Kenwood TK-3260EX User manual

SERVICE MANUAL
© 2009-12 PRINTED IN JAPAN
B51-8900-00 (K)PDF
TK-3260EX
UHF FM TRANSCEIVER
CONTENTS
Do not attempt to repair the transceiver or accessories. This may impair and there-
fore void the intrinsic safety rating. ATEX/ IECEx approved product may be repaired
only by an ATEX/ IECEx approved, Kenwood designated Authorized Service Center.
GENERAL....................................................2
SYSTEM SET-UP .........................................3
REALIGNMENT ...........................................3
EXPLODED VIEW........................................5
PACKING .....................................................6
ADJUSTMENT.............................................7
OPTION......................................................13
SPECIFICATIONS......................................13
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.

TK-3260EX
2
Document Copyrights
Copyright 2009 by Kenwood Corporation. All rights re-
served.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means, elec-
tronic, 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 prod-
ucts herein at any time for improvement purposes.
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
information for the equipment and is current as of the publi-
cation date. Changes which may occur after publication are
covered by either Service Bulletins or Manual Revisions.
These are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts.
Please refer to pages 5and 6.
PERSONAL SAFETY
The following precautions are recommended for personal
safety:
• DO NOT transmit until all RF connectors are verified se-
cure 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 techni-
cian only.
SERVICE
Do not attempt to repair the transceiver or accessories. This
may impair and therefore void the intrinsic safety rating.
ATEX/ IECEx approved product may be repaired only by an
ATEX/ IECEx approved, Kenwood designated Authorized Ser-
vice Center.

TK-3260EX
3
SYSTEM SET-UP
REALIGNMENT
1. Modes
User mode
Data programming mode
PC test mode PC tuning mode
PC mode
Mode Function
User mode For normal use.
PC mode Used for communication between the trans-
ceiver and PC.
Data programming
mode
Used to read and write frequency data and
other features to and from the transceiver.
PC test mode Used to check the transceiver using the PC.
This feature is included in the FPU.
2. How to Enter Each Mode
Mode Operation
User mode Power ON
PC mode Received commands from PC
3. PC Mode
3-1. Preface
The transceiver is programmed by using a personal com-
puter, a programming interface (KPG-36/36A, USB adapter
(KCT-53U)) and FPU (programming software).
The programming software can be used with a PC. Figure
1 shows the setup of a PC for programming.
3-2. Connection Procedure
1. Connect the transceiver to the personal computer with the
interface cable and USB adapter (when the interface cable
is KPG-36A, the KCT-53U can be used).
Note:
• You must install the KCT-53U driver in the computer to use
the USB adapter (KCT-53U).
• When using the USB adapter (KCT-53U) for the first time,
plug the KCT-53U into a USB port on the computer with
the computer power ON.
2. When the POWER is switched on, user mode can be en-
tered immediately. When the PC sends a command, the
transceiver enters PC mode.
When data is read from the transceiver, the red LED lights.
When data is written to the transceiver, the green LED
lights.
Choose the type of transceiver
Transceiver programming
Delivery
Merchandise received
A personal computer, programming interface (KPG-36/36A),
and FPU (programming software) are required for programming.
(The frequency and signalling data are programmed for the
transceiver.)
Are you using the optional antenna? YES
NO
KRA-23 or KRA-27
Optional antenna
TX/RX 440~470 1.2W TK-3260EX: E
Frequency range (MHz) RF power Type

TK-3260EX
4
Note:
• The data stored in the personal computer must match
Model Name and Model Type when it is written into EE-
PROM.
• Do not press the [PTT] key during data transmission or
reception.
3-3. KPG-36/KPG-36A Description
(PC programming interface cable: Option)
The KPG-36/36A is required to interface the transceiver
with the computer. It has a circuit in its D-sub connector
(KPG-36: 25-pin, KPG-36A: 9-pin) case that converts the
RS-232C logic level to the TTL level.
The KPG-36/36A connects the SP/MIC connector of the
transceiver to the RS-232C serial port of the computer.
3-4. KCT-53U Description (USB adapter: Option)
The KCT-53U is a cable which connects the KPG-36A to a
USB port on a computer.
When using the KCT-53U, install the supplied CD-ROM
(with driver software) in the computer. The KCT-53U driver
runs under Windows 2000 or XP or Vista(32bit).
3-5. FPU (Programming Software) Description
The FPU is the programming software for the transceiver
supplied on a CD-ROM. This software runs under Windows
2000 or XP or Vista(32bit).
The software on this disk allows a user to program the
transceiver via Programming interface cable (KPG-36/36A).
3-6. Programming with PC
If data is transferred to the transceiver from a PC with the
FPU, the data for each set can be modified.
Data can be programmed into the EEPROM in RS-232C
format via the SP/MIC Connector.
List of FPU for transceiver
Model Type FPU
TK-3260EX E KPG-123D
REALIGNMENT
Fig. 1
PC
KPG-123D
KPG-36 or KPG-36A or
KPG-36A + KCT-53U
Illustration is KPG-36.
KPG-36
Transceiver
PC
D-SUB
(25-pin)
Transceiver
PC
KPG-36A
D-SUB
(9-pin)
Transceiver
PC
KPG-36A
KCT-53U
USB

TK-3260EX
5
EXPLODED VIEW
Knob(Volume)
Knob(Selector)
3
2
1
BA
Escutcheon
Packing
Li-ion Battery
Cap
Dressed Screw
Belt Clip
Screw
(K29-9408-03)
(K29-9407-03)
(B01-1102-03)
(B09-0712-03)
(KBH-16EX)
(KNB-58LEX)
(N08-0564-04)
(G53-1769-04)
(N09-2440-15)

TK-3260EX
6
PACKING
TK- 2260EX
31
PACKING
3
2
1
DC
Instruction manual
(B62-2227-10) Pamphlet
Item carton case
Packing fixture
Belt clip
(KBH-16EX)
Li-ion Battery
(KNB-58LEX)
Cap
(B09-0712-03)
Packing (Cap)
(G53-1769-04)
Dressed screw
(N08-0564-04)
Sefety manual
(B62-2233-10)

TK-3260EX
7
Test Equipment Required for Alignment
Test Equipment Major Specifications
1. Standard Signal Generator (SSG)
Frequency Range 136 to 520MHz
Modulation Frequency modulation and external modulation
Output –127dBm/0.1µV to greater than –47dBm/1mV
2. RF Power Meter
Input Impedance 50Ω
Operation Frequency 136 to 520MHz
Measurement Range Vicinity of 10W
3. Deviation Meter Frequency Range 136 to 520MHz
4. Digital Volt Meter (DVM) Measuring Range 10mV to 10V DC
Input Impedance High input impedance for minimum circuit loading
5. Oscilloscope DC through 30MHz
6. High Sensitivity
Frequency Counter
Frequency Range 10Hz to 1000MHz
Frequency Stability 0.2ppm or less
7. DC Ammeter 5A
8. AF Volt Meter (AF VTVM) Frequency Range 50Hz to 10kHz
Voltage Range 1mV to 10V
9. Audio Generator (AG) Frequency Range 50Hz to 5kHz or more
Output 0 to 1V
10. Distortion Meter Capability 3% or less at 1kHz
Input Level 50mV to 10Vrms
11. Spectrum Analyzer Measuring Range DC to 1GHz or more
12. Tracking Generator Center frequency 50kHz to 600MHz
Output Voltage 100mV or more
13. 16ΩDummy Load Approx. 16Ω, 3W
14. Regulated Power Supply 5V to 10V, approx. 3A
Useful if ammeter equipped
nAntenna connector adapter
The antenna connector of this transceiver uses an SMA
terminal.
Use an antenna connector adapter [SMA(f) – BNC(f) or
SMA(f) – N(f)] for adjustment. (The adapter is not provided
as an option, so buy a commercially-available one.)
nBattery Jig (W05-1547-00)
Connect the power cable properly between the battery jig
installed in the transceiver and the power supply, and be sure
output voltage and the power supply polarity prior to switch-
ing the power supply ON, otherwise over voltage and reverse
connection may damage the transceiver, or the power supply
or both.
Note: When using the battery jig, you must measure the
voltage at the terminals of the battery jig. Otherwise, a slight
voltage drop may occur within the power cable, between the
power supply and the battery jig, especially while the trans-
ceiver transmits.
S
–
+
C1
100P/25V
C2
470P/25V
C3
100µ/25V
+
+Terminal
(Red)
–Terminal
(Black)
Power
supply
Power
cable
Schematic diagram
ADJUSTMENT
+ Terminal(Red)
- Terminal(Black)

TK-3260EX
8
Frequency and Signaling
The transceiver has been adjusted for the frequencies
shown in the following table. When required, re-adjust them
following the adjustment procedure to obtain the frequencies
you want in actual operation.
nFrequency (MHz)
Channel No. RX Frequency TX Frequency
1 455.050 455.100
2 440.050 440.100
3 469.950 469.900
4 455.000 455.000
5 455.200 455.200
6 455.400 455.400
7~16 - -
nSignaling
Signaling No. RX TX
1 None None
2 None 100Hz Square Wave
3 QT 67.0Hz QT 67.0Hz
4 QT 151.4Hz QT 151.4Hz
5 QT 210.7Hz QT 210.7Hz
6 QT 254.1Hz QT 254.1Hz
7 DQT D023N DQT D023N
8 DQT D754I DQT D754I
9 DTMF 159D DTMF 159D
10 None DTMF tone9
11 - -
12 None Single Tone:1000Hz
13 None MSK
14 MSK Code MSK Code
Preparations for Tuning the Transceiver
Before attempting to tune the transceiver, connect the unit
to a suitable power supply.
Whenever the transmitter is tuned, the unit must be con-
nected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
16Ωdummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
ADJUSTMENT
nList of FPU for transceiver
Model Type FPU
TK-3260EX E KPG-123D
• PC tuning
Connect the wires to the PCB in the connector case of
interface cable.
For output the wires out of the connector case, need to
process the connector case.
Connector case
KPG-36/36A
Remove the
screw
PCB layout
Shield
AF voltmeter
Audio generator
100 μ10V
100 μ10V
10μ10V
+
+
+
16Ω

TK-3260EX
9
ADJUSTMENT
Common Section
Item Condition
Measurement Adjustment
Specifications / Remarks
Test
equipment Terminal Parts Method
1. Setting 1) BATT terminal votage: 7.5V
2) SSG standard modulation
[Wide 5k]
MOD: 1kHz, DEV: 3kHz
[Wide 4k]
MOD: 1kHz, DEV: 2.4kHz
[Narrow]
MOD: 1kHz, DEV: 1.5kHz
FPU
2. Receive
Assist
1) TEST CH: Low Power meter
DVM
ANT FPU 1.95V ±0.5V
2) TEST CH: Low’ 2.35V
3) TEST CH: Center 2.65V
4) TEST CH:High’ 3.05V
5) TEST CH:High 3.35V
3. Transmit
Assist
1) TEST CH: Low
PTT: ON
2.05V ±0.5V
2) TEST CH: Low’
PTT: ON
2.45V
3) TEST CH: Center
PTT: ON
2.75V
4) TEST CH: High’
PTT: ON
3.05V
5) TEST CH:High
PTT: ON
3.35V

TK-3260EX
10
ADJUSTMENT
Transmitter Section
Item Condition
Measurement Adjustment
Specifications / Remarks
Test
equipment Terminal Parts Method
1. Frequency Adjust 1) CH: High
PTT: ON
f. counter ANT FPU 469.90050MHz ±50Hz
2. RF High
Power
1) TEST CH: Low, Low’, Center,
High’, High (5 points)
BATT terminal voltage: 7.5V
PTT: ON
Power meter
Ammeter
1.2W±0.05W
1.0A or less
3. Maximum
Fine
Deviation
[Wide 5k]
1) TEST CH:Center, Low, High
(3 points)
AG: 1kHz/150mV
Deviation meter filter
LPF: 15kHz, HPF: OFF
PTT: ON
Power meter
Deviation meter
Oscilloscope
AG
AF VTVM
ANT
SP/MIC
connector
4.2kHz (According
to the larger +, –)
4.0kHz(High only)
±100Hz
[Wide 4k] 2) TEST CH: Center
PTT: ON
3.4kHz (According
to the larger +, –)
±100Hz
[Narrow] 3) TEST CH: Center
PTT: ON
2.1kHz (According
to the larger +, –)
±100Hz
4. VOX1
Writing
1) TEST CH: Center
AG: 1kHz/60mV
Power meter
Deviation meter
Oscilloscope
AG
AF VTVM
ANT Write
5. VOX10
Writing
1) TEST CH: Center
AG: 1kHz/4mV
Write
6. DQT TCXO
Balance
Writing
[Wide 5k]
1) TEST CH: Center, Low, High
(3 points)
Write 150hex
[Wide 4k] 2) TEST CH: Center
[Narrow] 3) TEST CH: Center
7. DQT VCO
Balance
[Wide 5k]
1) TEST CH: Center, Low, High
(3 points)
Deviation meter filter
LPF: 3kHz, HPF: OFF
PTT: ON
Make the demod-
ulation wave into
square waves.
[Wide 4k] 2) TEST CH: Center
PTT: ON
[Narrow] 3) TEST CH: Center
PTT: ON