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Kenwood TK-2107 - Service Manual

Kenwood TK-2107
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© 2000-05 PRINTED IN JAPAN
B51-8536-00(S) 200
VHF FM TRANSCEIVER
TK-2107
SERVICE MANUAL
GENERAL.................................................................. 2
REALIGNMENT......................................................... 2
DISASSEMBLY FOR REPAIR................................... 4
CIRCUIT DESCRIPTION ........................................... 5
SEMICONDUCTOR DATA ......................................... 9
DESCRIPTION OF COMPONENTS........................ 10
PARTS LIST............................................................. 11
EXPLODED VIEW ................................................... 17
PACKING ................................................................. 18
ADJUSTMENT......................................................... 19
PC BOARD VIEWS
TX-RX UNIT (X57-6020-21) ................................ 23
SCHEMATIC DIAGRAM .......................................... 27
BLOCK DIAGRAM .................................................. 31
LEVEL DIAGRAM ................................................... 33
KNB-15A (Ni-Cd BATTERY) ................................... 34
SPECIFICATIONS ................................BACK COVER
Antenna
(T90-0733-05):M3
Cabinet assy
(A02-2448-13)
Knob(VOLUME)
(K29-5255-03)
TK-2107 (16 channels)
CONTENTS
Knob
(CHANNEL SELECTOR)
(K29-5278-03)

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Questions and Answers

  • D
    Daniel HernandezAug 1, 2025
    What to do if I cannot talk to or hear other members in my group using my Kenwood TK-2107 Transceiver?
    • R
      russellanthonyAug 1, 2025
      To ensure proper communication with your group on the Kenwood Transceiver, verify that you are using the same frequency and Quiet Talk tone as the other members. Also, make sure you are within range of the other transceivers, as distance can affect communication.
  • M
    Michael JosephAug 8, 2025
    Why my Kenwood Transceiver has no power?
    • W
      wilsongeraldAug 8, 2025
      If your Kenwood Transceiver has no power, the battery pack may be dead or not installed correctly. Try recharging or replacing the battery pack. If that doesn't work, remove the battery pack and install it again to ensure it is properly connected.
  • M
    Mr. Jay ConleyAug 16, 2025
    Why does the battery power of my Kenwood Transceiver die shortly after charging?
    • A
      Anna CabreraAug 16, 2025
      If the battery power of your Kenwood Transceiver dies shortly after charging, it's likely that the battery pack life is finished. Replace the battery pack with a new one.
  • G
    gphillipsAug 23, 2025
    How to remove other voices (besides group members) that are present on the channel of my Kenwood Transceiver?
    • S
      Stephanie GrayAug 23, 2025
      If you are hearing other voices besides your group members on the channel of your Kenwood Transceiver, change the Quiet Talk tone. Be sure to change the tone on all transceivers in your group.

Summary

GENERAL;REALIGNMENT

PERSONAL SAFETY

Recommended precautions for personal safety during operation.

REALIGNMENT MODES

Information on modes for operation and alignment.

DISASSEMBLY FOR REPAIR

Separating Case Assembly

Steps to separate the case from the chassis.

CIRCUIT DESCRIPTION

SEMICONDUCTOR DATA

Microprocessor IC403 Data

Pinout and function details for the microprocessor.

DESCRIPTION OF COMPONENTS

IC403 - Microprocessor

Description of the microprocessor IC.

PARTS LIST

ADJUSTMENT

Required Test Equipment

List of necessary test equipment for adjustments.

Adjustment Points and Frequencies

Diagram of adjustment points and list of adjustment frequencies.

Adjustment Procedures

Detailed steps for receiver and transmitter adjustments.

PC BOARD VIEW

Component Side View

Layout of components on the component side.

Foil Side View

Layout of components on the foil side.

BLOCK DIAGRAM

LEVEL DIAGRAM

RX Section Levels

Level diagram illustrating receiver signal paths and levels.

TX Section Levels

Level diagram illustrating transmitter signal paths and levels.

SPECIFICATIONS

GENERAL

General technical specifications of the transceiver.

Kenwood TK-2107 Specifications

Frequency IconFrequency
frequency range216 to 223 MHz
Power IconPower
RF power output4.8 W
operating voltage7.5 VDC ± 20 %
Operating Environment IconOperating Environment
temperature range-30 °C to + 60 °C (-22 °F to + 140 °F)
Weight and Dimensions IconWeight and Dimensions
dimensions with battery58 W x 125.5 H x 35 D mm
weight with battery380 g

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