Kenwood Radio TK 270G User Manual

INSTRUCTION MANUAL  
MODE D’EMPLOI  
MANUAL DE INSTRUCCIONES  
BEDIENUNGSANLEITUNG  
MANUAL DI ISTRUZIONI  
GEBRUIKSAANWIJZING  
1
4
7
2
5
8
0
3
6
9
A
B
C
D
TK-270G/ TK-370G  
VHF FM TRANSCEIVER/  
UHF FM TRANSCEIVER  
EMETTEUR-RECEPTEUR FM VHF/  
EMETTEUR-RECEPTEUR FM UHF  
TRANSCEPTOR DE FM VHF/  
TRANSCEPTOR DE FM UHF  
VHF-FM-TRANSCEIVER/  
UHF-FM-TRANSCEIVER  
RICETRASMETTITORE FM VHF/  
RICETRASMETTITORE FM UHF  
VHF FM ZENDONTVANGER/  
UHF FM ZENDONTVANGER  
KENWOOD CORPORATION  
© B62-1294-30 (E,NE,NT)  
09 08 07 06 05 04 03  
 
THANK YOU  
We are grateful you chose KENWOOD for your land  
mobile radio applications. We believe this easy-to-use  
transceiver will provide dependable communications to  
keep personnel operating at peak efficiency.  
KENWOOD transceivers incorporate the latest in  
advanced technology. As a result, we feel strongly that  
you will be pleased with the quality and features of this  
product.  
MODELS COVERED BY THIS MANUAL  
TK-270G: VHF FM Transceiver  
TK-370G: UHF FM Transceiver  
NOTICES TO THE USER  
GOVERNMENT LAW PROHIBITS THE OPERATION OF  
UNLICENSED RADIO TRANSMITTERS WITHIN THE  
TERRITORIES UNDER GOVERNMENT CONTROL.  
ILLEGAL OPERATION IS PUNISHABLE BY FINE OR  
IMPRISONMENT OR BOTH.  
REFER SERVICE TO QUALIFIED TECHNICIANS ONLY.  
SAFETY: It is important that the operator is aware of  
and understands hazards common to the operation of  
any transceiver.  
WARNING:  
EXPLOSIVE ATMOSPHERES (GASES, DUST, FUMES, etc.)  
Turn off your transceiver while taking on fuel, or while parked in  
gasoline service stations.  
 
i
PRECAUTIONS  
Observe the following precautions to prevent fire,  
personal injury, and transceiver damage.  
Do not modify this transceiver for any reason.  
Do not expose the transceiver to long periods of  
direct sunlight, nor place it close to heating  
appliances.  
Do not place the transceiver in excessively dusty,  
humid, and/or wet areas, nor on unstable surfaces.  
If an abnormal odor or smoke is detected coming  
from the transceiver, switch OFF the power  
immediately and remove the optional battery pack  
from the transceiver. Contact your KENWOOD  
dealer.  
 
ii  
CONTENTS  
UNPACKING AND CHECKING EQUIPMENT................... 1  
Supplied Accessories...................................... 1  
PREPARATION .................................................. 3  
Charging the Optional NiCd Battery Pack .................. 3  
Installing/ Removing the Optional NiCd Battery Pack ..... 3  
Installing the Antenna ..................................... 4  
Installing the Belt Clip ..................................... 5  
Installing the Cap over the Speaker/ Microphone  
Jacks ........................................................ 5  
Installing the Optional Speaker/ Microphone ........... 5  
GETTING ACQUAINTED ........................................ 6  
Display ...................................................... 8  
PROGRAMMABLE AUXILIARY FUNCTIONS ................. 9  
OPERATING BASICS...........................................10  
Switching Power ON/OFF ................................10  
Adjusting the Volume .....................................10  
Selecting a Group or Channel ...........................10  
Adjusting the Squelch Level .............................11  
Placing a Call..............................................12  
Receiving a Call...........................................12  
CHANNEL SCAN ...............................................13  
Priority Scan ...............................................14  
Channel Lockout ..........................................14  
Revert Channel ............................................14  
DTMF CALLS ...................................................15  
Manual Dialling ............................................15  
 
iii  
Storing DTMF Numbers ....................................16  
Confirming Stored DTMF Numbers .....................16  
Dialling Stored DTMF Numbers .........................17  
Clearing Stored DTMF Numbers ..........................17  
Redialling ..................................................17  
CODE SQUELCH ...............................................18  
Receiving ..................................................18  
Transmitting ...............................................19  
SELECTIVE CALL ..............................................20  
Receiving ..................................................21  
Transmitting ...............................................22  
2-TONE SIGNALLING ..........................................23  
Receiving ..................................................23  
Transmitting ...............................................24  
5-TONE SIGNALLING ..........................................25  
AUXILIARY FUNCTIONS ......................................26  
Selecting an Output Power...............................26  
Time-out Timer (TOT) ....................................26  
Busy Channel Lockout (BCL) .............................27  
Talk-Around ................................................27  
Battery Voltage Level .....................................28  
Lamp .......................................................28  
Beginning/ End of Transmission Signal ................28  
Monitor/Squelch ..........................................29  
 
iv  
UNPACKING AND CHECKING EQUIPMENT  
Note: The following unpacking instructions are for use by your  
KENWOOD dealer, an authorized KENWOOD service facility, or the  
factory.  
Carefully unpack the transceiver. We recommend that  
you identify the items listed in the following table before  
discarding the packing material. If any items are  
missing or have been damaged during shipment, file a  
claim with the carrier immediately.  
Supplied Accessories  
Item  
TK-270G (E,NE)  
Antenna TK-270G (NT)  
TK-370G (E,NE)  
Belt clip  
Part number Quantity  
T90-0695-X5  
T90-0680-X5  
T90-0682-X5  
J29-0624-X3  
N99-2012-X5  
1
1
1
Screw set  
Speaker/ microphone jacks  
cap  
B09-0351-X3  
1
Speaker/ microphone  
locking bracket  
J21-4493-X4  
B62-1294-XX  
1
1
Instruction manual  
Note: A market code (E, NE, or NT) can be found on the label  
attached to the package box.  
 
1
Antenna (TK-370G)  
Antenna (TK-270G)  
Belt clip  
Screw set  
Speaker/ microphone  
jacks cap  
Speaker/ microphone  
locking bracket  
 
2
PREPARATION  
Charging the Optional NiCd Battery Pack  
The optional battery pack is not charged at the  
factory; charge it before use (refer to the battery  
pack instruction manual).  
DO NOT RECHARGE THE BATTERY PACK IF IT IS  
ALREADY FULLY CHARGED. DOING SO MAY CAUSE THE  
LIFE OF THE BATTERY PACK TO SHORTEN OR THE  
BATTERY PACK MAY BE DAMAGED.  
AFTER RECHARGING THE BATTERY PACK, DISCONNECT  
IT FROM THE CHARGER. IF THE CHARGER POWER IS  
RESET (TURNED ON AFTER BEING TURNED OFF),  
RECHARGING WILL START AGAIN AND THE BATTERY  
PACK WILL BECOME OVERCHARGED.  
Initially charging the battery pack after purchase or  
extended storage (greater than 2 months) will not  
bring the battery pack to its normal operating  
capacity. After repeating the charge/discharge cycle  
two or three times, the operating capacity will  
increase to normal.  
Installing/ Removing the Optional NiCd Battery Pack  
Only use the KNB-14 and KNB-15A battery packs  
with this transceiver.  
DO NOT SHORT THE BATTERY TERMINALS OR DISPOSE  
OF THE BATTERY BY FIRE.  
NEVER ATTEMPT TO REMOVE THE CASING FROM THE  
BATTERY PACK.  
 
3
1 Match the four grooves  
of the battery pack with  
the corresponding  
guides on the back of  
the transceiver.  
2 Slide the battery pack  
along the back of the  
transceiver until the  
release latch on the  
base of the transceiver  
locks.  
3 To remove the battery  
pack, pull back on the  
release latch and slide  
the pack away from the  
transceiver.  
Installing the Antenna  
Screw the antenna into the  
connector on the top of the  
transceiver by holding the  
antenna at its base and  
turning it clockwise until  
secure.  
 
4
Installing the Belt Clip  
If necessary, attach the belt  
clip using the two supplied  
3 x 8 mm screws.  
Note: If the belt clip is not installed,  
its mounting location may get hot  
during continuous transmission or  
when left sitting in a hot  
environment.  
Installing the Cap over the Speaker/ Microphone Jacks  
If you are not using an  
optional speaker/  
microphone, install the  
cover over the SP/MIC  
jacks using the supplied  
3 x 6 mm screw.  
Installing the Optional Speaker/ Microphone  
1 Insert the speaker/  
microphone plugs into  
the SP/MIC jacks.  
2 Install the speaker/  
microphone locking  
bracket over the plugs  
using the supplied  
3 x 6 mm screw.  
 
5
GETTING ACQUAINTED  
Antenna  
Speaker  
we  
q
Microphone  
r
t
y
u
o
!
1
4
7
2
3
6
9
A
B
C
D
5
8
0
i
The transceiver is shown with the optional KNB-14 battery pack.  
q Rotary encoder  
Your dealer can program the encoder as either  
Group Up/Down or Channel Up/Down (default  
setting). Rotate to select a group or channel. Also  
rotate to adjust the squelch in Squelch Adjustment  
mode.  
w LED indicator  
Lights red while transmitting. Lights green while  
receiving. Flashes orange while receiving a Code  
Squelch or Selective Call code, or a 2-Tone, 5-Tone,  
or DTMF signal that matches the one set up in your  
transceiver. Flashes red when the battery power is  
low while transmitting.  
 
6
e Power switch/ Volume control  
Turn clockwise to switch ON the transceiver. Rotate  
to adjust the volume. To switch OFF the transceiver,  
turn counterclockwise fully.  
r PTT (Push-to-Talk) switch  
Press this switch, then speak into the microphone to  
call a station.  
t Side 1 key  
This is a PF (Programmable Function) key. Press it  
to activate its auxiliary function {page 9}.  
y Side 2 key  
This is a PF (Programmable Function) key. Press it  
to activate its auxiliary function {page 9}.  
u O, , t, s keys  
These are PF (Programmable Function) keys. Press  
each key to activate its auxiliary function {page 9}.  
i DTMF keypad  
Used for storing and transmitting DTMF numbers.  
o SP/MIC jacks  
Connect an optional speaker/ microphone here.  
! Display  
(See page 8.)  
Note: The PF keys are programmed with default functions:  
Side 1 key: Lamp  
Side 2 key: Monitor A  
O key:  
key:  
t key:  
s key:  
Scan  
Scan Del/Add  
Talk Around  
RF Power Lo  
 
7
Display  
Icon  
Description  
Not used on this transceiver.  
Appears when the selected channel is  
busy.  
Appears when QT, DQT, DTMF, 2-Tone,  
or 5-Tone decoding is deactivated (by  
pressing the Monitor key).  
Appears when you receive a Code  
Squelch, Selective Call, 2-Tone,  
5-Tone, or DTMF Signalling call. Also  
appears when you transmit using Code  
Squelch or Selective Call.  
Appears while scanning.  
Appears while using low power on the  
selected channel.  
Appears when the selected channel is  
included in the scanning sequence.  
Displays the selected channel, the  
squelch level, DTMF digits (when  
entering digits, confirming digits, or  
making a call), and messages received  
via Selective Call.  
 
8
PROGRAMMABLE AUXILIARY FUNCTIONS  
Side 1, Side 2, O, , t, and s can be programmed  
with the auxiliary functions listed below.  
DTMF/ 2-Tone  
Function  
5-Tone Model  
Model  
No  
Call 1  
Call 2  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
No  
Channel Down  
Channel Up  
Display Character  
Group Down  
Group Up  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Home Channel  
Key Lock  
Lamp  
Monitor  
Monitor Momentary  
None  
Redial  
RF Power Lo  
Scan  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Scan Del/Add  
Sel Call Entry  
Squelch Momentary  
Squelch Off  
Talk-Around  
2-Tone Encode  
Yes  
Yes  
Yes  
Yes  
 
9
OPERATING BASICS  
Switching Power ON/OFF  
Turn the Power switch/ Volume control clockwise to  
switch the transceiver ON.  
Turn the Power switch/ Volume control counter-  
clockwise to switch the transceiver OFF.  
If the Radio Password function is programmed,  
“PASSWORD” will appear on the display when the  
power is turned ON. To unlock the transceiver, enter  
the password, then press the O key. If you enter the  
wrong password, an error tone sounds and the  
transceiver remains locked. The password can  
contain a maximum of 6 digits.  
Adjusting the Volume  
Rotate the Power switch/ Volume control to adjust  
the volume. Clockwise increases the volume and  
counterclockwise decreases it.  
You may need to adjust the volume more precisely  
while communicating with other parties.  
Note: If your dealer programmed Squelch Momentary or Squelch Off  
onto a PF key, you can press that key to hear background noise while  
adjusting the volume level (refer to “Monitor/Squelch” on page 29).  
Selecting a Group or Channel  
Rotate the Rotary encoder (or press the keys  
programmed as Group Up/Down or Channel Up/  
Down) to choose your desired group or channel.  
Clockwise increases the number and counter-  
clockwise decreases it.  
If a group or channel has not been programmed, it  
cannot be used.  
 
10  
Adjusting the Squelch Level  
Squelch is used to silence the speaker when no  
signals are present. When squelch is turned OFF,  
you will hear background noise from the speaker.  
When it is ON, you will not hear background noise.  
The squelch level you select determines when  
squelch will turn OFF and ON. If you select a  
squelch level that is too high, you will not hear  
weaker signals. If you select a squelch level that is  
too low, you will hear background noise between  
signals.  
To adjust the squelch:  
1 Press and hold the Side 2 key, then press the s  
key.  
“SQL” and the current squelch level appear.  
2 Rotate the Rotary encoder to select a squelch  
level from 0 ~ 9.  
Clockwise increases the squelch level and  
counterclockwise decreases it.  
3 Press any key other than the key programmed as  
Lamp to complete the setting.  
Normal operation is restored.  
 
11  
Placing a Call  
1 Make sure no parties are currently transmitting on  
your selected channel.  
2 Press the PTT switch and speak into the  
microphone in your normal speaking voice.  
For best sound quality at the receiving station, hold  
the microphone approximately 1.5 inches  
(3 ~ 4 cm) from your mouth.  
3 Release the PTT switch to receive.  
Receiving a Call  
Your dealer may have programmed QT or DQT  
signalling on your transceiver. If your selected  
channel is programmed with one of these features,  
you will hear calls only when another party in your  
system makes a call. All other calls will not be  
heard.  
If your selected channel is not set up with QT or  
DQT, you will hear calls made by any party (not just  
those in your system).  
 
12  
CHANNEL SCAN  
Scan is useful for monitoring signals on the channels  
programmed on the transceiver. When scanning, the  
transceiver checks for a signal on each channel, and  
only stops on a channel if a signal is present.  
The transceiver will remain on a busy channel until the  
signal is no longer present. Your dealer programs the  
delay time between signal drop-out and scan  
resumption. If a signal is received during the delay  
time, the transceiver will remain on the same channel.  
Note:  
You can only use Scan if your dealer has programmed at least 2  
channels on the transceiver. Also, there must be at least 2 channels  
not locked out of Scan.  
Ask your dealer for an explanation on how Channel Scan functions  
when using Code Squelch, Selective Call, or 2-Tone signalling.  
To start scanning, press the key programmed as Scan.  
Scanning starts from the current channel and ascends  
through the channel numbers.  
The SCN icon and “SCAN” appear on the display.  
To end Scan, press the Scan key again.  
 
13  
Priority Scan  
If your dealer set up a priority channel on your  
transceiver, the transceiver will continuously monitor  
that channel while receiving a signal on another  
channel. When a signal is received on the Priority  
channel, the transceiver immediately switches to that  
channel.  
“P” appears on the display.  
The transceiver will remain on the Priority channel  
until the signal drops out. Your dealer programs the  
delay time between signal drop-out and scan  
resumption.  
Channel Lockout  
If programmed by your dealer, you can select  
channels to lock out of the scanning sequence.  
Perform the following steps while not in Scan mode.  
1 Rotate the Rotary encoder to select the channel  
you want to lock out of Scan.  
2 Press the key programmed as Scan Del/Add.  
Each press of Scan Del/Add toggles the lockout  
status of the selected channel ON and OFF.  
Channels that are included in Scan are represented  
by an “A” on the display. Channels locked out of  
Scan do not have an “A” on the display.  
Revert Channel  
During Scan, pressing the PTT switch to transmit will  
cause the transceiver to select the revert channel.  
Your dealer programs the Revert channel for your  
transceiver. Consult your dealer for details.  
 
14  
DTMF CALLS  
Manual Dialling  
There are two ways to manually call a number:  
1) Press and hold the PTT switch, then enter the  
desired digits on the keypad.  
You can enter the digits 0 ~ 9, A ~ D, , and #.  
(A ~ D may be disabled by your dealer.)  
If programmed by your dealer, you do not need to  
continuously hold the PTT switch. The transceiver  
will remain in the transmit state for 2 seconds after  
releasing each key.  
While transmitting DTMF tones, the microphone is  
muted. You can monitor tones as they are  
transmitted by listening to the speaker audio.  
2) First enter the desired digits on the keypad (16  
digits maximum).  
Each digit appears on the display as it is entered  
and its corresponding DTMF tone sounds.  
You can enter the digits 0 ~ 9, A ~ D, , and #.  
(A ~ D may be disabled by your dealer, however  
you can still enter them if desired.)  
If you entered a wrong digit or decide not to dial the  
number, press the O, , t, or s key to exit.  
After entering the desired digits, press the PTT  
switch to make the call.  
The digits scroll across the display and their  
corresponding DTMF tone sounds.  
If programmed by your dealer, no DTMF tone will  
sound when “D” is transmitted. “D” is used for a  
pause time. The pause duration is programmed by  
your dealer.  
 
15  
Storing DTMF Numbers  
Note: Auto Dialling must first be activated by your dealer.  
You can store DTMF numbers (16 digits maximum)  
in each of the 9 Auto Dial memory locations (1 ~ 9).  
1 Press the # key.  
“D” appears on the display.  
2 Enter the desired digits on the keypad.  
You can enter the digits 0 ~ 9, A ~ D, , and #.  
(A ~ D may be disabled by your dealer, however  
you can still enter them if desired.) When entering  
#”, you must first press the PTT switch.  
To cancel, press O, , t, or s.  
3 Press the # key, then enter a single digit number  
(1 ~ 9) for the memory location.  
The original display is restored.  
Confirming Stored DTMF Numbers  
To confirm the numbers stored in memory locations:  
1 Press the key.  
“A” appears on the display.  
2 Enter the desired memory location number (1 ~ 9).  
The stored digits are displayed.  
If programmed by your dealer, no DTMF tone will  
sound when “D” is transmitted. “D” is used for a  
pause time. The pause duration is programmed by  
your dealer.  
3 Press any key other than the PTT switch to exit.  
 
16  
Dialling Stored DTMF Numbers  
To call a number stored in a memory location:  
1 Press the key.  
“A” appears on the display.  
2 Enter the desired memory location number (1 ~ 9).  
The stored digits are displayed.  
3 Press the PTT switch.  
If programmed by your dealer, no DTMF tone will  
sound when “D” is transmitted. “D” is used for a  
pause time. The pause duration is programmed by  
your dealer.  
Clearing Stored DTMF Numbers  
To clear the numbers from a memory location:  
1 Press the # key twice.  
“D- CLR” appears on the display.  
To cancel the process, press any key other than  
1 ~ 9.  
2 Enter the desired memory location number (1 ~ 9).  
Redialling  
You can redial the last number you transmitted (16  
digits maximum).  
1 Press the key, then press the 0 key.  
“A” and the digits are displayed.  
2 Press the PTT switch.  
Note: Switching OFF the transceiver power clears the redial  
memory.  
 
17  
CODE SQUELCH  
Code Squelch is enabled or disabled by your dealer.  
This function turns the transceiver squelch OFF only  
when it receives the DTMF code that has been set up in  
your transceiver. Transceivers that do not transmit the  
correct code will not be heard. Consequently, you can  
communicate with a specific party without listening to  
other parties using the same channel.  
Your dealer may also activate Group Call for your  
transceiver. This is useful when you want to send  
information to a number of units in a fleet. Ask your  
dealer for details.  
Note: Code Squelch cannot be used on channels programmed with  
Selective Call or 2-Tone Signalling.  
Receiving  
When you receive a signal containing the correct  
code, squelch turns OFF and you will hear the call.  
“CALL” appears on the display and the LED indicator  
flashes orange.  
To mute the speaker after squelch turns OFF, press the  
key programmed as Monitor or Squelch.  
Your dealer can program squelch to automatically turn  
back ON after a specific time period elapses.  
If Transpond for Code Squelch is programmed, an  
acknowledgment signal is returned to the calling  
station. Transpond does not function when you are  
called with a Group code. Transpond for Code  
Squelch can send an alert tone, a transceiver ID code,  
or a code stored in memory location 1.  
If Tone Alert for Code Squelch is programmed, an alert  
tone will sound when the correct code is received.  
 
18  
Transmitting  
1 Press and hold the PTT switch.  
2 Enter the code of the transceiver you want to call  
or enter a Group code on the keypad.  
If desired, you can send codes the same way you  
make DTMF calls {page 15}. Both manual methods  
can be used or you can store codes in memory,  
then dial them from a memory location.  
“CALL” appears on the display and the LED  
indicator lights red.  
3 Use the transceiver the same as in a regular call;  
press the PTT switch to transmit and release it to  
receive.  
The called transceiver’s squelch will turn OFF while  
you are transmitting. After you stop transmitting,  
the squelch will turn back ON after a pre-set time  
period elapses. This time period is programmed by  
your dealer.  
When you release the PTT switch, squelch turns  
OFF and the LED indicator flashes orange. When  
you receive a signal, the LED indicator lights green.  
When the signal drops out, the LED indicator  
flashes orange again. If no signal is received for a  
pre-determined time, squelch turns back ON.  
Pressing the key programmed as Monitor or  
Squelch at any time will turn the squelch back ON.  
 
19  
SELECTIVE CALL  
Selective Call is enabled or disabled by your dealer.  
This function is similar to Code Squelch {page 18}. The  
differences from Code Squelch are:  
You can send or receive message codes containing a  
maximum of 5 digits.  
Selective Call turns the squelch OFF only when the  
transceiver receives a predetermined DTMF code in the  
correct sequence:  
1) A 3-digit ID code  
2) A 1-digit Intermediate code  
3) A message code (up to 5 digits)  
Your dealer may also activate Group Call for your  
transceiver. This is useful when you want to pass  
information to a number of units in a fleet. Ask your  
dealer for details.  
Note: Selective Call cannot be used on channels programmed with  
Code Squelch or 2-Tone Signalling.  
 
20  
Receiving  
When you receive the correct ID and Intermediate  
codes, squelch turns OFF and you will hear the call.  
If a message code is also received, the message  
appears on the display  
“CALL” appears on the display and the LED indicator  
flashes orange.  
When you receive a call with your ID code, “C”  
appears on the display (i.e.- C 12345).  
When you receive a call with your Group code, “A”  
appears on the display (i.e.- A 12345).  
When no message is received, “NO DATA” appears on  
the display.  
You can clear a message by pressing any key other  
than the key programmed as Lamp.  
To mute the speaker after squelch turns OFF, press  
the key programmed as Monitor or Squelch.  
Your dealer can program squelch to automatically turn  
back ON after a specific time period elapses.  
If Transpond for Selective Call is programmed, an  
acknowledgment signal is returned to the calling  
station. Transpond does not function when you are  
called with a Group code. Transpond for Selective  
Call can send an alert tone, a transceiver ID code, or a  
code stored in memory location 1.  
If Tone Alert for Selective Call is programmed, an alert  
tone will sound when the correct code is received.  
 
21  
Transmitting  
1 Press and hold the PTT switch.  
2 Enter the code of the transceiver you want to call  
or enter a Group code on the keypad.  
Be sure to enter the ID or Group code, followed by  
the Intermediate code of the transceiver you want  
to call. If desired, you can also enter a message  
code of up to 5 digits.  
If desired, you can send codes the same way you  
make DTMF calls {page 15}. Both manual  
methods can be used or you can store codes in  
memory, then dial them from a memory location.  
“CALL” appears on the display and the LED  
indicator lights red.  
3 Use the transceiver the same as in a regular call;  
press the PTT switch to transmit and release it to  
receive.  
When you release the PTT switch, squelch turns  
OFF and the LED indicator flashes orange. When  
you receive a signal, the LED indicator lights green.  
When the signal drops out, the LED indicator  
flashes orange again. If no signal is received for a  
pre-determined time, squelch turns back ON.  
Pressing the key programmed as Monitor or  
Squelch at any time will turn the squelch back ON.  
 
22  
2-TONE SIGNALLING  
2-Tone Signalling is enabled or disabled by your dealer.  
This function turns the transceiver optional signalling  
OFF only when it receives the 2-tone signal that has  
been set up in your transceiver. Transceivers that do  
not transmit the correct tones will not be heard.  
Your dealer may also activate Group Call for your  
transceiver. Ask your dealer for details.  
Receiving  
When you receive a signal containing the correct  
tones, optional signalling turns OFF and you will hear  
the call.  
“CALL” appears on the display and the LED indicator  
flashes orange.  
If your dealer has programmed the transceiver to turn  
the squelch OFF, you can mute the speaker by  
pressing the key programmed as Monitor or Squelch.  
Your dealer can program optional signalling and  
squelch to automatically turn back ON after a specific  
time period elapses.  
If Transpond for 2-Tone Signalling is programmed, an  
acknowledgment signal is returned to the calling  
station. Transpond for 2-Tone Signalling can transmit  
an alert tone only.  
If Tone Alert for 2-Tone Signalling is programmed, an  
alert tone will sound when the correct tones are  
received.  
 
23  
Transmitting  
1 Press the key programmed as 2-Tone Encode.  
A 2-Tone code appears on the display.  
2 Rotate the Rotary encoder to select your desired  
2-Tone code.  
3 Press the PTT switch and 2-Tone Encode key to  
begin transmitting. Release the 2-Tone Encode  
key when transmission has started. Release the  
PTT switch to receive.  
When you release the PTT switch, optional  
signalling turns OFF and the LED indicator flashes  
orange. When you receive a signal, the LED  
indicator alternates between green and orange.  
When the signal drops out, the LED indicator  
flashes orange again. If no signal is received for a  
pre-determined time, optional signalling turns back  
ON.  
Pressing the key programmed as Monitor or  
Squelch at any time will turn the optional signalling  
back ON.  
 
24  
5-TONE SIGNALLING  
5-Tone Signalling is either activated or deactivated by  
your dealer.  
5-Tone Signalling only opens the squelch when the  
transceiver receives five tones corresponding to those  
set up in your transceiver. When the squelch opens,  
you will be able to hear the caller without any further  
action.  
After a correct 5-Tone signal is received and the squelch  
opens, pressing the key programmed as Monitor will  
cancel the connection.  
If your dealer programmed Transpond for 5-Tone  
Signalling, your transceiver will automatically send an  
acknowledgment signal to stations that called you with  
the correct signal.  
Note: This transceiver is also capable of decoding 2-Tone signals.  
However, you cannot make 2-Tone calls unless 2-Tone Signalling has  
been activated by your dealer.  
 
25  
AUXILIARY FUNCTIONS  
Selecting an Output Power  
Each channel is programmed with either high or low  
output power by your dealer. You can change the  
output power of only channels programmed as high.  
When you can reliably communicate with other  
parties without using high power, select low power by  
pressing the key programmed as RF Power Lo.  
Each time you press RF Power Lo, the output power  
toggles between high and low.  
Using low power conserves battery power and reduces  
the risk of interfering with other communications.  
The “LO” icon appears when you are using low power.  
Note:  
Pressing RF Power Lo while using a channel programmed with  
low power causes an error tone to sound.  
When changing a channel from high power to low power, all  
channels programmed with high power are changed to low.  
Time-out Timer (TOT)  
The purpose of the Time-out Timer is to prevent any  
caller from using a channel for an extended period of  
time.  
If you continuously transmit for a period of time that  
exceeds the programmed time, the transceiver will  
stop transmitting and an alert tone will sound. To  
stop the tone, release the PTT switch.  
Your dealer can program a warning function to alert  
you before the TOT expires. Continuously  
transmitting for the time specified by your dealer will  
cause the warning tone to sound.  
 
26  
Busy Channel Lockout (BCL)  
The Busy Channel Lockout feature is activated or  
deactivated by your dealer.  
When activated, BCL prevents you from interfering  
with other parties who may be using the same  
channel that you selected. Pressing the PTT switch  
while the channel is in use will cause your  
transceiver to emit an alert tone and transmission will  
be inhibited (you cannot transmit). Release the PTT  
switch to stop the tone and return to receive mode.  
Talk-Around  
You may occasionally experience an interruption in  
service (due to a power failure, etc.). During such an  
occurence, you can continue communication by  
using the Talk-Around feature, if it has been  
programmed by your dealer. Talk-Around allows you  
to communicate directly with other transceivers,  
without the use of a repeater. However, if the station  
you want to contact is too far away, or there are  
geographical obstacles in the way, you may not be  
able to contact the station.  
Toggle Talk-Around ON and OFF by pressing the key  
programmed as Talk-Around.  
“T” or “TA” appears on the display while Talk-Around is  
active.  
When using Talk-Around, the “receive” frequency is  
used for both transmission and reception, and the QT/  
DQT “decode” signalling is used for both encoding and  
decoding.  
 
27  
Battery Voltage Level  
While transmitting, the transceiver automatically  
checks the battery voltage level. When the voltage  
level becomes low, the LED indicator flashes red.  
When a tone sounds, transmission stops. Recharge  
or replace the battery pack at this time.  
Lamp  
Press the key programmed as Lamp to toggle the  
display backlight ON or OFF. The backlight  
automatically turns OFF approximately 5 seconds  
after it is switched ON.  
Press any key other than Lamp while the backlight is  
ON to reset the 5 second timer. The timer will reset  
and the backlight will remain on for 5 seconds.  
Beginning/ End of Transmission Signal  
Your dealer can enable or disable the Beginning/  
End of Transmission identification signals. These  
signals are used to access and release some  
repeaters and telephone systems.  
To send a Beginning of Transmission signal, either  
press the PTT switch, or press the key two times.  
To send an End of Transmission signal, either  
release the PTT switch or press the key followed  
by the # key.  
Ask your dealer which method has been activated on  
your transceiver.  
 
28  
Monitor/Squelch  
Your dealer can program a key with the Monitor or  
Squelch function one of four ways:  
Squelch Momentary: Press and hold the Squelch key to  
hear background noise. Release the key to return to  
normal operation.  
Squelch Off: Momentarily press the Squelch key to hear  
background noise. Press the key again to return to  
normal operation.  
Monitor Momentary: Press and hold the Monitor key to  
deactivate QT, DQT, DTMF, 2-Tone, or 5-Tone  
signalling. Release the key to return to normal  
operation.  
Monitor: Momentarily press the Monitor key to  
deactivate QT, DQT, DTMF, 2-Tone, or 5-Tone  
signalling. Press the key again to return to normal  
operation.  
You can use the Squelch key to listen to weak  
signals that you cannot hear during normal operation  
and to adjust the volume when no signals are  
present on your selected channel.  
 
29  

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