Kenwood TK-3148 Service Manual
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Kenwood TK-3148 Service Manual

Kenwood TK-3148 Service Manual

Uhf fm transceiver
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UHF FM TRANSCEIVER / UHF FM 手持机
TK-3148
SERVICE MANUAL /
Knob (PTT)
(K29-9131-03)
Key top
(SW1,SW2)
(K29-9132-03)
维修手册
GENERAL ....................................................................... 2
Helical Antenna
(T90-1032-25)
SYSTEM SET-UP ........................................................... 3
OPERATING FEATURES ............................................... 4
Knob (ENC)
(K29-9134-03)
REALIGNMENT .............................................................. 6
CIRCUIT DESCRIPTION ............................................... 10
Knob (VOL)
SEMICONDUCTOR DATA ........................................... 19
(K29-9133-03)
COMPONENTS DESCRIPTION ................................... 21
PARTS LIST .................................................................. 23
EXPLODED VIEW ......................................................... 31
PACKING ...................................................................... 32
ADJUSTMENT ............................................................. 33
TERMINAL FUNCTION ................................................ 52
PC BOARD VIEWS
SCHEMATIC DIAGRAM ............................................... 60
LEVEL DIAGRAM ......................................................... 65
BLOCK DIAGRAM ........................................................ 66
KSC-25 / KNB-24L ....................................................... 68
SPECIFICATIONS ......................................................... 69
Cabinet assy
(A02-3653-14)
2003-9 PRINTED IN JAPAN
©
B51-8656-00 (S) PDF
CONTENTS
TX-RX UNIT (X57-6413-01) (A/3) .......................... 54
TX-RX UNIT (X57-6413-01) (B/3),(C/3) ................. 58

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  • Page 1: Table Of Contents

    UHF FM TRANSCEIVER / UHF FM 手持机 TK-3148 维修手册 SERVICE MANUAL / 2003-9 PRINTED IN JAPAN © B51-8656-00 (S) PDF CONTENTS GENERAL ............... 2 Helical Antenna (T90-1032-25) SYSTEM SET-UP ............3 OPERATING FEATURES ..........4 Knob (ENC) (K29-9134-03) REALIGNMENT .............. 6 CIRCUIT DESCRIPTION ..........

  • Page 2: General

    TK-3148 目 录 目 录 目 录 目 录 目 录 概述 ....................2 调整 ..................... 33 系统体系 ..................3 端子功能 ..................52 操作特性 ..................4 PC 板视图 模式组合 ..................6 TX－RX 单元 (X57-6413-01) (A/3) ........54 电路说明 ..................10 TX－RX 单元...

  • Page 3: System Set-Up

    Frequency range (MHz) Choose the type of transceiver TX/RX 350~390 4.0W TK-3148 C Transceiver programming A personal computer (IBM PC or compatible), programming interface (KPG-36), and programming software (KPG-74D CPS) are required for programming. (The frequency, conventional system features, TX power HI/LOW, and signalling data are programmed for the transceiver.)

  • Page 4: Operating Features

    操作特性 OPERATING FEATURES / 1. 操作特性 1. Operation Features TK-3148 是具有集群和常规双模式的 UHF 调频手持机。 The TK-3148 is a UHF FM Radio designed in both Trunking Mode and Conventional Mode. 2. 手持机的控制和指示 2. Transceiver Controls and Indicators 2-1. 主机外形 2-1. Physical Layout 2-2.
  • Page 5 TK-3148 操作特性 OPERATING FEATURES / 2-3.键功能 2-3. Key functions 集群模式 Trunking mode 2 Rotary encoder 2 旋转编码器 旋转本编码器选择您所需要呼叫的地址 (语音呼叫/拨号) 或 Rotate this encoder to select your desired call address 者状态代码 (用于状态呼叫) 。 (voice calls/dialing) or status (status calls). 4 发射指示灯...

  • Page 6: Realignment

    TK-3148 模式组合 REALIGNMENT / 2-4. Display / 显示 2 3 4 5 6 7 8 SCN LO ① 子显示字段 1 Sub display 显示接收到信号的强度。 displays the strength of received signals. ② 显示图标 2 Programming indicator 当 AUX A 被激活时显示 。 appears while in AUX A is being activated.
  • Page 7 5-2．连接步骤 5-2. Connection procedure 1. 使用编程电缆将 TK-3148 与计算机连接。 1. Connect the TK-3148 to the personal computer with the interface cable. 2. 当接通电源时，立即进入用户模式。当 PC 机发出指令使手 2. When the POWER switch on, user mode can be entered 持机进入 PC 机模式时， “PROGRAM”出现在显示器上。...
  • Page 8 5-3. KPG-36 description （PC 机编程接口电缆∶选件） (PC programming interface cable: Option) TK-3148 需要通过 KPG-36 接口电缆与电脑连接。此接口电 The KPG-36 is required to interface the TK-3148 to the 缆的 D 型连接器（25 芯）中有一个将 RS-232C 逻辑电平转换为 computer. It has a circuit in its D-subconnector (25-pin) case TTL 电平的电路。...
  • Page 9 3. 在文件名称项中选定新固件的文件名。 3. Set the firmware to be updated by File name item. 4. 按住[S]键并接通 TK-3148 的电源。当“PROG57600”出现时， 4. Turn the TK-3148 power ON with the [S] switch held down. 松开[S]键。 When "PROG 57600" appears, release your finger from the [S] switch.

  • Page 10: Circuit Description

    TK-3148 电路说明 CIRCUIT DESCRIPTION / 1. Overview 1．综述 This transceiver is UHF/FM portable transceiver designed 本手持机是在 350 到 390MHz（C）的频率范围内工作的 UHF/ to operate in the frequency range of 350 to 390MHz (C). FM 手持式设备。 2．电路的频率构成 2. Circuit Configuration by Frequency The receiver is a double-conversion superheterodyne with 接收部采用...
  • Page 11 TK-3148 电路说明 CIRCUIT DESCRIPTION / 3-2．中频单元 3-2. IF unit 第一中频信号通过晶体滤波器 （XF200） 消除邻道的信号。 经 The first IF signal is passed through a crystal filter (XF200) 滤波的第一中频信号被第一中频放大器（Q205）放大并进入中 to remove a adjacent channel signal. The filtered first IF signal 频系统芯片（IC200） 。中频系统芯片提供第二混频器，第二本 is amplified by the first IF amplifier (Q205) and then applied to 振信号，限幅放大器，正交检测器和...
  • Page 12 TK-3148 电路说明 CIRCUIT DESCRIPTION / 3-4．音频放大器电路 3-4. Audio amplifier circuit 来自于IC200的解调信号进入静音开关 （Q204） ， 并且被IC300 The demodulated signal from IC200 goes through the mute （2/2）放大，被 IC500 高通滤波，低通滤波，高通滤波，带阻滤 switch (Q204) and is amplified by IC300 (2/2), high-pass filtered, 波和去加重。 low-pass filtered, high-pass filtered, band-eliminate filtered, 然后信号通过音频放大器...
  • Page 13 TK-3148 电路说明 CIRCUIT DESCRIPTION / 3-5．静噪电路 3-5. Squelch circuit IC200 的输出再次进入调频中频芯片，然后通过片上的带通 The output from IC200 enters FM IF IC again, then passed 滤波器。并通过带通滤波器 IC202（2/2） 。调制输入。IC202（2/ through a band-pass filter. And passed through a band-pass 2） 输出的噪音成分被 Q208 放大并且被 D201 整流生成一个相对...
  • Page 14 TK-3148 电路说明 CIRCUIT DESCRIPTION / 来自于加法放大器的输出信号再次通过数/模转换器 （IC307） The output signal from the summing amplifier passes 并进入 VCO 调制输入。 through the D/A converter (IC307) again and goes to the VCO 来自于总和放大器的其他输出信号再次通过数 / 模转换器 modulation input. （IC307）进行 BAL 调整，并通过缓冲放大器（IC302 2/2） ，然后 The other output signal from the summing amplifier passes 进入...
  • Page 15 TK-3148的VCO由两个VCO组成， 并且控制两个范围， 305.15- is applied to pin 8 of the PLL IC. 445.15MHz 和 350-390MHz。VCO 产生 405.15-425.15MHz 的频率 The TK-3148’s VCO consists of 2VCO and covers a dual range 提供给接收中的第一本振信号。在发送中，VCO 的管脚 3 变为 of the 305.15~445.15MHz and the 350~390MHz. The VCO 低电平，VCO 产生...
  • Page 16 TK-3148 电路说明 CIRCUIT DESCRIPTION / 6．控制电路 6. Control Circuit 控制电路由微处理器 （IC309） 和其外围电路组成。 微处理器 The control circuit consists of microprocessor (IC309) and 控制TX-RX单元和发送到显示单元的数据以及从显示单元发送 its peripheral circuits. It controls the TX-RX unit and transfers 的数据。IC309 主要执行下述功能∶ data to and from the display unit. IC309 mainly performs the 1) 通过...
  • Page 17 TK-3148 电路说明 CIRCUIT DESCRIPTION / 7．信令电路 7. Signalling Circuit 7-1．编码 7-1. Encode 低速率数据（QT，DQT） Low-speed data (QT,DQT) ● ● CPU 的管脚 1 输出低速率数据。信号通过低通陶瓷滤波器进 Low-speed data is output from pin 1 of the CPU. The signal 入总和放大器（IC305 1/2） 。此信号与音频信号混合，通过数 / passes through a low-pass CR filter, and goes to the summing 模转换器（IC307）进行...
  • Page 18 TK-3148 电路说明 CIRCUIT DESCRIPTION / FFSK ● FFSK ● 来自于中频芯片的 FFSK 输入信号被 IC300（1/2）放大，然后 The FFSK input signal from the IF IC is amplified by IC300 进入 IC500 的管脚 5。此信号被 IC500 中的 FFSK 解调器解调。已 (1/ 2) and goes to pin 5 of IC500. The signal is demodulated by 解调的数据进入...

  • Page 19: Semiconductor Data

    TK-3148 半导体数据 SEMICONDUCTOR DATA / 微处理器∶30620M8A-2N3GP Microprocesser : 30620M8A-2N3GP （TX-RX 单元∶IC309） (TX-RX UNIT : IC309) ■ Pin function ■ 管脚功能 端口名称 输入/输出 管脚功能 Port 管脚号 Function Name 。 1 LSDO 输出 低速率数据输出 LSDO Low speed data output. 2 HSDO 输出...
  • Page 20 TK-3148 半导体数据 SEMICONDUCTOR DATA / Port 端口名称输入 / 输出 管脚功能 管脚号 Function Name 50~59 A18~A9 闪存地址总线。 50~59 A18~A9 Flash memory address bus. 60 V ＋ 5V。 +5V. 61 A8 输出 闪存地址总线。 Flash memory address bus. 62 VSS 接地。 GND. 63-70 A7-A0 输出...

  • Page 21: Components Description

    TK-3148 元件说明 COMPONENTS DESCRIPTION / TX-RX TX-RX TX-RX 单元 TX-RX TX-RX 单元 单元 单元（ （ （ （ （ X57-6413-10 单元 X57-6413-10 X57-6413-10 X57-6413-10） ） ） ） ） X57-6413-10 TX-RX UNIT (X57-6413-10) Ref. No. 使用／功能 操作／状态 Ref. No. Use/Function Operation/Condition PLL IC...
  • Page 22 TK-3148 元件说明 COMPONENTS DESCRIPTION / Ref. No. 使用／功能 操作／状态 Ref. No. Use/Function Operation/Condition Q306 晶体管 发射发光二极管开关 Q306 TRANSISTOR TX LED switch Q307 场效应管 内 / 外 . 开关 Q307 Internal / External. switch Q308 场效应管 内 / 外 . 开关...

  • Page 23: Parts List

    TK-3148 零件表 PARTS LIST / CAPACITORS CC 45 TH 1H Capacitor value Color* CC45 010 = 1pF 0 = 22pF 100 = 10pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating Multiplier 2 = Shape ... round, square, ect.
  • Page 24 TK-3148 零件表 PARTS LIST / ∗ New Parts. indicates safety critical components. L: Scandinavia K: USA P: Canada Parts without Parts No. are not supplied. Y: PX (Far East, Hawaii) T: England E: Europe Les articles non mentionnes dans le Parts No. ne sont pas fournis.
  • Page 25 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts CK73HB1H102K CHIP C 1000PF C220 CK73HB1A104K CHIP C 0.10UF CK73HB1H471K CHIP C 470PF C221 CC73HCH1H680J CHIP C...
  • Page 26 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts C312 C92-0713-05 CHIP-TAN 10UF 6.3WV C500 CK73GB1H122K CHIP C 1200PF C313 CC73HCH1H101J CHIP C 100PF C501,502...
  • Page 27 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts L19,20 L40-3391-86 SMALL FIXED INDUCTOR(3.3UH) RK73HB1J154J CHIP R 150K J 1/16W L40-2775-92 SMALL FIXED INDUCTOR(27NH) R13-15...
  • Page 28 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R216 RK73HB1J472J CHIP R 4.7K J 1/16W R328 RK73HB1J104J CHIP R 100K J 1/16W R217 RK73HB1J564J...
  • Page 29 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts R500 R92-1368-05 CHIP R 0 OHM D307 015AZ6.8 ZENER DIODE R501 RK73HH1J913D CHIP R D 1/16W D308 NNCD6.8G...
  • Page 30 TK-3148 零件表 PARTS LIST / TX-RX UNIT (X57-6413-01) Ref. No. Address Parts No. Description Destination Ref. No. Address Parts No. Description Destination parts parts Q405 KTA2015(Y) TRANSISTOR Q406 2SJ347 Q500 DTC144EE DIGITAL TRANSISTOR Q501 UPA672T Q502 2SK1830 ERTJ0EV104H THERMISTOR TH200...

  • Page 31: Exploded View

    TK-3148 部件分解图 EXPLODED VIEW / 26x2 TX-RX UNIT (A/3) TX-RX UNIT (B/3) TX-RX UNIT (C/3) B NUT :N14-0809-04 C M2.6x4 :N30-2604-46 D M2.6x8 :N30-2608-46 E M3x6 :N30-3006-45 F M2x3.5 :N79-2035-46 G M2x5 :N83-2005-46 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 32: Packing

    TK-3148 包装 PACKING / 44.Item carton case (H52-2007-02) 9. Instruction manual (B62-1756-00) 48.Belt hook (J29-0701-05) A. Dressed screw accessory (N08-0548-04) 6.Cap (B09-0625-03) 63.Helical antenna (T90-1032-25) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 33: Adjustment

    TK-3148 调整 ADJUSTMENT / Test Equipment Required for Alignment Test Equipment Major Specifications Standard Signal Generator Frequency Range 350 to 400MHz (SSG) Modulation Frequency modulation and external modulation. Output -127dBm/0.1µV to greater than -47dBm/1mV Power Meter Input Impedance 50Ω. Operation Frequency 350 to 400MHz or more.
  • Page 34 TK-3148 调整 ADJUSTMENT / ■ 下面是调整时所需的部件 ■ The following parts are required for adjustment 1. 天线接口转换头 1. Antenna connector adapter 此手持机的天线接口使用 SMA 终端。 The antenna connector of this radio uses an SMA terminal. 使用天线接口转换头[SMA ( f ) - BNC ( f ) 或 SMA ( f ) - N ( f )] Use an antenna connector adapter [SMA(f) –...
  • Page 35 TK-3148 调整 ADJUSTMENT / 面板调谐 • Panel tuning • 2: RED (RX AF OUTPUT) / 3: BLACK (RX AF OUTPUT) / 5: WHITE (MIC INPUT) / SCREW 6: BROWN (MIC GND) / TUBE 7: BLUE (PTT SW) GND → ON /...
  • Page 36 TK-3148 调整 ADJUSTMENT / ■ Removing the front panel ■ 拆下前面板 拆下电池组、 旋钮、 天线之后， 拆下收发机背面的两个螺钉。 After removing the battery pack, knobs, and antenna, 轻轻从底部抬起底盘，然后按下图所示拔出底盘。 remove the 2 screws from the back of the transceiver. Lift the chassis away from the bottom part gently, then pull out the chassis as shown below.
  • Page 37 TK-3148 调整 ADJUSTMENT / ■ How to assemble the antenna connector and its ■ 如何组装天线连接器及其端子 天线连接器及其端子是单独提供的部件。 当更换天线连接器 terminal. 和 / 或端子时，在换上前先将其组装起来。 The antenna connector and its terminal are supplied as separate parts. When replacing the antenna connector and/ or terminal, assemble the parts prior to the replacement.
  • Page 38 ADJUSTMENT / 维修机架（机壳） Repair Jig (Chassis) 使用机壳（A-10-4060-04）维修 TK-3148。将 TX-RX 单元放置 Use jig (part No.: A-10-4060-04) for repairing the TK-3148. 在机壳上，并且拧上螺钉。 Place the TX-RX unit on the jig and fit it with screws. 在维修过程中， 当需要在TX-RX单元的电路板上检测到电压 The jig facilitates the voltage check and protects the module 时，机壳可以方便地进行电压检测，并且保护模块。...
  • Page 39 TK-3148 调整 ADJUSTMENT / 测试模式 Test Mode ■ Test mode operating features ■ 测试模式操作特性 This transceiver has a test mode. To enter test mode, 手持机具有测试模式。要进入测试模式，需要按[A]健，然后 接通电源开关。 按住[A]键直到测试信道号码和信令号码出现在 press [A] key and turn power on. Hold [A] key until test channel No. and test signalling No. appears on LCD. Test 显示器上为止。测试模式可以通过编程禁止使用。要退出测试...
  • Page 40 注释 You must adjust the frequencies in all channels as shown 用户必须调整上述所有信道中的频率，即使第 3 行的信道频 above, even though the channel frequencies in the 3 row are 率低于 TK-3148 的规格。 below the specifications of the TK-3148. 信令 Signalling Signalling No. 信令号码 None None 无...
  • Page 41 You must adjust the frequencies in all test channels as 试信道频率超出 TK-3148 的规格。 shown above, even though the test channel frequencies in the H row are below the specifications of the TK-3148. ■ Panel Tuning Mode / 面板调谐模式 HPOW xxx...
  • Page 42 TK-3148 ADJUSTMENT Common Section Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 1. Setting 1) BATT terminal voltage:7.5V 2) SSG Standard modulation [Wide] MOD:1kHz, DEV:3kHz [Narrow] MOD:1kHz, DEV:1.5kHz 2. VCO lock [Panel Test Mode] voltage...
  • Page 43 TK-3148 调整 公用部分 测量 调整 项目 条件 规格 / 备注 测试设备 单元 终端 单元 部件 方法 1. 设定 1) 电池终端 电压∶7.5V 2)SSG 标准 调制 [宽带]MOD:1kHz DEV:3kHz [窄带]MOD:1kHz DEV:1.5kHz 2. 压控振 [面板测试模式] 荡器电压 1) CH-Sig:2-1 功率仪 面板 TX-RX 4.0V ± 0.1V...
  • Page 44 TK-3148 ADJUSTMENT Transmitter Section [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 6. DQT 1) Adj item [BAL] Power meter Panel Panel Encoder Make the Balance Adjust [∗∗∗]...
  • Page 45 TK-3148 调整 发射部分［面板调谐模式除非面板测试模式已被指定］ 测量 调整 项目 条件 规格 / 备注 测试设备 单元 终端 单元 部件 方法 6. DQT 1） 调整项目[BAL] 功率仪 面板 面板 编码旋钮 使调整波形为 平衡 调整[＊＊＊] 偏差仪 通用接口 方形波。 调整 LPF:3kHz 示波器 [窄] HPF:关闭 2） 调整项目 AF VTVM [L BAL] ➞ [C BAL] ➞ [H BAL] 调整[＊＊＊]...
  • Page 46 TK-3148 ADJUSTMENT Transmitter Section [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 11. DTMF 1) Adj item [DTMF] Power meter Panel Panel Encoder 1.25kHz ±0.1kHz Deviation Adjust [∗∗∗]...
  • Page 47 TK-3148 调整 发射部分［面板调谐模式除非面板测试模式已被指定］ 测量 调整 项目 条件 规格 / 备注 测试设备 单元 终端 单元 部件 方法 11. DTMF 1） 调整项目[DTMF] 功率仪 面板 面板 编码旋钮 1.25kHz ± 0.1kHz 频偏 调整[＊＊＊] 偏差仪 通用接口 调整 LPF:15kHz 示波器 [窄] HPF:关闭 PTT:开启 AF VTVM [宽] 2）...
  • Page 48 TK-3148 ADJUSTMENT Receiver Section [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method Adjustment 1. Sensitivity 1) Adj item [SENS] Tracking Panel Panel Encoder Adjust Adjust [∗∗∗]...
  • Page 49 TK-3148 调整 接收部分［面板调谐模式除非面板测试模式已被指定］ 测量 调整 项目 条件 规格 / 备注 测试设备 单元 终端 单元 部件 方法 1. 灵敏度 1） 调整项目[SENS] 轨迹发生器 面板 面板 编码旋钮 调整 调整 调整[＊＊＊] fo=f L, f L2, f C, f H2, f H （BPF 特性） 调整点频率。参阅第 43 页上...
  • Page 50 TK-3148 ADJUSTMENT Receiver Section [Panel Tuning Mode except when Panel TEST Mode is specified.] Measurement Adjustment Specifications/ Item Condition Remark Test equipment Unit Terminal Unit Parts Method 4. RSSI 1) Adj item [LRSI] Panel Encoder After input (Low) Adjust [∗∗∗]...
  • Page 51 TK-3148 调整 接收部分［面板调谐模式除非面板测试模式已被指定］ 测量 调整 项目 条件 规格 / 备注 测试设备 单元 终端 单元 部件 方法 4. RSSI 1） 调整项目[LRSI] 面板 编码旋钮 从 SSG 输入 (低) 调整[＊＊＊] AF VTVM 通用接口 信号后，按 调整 标准信号发生器输出 示波器 [B]键，此数 [窄] 12dB SINAD 电平 值将被保存...

  • Page 52: Terminal Function

    TK-3148 TERMINAL FUNCTION / 端子功能 管脚 输入 CN No. Pin No. Name I/O Function 名称 功能 号码 号码 / 输出 TX-RX UNIT (X57-6413-01): TX-RX section TX-RX 单元（X57-6413-01） ∶TX-RX 部分 CN301 Not used Serial data input CN301 － 不使用 Serial data output 输入...
  • Page 53 TK-3148 TERMINAL FUNCTION / 端子功能 管脚 输入 CN No. Pin No. Name I/O Function 名称 功能 号码 号码 / 输出 CN400 S_DET Battery detect input CN400 S_DET 输入 电池检测输入 AUXKEY AUX key input AUXKEY 输入 AUX 按键输入 － 接地 －...
  • Page 54 TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Component side view (J72-0807-29 A/3) L314 L315 C375 R388 D302 L311 C349 C352 R371 C354 R381 Q305 R380 Q307 R364 L309 C356 R374 R368 R378 MIC– R372 R360 R383 Q301...

  • Page 55: Tx-Rx Unit (X57-6413-01) (A/3)

    TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Component side view (J72-0807-29 A/3) C910 C911 CN305 IC312 IC311 SP– C362 R319 C364 R316 C371 C313 C389 C383 SP– R309 D304 IC308 C309 L313 R314 R308 C394 C399 CP307 CP308...
  • Page 56 TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Foil side view (J72-0807-29 A/3) C329 X200 CF200 C212 L201 R226 R253 R208 C280 C225 C230 IC200 R326 R393 R331 Q201 C391 CF201 R211 C218 D203 CD200 R328 R320 IC305...
  • Page 57 TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Foil side view (J72-0807-29 A/3) L701 R232 R238 XF200 C249 L203 R276 C250 C290 C230 C232 C281 C235 L210 R235 L205 L206 R237 R230 C244 C252 C236 C240 C100 C292...
  • Page 58 TK-3148 TK-3148 PC BOARD / PC 板视图 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Component side view (J72-0807-29 A/3) TX-RX UNIT (X57-6413-01) (A/3) Component side view (J72-0807-29 A/3) L314 C910 C911 L315 CN305 C375 R388 D302 L311 IC312 IC311 SP–...
  • Page 59 TK-3148 TK-3148 PC BOARD / PC 板视图 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (A/3) Foil side view (J72-0807-29 A/3) TX-RX UNIT (X57-6413-01) (A/3) Foil side view (J72-0807-29 A/3) C329 X200 L701 CF200 R232 C212 R238 L201 XF200 R226...
  • Page 60 TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (B/3) Component side view (J72-0807-29 B/3) CN500 MMUTE MICI 5CNS AFSTB C555 AFREG1 AFREG2 TXHSD AFDAT TXAF AFMSKE RXAFI AFTRD AFRTM HSDIN AFRDT C554 RXAFO AFCLR XOUT C501 C502 R501 C503...
  • Page 61 TK-3148 PC BOARD / PC 板视图 TX-RX UNIT (X57-6413-01) (B/3) Foil side view (J72-0807-29 B/3) X500 J72-0807-29 B/3 R515 C519 C515 C536 CP500 CP501 C557 R519 R528 C556 R523 R529 R525 C527 IC500 C528 C543 C530 C529 C506 C541 R500...

  • Page 62: Schematic Diagram

    TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) 4.88V R403 RESET 330k 7.50V BATT 5M AVR F400 L400 IC401 XC6204B502MR 7.50V 7.50V 7.20V 5.04V SURGE D405 ABSORPTION VOUT RB521S-30 5M PROTECT CN400 IC400 XC61CN4202NR DETECTOR CP400 DETECTOR 47K*2 IC404 XC61CN5002NR...
  • Page 63 TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) T:3.60V R:0V 1000p C700 D1,3,7,8 0.5p(B) TX VCO TX VCO MODULATION HVC376B 100n HVC376B 4p(B) 0.5p PLL IC TX VCO T:0.80V OSCILATION R:0V CD8468 1k*2 5.05V 2SC5108(Y) CLoCK F IN RF AMP...
  • Page 64 TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) PRE-DRIVE AMP PRE-DRIVE AMP C106 D100,101 TX/RX COMMON RF AMP C103 T:1.93V R102 R106 T:87mV BUFFER AMP R:2.06V TX/RX RF SWITCH T:1.86V R:0V 1.5k T:0.72V R:1.86V 2SC5108(Y) D101 C101 R:0.76V Q100 2SC5108(Y)
  • Page 65 TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) D102 D102,103 TX FINAL AMP HVC131 STRIP LINE ANT SWITCH L710 Q106 C146 D103 TX DRIVE AMP L199 L116 2SK3476 1.8n 2.7n Q103 C164 6.8n HVC131 2SK2596 R111 C160 L114 L115 1000p 8.2n...
  • Page 66 TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) C149 L110 L111 L112 CN13 470p C151 C153 C156 LCD UNIT CN302 L320 R603 R604 SCLK R605 R606 R607 R608 SKEY R609 AKEY R610 BKEY R611 CKEY R612 LEDA R613 LEDK FRONT-END RF AMP...
  • Page 67 TK-3148 SCHEMATIC DIAGRAM / 原理图 TX-RX UNIT (X57-6413-01) T:3.60V D102 4.88V TX FINAL AMP D102,103 R:0V HVC131 ANT SWITCH R403 RESET TX DRIVE AMP Q106 STRIP LINE L710 C146 D103 C149 L110 L111 L112 1000p L116 L199 2SK3476 BATT 7.50V...

  • Page 68: Level Diagram

    TK-3148 LEVEL DIAGRAM / 电平图...

  • Page 69: Block Diagram

    TK-3148 BLOCK DIAGRAM / 方块图...
  • Page 70 TK-3148 BLOCK DIAGRAM / 方块图...

  • Page 71: Knb-24L

    TK-3148 KSC-25 / KNB-24L KSC-25 KNB-24L Battery Charger Li-ion Battery Pack 1400mAh...

  • Page 72: Specifications

    TK-3148 SPECIFICATIONS General Frequency Range RX, TX ................350 to 390MHz Channel Spacing ............... 6.25kHz/12.5kHz/25kHz Battery Voltage ..............DC 7.5V ±20% Battery Life ............... More than 9 hours at 4W (5-5-90 duty cycle with KNB-24L battery) Temprature Range ............–30˚C to +60˚C (–22˚F to + 140˚F) Dimension and Weight With KNB-24L (1400mAh battery) .........

  • Page 73: 规格

    13, Boulevard Ney, 75018 Paris, France Sales Marketing Division KENWOOD ELECTRONICS U.K. LIMITED 1 Ang Mo Kio Street 63, Singapore 569110 KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB, United Kingdom KENWOOD ELECTRONICS EUROPE B.V. Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands...

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