YEONHWA M TECH XR-150 User manual

XR-150/XR-450 Portable Radio
Manual
* This Service manual is subject to change according to improvement of XR-150/XR-450 Portable Radio
without notice.
* Version #2 (2009-06-09)

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Table of Contents
1. Features ------------------------------------------ 6
2. Components of XR-150/XR-450 Series Radio ---------------------- 7
3. Appearance of XR-150/XR-450 Series Radio -------------------- 8
4. Basic Operation of XR-150/XR-450 Series Radio -------------------- 9
4.1 Installation and Removing the Antenna ---------------------- 9
4.2 Installation and Removing the Battery ---------------------- 10
4.3 Installation and Removing the Belt Clip --------------------- 10
4.4 Accessory Connector ------------------------------- 11
4.5 Operating XR-150/XR-450 Radio -------------------------------- 11
5. Charging the Battery ------------------------------- 12
6. Operating Instructions of XR-150/XR-450 Series Radio ----------- 14
7. Precautions ------------------------------- 27
8. Safety Notes -------------------------------- 28
9. Specification -------------------------------- 29
9.1 XR-150 --------------------------------- 29
9.3 XR-450 --------------------------------- 30
Thank you for your purchase of the XR-150/XR-450 Series Radio.
1. Before using the Radio, please read the enclosed user guide in details.
2. The functions and specifications are subject to be changed without notice for improvement of the
Radio performance.

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RADIO FREQUENCY ENERGY SAFETY INFORMATION
Your Xradio radio generates RF electromagnetic energy during
transmit mode. This radio is designed for and classified as
“Occupational Use Only”, meaning it must be used only during the
course of employment by individuals aware of the hazards, and the
ways to minimize such hazards. This radio is NOT intended for use by
the “General Population” in an uncontrolled environment.
This radio has been tested and complies with the FCC RF exposure limits for
“Occupational Use Only”. In addition, your XRADIO radio complies with the following
Standards and Guidelines with regard to RF energy and electromagnetic energy levels and
evaluation of such levels for exposure to humans:
■FCC OET Bulletin 65 Edition 97-01 Supplement C, Evaluating Compliance with FCC
Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields.
■American National Standards Institute (C95.1-1992), IEEE Standard for Safety Levels
with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to
300 GHz.
■American National Standards Institute (C95.3-1992), IEEE Recommended Practice
for the Measurement of Potentially Hazardous Electromagnetic Fields– RF and Microwave.
■The following accessories are authorized for use with this product. Use of accessories
other than those (listed in the instruction) specified may result in RF exposure levels
exceeding the FCC requirements for wireless RF exposure.
To ensure that your expose to RF electromagnetic energy is within the
FCC allowable limits for occupational use, always adhere to the
following guidelines:
■DO NOT operate the radio without a proper antenna attached, as this may damaged
the radio and may also cause you to exceed FCC RF exposure limits. A proper antenna
is the antenna supplied with this radio by the manufacturer or antenna specifically
authorized by the manufacturer for use with this radio.
■DO NOT transmits for more than 50% of total radio use time (“50%duty cycle”).
Transmitting more than 50% of the time can cause FCC RF exposure compliance
requirements to be exceeded. The radio is transmitting when the “TX indicator” lights
red. You can cause the radio to transmit by pressing the “PTT” switch.
■ALWAYS keep the antenna at least 2.5 cm (1 inch) away from the body when

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transmitting and only use the Xradio belt-clip which is listed in instructions when attaching
the radio to your belt, etc., to ensure FCC RF exposure compliance requirements are not
exceeded. To provide the recipients of your transmission the best sound quality, hold the
antenna at least 5 cm (2 inches) from your mouth, and slightly off to one side.
The information listed above provides the user with the information needed to make him
or her aware of RF exposure, and what to do to as-sure that this radio operates with the
FCC RF exposure limits of this radio.
Electromagnetic Interference/Compatibility
During transmissions, your XRADIO radio generates RF energy that can possibly cause
interference with other devices or systems. To avoid such interference, turn off the radio in
areas where signs are posted to do so. DO NOT operate the transmitter in areas that are
sensitive to electromagnetic radiation such as hospitals, aircraft, and blasting sites.
Occupational/Controlled Use
The radio transmitter is used in situations in which persons are exposed as consequence of
their employment provided those persons are fully aware of the potential for exposure and
can exercise control over their exposure.
OPERATING NOTES
■When transmitting with a portable radio, hold the radio in a vertical position with its
microphone 5 to 10 cm (2 to 4 inches) away from your mouth. Keep the antenna at least
2.5 cm (1 inch) from your head and body.
■If you wear a portable two-way radio on your body, ensure that the antenna is at least
2.5 centimeters (1 inch) from your body when transmitting.
PRECAUTIONS
WARNING! NEVER hold the transceiver so that the antenna is very close to, or touching
exposed parts of the body, especially the face or eyes, while transmitting. The transceiver
will perform best if the microphone is 5 to 10 cm (2 to 4 inches) away from the lips and the
transceiver is vertical.
WARNING! NEVER operate the transceiver with a headset or other audio accessories at
high volume levels.
CAUTION! NEVER short the terminals of the battery pack.
NEVER connect the transceiver to a power source other than the Battery listed below Such
a connection will ruin the transceiver.
DO NOT push the PTT when not actually desiring to transmit.

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AV O I D u sing or placing the transceiver in direct sunlight or in areas with temperatures
below –30°C (–22°F) or above +60°C (+140°F). DO NOT modify the transceiver for any
reason.
MAKE SURE the flexible antenna and battery pack are securely attached to the
transceiver, and that the antenna and battery pack are dry before attachment. Exposing the
inside of the transceiver to water will result in serious damage to the transceiver.
BE CAREFUL! The series transceivers employ waterproof construction, which
corresponds to IPX7 of the international standard IEC 60529 (2001), 1 m depth for 30
minutes. However, once the transceiver has been dropped, waterproofing cannot be
guaranteed due to the fact that the transceiver may be cracked, or the waterproof seal
damaged, etc.
The use of non-XRADIO battery packs/chargers may impair transceiver performance and
invalidate the warranty.
FCC Notice Cautions.
Changes or Modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.

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1. Feature
The XR-150/XR-450 series Radio is developed to be user-friendly and compact design, to have various
features and to use at the construction / industrial / public areas for the safety & convenience of users.
The followings are the main features of the XR-150/XR-450 Series Radio.
16Groups and 512Channels are selectable.
Call guard Squelch of standardized 53 CTCSS / 208 DCS
Frequency inverter type of Scramble function
Compander function
Dual Tone Modulation Frequency (DTMF)
Normal Scan / Priority Scan
Advanced Speaker Protection technology
VOX (Voice Operated Transmit)
BCL (Busy Channel Lock)/BCLO (Busy Channel Lock Out)
Time-Out Timer (TOT)
High/Low RF Power Selectable
2 Tone /5 Tone
Monitor
Emergency/Siren
5 step Squelch control using RSSI.
Lone Worker
Remote Radio Stun / Revive(Use 5 tone)
High-Quality Audio Output(Ø40 Speaker)
PLL synthesizer type
Signal Strength Meter
Battery Status Indicator
PC Program Tuning
USB PC Programming
Various Parameters and PC downloading methods
DC+7.5V Li-ion/ 2,200 mAH high capacity Battery

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2. Components of XR-150/XR-450 Series Radio
* Components could be changed by buyer request.
Figure 3-1) standard components of XR-150/XR-450 series Radio

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3. Appearance of XR-150/XR-450 Series Radio
Figure 3-1) Appearance of XR-150/XR-450 Series Radio

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Figure 3-2) XR-150/XR-450 Series LCD Indication
4. Basic Operation of XR-150/XR-450 Series Radio
Pease read this manual carefully before using XR-150/XR-450 series Radio.
This manual contains important information about using Radio.
4.1 Installation and Removing the Antenna
To install the antenna, insert the antenna into antenna connector and screw the antenna clockwise. To remove
the antenna, screw the antenna counter clockwise.
Figure 4-1) Installation and Removing the Antenna
When installation of the antenna, giving a strong pressure to the Radio or pulling the
antenna with a strong power from the Radio can make a damage on the antenna connector,
which may cause the Radio to have a critical problem.

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4.2 Installation and Removing the Battery
4.2.1 Installation of the battery
-. To install battery, slide up the battery towards the top of the radio until battery latch is locked.
4.2.2 Removing the Battery
-. Slide the battery latch located on the bottom of radio to the open position as shown in Figure 4-2.
-. The battery is removed by pressing it against and sliding it towards the bottom of the radio
Figure 4-2) Installation and Removing the Battery
4.3 Installation and Removing the Belt Clip
- To attach belt clip to radio, align belt clip rails with the grooves in radio and slide the belt clip onto the
mounting rails until it latches into place.
- To remove belt clip from radio, push up on tab of belt clip with flat bladed screw driver and at the
same time, slide the belt clip towards the top of Radio figure 4-3).
Figure 4-3) Installation and Removing the Belt Clip

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4.4 Accessory connector
Accessory connector is used to connect external speaker Mic, and headset, etc.
Please close the cover when nothing is connected.
Figure 4-4) Accessory connector
4.5 Operating XR-150/XR-450 RADIO
4.5.1 ON/OFF/Volume Control
Turns the radio on and off and adjusts audio volume level.
4.5.2 PTT Button(Push-To-Talk Button)
You can transmit by pressing PTT button. DTMF or 5-Tone ID is transmitted according to Transceiver setting.
At this moment, you can’t transmit your voice. And then Red LED will be ON and your voice will be
transmitted.
☞Note) In case of setting BCLO and TOT function, the transmission will be restricted for other users when
you transmit continuously.
4.5.3 Menu Button(P, Program Menu Button)
Enter into Menu mode by pressing the Menu button (P) for 2 seconds.
The sequence of menu mode is as follows.
→→→→
Compander →Change Group →ID →Scramble →Squelch
→→→→
→KEY Sound →VOX →Lone Worker →Repeater
4.5.4 Monitor Button(M)
The monitor mode is enabled and disabled by pressing the Monitor button (M) on the side.
Normal Mode : During pressing the (M) button for about 2 seconds, it is possible to check the receiving
status.
Continuous Mode : During pressing the (M) button for more than 2 seconds, the Radio will make a “Beep”
tone, which means the monitor function is maintained and if you press the (M) button again, the monitor
function will be released.

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4.5.5 Emergency Button
In case of emergency situation, if you press the Emergency button, a siren sound will be heard through the
speaker in the Radio and the Radio will transmit the emergency signal to the party through the emergency
channel.
4.5.6 Channel Buttons(▼,▲)
Channel Buttons(▼,▲) have 3 functions as shown in following.
①Channel buttons(▼,▲) are to change channels.
②Channel buttons(▼,▲) are to select menu at menu mode.
③Channel buttons(▼,▲) are to change transmission power. By pressing Up button(▲) while PTT
button is being pressed, the user can select ”H”(High Power), or by pressing Down button(▼), the user
can select ”L”(Low Power).
4.5.7 Accessory Connector
The Accessory Connector is used when using an external speaker microphone or doing PC programming or
making the Cloning or using as a Repeater.
4.5.8 RX /TX LED
This LED is a lamp indicating the current status of the Radio and please refer to the below contents.
①TX : Red Lamp
②RX : Green Lamp
③CTCSS, DCS Error : Green Blinks.
④Low Battery: Red Blinks With “beep” sound.
5. Charging the Battery
5.1 Safety Notes
1) The radio of XR-150/XR-450 series receives power from high-performance Li-ion battery(XSB-2400).
XSB-2400 Battery is safe of high performance and highly reliable, and could be charged very fast. XSB-2400
Battery has been designed suitably only for the charger of Yeonhwa M Tech(DC-1000/DC-2000).
The charging of the enclosed Radio on the other maker’s charger will cause
damage on the battery and also, will cause a trouble on the Radio.
2) Please charge the battery before using the radio for best performance and safety.
3) When you charge the battery that is installed in the Radio, please turn off the radio first to charge the
battery.

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The continuous rapid discharge (for example, when making a short circuit on the
‘+’ terminal of battery by a metal substance) may make a fatal defect and the
battery can be exploded. Also, it can cause a fire.
4) Using the correct battery will improve the efficiency and safety.
5.2 The Time of Charging
Low battery voltage will make the radio less coverage and also make the performance worse. Please charge
the battery in case of following:
1) When you think performance of the radio becomes lower
2) When the red lamp on RX/TX Led blinks (every 0.5 second) during transmission or reception
3) When the battery icon blinks
4) When “beep” sound is generated while the radio is in use.
5.3 How to Charge
1) Plug the DC-1000 charger into the electricity power outlet.
2) When charging the Radio with the battery installed, please turn off the power of the Radio and
place the Radio on the charger (The charger has a slide slot.).
3) After completion of the charging, the green LED on the charger will light. However, please
continue the charging for 30 more minutes for the complete full charge.
status LED indication status LED indication
During charging Red LED lights. Detecting error Red LED is off.
After charging Green LED lights. When charging Green LED lights
5.4 Charger (DC-1000/DC-2000)
The DC-1000/DC-2000 charger is designed to charge only the Li-ion battery enclosed in this Radio.
Figure 5-2) Chargers for XR-150/XR-450 Series

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Specifications of DC-1000/DC-2000 Charger :
•INPUTVOLTAGE : DC+10.5V
• BATTERY : XSB-2400
• QUICK CHARGING TIME : In 4Hours and half
• OPERATION TEMPERATURE : 0℃~+50℃
• SIZE : 90(W)x105(D)x37(H)m/m
• Charging : 750mA(Fast charging)
6. Operating Instructions of XR-150/XR-450 Series Radio
6.1 Power On/Off
Turn Power switch clockwise. As soon as power is supplied, the backlight will be turned on.
If the user had set up the user ID, it will be displayed on the LCD and radio will enter into the latest state as a
signal sound is generated.
☞Caution) When turning (power) on the radio by pressing a button on it, the radio may enter into a
special modes in which transmission and reception is impossible. Please don’t turn on the radio by
above way.
Figure 6-1) User ID
6.2 Transmission Method
For transmission, press PTT button on the left side of the radio. As soon as the user presses keys
according to the setting, DTMF or 5-tone ID will be transmitted, and during this time, voice
communication will be interrupted for several seconds. Then, red LEDs for transmission and reception
will be turned on. It is recommended to talk 5 ~ 10cm away from the microphone for the best voice
communication.
.
☞Note: If the user makes transmission for more than a certain time while BCLO or TOT feature is on,
transmission will be forcefully disconnected for other users.
☞Caution) If present channel is TX Inhibited by pc program, TX will not be worked.
(By PC Program, it could be set)
Figure 6-2) When receiving Figure 6-3) When transmitting

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6.3 Reception Method
The user should not press PTT button during the reception. The user can adjust the volume by Volume switch,
and during reception, the green LED will be turned on. Depending on conditions of the transmitting radio,
6.4 4 Changing Channels
Channel buttons (▼,▲) are to change channels. Press Up button (▲). Then, “beep” sound will be
generated and the channel number will be increased. Or press Down button (▼) to decrease the channel.
If the user presses Up or Down button while only one channel is set, the channel will not be changed
and a different sound from “beep” will be generated. For fast increase or decease channel numbers,
press Channel buttons (▼,▲) for a while. In this case, however, “beep” sound will not be generated.
6.5 Adjusting the Transmission Power
The user can change the transmission power – High Power or Low Power. By pressing Up button (▲)
while PTT button is being pressed, the user can select “H” (High Power), or by pressing Down button
(▼), the user can select “L” (Low Power). By selecting Low power under good communication
conditions, the user can extend the battery use time.
Figure 6-4) High Power Figure 6-5) Low Power
6.6 Operation of Scan function
By pressing Menu Button (P) and Enter Button ( ) in order within 0.5 second in Standby mode, the
user can activate Scan function. After Scan function is activated, the radio will automatically search
channels and detect a channel corresponding to the frequency. To deactivate Scan function, press Menu
Button (P) once.
6.6.1 Normal Scan
At the Scan mode, the LCD displays ‘SCAN’ icon. When the scan list is CH1, CH2, CH3, the Radio
proceeds the channel scan in the sequence of CH1, CH2, CH3, CH1, CH2, …. During receiving a signal,
if you press the UP(▲) or DOWN (▼) button, you can delete the receiving channel temporarily from
the scan list and at that time, you can move to the next channel.

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6.6.2 Priority Scan
At the Priority Scan mode, the LCD displays ‘SCAN’ and ‘P-‘ icons. The Radio scans the channel in the
sequence of CH1, P, CH2, P, CH3, … at the priority scan mode. During receiving signal through the
common channel, the Radio scans the priority channel periodically and if the Radio detects the Priority
channel, it starts receiving the channel. During receiving the signal, you can move to the following scan
channel by pressing the UP or DOWN button. If you press the Enter button, you can erase the current
receiving channel temporarily from the scan list and at that time, you can move to the next channel.
But in the course of receiving the Priority channel signal, you can not change or erase
the channel by the UP/DOWN buttons(▲,▼).
6.7 Key Lock function
During pressing the “Enter” button at the receiving standby mode, press the "▲"button within 0.5second
and then, the Key Lock function will be executed and the key icon of LCD will appear. At this situation, the
other key except for the PTT and the Monitor key will not be operated. In order to release the Lock function,
press the " Enter " button and during pressing the button, press the "▼"button within 0.5second.
6.8 2TONE / 5TONE function
6.8.1 2TONE
You can use the private and group tone functions by the central control system which is using the 2TONE
SIGNALLING. If the Radio receives the tone signal, the Radio will make a Beep sound which is advising the
tone signal status and which means the Radio is ready to talk.
6.8.2 5TONE
At the tone mode, you can make the private & group calls by the 5TONE and each call memory has the call
IDs up to 30 numbers. The set-up of call memory and 5-TONE is made by PC programming. If pressing the
“Enter” button for 2seconds at the general mode, the Radio is converted to the call mode and if pressing the
"P(Program-MENU)" button for 2seconds at the call mode, the Radio is converted to the general mode. By
using the channel buttons (▲,▼) at the call mode, the call number of a channel which is available for the call
is displayed.
Figure 6-6) General Mode Figure 6-7) Call Mode

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1) 1:1 Call at call mode
Press the “Enter” button for a long period(about 2seconds) at the general mode in order to enter into
the call mode.
①Select your party to call by using the channel button (▲, ▼). If you ( ID : 12345 ) want to call your
party(ID : 54321), select him(ID : 54321) by using the channel button
(▲,▼) at the call mode.
Figure 6-8) ID Selection
②You can call the party (ID : 54321) by pressing the “Enter” button and then, the Radio of your
party(ID:54321) displays the ID number "12345". Even though your party’s Radio is in general
mode, the Radio will be converted to the call mode automatically.
Figure 6-9) ID Transmission
③After the call is completed, the Transmission and the Reception have no restriction, which
means that the TX/RX will be free.
2) 2) Group(1:N) Call at call mode
①In order to make the Group call at the call mode, the following should be set up at the PC
programming.
②If the 1st party (ID:53579) and the 2nd party(ID:52468) are in one group, the "5AAAA"which is a
call number / call name(example : baseball player) should be designated. ("A" means that all the
numbers are applied.)
3) If the caller makes a call to the group of baseball players, the caller’s Radio should press the “Menu”
and “▲” buttons at the same time after selecting the party with ID “1AAAA”. In this case, the Radios
of the party1 and the party2 display the ID "1AAAA". In case of the group call, the party’s Radio
displays the group ID number.
After the call is completed, the Transmission and the Reception have no restriction, which means that
the TX/RX will be free.

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Figure 6-10) Group Call
3) RESET
This Reset function converts the TX/RX with no restriction to the previous Close mode. Press the Monitor
button (M) at the call mode.
①The call signal will be transmitted to the party’s Radio with the ID number + “C” tone.
②If the party’s Radio is in the Close channel and after receiving the call with the “C” tone, the call is
converted to the “TX/RX with no restriction” mode.
6.9 Emergency Call function
1) This Emergency call is used for calling the party in emergency and if pressing for about 2 seconds the
button in Red color on the top side of Radio, the Emergency Call is transmitted.
In case of setting to the emergency call channel (available by PC programming) with your ID at the
general mode or if the Radio is in the call mode, you can make an Emergency Call by pressing the button
in Red color for about 2 seconds.
The transmission is sent with the “C” tone after your ID number.
①The party’s Radio receives the “C” tone along with your ID number. The Radio recognizes it as an
emergency call and displays your ID number with the consecutive alarm sound.
2) Without transmitting the emergency call to the party, the Radio itself makes the emergency call sound
continuously.
6.10 STUN function
The Radio is lost or in case you don’t want someone to use your Radio, the reception of STUN ID saved in the
Radio protects the Radio from the use by someone.
(The Stun ID can be set up by PC Program.) If the STUN ID is saved in the Radio, the Radio can’t be used
even after the power off & on of Radio. After receiving the UNSTUN ID, you can use the Radio.
Figure 6-11) STUN Screen

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6.11 Programming function
The Programming is the function for input of the data such as Frequency/Tone/Scan into the Radio.
* Programming Method
First, please prepare the Program cable for XR-150/XR-450 Series Radio.
①Press the “P” button of the Radio to turn on. Then, the –Prog- message is displayed.
②Connect the Programming cable to the Ear/Microphone Jack of Radio.
③By using the PC Program, store the data and after disconnecting the cable, turn off the power and
turn on the power again.
Figure 6-12) Program Screen
6.12 Cloning function
The CLONING is to copy the data such as Frequency/Tone/Scan into the other Radio.
* Cloning Method
①First, please prepare the Clone cable for XR-150/XR-450 Series Radio.
②The original Radio should be turned on with pressing the PTT button and the Radio
to be copied should be turned on with pressing the “ P “ button .
③The original Radio displays –CLON- message,and the Radio to be copied displays
–Prog- message.
④Connect the Clon cable to the Ear/Mic Jack of 2 Radios.
⑤If pressing the "Enter" button of the original Radio, the copy is made and after completing, please
disconnect the cable and turn off & on the power of the 2 Radios. Finally please use the Radio after
checking if the copy is made without problem.
☞Caution) If the Cloning is made into the other brand’s Radio, a malfunction can happen.
Figure 6-13) CLON Screen

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6.13 Menu description
If pressing the "P" button on the side for 2 seconds, the Radio will be in Menu mode. The Menu mode
consists of 9 Menus and you can use your desired Menu after selection.
☞Caution) After entering into the Menu, if you don’t operate the Menu for more than 8 seconds, the Menu
mode will be terminated automatically and it is converted to the Receiving mode.
6.13.1 Compander selection
This Compander selection is for On/Off of the Compander.
The selection can be made by the PC program and at the Menu.
① Enter into the Menu mode.
② By using the channel button(▲, ▼), choose the "Comp" and press the "Enter" button.
③ By using the channel button(▲,▼), choose the ON(”y") or the OFF(“n”) and press the “Enter”
button to store.
④ In order to come out of the Menu mode, press the “P” button and by selecting the On/Off, the
Compander ICON on LCD disappears/appears.
6.13.2 Group change
The Radio is designed to have total 512 channels and 16 Groups and the selection of each Group & Channel
can be available by PC program and Menu.
①Enter into the Menu mode.
②By using the channel button(▲, ▼), choose the "Group" and press the "Enter" button.
③Using the channel button(▲,▼), choose the Group and press the “Enter” button to store.
④In order to come out of the Menu mode, press the “P” button.