoring the push-totalk switch input signal. ( See Fig.5)

2) 压控振荡器

在发射模式中通过Q 5 产生操作频率，在接收模式中通过Q 4 产生操作频率。通过相位比较器到变容二极管 ( 在发射模式中为D4, D6, D8和D9，在接收模式中为D5, D7, D10和D11) 采用压控振荡器控制电压来控制振荡频率。在接收模式中，由于Q8和 Q9切断Q5并且导通Q 4，所以发射/接收管脚设置为高电平。在发射模式中，发射/ 接收管脚设置为低电平。Q 4和Q5 的输出通过Q7被放大并被发送到缓冲放大器。

D4, 6, 8, 9

LPF

D5, 7, 10, 11

TX VCO

RX VCO

BUFF AMP

Q8, 9

T/R SW

RF AMP

3) 失锁检测器

如果IC1的LD管脚上出现高电平，则产生失锁状态，并从D2, R4获得直流电压，且C12产生的提供给微处理器UL管脚的电压降低。当微处理器检测到此情况时，不能进行发射，无视通话转换开关输入信号。(参见图5)

IC1

PLL IC

Fig. 5 Unlock detector circuit / 图5 失锁检测器电路

4. Transmitter

1) Transmit audio

The modulation signal from the microphone is amplified by IC308 (A/4), passes through a preemphasis circuit, and amplified by the other IC308 (B/4) to perform IDC operation. The signal then passes through a low-pass filter (splatter fiIter) IC308 (C/4and D/4) and cuts 3kHz and higher frequencies. The resulting signal goes to the VCO through the VCO modulation terminal for direct FM modulation. (See Fig. 6)

2) QT/DQT encoder

A necessary signal for QT/DQT encoding is generated by IC300 and FM-modulated to the PLL reference signal. Since the reference OSC does not modulate the loop characteristic frequency or higher, modulation is performed at the VCO side

TK-260 :K, K2

by adjusting the balance. (See Fig. 6)

C12

IC300

MPU

4. 发射部

1) 发射音频

来自于话筒的调制信号通过IC308 (A/4) 被放大，经过一个预加重电路，并通过另一个IC308 (B/4) 放大后进行IDC处理。然后信号通过一个低通滤波器 (分离滤波器) IC308 (C/4和D/4) 并滤除比3kHz频率更高的部分。得到的信号进入压控振荡器直接进行调频调制。(参见图6)

2) QT/DQT编码器

QT/DQT编码所需的信号通过IC300产生，被锁相环电路的基准频率调整。由于基准振荡器不能对频率环路特性外的频率进行调制，因此通过分配器在压控振荡器一侧进行调制。(参见图

CIRCUIT DESCRIPTION / 电路说明

AMP

Q15

DRIVE AMP

Q18

DET

IC3

APC

Q23

Q16

APC

Q17 SW

D25, 26

ANT SW

FINAL AMP

Q22

ANT SW

D24, 27

LPF

ANT

Q14

TH1

TK-2118

MIC

IC308 (A/4)

MIC

AMP

Q322 SW

PREEMPHASIS

IC308 (B/4)

IDC

MUTE

Fig. 6 Transmit audio QT/DQT / 图6 发射音频QT/DQT

3) VCO and RF amplifier

The transmit signal obtained from the VCO buffer amplifier Q11, is amplified by Q15. This amplified signal is passed to the power amplifier, Q18 and Q22, which consists of a 2-stage FET amplifier and is capable of producing up to 5W of RF power. (See Fig.7)

4) ANT switch and LPF

The RF amplifier output signal is passed through a lowpass filter network and a transmit/receive switching circuit before it is passed to the antenna terminal. The transmit/ receive switching circuit is comprised of D24, D25, D26 and D27. D25 and D26 turned on (conductive) in transmit mode and off (isolated) in receive mode.

IC308(C/4, D/4)

LPF

(SPLATTER FILTER)

IC300

QT/DQT

VR302

MAX

DEV

VR301

BALANCE

REFERENCE

VCO

X1, IC1

OSC

(TCXO)

3) 压控振荡器和射频放大器

从压控振荡缓冲放大器(Q11)接收到的发送信号通过Q15被放大。这个放大信号通过功率放大器，Q18和Q22 (包括一个二级场效应管放大器)，并能产生５W射频功率。(参见图7)

4) 天线转换开关和LPF

在其到达天线终端之前，射频放大器输出信号通过一个低通滤波器网络和一个发射/ 接收转换电路。发射/ 接收转换电路由 D24, D25, D26和D27构成。D25和D26在发射模式下开启 (通导)，在接收模式下关闭 (隔离)。

TK-260 :K, K2

Fig. 7 APC system / 图7 自动功率控制系统

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