Kirisun PT3600 User manual

PT3600 Service Manual
1
Dangerous!
Do not connect AC power or DC power over 8.6V with any
connector or terminal of the radio. Otherwise it will cause fire,
electric shock or damage to the radio.
Warning!
Do not reverse power connection.
It may cause harm to the radio if signal input on the antenna
connector is higher than 20 dBm (100mW).
Do not turn on the radio before the antenna or load connection
is completed.
If the antenna has been damaged, do not use the radio.
Damaged antenna may cause light burning on skin.
Though the radio is waterproof, it's better to avoid putting it in
rain or snow, or any other liquid to ensure its life and
performance.
Statement!
Shenzhen Kirisun Electronics Co., Ltd owns the copyright of
KSP3600 software.
Duplication of KSP3600 software is allowed.
Shenzhen Kirisun Electronics Co., Ltd owns the copyright of
the MCU software code.
Shenzhen Kirisun Electronics Co., Ltd owns the copyright of
the radio outward appearance/structure/circuit design.
Shenzhen Kirisun Electronics Co., Ltd owns the copyright of
this service manual. Unauthorized publication is prohibited.
Shenzhen Kirisun Electronics Co., Ltd owns the trademarks
“KIRISUN”, “ ”, “ ”, and “科立讯”.
Contents
Chapter 1 Overview ......................................................................2
Chapter 2 External View and Functional Keys..............................2
Chapter 3 Circuit Description........................................................3
Chapter 4 Function Description and Parameter Setting.................6
Chapter 5 Disassembly for Repair.................................................9
Chapter 6 Adjustment..................................................................12
Chapter 7 Specifications..............................................................13
Chapter 8 Troubleshooting ..........................................................13
Chapter 9 KBC-31A Charger ......................................................13
Appendix 1 Abbreviations...........................................................14
Appendix 2 Electronic Parts List.................................................15
Appendix 3 Structural Parts List .................................................21
Appendix 4 Accessories ..............................................................22
Figure 1 PT3600-01 Baseband Circuit of Main Board................23
Figure 2 PT3600-01 MCU Circuit of Main Board ......................24
Figure 3 PT3600-01 TX/RX Circuit of Main Board....................25
Figure 4 PT3600-02 Baseband Circuit of Main Board................26
Figure 5 PT3600-02 MCU Circuit of Main Board ......................27
Figure 6 PT3600-02 TX/RX Circuit of Main Board....................28
Figure 7 PT3600 Top Layer Position Mark Diagram ..................29
Figure 8 PT3600 Bottom Layer Position Mark Diagram ............30

PT3600 Service Manual
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Chapter 1 Overview
1.1 Introduction
This manual applies to the service and maintenance of PT3600
series of FM portable radios, and is intended for use by engineers
and professional technicians that have been trained by Kirisun. It
contains all required service information for the equipment.
Kirisun reserves the right to modify the product structure and
specifications without notice in order to enhance product
performance and quality. You can also log on our website
www.kirisun.com to download the latest service manual or contact
your local dealer or us.
Please read this manual before repairing the product.
1.2 Service Attentions
* Safety
Do not touch the antenna connector or the PCB while
repairing the radio.
Do not reverse the battery polarity.
It may cause harm to the radio if signal input on the antenna
connector is higher than 20 dBm (100mW).
Do not turn on the radio before the antenna or load connection
is completed.
If the antenna has been damaged, do not use the radio.
Damaged antenna may cause light burning on skin.
* Electromagnetic Interference
It’s prohibited to use or repair the radio in the following
places:
Hospital, health center, airport
Any area with a potentially explosive atmosphere (e.g. orlop
deck of the ship, storage or transportation equipment for fuel and
chemical etc.)
Any place near blasting sites or area with electrical blasting
cap.
It’s recommended to avoid using or repairing the radio in the
following place:
It’s recommended to avoid using radios in a car that is moving
as the radio wave might interfere the auto engine and cause it to
stop working.
* Replacement Parts
All components used for repair should be supplied by Kirisun.
Components of the same type available on the market are not
surely able to be used in this product and we do not guarantee the
quality of the product using such components.
If you want to apply for any component from Kirisun, please
fill in an application form as below.
e.g.
Component Application Form
Radio
Model Component Position Mark
Model/
Specifications Part No. Qty
PT3600 FET Q501 RD07MVS1 105-RD07MV-001 1
PT3600 Triode Q506 2SC5108(Y) 104-SC5108-001 1
PT3600 Belt Clip KBJ-10 1
1.3 Service
All the Kirisun products are subject to the service warranty.
The main unit is guaranteed for free service of 12 months.
Accessories (such as battery pack, antenna, charger and power
adapter etc.) are guaranteed for free service of 6 months. Earphone
is a damageable part, and is not included in the warranty scope. In
one of the following cases, charge free service will be not
available.
* No valid warranty card or original invoice.
*Malfunction caused by disassembling, repairing or
reconstructing the radio by the users without permission.
* Wear and tear or any man-made damage such as mechanical
damage, burning or water leaking.
* Product’s serial number has been damaged or the product
trademark is difficult to identify.
After the warranty expires, lifetime service is still available.
We also provide service components to service stations and staffs.
Chapter 2 External View and Functional Keys
2.1 External View
2.2 Functional Keys
①PTT (Push-To-Talk) Button
Press and hold the PTT button and speak into the microphone,
your voice can be sent to the recipient. Release the PTT button to
receive.

PT3600 Service Manual
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②Programmable Button 1
Functions can be assigned to this button through PC software.
③Programmable button 2
Functions can be assigned to this button through PC software.
④Emergency Button
Press the button to activate warning tone. Press it again to exit
the emergency alert state. Under the emergency state, all the other
switches and buttons are disabled.
⑤Channel Selector Knob
Rotate the knob to select channel 1-16.
⑥On-Off/Volume Control Knob
Turn clockwise until you hear a click to turn the radio power
on. Turn counterclockwise until you hear a click to turn it off.
Rotate it to adjust the volume after turning on the radio.
⑦LED Indicator
Lights red while transmitting; lights green while receiving;
flashes red when the radio is in low power.
⑧External Speaker/Microphone Jack Cover
Open the cover; you will see the external speaker/microphone
jacks. External speaker/microphone can be connected to the radio
through these jacks.
Chapter 3 Circuit Description
3.1 Frequency Configuration
The receiver adopts single mixing mode. The first IF is
9.375kHz. The first local oscillator signal of the receiver and the
transmitter signal are generated by the frequency synthesizer.
The reference frequency of the frequency synthesizer is
produced by TCXO.
3.2 Receiver (RX)
RF
AMP
5R
RDA1846ANTSW
5T
FROMTX
AF POW ER AMP
AF
MUTE
MU TE
1 23
4 5
W558 AF
MUTE
5M AF
AMP
GND
AF
POWER
AF CN
POWER
SW
3
34
42
2
1
1
2SPK J ACK
TXD
GND
BA T T
3A
sw
CLK F RO M MC U DA T A F R O M M CU BU S Y T O MCU
MU TE DTMF /BEEP FROMMCU
5C
Figure 3.1 Receiver Diagram
Front end
The signal coming from the antenna passes through the
RX/TX switch circuit (D511, D515, D508, and D517), and is sent
to pin 15 of U8 (RDA1846) to be demodulated and to output
audio signal.
Audio signal processing
The demodulated audio signal output from U8 (RDA1846)
passes through the volume potentiometer to be adjusted, and then
goes to the audio power amplifier U1 (TDA2822).
Squelch circuit
Output from pin 26 of U8 (RDA1846) is sent to the MCU.
MCU identifies the level of the noise and controls the squelch.
Audio power amplifier
The BTL type audio power amplifier circuit consists of U1
and its peripheral components.
Base electrode of Q621 is the control terminal. High level:
Open; Low level: Close.
The Rx audio signal, voice alert signal, alert tone signal and
warning tone signal are collected and passed through the audio
power amplifier where they are amplified and output to drive the
speaker. The volume of the warning tone is not controlled by the
preset volume level of the radio. Speaker impedance: 16.
Note: Any terminal of the speaker should not be grounded!
CTCSS/DCS signal processing
CTCSS/DCS signal output from pin 32 of U8 (RDA1846) is
sent to MCU for decoding.
3.3 Transmitter (TX)
TX power amplification
ANT SW RF PA
RF PA
DRIVER
DRIVER
PRE
5T
5T
APC
SW APC CONTROL APC FROM MCU
CURRENT
SENSING
POWER SUPPLY
RDA 1846
Figure 3.2 Power Amplifier and Antenna Switch Diagram
The modulated RF signal from IC4 (RDA1846) is amplified
by Q506, Q507 and Q502, and is sent to Q501 for power
amplification. Output power of Q501: 4.5W.
Grid bias of Q502 and Q501 is controlled by the APC circuit.
Through changing the grid bias voltage, the Tx output power can
be controlled conveniently.
APC (Automatic Power Control)

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APC
SW
APC
CONTROL APC FROM MCU
CURRENT
SENSING
POWER SUPPLY
Figure 3.3 APC Circuit Diagram
R525, R523 and R524 are used to test the power amplification
current. IC502A is the sampling amplifier for the power
amplification current. IC502B is the power comparator amplifier.
If the Tx output power is too high, the power amplification
current and IC502A output will increase; IC502B output voltage
will decrease, so the offset voltage added to Q501 and Q502 will
also decrease, which causes the Tx output power to be lowered,
and vice versa. Thus the Tx output power can keep stable under
different working conditions.
MCU can set the power through changing the voltage input to
IC502B.
Tx voice signal processing
MIC signal passes through the internal/external MIC switch
circuit and is sent to pin 11 of U8 (RDA1846) for carrier
modulation.
3.4 Frequency Synthesizer
The 12.8MHz reference frequency signal provided by X603 is
divided by the internal reference frequency divider of U8
(RDA1846), and is then sent to the internal phase comparator of
U8, where the signal is compared with the signal divided by the
fractional frequency divider of internal VCO. Then the output
signal is used to control the internal VCO, enabling the frequency
to reach the set value.
3.5 Voice Alert Circuit
The radio is provided with voice alert function, which is
especially useful at night or in dark environment.
IC305 is a Flash voice memory chip, which is stored with
voices of channel indication etc. Once the channel selector knob is
switched, the speaker will announce the current channel number.
You can press the preprogrammed “Channel Annunciation” button
to repeat the current channel number.
If Channel Annunciation function is enabled, the speaker will
annunciate the current channel number once the “Channel
Annunciation” button is pressed under standby mode. You can
switch the voice type by pressing and holding the “Channel
Annunciation” button while restarting the radio. Do it repeatedly
to switch the voice type in the order of “Chinese Male-English
Male-Chinese Female-English Female-No Alert”.
3.6 Power Supply
The radio uses 7.4V, 1300mAh Li-Poly battery. The Tx power
amplification circuit (Q501 and Q502) and the Rx audio power
amplifier (U1) directly adopt the battery for power supply. Power
of other circuits is supplied by 3.3V regulated voltage.
Q636, Q639: 3V low dropout, micro-power regulators, which
supply 3V power with large current for the radio together with
Q637.
Q637: 3T switch, which is controlled by MCU.
3T: Supplies power for front end of Tx.
U8: 3C power supply, and supplies power for RD1846.
3.7 MCU Unit
MCU
R8C/2A/2C
7.3MHz RE S ET
EEPROM
3M
3M
3M
ENCODER KEYS
KEYAD MODE PTT SHIFT QTOUT PABC
DTAT CLK LE 3RC
TXD
RXD
AFC O APC MUTE
3TC
QTIN
SQL BATT
W558C
CFA
WDATA WSCLK
G/R LED RD A 1 84 6
Figure 3.4 MCU Unit Diagram
MCU unit controls the operation of each unit of the radio so
that all functions can be realized.
Communicate with external PC.
Access the status data of the radio.
Control the transmission and reception of RDA1846.
Obtain status parameters of current channel.
Control status of LED indicator.
Control power supply for each unit.
Check the actions of each functional key.
Generate CTCSS signal.
Generate DCS signal.
Generate power control signal.
Perform CTCSS decoding.
Perform DCS decoding.
Testandcontrol the squelch.
Control content of voice alert.

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Memory (E2PROM, AT24C08):
The memory is stored with channel data, CTCSS/DCS data,
other function setting data, and parameter adjusting data.
CTCSS/DCS signal encoding and decoding:
The CTCSS/DCS signal (output from pin 17, PWM wave)
generated by MCU is filtered by R359, R356, C324 and C325.
Then the resulting signal is sent to RDA1846 for modulation.
The CTCSS/DCS signal from the receiver is sent to MCU for
decoding. MCU checks if the CTCSS/DCS signal in the received
signal matches the preset value of the radio, and determines
whether to open the speaker or not.
Power adjustment:
Output signal from pin 19 of the MCU passes through low
pass filter to be changed into DC signal, and is sent to the APC
unit to control the output power of the transmitter.
CTCSS
CTCSS (Continuous Tone Control Squelch System) is a
squelch control system which is modulated on carrier and is
guided by a continuous sub-audio signal. If CTCSS is set, the
communication between the transmitting and receiving radios can
be realized only when the two radios have set the same CTCSS
frequency. In doing this, disturbance from other signals can be
avoided.
PT3600 has 39 groups of standard CTCSS frequencies for
your selection (meanwhile, any CTCSS frequency between 67 and
254.1Hz is compatible). See table 3.1.
The CTCSS signal (PWM wave) is generated by MCU, and is
passed through low pass filter consists of RC to remove high
frequency components (above 300Hz). Then the resulting signal is
sent to VCO for modulation.
Table 3.1 CTCSS Frequencies
No. Frequency
[Hz] No. Frequency [Hz] No. Frequency [Hz] No. Frequency [Hz]
1 67.0 11 94.8 21 131.8 31 186.2
2 69.3 12 97.4 22 136.5 32 192.8
3 71.9 13 100.0 23 141.3 33 203.5
4 74.4 14 103.5 24 146.2 34 210.7
5 77.0 15 107.2 25 151.4 35 218.1
6 79.7 16 110.9 26 156.7 36 225.7
7 82.5 17 114.8 27 162.2 37 233.6
8 85.4 18 118.8 28 167.9 38 241.8
9 88.5 19 123.0 29 173.8 39 250.3
10 91.5 20 127.3 30 179.9
DCS
DCS (Digital Code Squelch), which is used to control squelch,
is a series of continuous digital codes modulated on carrier
together with voice signal. If DCS is set, the speaker can be
opened only when the radio receives signal with the same DCS to
avoid disturbance of unwanted signals.
PT3600 has 83 standard codes (normal and inverse) for your
selection. See table 3.2.
DCS signal (PWM wave) is produced by MCU. It passes
through the low pass filter consists of RC to remove the high
frequency components (above 300Hz). Then the resulting signal is
sent to VCO and TCXO for modulation, with HF components of
the DCS signal being modulated by VCO, and the LF components
of the DCS signal being modulated by TCXO.
The DCS signal coming from the receiver is sent to MCU for
decoding. MCU checks if the DCS code in the received signal
matches the preset DCS of the radio, and determines whether to
open the speaker or not.
Table 3.2 DCS Codes
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
3.8 Semiconductor Data
MCU Description
Table 3.3 Microprocessor (R8C/2A/2B) Port Description
Pin No. I/O Port Name Function
1 I/O ERDATA EEPROM data line
2 O EPCLK EEPROM clock line
3 MODE
Connect the 4.7K resistor with VCC,
programming test point
4 I TOP KEY Top key
5 I UP KEY Up key
6 RESET Reset pin, programming test point
7 I XOUT Oscillator 7.3m
8 VSS/AVSS GND
9 I XIN Oscillator 7.3m
10 I VCC Power supply, programming test point

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Pin No. I/O Port Name Function
11 I DOWN KEY Down key
12 I PTT KEY PTT key, programming test point
13 O 3TC Tx power control
14 I/TRCI
OA 2T/5T IN TONE test input (reserved), programming test point, connect to RDA1846 GPIO1
15 I SQL RDA1846 SQL test input (RDA GPIO6)
16 O RDA PDN RDA1846 power supply control
17 I VOXIN RDA1846 VOX test input (RDA GPIO7)
18 I/TRDI
OB1
CTCSS/CDCSS
INPUT
CTCSS/CDCSS input (TimerD input
capture)，（RDA GPIO0）
19 O SHIFT Beat shift selection
20 O/TRD
IOD0
CTCSS/CDCSS
OUTPUT
CTCSS/CDCSS output（TimerD PWM）
（RDA GPIO0）
21 O/TRD
IOC0 CFA Frequency stability output (TimerD PWM)
22 O/TRD
IOB0 APC Automatic power control output (TimerD PWM)
23 I RDA GPIO4 Connect to RDA1846 GPIO4
24 I/INT1 RDA INT
RDA1846 interrupt signal detect （RDA
GPIO2）
25 O MAXAF Max. audio frequency
26 I RDA GPIO5 Connect to RDA1846 GPIO5
27 O AFCO Audio frequency amplifier power supply
28 O 3RC Rx power supply control
29 O UVSEL UHF and VHF switch control
30 I RDAOSC RDA crystal frequency selection
31 O RDA EN RDA1846 enabling control
32 O RDA CLK RDA1845 clock line
33 I/O RDA DATA RDA1845 data line
34 O - -
35 O - -
36 O - -
37 O/TXD
1 TXD RS-232C output (programming test point)
38 I/RXD
1 RXD RS-232C input (programming test point)
39 O - -
40 O - -
41 O - -
42 O - -
43 O - -
44 O - -
45 O - -
46 O FlashClk Flash IC clock（for FLASH IC and W588）
47 I/O FlashDio Flash IC data input/output
48 O FlashCs Flash IC selection
49 O FlashDo Flash IC data output
50 I ENC0 Encoder input
51 I ENC1 Encoder input
52 I ENC2 Encoder input
53 I ENC3 Encoder input
54 O GLED Green LED control
55 O RLED Red LED control
56 O SPKC Speaker second level control switch
57 I/AN2 LOW BATT Low battery test input
58 O/DA0 BEEP Alert tone/TONE output（and connect to
RDA GPIO1）
59 I VSS/AVSS MCU（GND）
60 - - -
61 I VREF A/D reference voltage
62 I VCC MCU power supply
63 - - -
64 - - -
Chapter 4 Function Description and
Parameter Setting
4.1 Main Functions
4.1.1 Programmable Buttons
Long Press Duration: Amount of time that the radio-user is
required to press (and hold down) a button, for the press to be
interpreted by the radio as a long press. A short press is defined as
any button-press that is shorter than the duration.
The dealer can assign one of the following auxiliary functions
to the long press or short press of the programmable button 1 and
programmable button 2:
●None: No function is assigned.
●Monitor Momentary
Press and hold the preprogrammed Monitor Momentary button
to open squelch for monitoring the transmission on the channel
whether the CTCSS/DCS, audio squelch conditions match or not.
Release it to exit monitor mode. Press this button can also cancel
the current incoming call.
●Monitor
Press the preprogrammed Monitor button to open squelch for
monitoring the transmission on the channel whether the
CTCSS/DCS, audio squelch conditions match or not or cancel the
current incoming call. Press it again to exit monitor mode.
●Squelch Off Momentary
Press and hold the preprogrammed Squelch Off Momentary
button to open squelch momentarily, and release it to resume
normal operation. Press this button can also cancel the current
incoming call.
●Squelch Off
Press the preprogrammed Squelch Off button to open squelch,
and press it again to resume normal operation. Press this button
can also cancel the current incoming call.
●Channel Annunciation
Press the preprogrammed Channel Annunciation button, the
current channel number can be heard.
●Scan
Press the preprogrammed Scan button to start scanning (the
scan list should be effective), press it again during the scanning to
stop scanning.
●High/Low Power Switch
Press the preprogrammed High/Low Power Switch button to
switch the current channel power between high and low.
●Battery Check
Press the preprogrammed Battery Check button, the current
battery power level can be heard. There are four levels in all.

PT3600 Service Manual
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Level 4 indicates that the battery power is full, and level 1
indicates that the battery power is low.
●Squelch Adjust
Press the preprogrammed Squelch Adjust button to change the
current squelch level, and the squelch level after the change can be
heard.
4.1.2 VOX
VOX function enables you to use the radio without manual
operations. This function can only be set by the dealer, and you
have to be equipped with the specified earphones.
Before using VOX, you must set VOX gain level. Such setting
enables the radio to identify the voice volume. If the microphone
is too sensitive, the background noise will trigger the radio to
transmit. If the microphone is not sensitive enough, it cannot
receive your voice when you speak. Make sure to adjust the VOX
gain level to proper sensitivity.
4.1.3 Scan Function (this function can be disabled by the dealer)
If the scan function is enabled, you can press the
preprogrammed Scan button to start scanning and press it again to
stop scanning.
Explanations:
●After scan pauses, there are two ways to resume scanning:
1. Time operate: After pausing on an active channel, the radio will
resume scanning after a preprogrammed delay. The scan delay
time can be preset from 0.5 to 5 seconds.
2. Carrier operate: After pausing on an active channel, the radio
will resume scanning after a preprogrammed delay after the
channel becomes inactive. The scan delay time can be preset from
0.5 to 5 seconds.
●The revert channel during scan can be designated through PC
software. There are following options available:
1. Last Rx channel:
When pressing the PTT button during scanning, the radio will
transmit from the last channel that received a call.
2. Designated Tx channel:
When pressing the PTT button during scanning, the radio will
transmit from the designated TX Ch.
3. Priority channel (the priority channel must be set)
When pressing the PTT button during scanning, the radio will
transmit from the priority channel in the scan list.
4. Last Tx channel:
When pressing the PTT button during scanning, the radio will
transmit from the last channel that transmits signals.
5. Selected channel:
When pressing the PTT button during scanning, the radio will
transmit from the channel selected by the channel selector knob.
●You can choose to set one of the following 3 operations when
the channel is switched during scanning:
1. No operation.
2. Scan the current channel: The scanning will pause on the
current channel, and the pause time will be the Dropout Delay
Time. However, this channel will not be added to the scan list.
3. Exit scanning.
●Power-on scanning: If this function is enabled, the radio will
start scanning after the radio power is turned on.
4.1.4 CTCSS/DCS
CTCSS (Continuous Tone Control Squelch System) and DCS
(Digital Code Squelch) are sub-audible signals, which can realize
selective call and group call function. Only radios with the same
CTCSS/DCS can realize communication. CTCSS/DCS are preset
on channels of the radio.
4.1.5 TOT (Time-Out Timer) Function
The time-out-timer can prevent the user from continuously
talking and occupying a channel overlong, which will influence
the team communication.
If you continuously transmit longer than the preset TOT time,
the radio will make an alert tone and stop transmitting. To stop the
warning tone, release the PTT button.
4.1.6 TOT Pre-alert
The TOT Pre-Alert is the number of seconds the alert tone will
sound before the Time Out Timer times out. If the continuous
transmit time exceeds the preset limit, the radio will make alert
tone, which signifies that the communication is going to be
overtime.
4.1.7 TOT Rekey Time
A period in which the radio is forbidden to transmit after its
overtime activity. During the period, if the PTT button is pressed,
an alert tone will be sounded, and the transmission is forbidden.
4.1.8 TOT Reset Time
The time delay from releasing the PTT button to the resetting
of the timer is limited. The countdown will go on if the time after
releasing the PTT key is shorter than the reset time.

PT3600 Service Manual
8
4.1.9 Automatic Battery Saving
If no signal is received and no operation is conducted for over
8 seconds, the radio will enter Battery Saving Mode. When a
signal is received or any operation occurs, the radio will exit the
Battery Saving Mode automatically. The battery save proportion
can be set to Long or Short. Long proportion has longer standby
time.
4.1.10 Low Battery Warning
When the battery voltage drops too low, the indicator will
flash. If the battery voltage drops too low while transmitting, the
indicator will flash red. When the radio make alert tone of “Di,
Di…”, the radio is prohibited to transmit.
4.1.11 Monitor
When there is no signal received, the radio's squelch circuit
will mute the speaker automatically so that the background noise
will not be heard by the user.
You can press and hold the preprogrammed Monitor button to
open squelch manually. Then the speaker will make sound
continuously (whether signals are received or not). This function
is especially useful when you need to adjust the volume level or to
receive weak signals (avoid weak signals intermitting).
When the Monitor button is pressed and held, the LED
indicator lights green, and the radio is in the monitoring state.
4.1.12 Busy Channel Lockout (BCL)
If BCL function is enabled, transmission is prohibited when
the channel is busy. If you press the PTT button on a busy channel,
an alert tone of “Di, Di, Di” will be sounded, and the transmission
will be prohibited.
4.1.13 PC Programming
You can set the functions of the radio and adjust part of its
parameters through PC programming software KSP3600.
4.1.14 Wired Clone Mode
Parameters of a radio can be transferred to other radios of the
same model by using a special clone cable.
4.1.15 Squelch Level
Squelch function is used to mute the speaker when there is no
signal or only weak signals are received. The speaker will unmute
when the squelch is opened, and will mute when the squelch is
closed. The function of selecting a squelch level is to determine
the signal strength for open and close squelch. If the signal
strength is stronger than the set level, the squelch will be opened,
and if the signal strength is weaker than the set level, the squelch
will be closed. If the squelch level is set too high, weak signals
will not be received effectively; if the squelch level is set too low,
you will be interfered by noise or other irrelevant signals. Squelch
level can be set to 0 – 9.
4.2 Functional Parameter Setting (PC Mode)
The radio has been set before leaving the factory. However,
due to different requirements of users, the radio’s operating
frequency, channels, CTCSS/DCS, scan, and other functional
parameters should be reprogrammed. Therefore, Kirisun has
specially designed a set of Chinese/English programming software
KSP3600 with friendly interface, convenient operation and
visualized display for setting functional parameters of the radio.
Steps for setting the functional parameters of the radio by PC
are as follows:
A. Install KSP3600 on the PC.
B. Connect the radio to the serial port of the PC with the special
programming cable (KSPL02). Refer to the figure below.
Figure4.1
C. Turn the computer power ON.
D. Turn the radio power ON.
E. Run the KSP3600 programming software by double clicking on
its execution program.
F. Click “Read” in the main menu of KSP3600 to read parameters
of the radio to the computer; click “Write” to write parameters in
the computer to the radio.
G. The following parameters can be set by using KSP3600
according to requirements of the user:
1) Receive and transmit frequency for each channel;
2) CTCSS/DCS encode and decode for each channel;
3) Busy Channel Lockout selection;
4) TOT
5) Squelch level selection;
6) Battery saving selection
7) Monitor mode selection
8) Scan mode selection
9) Scan revert channel selection
10) Scan priority channel selection
Please refer to the “Help” document of KSP3600 for details.
Note:
1. Turn the radio power off before connecting it to the computer.
2. When reading data from the radio, the radio’s LED indicator
Computer
(RS232 serial port) Programming cable (KSPL02) Radio (Speaker/MIC Jack)

PT3600 Service Manual
9
will flash red. Do not press the PTT button at this moment. When
writing data to the radio, the radio’s LED indicator will flash
green.
3. Please firstly read data of the radio and back up the data before
editing the parameters on KSP3600.
4. If the radio cannot function normally after being written in with
the edited data, please rewrite the backup data into the radio.
5. “Model Information” is important for the radio; users should
not modify it.
4.3 PC Test Mode
Connect the radio to the serial port of the computer with the
special programming cable. Refer to figure 4.1.
Warning: Before entering the PC Test Mode, please firstly
connect a 50HF load to the antenna connector of the radio or
connect the radio to a general test set.
With the KSP3600 programming software, you can enter the
Test Mode to adjust the following parameters of the radio:
1) Middle frequency
2) Tx power
3)Battery
4.4 Wired Clone Mode
Wired clone function can be used to improve the working
efficiency. After setting parameters of a radio, you can copy the
data of the radio (master) to another radio (slave) using a special
clone cable.
The operation procedure is as follows:
a. Turn the master radio power off. Press and hold the Monitor
button while turning the radio power ON until the red LED flashes
twice and two beep tones sound to enter the Wired Clone Mode.
b. Connect the slave radio to the master radio by the special
clone cable, see figure 4.2.
Figure 4.2
c. Press the Monitor button of the master radio to start cloning.
The LED on the master radio will light red when data of the
master is sent to the slave.
d. While the slave is receiving the data, the LED lights green.
Note: The data being cloned includes all the data in “4.2
Functional Parameter Setting” but the adjustment parameters in
“4.3 PC Test Mode”.
Chapter 5 Disassembly for Repair
The radio is a piece of precision communication equipment.
Please be careful when disassemble the radio during service. The
instructions for the disassembly are as follows.
5.1 Attaching and Removing the Battery
1) Attaching the Battery
Match the two bulges at the bottom of the battery pack with
the corresponding slots at the rear bottom of the radio. Press the
top part of the battery towards the radio to lock it in place until a
click is heard.
2) Removing the battery
To remove the battery pack, push the battery latch upwards,
and then remove the battery away from the radio.
Note:
* Do not short-circuit the battery terminals or dispose battery
in fire.
* Do not disassemble the battery casing by yourself.
5.2 Installing theAntenna
Hold the base of the antenna and turn the antenna clockwise
into the connector on the top of the radio until secure.
5.3 Installing the External Speaker/MIC
Open the cover for external speaker/MIC jacks, and then insert
the external speaker/MIC plug into the jacks on the radio.
Note: When using the external speaker/MIC, the radio will not
be waterproof.
5.4 Installing and Removing the Belt Clip
Align the grooves of the belt clip with those on the rear of the
battery. Then press the belt clip downwards until a click is heard.
Master Radio Slave Radio
Clone Cable