YEONHWA M TECH XR-450 FM TRANSCEIVER User Manual
YEONHWA M TECH CO.,LTD FM TRANSCEIVER Users Manual
Contents
- 1. Users Manual
- 2. User Manual
Users Manual
![](/img.php?id=1213708&img=bg1.png)
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)
![](/img.php?id=1213708&img=bg2.png)
2
Table of Contents
1. Features ------------------------------------------ 3
2. Components of XR-150/XR-450 Series Radio ---------------------- 4
3. Appearance of XR-150/XR-450 Series Radio -------------------- 5
4. Basic Operation of XR-150/XR-450 Series Radio -------------------- 6
4.1 Installation and Removing the Antenna ---------------------- 6
4.2 Installation and Removing the Battery ---------------------- 7
4.3 Installation and Removing the Belt Clip --------------------- 7
4.4 Accessory Connector ------------------------------- 8
4.5 Operating XR-150/XR-450 Radio -------------------------------- 8
5. Charging the Battery ------------------------------- 9
6. Operating Instructions of XR-150/XR-450 Series Radio ----------- 11
7. Precautions ------------------------------- 24
8. Safety Notes -------------------------------- 25
9. Specification -------------------------------- 26
9.1 XR-150 --------------------------------- 26
9.3 XR-450 --------------------------------- 27
Thank you for your purchase of the XR-150/XR-450 Series Radio.
1. When 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.
3
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
![](/img.php?id=1213708&img=bg4.png)
4
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
![](/img.php?id=1213708&img=bg5.png)
5
3. Appearance of XR-150/XR-450 Series Radio
Figure 3-1) Appearance of XR-150/XR-450 Series Radio
![](/img.php?id=1213708&img=bg6.png)
6
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.
![](/img.php?id=1213708&img=bg7.png)
7
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
![](/img.php?id=1213708&img=bg8.png)
8
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.
![](/img.php?id=1213708&img=bg9.png)
9
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.
① Channel buttons(▼,▲) are to change channels.
② Channel buttons(▼,▲) are to select menu at menu mode.
③ Channel 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.
① TX : Red Lamp
② RX : Green Lamp
③ CTCSS, DCS Error : Green Blinks.
④ Low 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.
![](/img.php?id=1213708&img=bga.png)
10
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
![](/img.php?id=1213708&img=bgb.png)
11
Specifications of DC-1000/DC-2000 Charger :
• INPUT VOLTAGE : 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
![](/img.php?id=1213708&img=bgc.png)
12
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.
![](/img.php?id=1213708&img=bgd.png)
13
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
![](/img.php?id=1213708&img=bge.png)
14
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.
① Select 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
② You 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
③ After 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
① In order to make the Group call at the call mode, the following should be set up at the PC
programming.
② If 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.
![](/img.php?id=1213708&img=bgf.png)
15
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.
① The call signal will be transmitted to the party’s Radio with the ID number + “C” tone.
② If 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.
① The 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
![](/img.php?id=1213708&img=bg10.png)
16
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.
① Press the “P” button of the Radio to turn on. Then, the –Prog- message is displayed.
② Connect the Programming cable to the Ear/Microphone Jack of Radio.
③ By 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
① First, please prepare the Clone cable for XR-150/XR-450 Series Radio.
② The 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 .
③ The original Radio displays –CLON- message, and the Radio to be copied displays
–Prog- message.
④ Connect the Clon cable to the Ear/Mic Jack of 2 Radios.
⑤ If 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
![](/img.php?id=1213708&img=bg11.png)
17
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.
① Enter into the Menu mode.
② By using the channel button(▲, ▼), choose the "Group" and press the "Enter" button.
③ Using the channel button(▲,▼), choose the Group and press the “Enter” button to store.
④ In order to come out of the Menu mode, press the “P” button.
![](/img.php?id=1213708&img=bg12.png)
18
6.13.3 ID output
This is for transmission of your ID and reception of your party’s ID. ID is divided by DTMF and Call ID.
Especially the Call ID transmits your ID to the party and also, the party’s ID is displayed on your Radio to
use your Radio in convenience and efficiently.
① Choose the "Id ANI" by the channel button and press the " Enter " button.
② After the “d-TON” message comes out, choose the ON(”y")/OFF(“n”) by the channel button and
press the “Enter” button.
③ After the“C-TON” message comes out, choose the ON(”y")/OFF(“n”) by the channel button and
press the “Enter” button.
④ Comes out of the Menu mode by pressing the “P” button.
6.13.4 Scramble selection
The Scramble is for protection from overhearing and the scramble reverses the voice signal from microphone
to a specific frequency and a mixed voice in order for the other person not to hear your voice.
The selection can be available by PC program and Menu.
① Enter into Menu mode.
② Select “SCrA” by pressing Channel buttons (▼,▲), and press Enter button( )..
![](/img.php?id=1213708&img=bg13.png)
19
③ Select On(y) or Off (n) by pressing Channel buttons (▼,▲), and save the selected status by pressing
Enter button( )..
④ Exit Menu mode by pressing Menu Button(P) button. Select “Off”. Then, the “ SCR “ symbol will
disappear on the LCD
6.13.5 Set Squelch
Squelch sensitivity level is selectable by 5step.
By PC Program and menu, it could be set.
1. Enter into Menu mode.
2. Select “SQUELCH” by pressing Channel buttons (▼,▲), and press Enter button( ). Then, the
message of the squelch sensitivity will be displayed.
.
3. Select squelch sensitivity -0~5- by pressing Channel buttons (▼,▲), and press Enter button( ) to
save the level
.
4. Exit Menu mode by pressing Menu Button(P).
6.13.6 Set KEY Sound
Set Key Sound menu is to decide whether to generate sound or not when the user presses four buttons .
By PC Program and menu, it could be set.
1. Enter into Menu mode.
2. Select “Sound” by pressing Channel buttons (▼,▲), and press Enter button( ). .
3. Select On(y) or Off (n) by pressing Channel buttons (▼,▲), and save the selected status by pressing
![](/img.php?id=1213708&img=bg14.png)
20
Enter button( ).
4. Exit Menu mode by pressing Menu Button(P) button. Select “Off”. Then, the “ “ symbol will
disappear on the LCD.
6.13.7 Set VOX
Set VOX is to enable users to make transmission for VOX without pressing PTT button. (This function
could be available with Ear Mic [External VOX]).
By PC Program and menu, it could be set.
1. Enter into Menu mode.
2. Select “H-FrEE” by pressing Channel buttons (▼,▲), and press Enter button( ).
3. Select On(y) or Off (n) by pressing Channel buttons (▼,▲), and press Enter button( )..
4. Select on(y). Then, the “vox , H-Fr 05“ symbol s will appear on the LCD.
Set sensitivity by pressing Channel buttons (▼,▲), and press Enter button( ).
5. Select “Off”. Then, the “ vox “ symbol will disappear on the LCD.
6. Exit Menu mode by pressing Menu Button(P) button.
6.13.8 Set Lone Worker
The Set Lone Worker is for transmission of emergency alarm sound without pressing the designated button
within a period of time when night patrol or guarding and the Lone Worker can be set to be ON/OFF.
The selection can be available by PC program and Menu.
1. Enter into Menu mode.
![](/img.php?id=1213708&img=bg15.png)
21
2. Select “LONE W” by pressing Channel buttons (▼,▲), and press Enter button( ).
3. Select On(y) or Off (n) by pressing Channel buttons (▼,▲), and save the selected status by pressing
Enter button( )..
4. Exit Menu mode by pressing Menu Button (P) button.
6.13.9 Set Repeater
If you want to use the XR-150/XR-450 Series Radio as a repeater, you can operate the Repeater by On / Off.
The Repeater function should be set up by PC program and if not, at the Menu mode the Repeater set-up is
not shown.
1. Enter into Menu mode.
2. Select “REPEAT” by pressing Channel buttons (▼,▲), and press Enter button( ).
3. Select On(y) or Off (n) by pressing Channel buttons (▼,▲), and save the selected status by pressing
Enter button( )..
4. Exit Menu mode by pressing Menu Button (P). Select “Off”. Then, the “ “ symbol will disappear on t
he LCD
![](/img.php?id=1213708&img=bg16.png)
22
7. Precautions
7.1 When using the XR-150/XR-450 Series Radios
Don’t remove the antenna from the Radio or don’t transform the antenna or don’t make
any change on the antenna. The strong electronic wave to be emitted from the Radio
can have an effect on the performance of the Radio and can cause the Radio to have a
defect.
Don’t use the accessories (such as rechargeable battery, adaptor, external speaker
microphone and earphone, etc.) from the other makers, which can cause to make a
defect on battery and a malfunction or a defect on the Radio.
Don’t disassemble or reorganize the Radio. The disassembly or reorganization will be
causes of defect or malfunction and it will be impossible to make repair afterward.
Also, a punishment can be made by law.
Don’t use the other frequency except for the permitted frequency in order not to be
punished by law.
• Don’t give an excessive shock to the Radio.
• Don’t place the Radio where the direct sunlight and/or the high temperature occurs.
• If the Radio is placed for a long time in car in summer, the hot temperature in the car
may cause an explosion of battery.
• Don’t make a damage to the battery by a sharp substance and/or an excessive shock.
7.2 Influences to the operations of Radio or other Equipments
The Radio emits a strong electronic wave, which may have an effect on the operation of other
equipments and also, can be influenced by the other devices.
Please turn off the Radio before boarding on airplane.
When you want to use the Radio in the airplane, please follow the rules in the airplane
or the instructions by crew.
![](/img.php?id=1213708&img=bg17.png)
23
In case of the area that medical equipments are being used, please use the Radio after
discussion with the equipment maker or the related doctor.
Please don’t use the Radio at the place where computer or the other electric/electronic
devices are being used, because the strong electronic wave from the Radio can have an
effect on the equipments.
8. Safety Notes
Please make sure to read the followings for safe and effective use of the Radio.
• Please keep the Radio away at least 1inch from the body.
• If the outside surface of antenna gets stripped out, it can make a burn on the skin.
• If you contact a conductive metal to battery terminal, a heat can be made and it may
cause fire, explosion and burn. Especially, please be careful when putting the battery
in a pocket or a bag.
• When using an earphone, please don’t listen to the sound at a high level. The high
sound may have a bad effect on your ear.
• After setting the volume of the Radio at a low level, please adjust the volume step by
step to the level you want. A sudden high sound may give a bad damage to the ear or
the heart.
• Please don’t remove or replace or charge or discharge the battery at a dangerous area,
since it may cause an explosion or a fire by an electrical spark.
• At the area where an electromagnetic force can be made, please make sure to turn off
the power of the Radio.
24
9. Specification
9.1 XR-150
General
Frequency Range
Frequency Stability
Programmable Channels
Channel Spacing
Dimensions
Weight
Power Source
Current Drain (maximum)
Duty Cycle(5/5/90)
VHF: 136 ~ 174 MHz
±2.5PPM (-30 to +60℃)
512 Channels/16 Group
Dual Channel Spacing 12.5/25 KHz
103mm (H)×52mm (W)×32mm (D)
250g (with Battery pack & Antenna)
DC +7.5V rechargeable Li-ion 2200㎃H battery pack
Receive mode, rated audio out - 320㎃ (Audio Max)
Transmit mode – 1,600mA(High), , 800mA(Low)
Standby mode – 60mAH
15.5 Hours(High) / 21 Hours(Low)
Receiver
Sensitivity
Squelch Sensitivity
Selectivity
Spurious and Harmonic Rejection
Inter-modulation
FM Hum and Noise
Audio Output Power
Audio Distortion
Audio Response
Speaker Impedance
IF Frequencies
Input Impedance
0.25uV 12 dB SINAD
0.22uV 10dB SINAD
65dB (12.5KHz), 70dB (25KHz)
70dB
65dB (12.5KHz), 70dB (25KHz)
40dB (12.5KHz), 45dB (25KHz)
1 Watt across an 16-ohm load
Less than 4% at rated output
+1, -3 dB from 6dB per octave de-emphasis Characteristic
from 300 ~ 3000Hz
16 ohms
21.4MHz and 455KHz
50 ohms
Transmitter
RF Power Output
Spurious and Harmonic
FM Hum and Noise
Audio Distortion
Audio Frequency Response
Output Impedance
2W/5Watt
70dB
40dB (12.5KHz), 45dB (25KHz)
3% maximum with 1KHz modulation
+1, -3dB from 6dB per octave pre-emphasis Characteristic
from 300 ~ 3000Hz
50ohms
25
9.2 XR-450
General
Frequency Range
Frequency Stability
Programmable Channels
Channel Spacing
Dimensions
Weight
Power Source
Current Drain (maximum)
Duty Cycle(5/5/90)
XR-450 : 400 ~ 512 MHz
±2.5PPM (-30 to +60℃)
512 Channels/16 Group
Dual Channel Spacing 12.5/25 KHz
103mm (H)×52mm (W)×32mm (D)
250g (with Battery pack & Antenna)
DC +7.5V rechargeable Li-ion 2200㎃H battery pack
Receive mode, rated audio out - 320㎃ (Audio Max)
Transmit mode – 1600mA(High), 1,000mA(Low)
Standby mode - 60mA
15 Hours(High) / 20 Hours(Low)
Receiver
Sensitivity
Squelch Sensitivity
Selectivity
Spurious and Harmonic Rejection
Inter-modulation
FM Hum and Noise
Audio Output Power
Audio Distortion
Audio Response
Speaker Impedance
IF Frequencies
Input Impedance
0.25uV 12 dB SINAD
0.22uV 10dB SINAD
65dB (12.5KHz), 70dB (25KHz)
70dB
65dB (12.5KHz), 70dB (25KHz)
40dB (12.5KHz), 45dB (25KHz)
1 Watt across an 16-ohm load
Less than 4% at rated output
+1, -3 dB from 6dB per octave de-emphasis Characteristic
from 300 ~ 3000Hz
16 ohms
45.3MHz and 455KHz
50 ohms
Transmitter
RF Power Output
Spurious and Harmonic
FM Hum and Noise
Audio Distortion
Audio Frequency Response
Output Impedance
4Watt/2Watt
65dB
40dB (12.5KHz), 45dB (25KHz)
3% maximum with 1KHz modulation
+1, -3dB from 6dB per octave pre-emphasis Characteristic
from 300 ~ 3000Hz
50 ohms
26
Acknowledging Special Precautions and the FCC Notice Cautions.
Modifications not expressly approved by the party responsible for compliance could void the user's authority
to operate the equipment.
FCC compliance Information
This device complies with part 15 of FCC Rules.
Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and
2. This device must accept any interference received. Including interference that may cause undesired
operation.
Information to User
This equipment has been tested and found to comply with the limits for a Class B digital device, Pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio Frequency
energy and, if not installed and used in accordance with th einstruction, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, whic h can
be determined by turning the equipment off and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
> Reorient or relocate the receiving antenna.
> Increase the separation between the equipment and receiver
> Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
27
RADIO FREQUENCY ENERGY SAFETY INFORMATION
This YEONHWA M TECH transceiver has been tested and complies with the standards listed below, in
regards to radio Frequency(RF) energy electromagnetic energy(EME) generated by the transceiver
> FCC RF exposure limits for Occupational use only. RF exposure limits adopted by the FCC are generally
based on recommendations from the national council on radiation protection and measurement, & the
American National National Standards Institute.
> FCC OET Bulletin 65 Edition 97-01 Supplement C
> American National Standards Institute(C95.1-1992)
> American National Standards Institute(C95.3-1992)
WARNING
This YEONHWA M TECH transceiver generates RF EME while transmitting.
RF EME(Radio Frequency Electric & Magnetic Energy)has the potential to cause slight thermal, or heating
effects to any part of your body less than the recommended distance from this radio transmitter's antenna.
RF energy exposure is determined primarily by the distance to and the power of the transmitting device. In
general, RF exposure is minimized when the lowest possible power is used or transmission time is kept to the
minimum required for consistent communications, and the greatest distance possible from the antenna to the
body is maintain. The transceiver has been designed for and is classified for Occupational use only.
Occupational/controlled exposure limits are applicable to situations in which persons are exposed to RF
energy as a consequence of their employment, and such persons have been made aware of the potential for
exposure and can exercise control over their exposure. This means you can use the transceiver only if you
are aware of the hazards of operating a transceiver and are familiar in ways to minimize these hazards. This
transceiver is not intended for use by the general public in uncontrolled environments. Uncontrolled
environment exposure limits are applicable to situations in which the general public may be exposed to RF
energy ,or in which the persons who are exposed as a consequence of their employment may not be fully
aware of the potential for exposure or cannot exercise control over their exposure The following list
provides you with the information required to ensure that you are aware of RF exposure and of how to
operate this transceiver so that the FCC RF exposure limitations are not exceeded.
> While transmitting(holding the PTT switch), always keep the antenna at least 2.5cm (1 inches) from your
body or face ,as well as from any bystander
> Do not transmit for more than 50% of the total transceiver use time; transmitting over 50% of the total
use time may exceed the limits in accordance to the FCC RF exposure requirements. Nominal transceiver
operation is 5% transmission time,5% reception time, and 90% stand-by time
> Use only the specified antenna for this transceiver; this may be either the antenna provided with the
transceiver or another antenna authorized by YEONHWA M TECH. Use only YEONHWA M TECH
authorized accessories (antennas, battery packs, belt clips, Speaker/Mics or headsets etc.): When worn on
the body, always place the radio in a YEONHWA M TECH recommended clip or carrying case meant for this
28
product. The use of other than recommended or approved body-worn accessories may result in RF exposure
levels which exceed the FCC's occupational /controlled environment RF exposure limits.
CAUTION
To ensure that your exposure to RF EME is within the FCC limits for occupational use, you must observe and
adhere to the above points.
Electromagnetic Interference Compatibility
Electronic devices are susceptible to electromagnetic interference(EMI)if they are not adequately shielded or
designed for electromagnetic compatibility. Because this transceiver generates RF energy, it can cause
interference to such equipment.
>Turn OFF your transceiver where signs are posted to do so. Hospitals and health care facilities use
equipment that is sensitive to electromagnetic radiation.
> Turn OFF your transceiver while on board an aircraft when so instructed, Use of the transceiver must be in
accordance with airline regulations and/or crew instructions.