TTI Technologies PMR-121TX User manual

PMR-121TX
PMR 446 TRANSCEIVER
INSTRUCTION MANUAL
www.ttikorea.co.kr
PMR-121TX
PMR-121TX / PMR-121TX-2CH

Thank you for purchasing this Freequency radio.
All our products are built to offer excellent value for money
by combining advanced features, great design and
manufacturing quality.
To ensure you are familiar with the operation and features
of your radio and in order to obtain the best performance,
please read this manual carefully before operation.
1
2
3
Push-To
Talk Button
Microphone
Down Button
Speaker
Microphone/
Charger Jack
Antenna
Up Button
5
7
Mode/Keypad Lock
8
Speaker
10
LCD Display
6
Power/
Scan Button
9
4

1. Contents
2. CAUTION
3. LCD Display
4. Equipment and Accessories Supplied
5. Powering the transceiver
6. Installing the batteries
7. Charge Information
8. Control Buttons
(1) Power on-off button
(2) Push-To-Talk (PTT) button
(3) Up button
(4) Down button
9. Operating Modes and Features
(1) PMR Operation
(2) Channel Selection
(3) CTCSS Mode Selection
(4) VOX Mode Selection
(5) Roger Beep Tone
(6) Button Beep (Keytone)
(7) Call Ringer
(8) Keypad Lock
(9) Channel Scan Operation
(10) Battery Alert
(11) Backlighting
10. Note for Good Communication
11. Warning
12. Troubleshooting
13. Technical Specifications
14. Main Channel Frequency Table
15. CTCSS Tone Subcode Table
16. CE Declaration
17. Safety Requirement
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1. Contents
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NEVER ATTEMPT TO CHARGE ALKALINE OR
DRYCELL BATTERIES, AS BATTERIES MAY BURST
CAUSING PERSONAL INJURY AND DAMAGE TO
THE PRODUCT. WHEN RECHARGING NICKEL
METAL HYDRIDE (Ni-MH) BATTERIES WITH THE
SUPPLIED TTI CHARGER AND WALL ADAPTOR,
USE ONLY TTI-APPROVED RECHARGEABLE
BATTERIES. USE OF THE TTI CHARGER WITH
OTHER BRANDS OF BATTERIES IS NOT
RECOMMENDED, AS BATTERY CHARGING TIMES
WILL VARY WITH DIFFERENT BRANDS. AVOID
PLACING THE PMR-121TX RADIO TRANSCEIVER
FOR PROLONGED PERIODS OF TIME IN DIRECT
SUNLIGHT OR TEMPERATURES BELOW -20ºC OR
ABOVE 60ºC.
KEEP THE ANTENNA AT 1 INCH (2.5cm) AWAY
FROM YOUR HEAD AND BODY. DO NOT USE YOUR
PMR-121TX RADIO TRANSCEIVER WITH A
DAMAGED ANTENNA.
PLACE THE RUBBER COVERS ON JACKS WHEN
NOT IN USE.
4
2. CAUTION

1. PMR-121TX
1) Radio (1)
2) Instruction Manual (1)
2. PMR-121TX-2CH
1) Radio (2)
2) Instruction Manual (1)
3. PMR-121TX-2CH
1) Radio (2)
2) Instruction Manual (1)
3) Rechargeable Batteries (6)
4) Dual Desk-Top Charger (1)
5) Power Adaptor (1)
6) Earset(2)
4. Equipment and Accessories Supplied
5. Powering the transceiver
5
3. LCD Display
Transmit Icon
Receive Icon
Key Tone Icon
Roger Beep Icon
Keypad Lock Icon
Low Battery Level Icon
Channel Number Display
Voice Activated
Tansmission Icon(VOX)
Channel Scan Icon
CTCSS Subcode Icon
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
2 31 4 65
987 10
Your PMR-121TX Radio transceiver operates on three AAA
batteries. Alkaline batteries will provide slightly better
performance than rechargeable batteries.
When using rechargeable batteries, battery charging time is
typically 12-15 hours.

7. Charge Information (For PMR-121TX-2CH)
6
CLIP SPRING
RELEASE TAB
BELT CLIP
BATTERY COVER
COVER ARROW
POSITIVE
TERMINALS
1. Using thumb, press down on battery cover at arrow and slide cover down.
2. Then lift cover at bottom to open. Remove cover.
3. Insert three AAA batteries (positive (+) end toward the top begining
at left side and alternating positive terminals as shown).
INPUT : 230VAC
OUTPUT : 6VDC
NOTE: Only TTI approved rechargeable batteries
can be recharged in the radio transceiver.
Battery installation is made more convenient when the belt clip is
either rotated left or right to the horizontal position, or is removed.
simply rotate the clip in either direction to the horizontal position.
Be careful not to use excessive force. To remove the clip, press
down on the spring release tab and pull the clip straight out from
the radio body.
6. Installing the batteries
CHARGING STAND POWER JACK
DESKTOP CHARGING STAND
CHARGING COMPARTMENT
LEDs(2): RED---CHARGING
PMR RADIO CHARGING
COMPARTMENTS(2)

(1) Power on-off Button
Press and hold the POWER on/off button for at
least 2 seconds.You will hear a confirming melody
to indicate the unit is on. To turn the unit off, press
and hold the button for at least 2 seconds.
(3) Up Button
In the standby mode, pressing this button will increase
the listening volume. The current volume is indicated
(1-7). When in function edit mode this button will be
used to adjust the unit's settings.
(4) Down Button
In the standby mode, pressing this button will
decrease the listening volume. When in function edit
mode this button will be used to adjust the unit's
settings.
(2) Push-To-Talk (PTT) Button
Pressing and holding this button will allow you to
speak to any transceiver that is set to the same
channel and privacy code setting as yours. Hold the
transceiver approximately 2 to 3 inches from your
mouth as you speak into the built in microphone. After
you have finished speaking, release the PTT Button to
allow reception of incoming signals. Whenever the
button is pressed, the transmit icon ( ) will appear.
When receiving an incoming signal, the Recieve ( )
icon will appear. The PTT button can also be used as
a two-way call ringer. Pressing the button twice
quickly will call another party on the same channel.
7
8. Control Buttons
9. Operating Modes and Features
(1) PMR Operation
- Press and hold the POWER On/Off button for 2 seconds to
turn on power.
- Press the MODE button so the channel number flashes.
- Select the desired channel with the Up and Down Buttons.

8
The Recieve icon ( ) appears to indicate an incoming call.
- Press and hold the PTT button to transmit, then speak into
the microphone clearly and slowly. The transmit icon ( )
appears on the display while the button is pressed.
- Release PTT button to receive.
- Communication can only be accomplished when the channel
and CTCSS tone frequency of at least two parties are the
same .
- The CTCSS subcode (01-38) will be displayed on the LCD
panel if the CTCSS tone frequency function is enabled
(not oF).
(2) Channel Selection
- From standby mode, press the MODE button once;
the channel number flashes.
- Press the Up or down button briefly to move to the desired
channel number.
- Press the PTT button momentarily to confirm selection.
(3) CTCSS Mode (Sub-Code) Selection
- From standby mode,press the MODE Button twice;
a flashing oF or sub-code number is displayed.
- Press the Up or Down button to select the desired
sub-code for use (01-38).
- Press the PTT button to confirm selection.
- The CTCSS mode can be turned off by selecting oF as the
setting.
NOTE : To communicate with other PMR units, they must be
switched to the same channel and CTCSS subcode. To
communicate with other PMR units that do not have subcodes,
switch your unit to the same channel with the subcode set to oF.
The CTCSS subcodes do not prevent others from hearing you
transmisstion.This will only allow you to ignore all traffic on a
given channel not using the same subcode.
(4) VOX Mode Selection
When your voice or signal is detected using the internal
microphone/headset (purchased separately for PMR-121TX), the
radio transmits automatically without the need to press the PTT button.

9
(7) Call Ringer
The transceiver provides a transmit call ring melody to alert
other users of an incoming call. From standby mode, pressing
the PTT button twice in quick succession will transmit the call
ringer melody.
To select the call ringer tone :
- From standby mode, press the MODE Button 6 times unitil
the Call Ringer tone number flashes.
- Press the Up or Down Button to select the one tone out of 3 tones.
- Press the PTT button momentarily to confirm selection.
(6) Button Beep (keytone)
This feature allows the transceiver to sound a confirmation
tone whenever the following keys are pressed: Power On/Off/
Scan Button, Up/Down Buttons and MODE Button.
To enable and disable the keytone:
- From standby mode, press the MODE Button 5 times unitil
the flashing keytone icon ( ) appears with on or oF.
- Press the Up or Down Button to select the tone on or off as
desired.
- When enabled, the keytone icon ( ) appears.
- Press the PTT button momentarily to confirm selection.
(5) Rogrer Beep Tone
The Roger Beep is a tone which is automatically transmittied
whenever the PTT button is released.
To enable and disable the Roger Beep tone:
- From standby mode, press the MODE Button 4 times unitil
the flashing Roger Beep icon ( ) appears with on or oF.
- Press the Up or Down Button to select the tone on or off as
desired.
- When enabled, the Roger beep icon ( ) appears.
- Press the PTT button momentarily to confirm selection.
To enable the VOX operation:
- From standby mode, press the MODE button 3 times unitil the
VOX icon ( ) appears with on or oF.
- Press the Up or Down button to select the VOX on or oF as desired.
- When enabled, the VOX icon ( ) appears.
- Press the PTT button momentarily to confirm selection.

10
Note: while the SCAN mode is active, the MODE button is
inoperative. In addition, the SCAN mode will reduce the overall
battery life since the battery save function is overridden.
(10) Battery Alert
When the low battery icon ( ) blinks steadily on the LCD
panel, recharge the unit or install fresh batteries.
To enable the channel scan mode:
- From standby mode,momentarily press the Power On/Off
Button; SCAN will appear on the LCD display.
- The radio will automatically display each channel (1-8) in
ascending order to find an active main channel.
- When the unit doesn't find any signals and you want to transmit,
press the PTT Button to return to primary channel operation.The
transceiver will automatically resume scanning approximately 15
seconds after the communication is completed.
- If there is no activity and you want to leave the scan mode,
press the Power On/Off button momentarily and the unit will
return to normal operation; the SCAN icon ( ) will
disappear from the LCD display.
(9) Channel Scan Operation
This feature allows you to monitor all channels automatically for valid
signals. While scanning, you can transmit and receive. When a signal
is received, the scan is interrupted and will return to scan mode
approximately 5 seconds after the interruption.
(11) Backlighting
By pressing any buttons, the LCD backlight is turned on the LCD
backlight will be turned off automatically in about 5 seconds after
any final button is pressed.
(8) Keypad Lock
The lock function is to avoid the accidental changes of radio
settings. The POWER On/Off, PTT and Volume Up/Down
button will supercede the lock function.
To set the keypad lock operation :
- From standby mode, press and hold the MODE button for 2
seconds or until the lock icon ( ) appears on the display.
- To disable the lock operation, press and hold the MODE
button for at least 2 seconds ; the lock icon ( ) will disappear.

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11. Warning
Remove the batteries from the transceiver if it is not expected
to be used for long periods.This will eliminate the possibility
of chemicals leaking from the batteries and corroding the
transceiver.
Avoid exposing the transceiver to water or extremes of
temperature.
Do not use this device in or near a mining facility, which uses
remotely triggered explosives or in areas labeled "Blasting
Area".
Do not attempt to modify or in any way increase the output of
this transceiver. Its output is designed to meet the legal limits.
Do not use this device or charge its batteries in potentially
explosive atmospheres.
Turn your transceiver off wherever posted notices restrict the
use of radios or cellular telephones.
Facilities such as hospitals may use equipment that is
sensitive to RF energy.
Turn your transceiver off on board aircraft when requested to
do so.
Do not place your radio in front of a vehicle's air-bag. If the
air-bag deploys, it could propel the transceiver like a
projectile causing bodily injury.
1.The PMR-121TX channels are shared on a 'take turns' basis.
This means other groups may be talking on any of the
channels. A common code of courtesy is to switch to another
vacant channel and not to attempt to talk over someone who
is already using the channel you first selected.
2.The PMR-121TX has been designed to maximize
performance and improve transmission range in the field.
To avoid interference, it is recommended that you do not use
the units closer than 5 feet apart.
3.To increase battery life, use the SCAN feature sparingly.
This feature will reduce operating time considerably.
10. Notes for Good Communication

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14. Main Channel Frequency Table
15. CTCSS Tone Subcode Table
Channel
1
2
3
4
Frequency (MHz)
446.00625
446.01875
446.03125
446.04375
Channel
5
6
7
8
Frequency (MHz)
446.05625
446.06875
446.08125
446.09375
No.
1
2
3
4
5
6
7
8
9
10
Freq.
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
No.
11
12
13
14
15
16
17
18
19
20
Freq.
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
No.
31
32
33
34
35
36
37
38
OF
Freq.
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
0
No.
21
22
23
24
25
26
27
28
29
30
Freq.
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
12. Troubleshooting
13. Technical Specifications
If you have problems with your PMR-121TX, reset your unit by
turning it off and removing the batteries. And re-insert the
batteries and turn the unit on again. Check the battery power
level since in many cases low batteries cause problems such
as no transmission, weak receiving signal and low sound.
Operating frequency
Channel capacity
Channel spacing
Power source
446.00625 to 446.09375 MHz
eight channels
12.5KHz
3 X 1.5 V ' AAA' battery

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16. CE Declaration
17. Safety Requirement
For charging the rechargeable batteries, only CE-approved AC
adaptor must be used in compliance with the following
specifications:
CE version of the PMR-121TX which
displays the "CE" symbol on the product
label, complies with the essential
requirements of the European Radio and
Telecommunication Terminal Directive
1999/5/CE.
This warning symbol indicates that this
equipment operates in non-harmonised
frequency bands and / or may be subject to
licensing conditions in the country of use.
Be sure to check that you have the correct
version of this radio or the correct
programming of this radio, to comply with
national licensing requirement.
* INPUT : AC 230V 50Hz 30mA
* OUTPUT : DC 6V 200mA
This radio can be used without license and charges in; Austria,
Belgium, Bulgaria,Cyprus, Czech, Denmark, Estonia, Finland,
France,Germanay, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal,Pomania, Slovakia, Slovenia, Spain, Sweden,
Switzerland, and U.K.

We, TTI Tech Co., Ltd. (TTI house, 163-4, Poi-dong, Gangnam-gu,
Seoul, Korea), declare on our sole responsibility that this equipment
complies with the essential requirements of the Radio and
Telecommunications Terminal Equipment Directive, 1999/5/EC, and
that any applicable Essential Test Suite measurements have been
performed.
DECLARATION OF CONFORMITY
PMR-121TX
This compliance is based on
conformity with the following
harmonized standards, specifications
or documents:
Kind of equipment:
Type-designation:
Version (where applicable):
PRIVATE MOBILE RADIO
PMR-121TX
Seoul, OCT . 1 , 2007
Place and date of issue
H. J. Lee
Senior Manager
Signature
EN 300 296-1
EN 300 296-2
EN 301 489-1
EN 301 489-5
EN 60950
V1.1.1(03-2001)
V1.1.1(03-2001)
V1.4.1(08-2002)
V1.3.1(08-2002)
2000
Authorized representative
COMMAX PL
46 Koniecznego Str.
32-040 Swiatniki Gorne
Poland
T. [phone]
F. [phone]