Kenwood TK-8102 User manual

Document Copyrights
Copyright 2006 by Kenwood Corporation. All rights reserved.
No part of this manual may be reproduced, translated, distributed, or transmitted in any
form or by any means, electronic, mechanical, photocopying, recording, or otherwise, for
any purpose without the prior written permission of Kenwood.
Disclaimer
While every precaution has been taken in the preparation of this manual, Kenwood
assumes no responsibility for errors or omissions. Neither is any liability assumed for
damages resulting from the use of the information contained herein. Kenwood reserves
the right to make changes to any products herein at any time for improvement purposes.

TK-8102TK-8102
© 2001-7 PRINTED IN JAPAN
B51-8585-10 (S)281
UHF FM TRANSCEIVER
TK-8102
SERVICE MANUAL
Panel assy
(A62-0942-03)
Front glass
(B10-2668-03)
Cabinet
(A01-2178-02)
Key top
(K29-9065-01)
SPECIFICATIONS
GENERAL
Frequency Range ................................ M : 450 to 490MHz M2 : 485 to 520MHz M3 : 400 to 430MHz
Number of Channels ........................... 4 channels
Channel Spacing ................................. Wide : 25kHz Narrow : 12.5kHz
PLL Channel Stepping ........................ 5, 6.25kHz
Operating Voltage ............................... 13.6V DC ±15%
Current Drain ...................................... Less than 0.4A on standby
Less than 1.0A on receive
Less than 8.0A on transmit
Operating Temperature Range ........... –30°C to +60°C
Dimensions & Weight ........................ 160 (W) x 43 (H) x 107 (D) mm, Approx 1.0kg
Channel Frequency Spread ................ M : 40MHz M2 : 35MHz M3 : 30MHz
RECEIVER (Measurements made per EIA standard EIA/TIA-603)
Sensitivity (12dB SINAD) .................... Wide : 0.28µV Narrow : 0.35µV
Selectivity ........................................... Wide : 75dB Narrow : 65dB
Intermodulation................................... Wide : 70dB Narrow : 60dB
Spurious Response ............................. 75dB
Audio Power Output ........................... 4.0W
Frequency Stability ............................. ±2.5ppm
TRANSMITTER (Measurements made per EIA standard EIA/TIA-603)
RF Power Output ................................ 25W
Spurious and Harmonics..................... 70dB
Modulation .......................................... Wide : 16K0F3E Narrow : 11K0F3E
FM Noise ............................................ Wide : 45dB Narrow : 40dB
Audio Distortion .................................. Less than 3%
Frequency Stability ............................. ±2.5ppm
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.
Mechelsesteenweg 418 B-1930 Zaventem, 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 LTD.
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
REVISED

TK-8102TK-8102
2
249
CONTENTS / GENERAL
GENERAL
INTRODUCTION
SCOPE␣ OF␣ THIS␣ MANUAL
This manual is intended for use by experienced techni-
cians familiar with similar types of commercial grade com-
munications equipment. It contains all required service in-
formation for the equipment and is current as of this publica-
tion date. Changes which may occur after publication are
covered by either Service Bulletins or Manual Revisions,
which are issued as required.
ORDERING␣ REPLACEMENT␣ PARTS
When ordering replacement parts or equipment informa-
tion, the full part identification number should be included.
This applies to all parts : components, kits, and 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.
PERSONNEL␣ SAFETY
The following precautions are recommended for person-
nel safety :
• DO␣ NOT␣ transmit if someone is within two feet (0.6
meter) of the antenna.
• DO␣ NOT␣ transmit until all RF␣ connectors are secure and
any open connectors are properly terminated.
• SHUT this equipment when near electrical blasting caps
or while in an explosive atmosphere.
• All equipment should be properly grounded before
power-up for safe operation.
• This equipment should be serviced by only qualified tech-
nicians.
PRE-INSTALLATION␣ CONSIDERNATIONS
1. UNPACKING
Unpack the radio from its shipping container and check
for accessory items. If any item is missing, please contact
KENWOOD␣ immediately.
2. LICENSING␣ REQUIREMENTS
Federal regulations require a station license for each ra-
dio installation (mobile or base) be obtained by the equip-
ment owner. The licensee is responsible for ensuring trans-
mitter power, frequency, and deviation are within the limits
permitted by the station license.
Transmitter adjustments may be performed only by a li-
censed technician holding an FCC␣ first, second or general
class commercial radiotelephone operator’s license. There
is no license required to install or operate the radio.
CONTENTS
GENERAL ................................................................. 2
OPERATING FEATURES ......................................... 4
REALIGNMENT........................................................ 7
DISASSEMBLY FOR REPAIR .................................. 9
CIRCUIT DESCRIPTION ......................................... 10
SEMICONDUCTOR DATA ..................................... 15
DESCRIPTION OF COMPONENTS ....................... 16
PARTS LIST ............................................................ 18
EXPLODED VIEW ................................................... 26
PACKING ................................................................. 27
ADJUSTMENT ........................................................ 28
PC BOARD VIEWS
DISPLAY UNIT (X54-3340-20) ........................... 33
TX-RX UNIT (X57-6300-XX) .............................. 35
SCHEMATIC DIAGRAM ......................................... 41
BLOCK DIAGRAM................................................... 45
LEVEL DIAGRAM.................................................... 47
TERMINAL FUNCTION .......................................... 49
SPECIFICATIONS.................................BACK COVER
TERMINAL FUNCTION
CN1 (TX-RX Unit)
Pin No. Name Function
1 GND Ground
2 PTT PTT/TXD
3 HOOK Hook detection/RXD
4 ME Mic ground
5 MIC Mic signal input
6 POWER Power switch
7 LED MON Signal of MON Key control
8 LED PF Signal of PF Key control
9 LED C1 Signal of channel1 control
10 LED C2 Signal of channel2 control
11 LED R Signal of TX control
12 LED G Signal of Busy control
13 MICBL Mic backlight control
14 LED C3 Signal of channel3 control
15 LED C4 Signal of channel4 control
16 CM Mic data detection
17 KM11 Key matrix input 11
18 KM12 Key matrix input 22
19 KM13 Key matrix input 33
20 KM14 Key matrix input 44
21 KM01 Key matrix input 01
22 KM02 Key matrix input 02
23 PSB Switched B
J1 (TX-RX Unit)
Pin No. Name Function
1SP Audio signal output to internal/external speaker.
2 E Ground
J1 (Control Unit)
Pin No. Name Function
1 MBL MIC backlight control.
2 PSB 13.6V.
3 GND Ground.
4 PTT/TXD PTT.
5 ME MIC ground.
6 MIC MIC signal input.
7 HOOK/RXD Hook detection
8 CM MIC data detection.

3
TK-8102
5. INSTALLATION␣ PLANNING – CONTROL␣ STATIONS
5-1. Antenna system
Control station. The antenna system selection depends
on many factors and is beyond the scope of this manual.
Your KENWOOD␣ dealer can help you select an antenna sys-
tem that will best serve your particular needs.
5-2. Radio location
Select a convenient location for your control station radio
which is as close as practical to the antenna cable entry
point. Secondly, use your system’s power supply (which
supplies the voltage and current required for your system).
Make sure sufficient air can flow around the radio and power
supply to allow adequate cooling.
SERVICE
This radio is designed for easy servicing. Refer to the
schematic diagrams, printed circuit board views, and align-
ment procedures contained in this manual.
3. PRE-INSTALLATION␣ CHECKOUT
3-1. Introduction
Each radio is adjusted and tested before shipment. How-
ever, it is recommended that receiver and transmitter opera-
tion be checked for proper operation before installation.
3-2. Testing
The radio should be tested complete with all cabling and
accessories as they will be connected in the final installa-
tion. Transmitter frequency, deviation, and power output
should be checked, as should receiver sensitivity, squelch
operation, and audio output. QT␣ equipment operation
should be verified.
4. PLANNING␣ THE␣ INSTALLATION
4-1. General
Inspect the vehicle and determine how and where the
radio antenna and accessories will be mounted.
Plan cable runs for protection against pinching or crush-
ing wiring, and radio installation to prevent overheating.
4-2. Antenna
The favored location for an antenna is in the center of a
large, flat conductive area, usually at the roof center. The
trunk lid is preferred, bond the trunk lid and vehicle chassis
using ground straps to ensure the lid is at chassis ground.
4-3. Radio
The universal mount bracket allows the radio to be
mounted in a variety of ways. Be sure the mounting surface
is adequate to support the radio’s weight. Allow sufficient
space around the radio for air cooling. Position the radio
close enough to the vehicle operator to permit easy access
to the controls when driving.
4-4. DC␣ Power and wiring
1. This radio may be installed in negative ground electrical
systems only. Reverse polarity will cause the cable fuse
to blow. Check the vehicle ground polarity before installa-
tion to prevent wasted time and effort.
2. Connect the positive power lead directly to the vehicle
battery positive terminal. Connecting the Positive lead to
any other positive voltage source in the vehicle is not rec-
ommended.
3. Connect the ground lead directly to the battery negative
terminal.
4. The cable provided with the radio is sufficient to handle
the maximum radio current demand. If the cable must be
extended, be sure the additional wire is sufficient for the
current to be carried and length of the added lead.
GENERAL
speaker jack cap
Power input
connector
Antenna connector
NOTE
If you do not intend to use the 3.5-mm jack for the exter-
nal speaker, fit the supplied speaker-jack cap to stop dust
and sand getting in.

4
TK-8102
1. Controls and Functions
1-1. Front Panel
q(Power) switch
Press to switch the transceiver ON. Press and hold for
approximately 1 seconds to switch the transceiver OFF.
w▲ key
Press to increase the volume level.
e▼ key
Press to decrease the volume level.
r● key
PF (Programmable Function) key. The default setting of
this key is None (no function). The programmable func-
tions available for this key are listed below.
tkey
PF (Programmable Function) key. The default setting of
this key is Monitor (page 5). Other programmable func-
tions available for this key are listed below.
y1/ 2/ 3/ 4 keys
Press to select a channel from 1 to 4.
uMicrophone jack
Insert the microphone plug into this jack (the micro-
phone is an optional accessory).
iSpeaker
Internal speaker.
oPTT switch
Press this switch, then speak into the microphone to call
a station.
1-3. Auxiliary Programmable Functions:
•Emergency •Scan On/OFF
•Key Lock •Talk Around
•Monitor •Temporary Delete
•None (no function)
1-2. Microphone
Indicator Description
Light while transmitting.
Lights when a signal is detected
on the currently selected channel.
Lights while the function pro-
grammed onto its corresponding
key is activated.
Lights while the function pro-
grammed onto its corresponding
key is activated.
Lights to display the currently se-
lected channel (1~ 4)
OPERATING FEATURES
1-5. Rear panel
External
speaker jack
Power input
connector
Antenna connector
1-4. Display
qwe tr
y
u
i
o

5
TK-8102
2. Operation Features
The TK-8102 is a UHF FM radio designed to operate in
conventional format. The programmable features are sum-
marized.
3. Transceiver Controls and Indicators
3-1. Front Panel Controls
All the keys on the front panel are momentary-type push
buttons. The functions of these keys are explained below.
• POWER key
Transceiver POWER key. When the power is switched
off, all the parameters are stored in memory. When the
power is switched on again, the transceiver returns to the
previous conditions.
• CHANNEL Keys
• MONITOR key (Programmable)
•key (Programmable)
• VOLUME UP/DOWN key
When the key is pressed, the volume level is increased/
decreased and repeats if held for 200ms or longer.
• BUSY/TX LED
The BUSY indicator (Green LED) shows that the channel
is in use. The TX indicator (Red LED) shows that you are
transmitting.
3-2. Programmable Keys
The FPU (KPG-70D) enables programmable keys to se-
lect the following functions.
• Emergency
• Key Lock
• Monitor
• Scan ON/OFF
• Talk Around
• Temporary Delete
• None
• Emergency
Pressing this key for longer than 1 second causes the
transceiver to enter the emergency mode. The transceiver
jumps to the programmed "Emergency channel" and trans-
mits for 25* seconds.
The transceiver disables mic mute while transmitting.
After finishing transmission, the transceiver receivers for 5*
seconds. The transceiver Mute* the speaker while receiv-
ing. Following the above sequence, the transceiver contin-
ues to transmit and receive.
* Default value
• Key lock
Pressing this key causes the transceiver to accept entry
of only the [Vol Up/Down]*, [Key lock], Microphone [PTT],
[Monitor], [Emergency], and [Power] keys.
* Programmable
• Monitor
Used to release signalling (press once) or squelch (press
and hold for approximately two seconds) when operating as
a conventional. It is also used to reset option signalling.
OPERATING FEATURES
• Scan ON/OFF
Press this key starts scanning. Pressing this key stops
scanning.
• Talk around
Press this key, the transceiver uses the receive fre-
quency and the tone for transmission.
The operator can call the other party directly (without re-
peater). Press this key again, the talk around function goes
off.
• Temporary delete
The "Add" channel contained in the scan sequence, and
"Delete" channel is not contained. In the scan mode, this
key switches the channel delete temporarily (Press and hold
for approximately one second).
When the transceiver is turned off, the transceiver exits
the scan or switches the scan function off.
• None
Sounds error operation beep, and no action will occur.
Use this function when the transceiver is required to be
more simple operated.
4. Scan Operating
■SCAN start condition
Two or more channels must be added to all channels that
can be scanned. The transceiver must be in normal receive
mode (PTT off).
When you activate the key programmed to the scan ON/
OFF function, the scan starts. The indicator next to the pro-
grammed key LED blinks.
■Scan stop condition
The scan stops temporarily if the following conditions are
satisfied.
1) A carrier is detected, then QT/DQT matches on channels
for which receive the QT/DQT is set by the programming
software.
2) A carrier is detected on the channels for which receiving
QT/DQT is not set by the programming software or when
the monitor (signalling cancel) function is activated.
■Revert channel
The revert channel is used to transmit during scanning
and set by the programming software (KPG-70D).
1) Selected channel
The transceiver reverts to the channel before scanning or
the channel that you changed during scan.
2) Selected with talkback
The transceiver reverts to the selected channel prior to
scan initiation.
However, if a call is received on a channel other then the
selected channel and PTT is pressed before scanning re-
sume, the transceiver "talks back" on the current receive
channel.
■Scan end
When you press the key programmed to the scan func-
tion during scan mode, the scan ends.
The indicator next to the programmed key LED turns off.

6
TK-8102
■Temporary delete
It is possible to delete channel temporary during scan.
When scan stops on unnecessary channel for example by
interference of the other party, activate the delete function
(for example press and hold the key for approximately one
second), then that channel is deleted temporarily and scan
re-start immediately.
The temporary deleted channels return to pre-set delete/
add channels, when the transceiver is turned off or the scan
function is switched off.
5. Details of Features
■Time-out timer
The time-out timer can be programmed in 30 seconds
increments from 30 seconds to five minutes and off. If the
transmitter is transmitted continuously for longer than the
programmed time, the transmitter is disabled and a warning
tone sounds while the PTT button is held down. The warn-
ing tone stops when the PTT button is released.
■PTT ID
PTT ID provides a DTMF ANI to be sent with every time
PTT (beginning of transmission, end of transmission, or
both).
You can program PTT ID "on" or "off" for each channel.
The contents of ID are programmed each Radio.
The timing that the transceiver sends ID is program-
mable.
BOT : DTMF ID (Beginning of TX) is sent on beginning of
transmission.
EOT : DTMF ID (End of TX) is sent on end of transmis-
sion.
Both : DTMF ID (Beginning of TX) is sent on beginning of
transmission and DTMF ID (End of TX) is sent on end of
transmission.
■Off hook decode
If the Off hook decode function has been enabled, re-
moving and replacing the microphone on the hook has no
effect for decoding QT/DQT and option signalling.
■"TOT" pre-alert
The transceiver has "TOT" pre-alert timer. This parameter
selects the time at which the transceiver generates "TOT"
pre-alert tone before "TOT" is expired.
"TOT" will be expired when the selected time passes
from a TOT pre-alert tone.
■"TOT" re-key time
The transceiver has "TOT" re-key timer. This timer is the
time you can not transmit after "TOT" exceeded. After "TOT"
re-key time expired you can transmit again.
■"TOT" reset time
The transceiver has "TOT" reset timer. This timer is the
minimum wait time allowed during a transmission that will
reset the "TOT" count.
"TOT" reset time causes the "TOT" to continue even after
PTT is released unless the "TOT" reset timer has expired.
OPERATING␣ FEATURES
■Clear to transpond
The transceiver waits the transpond of DTMF if channel
is busy until channel open. This feature prevents the inter-
ference to other party.
6. Option Signalling (DTMF)
Built-in DTMF decoder is available for option signalling.
It is possible to use individual call, group call, Stun.
If the option signalling matches, a predetermined action
will occur.
If option signalling matches on a channel is set up with
option signalling, the channel LED will flash and option sig-
nalling will be released. The transpond or alert tone will
sound.
While option signalling matches (or if option signalling is
deactivated when you are transmitting), you can mute or
unmute QT/DQT/Carrier.
■SP Unmute
You can select the type of SP Unmute system for each
channel. The selection is as follows.
Carrier, QT/DQT:
Channel with this option will not check ID Code in order
to open its speaker.
Carrier+DTMF, QT/DQT+DTMF:
Channel that is set with this option will have to check for
ID Code in order to open its speaker.
Default:
Carrier, QT/DQT.
SP Unmute Channel Setting RX Condition Speaker
QT/DQT DTMF Condition
None Carrier Sounds
Carrier None Yes Carrier Sounds
Carrier+DTMF Sounds
Carrier+DTMF None Yes Carrier Not Sounds
Carrier+DTMF Sounds
None Carrier Not Sounds
Carrier+QT/DQT Sounds
QT/DQT Yes Carrier Not Sounds
Yes
Carrier+QT/DQT Sounds
Carrier+QT/DQT+DTMF Sounds
Carrier+DTMF Not Sounds
Carrier Not Sounds
QT/DQT+DTMF Yes Yes
Carrier+QT/DQT Not Sounds
Carrier+QT/DQT+DTMF Sounds
Carrier+DTMF Not Sounds
Note:
When QT/DQT is not used, QT/DQT and QT/DQT+DTMF
can not be selected.
When DTMF is not used, Carrier+DTMF and QT/
DQT+DTMF can not be selected.
■Auto Reset
If option signalling matches a group set up with option
signalling, option signalling is released. After matching op-
tion signalling, option signalling will temporarily reset auto-
matically.

7
TK-8102
■Stun
If the stun code matches, a predetermined action will oc-
cur. Whether option signalling is activated or not, when
stun matches on any channel, the transceiver will become
TX inhibited or TX/RX inhibited. While stun is active, if the
stun code + "#" code is received, stun will deactivate.
When stun matches, transpond will function. Alert will
not be output.
7. Audible User Feedback Tones
The transceiver outputs various combinations of tones to
notify the user of the transceiver operating state.
Refer to the help file on the KPG-70D, regarding the func-
tions that are not listed below.
■Stun on tone
When a stun code is received, transpond tone sounds.
■Stun off tone
When a stun release code is received, transpond tone
sounds.
■Group call tone
Sounds when a group call with the correct DTMF option
signalling is received, repeats 7 times. You can select yes or
no in the Alert tone level setting.
■Individual call tone
Sounds when an individual call with the correct DTMF
option signalling is received. You can select yes or no in the
Alert tone level setting.
■Key input error tone
Sounds when a key is pressed but that key cannot be
used. You can select yes or no for the optional feature's
warning tone.
■Transpond tone
Sounds when an individual call with the correct DTMF
option signalling is received. For group calls, only the group
tone will sound, not the transpond tone.
■Pre alert tone
Sounds prior to the TOT TX inhibit activation. If TOT pre
alert is set, the tone sounds at the amount of time pro-
grammed, before the TOT expires (TOT time – TOT pre alert
time = Pre alert tone sounding time). You can select yes or
no for the optional feature's warning tone.
■Transmit protection
The power module is protected against heat while trans-
mitting by making the radio cuts down TX power when the
temperature of the power module becomes higher than ref-
erence. After that, if the temperature continue to rise, trans-
mission is stopped. The power module is also protected
against over voltage by having the radio to check that the
voltage of power supply connected to the radio is not higher
than about 17V when the radio is turned on, otherwise it can
not transmit. In both cases when transmission is stopped, a
beep will continue to sound until the PTT key is released.
OPERATING␣ FEATURES / REALIGNMENT
REALIGNMENT
1. Modes
User mode
PC mode Data program-
ming mode
PC test mode PC tuning mode
Clone mode
Mode Function
User mode For normal use.
PC mode Used for communication between the
radio and PC (IBM compatible).
Data programming Used to read and write frequency data
mode and other features to and from the radio.
PC test mode Used to check the radio using the PC.
This feature is included in the FPU.
PC tuning mode Used to tune the radio using the PC.
Clone mode Used to transfer programming data from
one radio to another.
2. How to Enter Each Mode
Mode Operation
User mode Power ON
PC mode Received commands from PC
Clone mode [1]+Power ON (Two seconds)
3. PC Mode
3-1. Preface
The TK-8102 transceiver is programmed using a personal
computer, a programming interface (KPG-46) and program-
ming software (KPG-70D).
The programming software can be used with an IBM PC
or compatible. Figure 1 shows the setup of an IBM PC for
programming.
3-2. Connection Procedure
1. Connect the TK-8102 to the personal computer with the
interface cable.
2. When the Power is switched on, user mode can be en-
tered 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
blink.
In the PC mode, 4CH LEDs, [MON] LED and [ ] LED are
turned on.
Notes :
• The data stored in the personal computer must match
model type when it is written into the EEPROM.
• Attach the interface cable, then change the TK-8102 to
PC mode.

8
TK-8102 REALIGNMENT
3-4. Programming Software Description
The KPG-70D programming disk is supplied in 3-1/2" disk
format. The software on this disk allows a user to program
TK-8102 radio via a programming interface cable (KPG-46).
3-5. Programming With IBM PC
If data is transferred to the transceiver from an IBM PC
with the KPG-70D, the destination data (basic radio informa-
tion) for each set can be modified.
4. Clone Mode
Programming data can be transferred from one radio to
another by connecting them via their modular microphone
jacks. The operation is as follows (the transmit radio is the
master and the receive radio is the slave).
NOTE: Clone mode should enabled.
1. Turn the master TK-8102 power ON with the [1] key held
down. The TK-8102 [ ] LED is turned on.
2. Power on the slave TK-8102.
3. Connect the cloning cable (No. E30-3382-05) to the
modular microphone jacks on the master and slave.
4. Press the [ ] key on the master TK-8102 transceiver. The
data of the master is sent to the slave. While the master
is sending data, [TX] LED blinked. While the slave is re-
ceiving the data, 4 LEDs, [MON] LED, [ ] LED are turned
on and [BUSY] LED blinked. When cloning of data is
completed, the master [TX] LED turned off, 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. Carry out
the operation in step 2 to 4.
3-3. KPG-46 Description
(PC programming interface cable : Option)
The KPG-46 is required to interface the TK-8102 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-46 connects the modular microphone jack of
the TK-8102 to the computers RS-232C serial port.
KPG-46
IBM-PC
KPG-70D
TK-8102
Fig. 1
Adding the data password.
If the data password is set in the optional feature menu,
you must enter the password (Master transceiver) to acti-
vate a clone mode.
you can use 1, 2, 3, and 4 to configure the password. The
maximum length of the password is 10 digits.
1. [1]+Power ON.
2. [1]~[4] LED, and MON LED are turned ON.
3. Enter the password using [1]~[4] keys.
4. Press [MON] key.
5. If the password matches, the transceiver enters a clone
mode. Otherwise, transceiver beeps and returns to the
password input mode.
Cloning cable
(E30-3382-05)
Fig. 2

9
TK-8102
1. When you remove the panel, turn the transceiver up
side down. Detach the panel by lifting the tabs as
shown below.
Fig. 1
Fig. 2
DISASSEMBLY FOR REPAIR
2. To remove the cabinet, first turn the transceiver up
side down. Detach the cabinet by prying the tabs as
shown below.
3. To remove the display unit PCB, detach the PCB by
lifting at the indents of the PCB as shown below.
Fig. 3
Fig. 4
4. When mounting the front panel, match the 4 tabs of
the chassis with the panel, being sure they attach
securely.
tabs
tabs
tabs
indents
tabs
tabs

10
TK-8102
Frequency Configuration
The receiver utilizes double conversion. The first IF is
49.95MHz and the second IF is 450kHz. The first local oscil-
lator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the neces-
sary frequencies. Figure 1 shows the frequencies.
Fig. 1 Frequency configuration
Receiver System
The receiver is double conversion superheterodyne. The
frequency configuration is shown in Figure 1.
■Front-end RF Amplifier
An incoming signal from the antenna is applied to an RF
amplifier (Q26) after passing through a transmit/receive
switch circuit (D31 and D32 are off) and a BPF (L36, L38,
L48, L49 and varactor diodes: D25, D26, D28). After the
signal is amplified (Q26), the signal is filtered by a BPF (L30,
L32 and varactor diodes: D21, D22) to eliminate unwanted
signals before it is passed to the first mixer.
The voltage of these diodes are controlled by tracking the
CPU (IC6) center frequency of the band pass filter. (See Fig. 2)
■First Mixer
The signal from the RF amplifier is heterodyned with the
first local oscillator signal from the PLL frequency synthe-
sizer circuit at the first mixer (Q21) to create a 49.95MHz
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.
■IF Amplifier
The first IF signal is amplified by Q19, and the enters IC5
(FM processing IC). The signal is heterodyned again with a
second local oscillator signal within IC5 to create a 450kHz
second IF signal. The second IF signal is then fed through a
450kHz ceramic filter (Wide : CF1, Narrow : CF2) to further
eliminate unwanted signals before it is amplified and FM de-
tected in IC5.
Item Rating
Nominal center frequency 49.95MHz
Pass bandwidth ±5.0kHz or more at 3dB
35dB stop bandwidth ±20.0kHz or less
Ripple 1.0dB or less
Insertion loss 5.0dB or less
Guaranteed attenuation 80dB or more at fo±1MHz
Spurious : 40dB or more within fo±1MHz
Terminal impedance 350Ω/ 5.5pF
Table 1 Crystal filter (L71-0591-05) : XF1
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±6.0kHz or more
50dB bandwidth ±12.5kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 35.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 2 Ceramic filter (L72-0993-05) : CF1
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±4.5kHz or more
50dB bandwidth ±10.0kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 55.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 3 Ceramic filter (L72-0994-05) : CF2
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±4.5kHz or more
50dB bandwidth ±10.0kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 60.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 4 Ceramic filter (L72-0999-05) : CF2
Fig. 2 Receiver system
CIRCUIT DESCRIPTION
ANT
SW
RF
AMP
1st
MIX
AF
PA
TCXO
MIC
AMP
X3
multiply
RF
AMP
POWER
AMP
CF 450kHz
MCF
49.95MHz
IF SYSTEM
PLL/VCO
16.8MHz
50.4MHz
ANT
RX
TX
SP
MIC
SW
ANT
L36,38,48,49
D25,26,28
BPF
Q26
RF AMP
Q19
IF AMP
IC3
D/A CONVERTER
Q21
MIX
XF1
MCF
D30,31,32
ANT
SW
IC3
D/A
Q6
X3 multiply
X1
TCXO
IC5
IF system
1st local
OSC (VCO/PLL)
DEO
CF1 (Wide)
CF2 (Narrow)
TV
CPU
L30,32
D21,22
BPF

11
TK-8102
■Wide/Narrow Changeover Circuit
The Wide port (pin 92) and Narrow port (pin 91) of the
CPU is used to switch between ceramic filters. When the
Wide port is high, the ceramic filter SW diodes (D13, D15)
cause CF1 to turn on to receive a Wide signal.
When the Narrow port is high, the ceramic filter SW diodes
(D13, D15) cause CF2 to turn on to receive a Narrow signal.
■AF Signal System
The detection signal from IF IC (IC5) goes to D/A con-
verter (IC3) to adjust the gain and is output to AF filter (IC10)
for characterizing the signal. The AF signal output from IC10
and the DTMF signal, BEEP signal are summed and the re-
sulting signal goes to the D/A converter (IC3). The AFO out-
put level is adjusted by the D/A converter. The signal output
from the D/A converter is input to the audio power amplifier
(IC102). The AF signal from IC102 switches between the
internal speaker and speaker jack (J1) output.
■Squelch Circuit
The detection output from the FM IF IC (IC5) passes
through a noise amplifier (Q18) to detect noise. A voltage is
applied to the CPU (IC6). The CPU controls squelch accord-
ing to the voltage (SQIN) level. The signal from the RSSI pin
of IC5 is monitored. The electric field strength of the re-
ceive signal can be known before the SQIN voltage is input
to the CPU, and the scan stop speed is improved.
FIg. 4 AF signal system
Fig. 5 Squelch circuit
CIRCUIT DESCRIPTION
Fig. 3 Wide/Narrow changeover circuit
Narrow
IC6 91pin
IF_IN MIX_O
IC5
IF System
CF2
(Narrow)
CF1
(Wide)
R74 R78
R77
R73
D13 D15
Wide
IC6 92pin
D/A
CONV.
AF
Filter
D/A
CONV.
IC3 IC10 IC3
DEO AF PA
IC102 SP
IF IC
IC5
Q18
NOISE AMP
D18IC5 IC6
AF
RSSI
DET
CPU
IF
SYSTEM
SQIN
RSSI
PLL Frequency Synthesizer
The PLL circuit generates the first local oscillator signal
for reception and the RF signal for transmission.
■PLL
The frequency step of the PLL circuit is 5 or 6.25kHz. A
16.8MHz reference oscillator signal is divided at IC1 by a
fixed counter to produce the 5 or 6.25kHz reference fre-
quency. The voltage controlled oscillator (VCO) output sig-
nal is buffer amplified by Q15, then divided in IC1 by a dual-
module programmable counter. The divided signal is com-
pared in phase with the 5 or 6.25kHz reference signal in the
phase comparator in IC1. 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. 6)
■VCO
The operating frequency is generated by Q11 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 (D10 and
D12 in transmit mode and D9 and D11 in receive mode).
The TX/RX pin is set low in receive mode causing Q12 and
Q7 to turn Q11 off, and turn Q10 on. The TX/RX pin is set
high in transmit mode. The outputs from Q10 and Q11 are
amplified by Q15 and sent to the RF amplifiers.

12
TK-8102
D10,12
Q11
TX VCO
Q15
BUFF
AMP
D9,11
Q10
RX VCO
Q7,12
T/R SW
Charge
pump
LPF
Phase
comparator
1/M
1/N 5kHz/6.25kHz
5kHz/6.25kHz
REF
OSC
16.8MHz
PLL
DATA
IC1 : PLL IC
Q3
AMP
Fig. 6 PLL circuit
■Unlock Circuit
During reception, the 8RC signal goes high, the 8TC sig-
nal goes low, and Q29 turns on. Q31 turns on and a voltage
is applied to the collector (8R). During transmission, the
8RC signal goes low, the 8TC signal goes high and Q30
turns on. Q33 turns on and a voltage is applied to 8T.
The CPU in the control unit monitors the PLL (IC1) LD
signal directly. When the PLL is unlocked during transmis-
sion, the PLL LD signal goes low. The CPU detects this
signal and makes the 8TC signal low. When the 8TC signal
goes low, no voltage is applied to 8T, and no signal is trans-
mitted.
IC6
CPU
Q29
SW
Q31
SW
IC1
PLL
Q30
SW
Q33
SW
LD
8RC
8C
8R 8T
8TC
PLL lock
: LD "H"
Fig. 7 Unlock circuit
Q39
RF AMP
2SC5108
(Y)
Q23
RF AMP
2SC3357
Q25
ANT
RF AMP
2SC3357
IC101
POWER AMP
S-AU27AM(K3)
Q20
RF
2SC4649
(N,P)
IC3 Q11
D/A
CONVERTER
M62363FP
X1
TCXO
16.8MHz
VCO
2SK508NV
(K52)
IC1
PLL
MB15A02
Q15
BUFFER
2SC5108
(Y)
Q3
RF AMP
2SC4649
(N,P)
IC4
BUFFER
NJM2902V
IC3
D/A
CONVERTER
M62363FP
IC22IC21(1/2)MIC
MIC/IDC
NJM2100V
Splatter
FILTER
NJM2904V
IC6 IC3
MIC KEY
INPUT
CPU
784214GC
D/A
CONVERTER
M62363FP
IC4
SUM AMP
NJM2902V
Fig. 8 Transmitter system
Transmitter System
■Outline
The transmitter circuit produces and amplifies the de-
sired frequency directly. It FM-modulates the carrier signal
by means of a varicap diode.
■Power Amplifier Circuit
The transmit output signal from the VCO passes through
the transmission/reception selection diode (D19) and ampli-
fied to a specified level of the power module (IC101) by the
drive block (Q23, Q25 and Q39). The amplified signal goes
to a low-pass filter. The low-pass filter removes unwanted
high-frequency harmonic components, and the resulting sig-
nal is goes the antenna terminal.
CIRCUIT DESCRIPTION

13
TK-8102
■APC Circuit
The automatic transmission power control (APC) circuit
detects part of a power module output with a diode (D34,
D36) and applies a voltage to IC12. IC12 compares the APC
control voltage (PC) generated by the D/A converter (IC3)
and DC amplifier (IC4) with the detection output voltage to
control Q27 and Q101, generates DB voltage from B volt-
age, and stabilizes transmission output.
The APC circuit is configured to protect over current of
the power module due to fluctuations of the load at the an-
tenna end and to stabilize transmission output at voltage
and temperature variations.
■Memory Circuit
The transceiver has an 8k-bit EEPROM (IC7). The
EEPROM contains adjustment data. The CPU (IC6) controls
the EEPROM through three serial data lines.
Control Circuit
The CPU carries out the following tasks:
1) Controls the WIDE, NARROW, TX/RX outputs.
2) Adjusts the AF signal level of the AF filter (IC10) and turns
the filter select compounder on or off.
3) Controls the DTMF decoder (IC9).
4) Controls the display unit.
5) Controls the PLL (IC1).
6) Controls the D/A converter (IC3) and adjusts the volume,
modulation and transmission power.
Fig. 9 APC circuit
Fig. 10 Control circuit
■Display Circuit
The CPU (IC6) controls the display LEDs. When the trans-
ceiver is busy, the LEDG line goes high, Q4 turns on and the
green LED (D11) lights. In transmit mode, the LEDR line
goes high, Q8 turns on and the red LED (D12) lights. Backlit
LEDs (D1~D4) are provided.
When a function key (MON, PF, C1, C2, C3 or C4) is se-
lected, its respective line goes high (LED MON, LED PF,
LED C1, LED C2, LED C3 or LED C4), the switch connected
to that line turns on and the amber LED lights.
Fig. 11 Memory circuit
CIRCUIT DESCRIPTION
RF
AMP
Q39,23
RF
AMP
Q25
POWER
MODULE
IC101
APC
DRIVER
Q101
DB
+B
Q27
APC
CONTROL
DC
AMP
IC4
ANT
SW
D30,31,32
LPF
ANT
POWER
DET
D34,36
IC12
APC
CONTROL
D19
PC
IC3
3pin
IC3
D/A
converter
IC1
PLL
IC9
DTMF
DECO.
IC6
CPU
DTMDAT
DTMCLK
DTMSTD
DAST
CNTDT
CNTCK
PLLE
DT
CK
EEPCK
IC6
CPU
IC7
EEPROM
EEPDT
EEPWP
Q1
SW
LEDMON
IC6 CPU
D5
Q5
SW
LEDPF
D6
Q2
SW
LEDC1
D7
Q6
SW
LEDC2
D8
Q3
SW
LEDC3
D9
Q7
SW
LEDC4
D10
Q4
SW
LEDG
D11
Q8
SW
LEDR
D12
Q10
SW
Q9
SW
MICBL
D1~4
■Key Matrix Circuit
The TK-8102 front panel has function keys. Each of them
is connected to a cross point of a matrix of the KMI1 to
KMO2 ports of the microprocessor. The KMO1 to KMO2
ports are always high, while the KMI1 to KMI4 ports are al-
ways low.
The microprocessor monitors the status of the KMI1 to
KMO2 ports. If the state of one of the ports changes, the
microprocessor assumes that the key at the matrix point
corresponding to that port has been pressed.
IC6
CPU
KMI1
KMI2
KMI3
KMI4
KMO2
KMO1
C1 C2 C3 C4
VOL
UD
VOL
DN PF MON
Fig. 12 Display circuit
Fig. 13 Key matrix circuit

14
TK-8102
■Encode
The QT and DQT signals are output from QT/DQT of the
CPU (IC6) and summed with the external pin DI line by the
summing amplifier (IC4) and the resulting signal goes to the
D/A converter (IC3). The DTMF and signal is output from
DTMF of the CPU and goes to the DIA converter (IC3). The
signal is summed with a MIC signal by the summing ampli-
fier (IC4), and the resulting signal goes to the D/A converter
(IC3).
The D/A converter (IC3) adjusts the MO level and the bal-
ance between the MO and QT/DQT levels. Part of a QT/
DQT signal is summed with MO and the resulting signal
goes to the VCOMOD pin of the VCO. This signal is applied
to a varicap diode in the VCO for direct FM modulation.
■Decode
■D/A Converter
The D/A converter (IC3) is used to adjust MO modulation,
AF volume, TV voltage, FC reference voltage, and PC
POWER CONTROL voltage level.
Adjustment values are sent from the CPU as serial data.
The D/A converter has a resolution of 256 and the following
relationship is valid:
D/A output = (Vin – VDAref) / 256 x n + VDAref
Vin: Analog input
VDAref: D/A reference voltage
n: Serial data value from the microprocessor (CPU)
Power Supply Circuit
When the POWER switch on the display unit is pressed,
the power port on the display unit which is connected to
CPU port 18 (POWER), goes low, then CPU port 93 (SBC)
goes high, Q34 turns on, SB SW (Q42) turns on and power
(SB) is supplied to the radio.
This circuit has an overvoltage protection circuit. If a DC
voltage of 18 V or higher is applied to the power cable, D39
turns on and a voltage is applied to the base of Q38. This
voltage turns Q38 on and turns Q34 and SB off.
• QT/DQT/DTMF
The signal (DEO) passes through two low-pass filters of
IC11, goes to QTIN of the CPU (IC6) to decode QT, DQT.
The DTMF signal is decoded by a dedicated IC (IC9) and the
resulting signal is sent to the CPU (IC6) as serial data.
CIRCUIT DESCRIPTION
Fig. 14 Encode
Fig. 15 Decode
X1
TCXO
IC3
D/A VCO
IC4
SUM
AMP
IC4
SUM
AMP
IC3
D/A
IC1
PLL
TCXO
MOD
VCO
MOD
HT
DI
QT/DQT
DTMF
IC6
CPU
IC6
CPU
IC11(2/2)
LPF
IC11(1/2)
LPF
QTIN
IC9
DTMF
DECO.
STD
SD
ACK
DEO
Q16
SW
Q42
SW
Q34
SW
Q38
SW
IC17
AVR
D39
B
IC15
RESET
SBC
IGN
INT
5M
IC6
CPU
POWER
SW
POWER
RESET
5M
IC18
INT
B
IGN
Fig. 16 Power supply circuit

15
TK-8102
SEMICONDUCTOR DATA
■Terminal function
Pin No. Name I/O Function
1NC I
2 DTMOSC O DTMF IC Clock Control
3 PLLE O PLL IC Chip Select
4 EVLLD O E-Volume LD
5 DTMCK O DTMF Dec IC Clock
6 DTMDT I/O DTMF Dec IC Data
7 UL O Unlock Detect
8 BSHIFT O Clock Shift
9 VDD -
10 X2 - X’TAL(7.3728MHz)
11 X1 - X’TAL(7.3728MHz)
12 VSS - GND
13 NC - OPEN
14 NC - GND
15 RESET - CPU RESET
16 INT I uCOM Stop
17 DMTSDT I DTMF Dec IC STD
18 POWER I Power Key Input
19 IGN I Ignition
20 TX/RX O TX/RX
21 LEDMON O LED for MON Key
22 LEDPF O LED for PF Key
23 AVDD - +5V
24 AVREF - +5V
25 QTIN I QT/DQT Input
26 SQIN I Squelch Input
27 RSSI I RSSI Input
28 PWRPRCT I Power Protect
29 BATT I Battery Voltage
30 TEMP1 I Temperature1
31 TEMP2 I Temperature2
32 TEMP3 I Temperature3
33 AVSS - GND
34 DTM/BEEP O DTMF/Beep Output
35 QT/DQT O QT/DQT Output
36 AVREF - +5V
37 FNC1 I/O Function Port1
38 FNC2 I/O Function Port2
39 HOOK I Hook
40 RXD I From FPU
41 TXD O To FPU
42 PTT I PTT Key
43 FNC3 I/O Function Port3
44 FNC4 I/O Function Port4
45 FNC5 I/O Function Port5
46 FNC6 I/O Function Port6
47 FNC7 I/O Function Port7
Pin No. Name I/O Function
48 FNC8 I/O Function Port8
49 NC I
50 MUTE1 O AF Mute
51 MUTE2 O Speaker Mute
52 MUTE3 O AF AMP SW
53 DT O Common Data
54 CK O Common Clock
55 NC I
56 EEPCK O EEPROM Clock
57 EEPDT I/O EEPROM Data
58 EEPWT O EEP Write Protect
59 DST1 I Destination 1
60 DST2 I Destination 2
61 DST3 I Destination 3 (Open)
62 NC I
63 24VDET I 24V Detect
64 NC I
65 LEDC1 O LED for CH1 Key
66 LEDC2 O LED for CH2 Key
67 LEDR O TX LED
68 LEDG O Busy LED
69 MICBL O Mic Back Light
70 LEDC3 O LED for CH3 Key
71 LEDC4 O LED for CH4 Key
72 VSS - GND
73 MICMT O Mic1 Mute
74 MICEM O Mic2 Mute
75 NC I
76 8RC O 8R Control
77 8TC O 8T Control
78 CM I/O Mic Key Check
79 NC I
80 NC I
81 VDD5M - +5V
82~85 NC I
86 KMI1 I Key Matrix Input1
87 KMI2 I Key Matrix Input2
88 KMI3 I Key Matrix Input3
89 KMI4 I Key Matrix Input4
90 NC I
91 NARROW O Wide / Narrow2
92 WIDE O Wide / Narrow
93 SBC O Battery Switch
94 FLASH - Flash Write Port
95~98 NC I
99 KMO1 O Key Matrix Output1
100 KMO2 O Key Matrix Output2
Microprocessor : 784214AGCXXX (TX-RX Unit IC6)

16
TK-8102 DESCRIPTION OF COMPONENTS
Display Unit (X54-3340-20)
SYMBOL PARTS NAME DISCRIPTION
D1~4 LED KEY BACKLIT
D5 LED MONITOR KEY LIGHT
D6 LED PROGRAMMABLE KEY LIGHT
D7~10 LED CHANNEL KEY LIGHT
D11 LED BUSY
D12 LED TRANSMIT
Q1 TRANSISTOR MONITOR KEY LIGHT SW
Q2,3 TRANSISTOR CHANNEL KEY LIGHT SW
Q4 TRANSISTOR BUSY LIGHT SW
Q5 TRANSISTOR PROGRAMMABLE KEY LIGHT SW
Q6,7 TRANSISTOR CHANNEL KEY LIGHT SW
Q8 TRANSISTOR TRANSMIT LIGHT SW
Q9,10 TRANSISTOR KEY BACKLIT SW
TX-RX Unit (X57-6300-XX)
Ref. No. Use/Function Operation/Condition
D1 DIODE SURGE ABSORPTION /PTT
D2 DIODE SURGE ABSORPTION /HOOK
D3 DIODE SURGE ABSORPTION /MICBL
D4 DIODE SURGE ABSORPTION /CM
D6 DIODE DC SWITCH
D7 DIODE VOTAGE DROPPED
D9 VARICAP RX VCO
D10 VARICAP TX VCO
D11 VARICAP RX VCO
D12 VARICAP TX VCO
D13 DIODE IF SWITCH (WIDE/NARROW)
D14 VARICAP MODULATION
D15 DIODE IF SWITCH (WIDE/NARROW)
D16 DIODE LIPPLE FILTER
D18 DIODE DETECTION
D19 DIODE RF SWITCH(TX/RX)
D21 VARICAP RF BPF TUNING
D22 VARICAP RF BPF TUNING
D23 DIODE TEMPERATURE COMPENSATION
D24 DIODE LIMITTER
D25 VARICAP RF BPF TUNING
D26 VARICAP RF BPF TUNING
D27 DIODE TEMPERATURE COMPENSATION
D28 VARICAP RF BPF TUNING
D30 DIODE ANT SW
D31 DIODE ANT SW
Ref. No. Use/Function Operation/Condition
D32 DIODE ANT SW
D34 DIODE APC VOLTAGE DETECT
D36 DIODE APC VOLTAGE DETECT
D38 DIODE REVERSE CONNECT PROTECTION
D39 DIODE OVER VOLTAGE DETECTION
D41 POLY SW CURRENT PROTECTION
D43 DIODE OR GATE /Mic Mute, AGC
D44 DIODE AGC
Q2 FET MIC MUTE
/Active while MICEM is H
Q3 TRANSISTOR RF AMP /PLL Fin
Q4 TRANSISTOR CHARGE PUMP
Q5 TRANSISTOR CHARGE PUMP
Q6 TRANSISTOR BUFFER AMP
/16.8MHz 3rd over tone
Q7 FET T/R SW
Q10 FET RX VCO
Q11 FET TX VCO
Q12 TRANSISTOR T/R SW
Q13 TRANSISTOR BEAT SHIFT
/Active while Beat shift is on
Q14 TRANSISTOR LIPPLE FILTER
Q15 TRANSISTOR BUFFER AMP /Output of VCO
Q16 TRANSISTOR IGNITION /Ignition Sens.
Q18 TRANSISTOR NOISE AMP
Q19 TRANSISTOR IF AMP
Q20 TRANSISTOR RF AMP /Output of VCO
Q21 FET MIXER
Q22 FET AF MUTE
/Active while Mute1 is H
Q23 TRANSISTOR RF AMP /Drive stage
Q24 TRANSISTOR BUFFER AMP /RX Audio
Q25 TRANSISTOR RF AMP /Drive stage
Q26 FET RF AMP /LNA
Q27 TRANSISTOR APC CONTROL
Q29 TRANSISTOR DC SWITCH(8R)
/Active while RX
Q30 TRANSISTOR DC SWITCH(8T)
/Active while TX
Q31 TRANSISTOR DC SWITCH(8R)
/Active while RX
Q32 TRANSISTOR AF MUTE
/Active while Mute2 is H
Q33 TRANSISTOR DC SWITCH(8T)
/Active while TX

17
TK-8102
DESCRIPTION OF COMPONENTS
Ref. No. Use/Function Operation/Condition
Q34 TRANSISTOR DC SWITCH(SB)
/Active when power on
Q35 TRANSISTOR AF MUTE
/Active while Mute3 is H
Q37 TRANSISTOR BEAT SHIFT
/Active while Beat shift is on
Q38 TRANSISTOR OVER VOLTAGE DETECTION
/Active while PS voltage is more than 18V
Q39 TRANSISTOR RF AMP /Drive stage
Q41 TRANSISTOR MIC MUTE
/Emergency Mic mute
Q42 TRANSISTOR DC SWITCH(SB)
/Active when power on
Q43 FET AF MUTE
Active while Mute1 is H
Q101 TRANSISTOR APC DRIVER
IC1 IC PLL SYNTHESIZER
IC3 IC D/A CONVERTER
IC4 IC BUFFER AMP / SUM AMP /
DC AMP / 1/2Vcc
IC5 IC IF DEMODULATION
IC6 IC CPU
IC7 IC EEPROM
IC9 IC DTMF DECODE
IC10 IC AUDIO FILTER
IC11 IC ACTIVER FILTER (QT/DQT)
IC12 IC APC CONTROL
IC14 IC VOLTAGE REGULATOR (5C)
IC15 IC VOLTAGE DETECTOR RESET
IC17 IC VOLTAGE REGULATOR (5M)
IC18 IC VOLTAGE DETECTOR INT
IC19 IC DIVIDER (7.159MHz)
IC20 IC VOLTAGE REGULATOR (8C)
IC21 IC MIC AMP / IDC
IC22 IC SPLATTER FILTER
IC101 IC POWER MODULE
IC102 IC AF POWER AMP

18
TK-8102 PARTS LIST
CAPACITORS
1 = Type ... ceramic, electrolytic, etc.
2 = Shape ... round, square, ect.
3 = Temp. coefficient
4 = Voltage rating
5 = Value
6 = Tolerance
Color*
CC45
Capacitor value
010 = 1pF
100 = 10pF
101 = 100pF
102 = 1000pF = 0.001µF
103 = 0.01µF
22
Multiplier
2nd number
1st number
0 = 22pF
CC 45 TH 1H J220
12346
5
Temperature coefficient
Tolerance (More than 10pF)
Voltage rating
Chip capacitors
1
1st Word
Color*
Code DG JKMXZP No code
LCPRSTU
Black Red Orange Yellow Green Blue Violet
0 -80 -150 -220
+ 40
- 40 + 80 - 20 + 100 -0
-330 -470 -750
C
(%)
ppm/
0.25 0.5 2 5 10 20 More than 10µF -10 +50
Less than 4.7µF-10 +75
2nd Word HG
Example : CC45TH = -470
JKL
ppm/ 30 60
0.1 0.25 0.5 1 2
120 250 500
60ppm/
Gode CD FGB
(pF)
(Less than 10pF)
1st word
2nd word A
02.0 2.5 3.15
20 25 31.5
200 250 315
2000 2500 3150
1.0 1.25 1.6
10 12.5 16
100 125 160
1000 1250 1600
1
2
3
BCDEF
4.0
40
400
4000
G
5.0
50
500
5000
H
6.3
63
630
6300
J
8.0
80
800
8000
K
-
35
-
-
V
(EX) C C 7 3 F S L 1 H 000 J
Refer to the table above.
1 = Type
2 = Shape
5 = Voltage rating
4 = Temp. coefficient
3 = Dimension
6 = Value
7 = Tolerance
7654321
(EX) C K 7 3 F F 1 H 000 Z
7654321
(Chip)(CH,RH<UJ,SL)
(Chip)(B,F)
Chip resistor (Carbon)
(EX) R K 7 3 E B 2 B 000 J
7654321
RESISTORS
(Chip)(B,F)
Carbon resistor (Nomal type)
(EX) R D 1 4 B B 2C 000 J
7654321
1 = Type
2 = Shape 5 = Rating wattage
4 = Temp. coefficient
3 = Dimension 6 = Value
7 = Tolerance
Dimension code L W T
Empty
A
B
C
D
E
F
G
H
L
W
T
0.5
5.0 0.4
3.2 0.3
2.0 0.2
1.25
0.2
1.6 0.2
1.25 0.2
0.8 0.05
0.5 0.05 0.5
0.3
2.5
0.5
5.6 0.5
4.5 0.5
4.5 0.5
4.5
0.2
3.0 0.3
2.0 0.2
1.6 0.05
1.0
0.4
3.2
Less than 2.0
Less than 2.0
Less than 2.0
Less than 1.25
Less than 1.5
Less than 1.25
Less than 1.25
Less than 1.0
Dimension (Chip capacitors)
Dimension (Chip resistor)
Rating wattage
Dimension
Dimension code L W T
E
F
G
H
0.2
1.6 0.2
1.25 0.2
0.8 0.05
0.5 0.1
0.5 0.05
0.35
0.2
3.2 0.3
2.0 0.2
1.6 0.05
1.0
1.0
1.0
Code
2C
2H
2E
Wattage
1/16W
1/2W
1/4W
Code
1J
2B
2A
Wattage
1/16W
1/8W
1/10W
Code
3A
3D
Wattage
1W
2W

19
TK-8102
Destination Parts No. Description Address New
parts
Destination
TK-8102
Ref. No. Parts No. Description
Address New
parts
∗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-8102
Ref. No.
PARTS LIST
TX-RX UNIT (X57-6300-XX)
!
DISPLAY UNIT (X54-3340-20)
1 1B A01-2178-02 CABINET
2 3B A10-4047-01 CHASSIS
3 3A A62-0942-03 PANEL ASSY
4 3A B10-2668-03 FRONT GLASS
5 2C B62-1389-00 INSTRUCTION MANUAL
63B∗B72-1946-14 MODEL NAME PLATE M
63B∗B72-1947-04 MODEL NAME PLATE M2
63B∗B72-1948-04 MODEL NAME PLATE M3
7 3B E04-0167-05 RF COAXIAL PECEPTACLE(M)
8 1C E30-3339-05 DC CORD ACCESSORY
9 2B E30-3448-05 DC CORD(RADIO)
10 2A E37-0961-05 FLAT CABLE
11 3A E37-0962-05 SPEAKER CABLE
12 2B F10-2405-12 SHIELDING COVER(UPPER)
13 2B F10-2414-03 SHIELDING PLATE(POWER MODULE)
F51-0016-05 FUSE(6*30) ACCESSORY
14 3B G02-0887-03 EARTH SPRING(TX/RX)
15 2B G10-0792-14 FIBROUS SHEET(POWER MODULE) M2,M3
16 2A ∗G11-4065-04 SHEET(KEY TOP)
17 3B G13-1468-04 CUSHION(DC CORD)
18 3A G13-1836-04 CUSHION(SPEAKER)
19 1B G53-1524-02 PACKING
20 3B G53-1525-03 PACKING(PANEL)
21 2B G53-1542-03 PACKING(PHONE JACK)
22 1C H02-0617-02 INNER PACKING CASE
23 3C H10-6636-03 POLYSTYRENE FOAMED FIXTURE
24 2D H10-6639-03 POLYSTYRENE FOAMED FIXTURE
25 1C H25-0103-04 PROTECTION BAG
26 2D H25-2320-04 PROTECTION BAG
27 3D ∗H52-1699-12 ITEM CARTON CASE
28 1D J29-0662-03 BRACKET ACCESSORY
29 2A K29-9065-01 KEY TOP
A 2B N67-3008-46 PAN HEAD SEMS SCREW
B 2B N87-2606-46 BRAZIER HEAD TAPTITE SCREW
C 2B N87-2614-46 BRAZIER HEAD TAPTITE SCREW
D 1C N99-0395-05 SCREW SET ACCESSORY
SP 3A T07-0727-05 SPEAKER
D1-4 B30-2238-05 LED(Y)
D5-10 B30-2239-05 LED(SY)
D11 B30-2237-05 LED(YG)
D12 B30-2240-05 LED(SR)
C4 CK73GB1H103K CHIP C 0.010UF K
C8-17 CK73GB1H103K CHIP C 0.010UF K
C18 CC73GCH1H101J CHIP C 100PF J
C19 CK73GB1H102K CHIP C 1000PF K
CN1 E40-6170-05 FLAT CABLE CONNECTOR
J1 E08-0877-05 MODULAR JACK
CP3,4 RK75GB1J392J CHIP-COM 3.9K J 1/16W
R1-6 RK73GB1J102J CHIP R 1.0K J 1/16W
R7-15 RK73FB2A272J CHIP R 2.7K J 1/10W
Q1-8 KRC102S DIGITAL TRANSISTOR
Q9 KRA225S DIGITAL TRANSISTOR
Q10 KRC102S DIGITAL TRANSISTOR
C12 CK73GB1H102K CHIP C 1000PF K
C14 C92-0560-05 CHIP-TAN 10UF 6.3WV
C22 CK73GB1H102K CHIP C 1000PF K
C24 CK73GB1H103K CHIP C 0.010UF K
C25 CC73GCH1H220J CHIP C 22PF J
C26 CK73GB1C104K CHIP C 0.10UF K
C27 C92-0560-05 CHIP-TAN 10UF 6.3WV
C28 CK73GB1H471K CHIP C 470PF K
C29,30 CK73GB1C104K CHIP C 0.10UF K
C31,32 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C34 CK73GB1C104K CHIP C 0.10UF K
C35 C92-0560-05 CHIP-TAN 10UF 6.3WV
C36 CK73GB1H103K CHIP C 0.010UF K
C37 CK73GB1C104K CHIP C 0.10UF K
C40 C92-0514-05 CHIP-TAN 2.2UF 10WV
C42 CK73GB1H102K CHIP C 1000PF K
C44 CK73GB1C273K CHIP C 0.027UF K
C45 CK73GB1H102K CHIP C 1000PF K
C48,49 CK73GB1H471K CHIP C 470PF K
C50 CK73GB1C223K CHIP C 0.022UF K
C51 CK73GB1C104K CHIP C 0.10UF K
C52 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C53 CK73GB1C104K CHIP C 0.10UF K
C54 C92-0560-05 CHIP-TAN 10UF 6.3WV
C55 CK73GB1H471K CHIP C 470PF K
C56 C92-0555-05 CHIP-TAN 0.047UF 35WV
C58 CK73GB1H122K CHIP C 1200PF K
C59 CK73GB1E103K CHIP C 0.010UF K
C60 C92-0543-05 CHIP-TAN 3.3UF 10WV
C61 CK73GB1H821K CHIP C 820PF K
C62 CK73GB1H332K CHIP C 3300PF K
C63 CK73GB1H472K CHIP C 4700PF K
C64 C92-0560-05 CHIP-TAN 10UF 6.3WV
C65 C92-0001-05 CHIP-C 0.1UF 35WV
C66 CC73GCH1H151J CHIP C 150PF J
C69 CK73GB1H471K CHIP C 470PF K
C71 CK73GB1C104K CHIP C 0.10UF K
C73 CC73GCH1H040B CHIP C 4.0PF B M2
C73 CC73GCH1H070B CHIP C 7.0PF B M3
C73,74 CC73GCH1H080B CHIP C 8.0PF B M
C74 CC73GCH1H050B CHIP C 5.0PF B M2
C74 CC73GCH1H080B CHIP C 8.0PF B M3
C75 CC73GCH1H030B CHIP C 3.0PF B M2
C75 CC73GCH1H060B CHIP C 6.0PF B M,M3
TX-RX UNIT (X57-6300-XX) -20:M, -21:M2, -22:M3
M:TK-2107 M2:TK-2107 M3:TK-2107