GME TX4610 User manual

TX4610 INSTRUCTION MANUAL PAGE 1
5 WATT IP67
UHF CB RADIO
INSTRUCTION MANUAL
TX4610

PAGE 2 INSTRUCTION MANUAL TX4610
IMPORTANT INFORMATION........................................ 3
SAFETY INFORMATION ................................................ 3
EMERGENCY CHANNELS........................................... 3
TELEMETRY CHANNELS............................................. 3
FEATURES ..................................................................... 4
CONTROLS.................................................................... 5
Front Panel .............................................................. 5
LCD Display.............................................................. 5
Microphone ............................................................ 5
GENERAL OPERATION ............................................... 6
Funcon Key............................................................ 6
Volume On/O ....................................................... 6
Selecng Channels ................................................. 6
Transming ............................................................ 6
Squelch Control ...................................................... 6
Squelch Sensivity ................................................. 6
Priority Channel...................................................... 7
Duplex Operaon................................................... 7
CTCSS............................................................................. 7
Overview ................................................................. 7
Monitoring the Channel........................................ 7
Selecng the Tone Set ........................................... 7
Selecng the Required CTCSS Tone .................... 7
Enabling CTCSS on a Channel............................... 7
Disabling CTCSS on a Channel.............................. 8
SCANNING.................................................................... 8
Overview ................................................................. 8
Scan Groups ............................................................ 8
Selecng the Scan Group ...................................... 8
Programming Scan Channels ................................ 8
To Start Scanning.................................................... 9
To Stop Scanning..................................................... 9
OPEN SCAN MODE ..................................................... 9
Using Scan in the Open Scan Mode...................... 9
GROUP SCAN MODE .................................................. 9
Seng Up the Group Scan .................................. 10
Scanning in the Group Scan Mode ..................... 10
Using Two Group Scan or Two Open Scan Modes 10
SELECTIVE CALLING ................................................. 11
Overview ............................................................... 11
SelCall Idencaon Number............................. 11
SelCall Indent Names ........................................... 11
The Quiet Mode (Q) ............................................. 11
SelCall Memories.................................................. 12
USING SELCALL.......................................................... 12
Entering a SelCall Indent...................................... 12
Sending a SelCall................................................... 12
Call Acknowledge ................................................. 12
Storing SelCall Indents.........................................12
Recalling SelCall Indents From Memory............13
Naming Your SelCall Indents...............................13
Displaying Alpha Names ......................................13
Entering and Storing a SelCall Name..................13
Receiving SelCalls ................................................. 14
Cancelling the SelCall Alert ................................. 14
Quiet Mode...........................................................15
Seng Up the Quiet Mode ................................. 15
Acvang the Quiet Mode.................................. 15
De-acvang the Quiet Mode............................15
Receiving Signals in the Quiet Mode..................15
Scanning in the Quiet Mode ...............................16
To Scan in the Quiet Mode .................................. 16
Receiving Signals while Scanning in the Quiet Mode .16
GROUP CALLING ....................................................... 16
Programming and Sending Group Calls............. 17
LISTENING CHANNELS............................................. 17
Seng the Frequency Steps ...............................18
Acvang Listening Channels.............................18
Programming the Frequencies ...........................18
Seng Alpha Labels for your Listening Channels .18
SEEK MODE ................................................................19
Enabling the Seek Mode......................................19
Scanning for Acve Frequencies in Seek Mode19
Seng Seek Mode Frequency Limits.................19
MENU SETTINGS.......................................................20
Overview ............................................................... 20
Frequency / Alpha Adjustments.........................21
Seng the Squelch Sensivity ...........................21
Selecng the Scan Mode.....................................21
Selecng Duplex................................................... 22
CTCSS Tones .........................................................22
Lamp Colour..........................................................23
Baery / S Metre / Alpha Selecon ...................23
LCD Contrast ......................................................... 24
Beep Tone Level.................................................... 24
INSTALLATION........................................................... 24
General .................................................................. 24
Installing the Unit .................................................25
DC Connecons .................................................... 25
Antenna Installaon............................................. 26
Noise Suppression................................................ 26
Disconnecng the Microphone.......................... 26
UHF CB OPERATING FREQUENCIES......................27
CTCSS TONE FREQUENCY CHART ......................... 28
SPECIFICATIONS........................................................ 29
SC CONTRACT WARRANTY AGAINST DEFECTS.30
CONTENTS

TX4610 INSTRUCTION MANUAL PAGE 3
IMPORTANT INFORMATION
CONCERNING UHF CB RADIO
The use of the Cizen Band radio service
is licensed in Australia by the ACMA Radio
communicaons (Cizens Band Radio
Staons) Class Licence and in New Zealand
by the Ministry of Economic Development
New Zealand (MED). A General User Radio
Licence for Cizens Band radio and operaon
is subject to condions contained in those
licences.
The class licence for users and equipment
operang in the CB/PRS 477 MHz band has
been amended. This radio meets the new 80
channel standard.
In simple terms the same amount of spectrum
is available; however, radio transceivers can
now operate in a narrower bandwidth and
hence use less spectrum. These radios are
generally referred to as narrowband or 12.5
kHz radios. By using 12.5 kHz channel spacing
instead of 25 kHz, the 40 channels originally
allocated can now be expanded to 80 channels
thereby doubling the channel capacity and
relieving congeson in the UHF CB/PRS band.
Original 40 channel wideband Radios will
connue to operate on the original 40 channels,
however they will not be able to converse
on the newer channels 41 – 80. The newer
narrowband radios will be able to converse
with all older 40 channel wideband radios on all
channels 1 to 40 as well as the newer channels
allocated from 41 to 80.
The mixing of narrowband and wideband
radios in the same spectrum can cause some
possible operang issues of interference and
varying levels of received volume.
SAFETY INFORMATION
The TX4610 is a radio transming device.
• When transming, keep the antenna more
than 25 mm from any part of the head
or body.
• Do not transmit near electrical blasng
equipment or in explosive atmospheres.
• Do not allow children to operate a radio
transmier unsupervised.
POSSIBLE ISSUES
When a new narrowband radio receives a
transmission from an older wideband radio the
speech may sound loud and distorted - simply
adjust the radio volume for best performance.
When an older wideband radio receives a signal
from a new narrowband radio, it may sound
quiet - simply adjust your volume for best
performance.
There can be interference from a transming
radio if it is close to another transming radio
using a channel adjacent to the channel you are
listening to. Simply try going up or down a few
channels from the currently selected channel.
The above situaons are not a fault of the radio
but a symptom of operang wideband and
narrowband radios in the same bandwidth. This
possible interference will decrease over me
as the populaon of wideband radios ages and
decreases.
Further informaon and updates are available
from the Australian Communicaons and Media
Authority (ACMA) at www.acma.gov.au and
the Ministry of Economic Development (MED),
Radio Spectrum Management at: www.rsm.
govt.nz
EMERGENCY CHANNELS
The ACMA has allocated channels 5/35 for
emergency use only. Channel 5 is the primary
Simplex Emergency Channel. Where a Channel
5 repeater is available, you should select Duplex
on CH 5.
NOTE: Channel 35 is the input channel
for the Channel 5 repeater therefore
Channel 35 should also not be used
for anything other than emergency
transmissions.
TELEMETRY CHANNELS
ACMA regulaons have allocated channels
22 and 23 for telemetry only applicaons and
have prohibited the transmission of speech on
these channels. Consequently the TX4610 has a
transmit inhibit applied to channels 22 and 23.
In the event addional telemetry/telecomand
channels are approved by the ACMA, these
channels shall be added to those currently
listed where voice transmission is inhibited.
Currently transmissions on channels 61, 62 and
63 are also inhibited and these channels are
reserved for future allocaon.

PAGE 4 INSTRUCTION MANUAL TX4610
FEATURES

User selectable for only those individual
channels in your area that have repeaters, leaving the others free for use as extra simplex
channels.

User Programmable Receive-Only Channels: Use the TX4610’s front panel controls to
program up to 19 of your own receive-only channels in the 403-520 MHz frequency range.

SCANNING AND MEMORY FUNCTIONS
Microprocessor Controlled Frequency Synthesiser: Allows user programmable control of
scanning, channel memories and selected feature opons.
 With Band Edge Selecon.
 Scans the programmable UHF CB channels with both Group
and Open scan funcons available.
Priority Channel: A user programmable Priority Channel feature allows your working or local
repeater channel to be instantly recalled at the press of a buon.
PRIVACY FUNCTIONS
In-Built Selcall: Selecve Calling with ve digit ANI and fully user-adjustable 5 tone
transmied SelCall Ident. Also allows naming of Idents for easier caller idencaon.
Unique Page (Transpond) mode: Allows you to transfer an incoming SelCall to another radio if
your radio is unaended.
Quiet Mode: Selectable on individual channels, Quiet mode prevents incoming signals from
being heard on selected channels unless preceded by your SelCall code.
CTCSS: A built-in Connuous Tone Coded Squelch System opon provides quiet channel
operaon.
PHYSICAL PROPERTIES
 Special overvoltage detecon circuitry protects the radio and warns
of excessive voltage condions by ashing the display.
Front Facing Speaker: Projects the sound forward for greater clarity.
Water & Dust proof IP67: Provides protecon against dust and temporary immersion in
water.
USER CONTROLS AND INTERFACE
Large High Contrast Liquid Crystal Display: Fully detailed LCD provides a visual indicaon of
the selected channel and all selected funcons at a glance. Backlit for viewing at night.
 Allows Scanning, Squelch, Duplex, Priority, Channel selecon and
CTCSS features to be enabled or disabled to make the radio simpler to operate.

TX4610 INSTRUCTION MANUAL PAGE 5
CONTROLS
MICROPHONE
MENU
F
SCAN
DIM
PRI
QUIET
SQL
ALPHA
Volume On/O
Microphone
Socket
Speaker Menu
FUNCTION
Scan
DIM
Priority
QUIET
Squelch
ALPHA
(Dim) Channel Down (Bright) Channel Up LCD Display
Channel Up
Channel Down
Push To Talk
PPT
Priority
Call/Skip
FRONT PANEL
LCD DISPLAY
CALL TO
CALL FROM
Transmit
Indicator
Duplex
indicator
Busy
Indicator
Scan Indicator
QUIET Mode
CTCSS
Indicator
Channel in
Memory
Indicator
QUIET Tag
SelCall
Call Mode
Alpha Numeric
Display
Channel Number

PAGE 6 INSTRUCTION MANUAL TX4610
GENERAL OPERATION
FUNCTION KEY
The four keys beneath the TX4610’s display
have both primary and secondary funcons.
Their primary funcons are printed in Black
while their secondary funcons are printed in
Red.

Simply press the required key. eg. To control the
Squelch, briey press the SQL key.

Press the F key followed immediately by the
required key. Eg. To Dim the display, briey
press the F key (‘F’ is displayed), then press the
DIM key. The display will dim.
NOTE: If the secondary key is not
pressed within 10 seconds the Fkey
selecon will be cancelled.
VOLUME ON/OFF
Rotate the volume control clockwise past
the ‘click’ to turn the TX4610 on. Connue to
advance the control clockwise to increase the
volume. Rotate the control counterclockwise to
turn the radio o.
NOTE: At minimum volume seng
there is sll sucient volume to be
heard in a quiet cabin environment.
SELECTING CHANNELS
Briey press the Channel key to step upwards
one channel or the Channel key to step
downwards one channel. A high beep will be
heard at each press.
Press and hold the or key for 1.5 seconds
to scroll quickly upwards or downwards
through the channels at a rate of 10 channels
per second. When the key is released channel
scrolling stops.
TRANSMITTING
Prior to transming, always check the channel
is not being used. This can be done by either
listening or by checking the ‘Busy’ indicator is
not lit.
To transmit, press the PTT (Push-to-Talk) buon
on the microphone. Hold the microphone about
5-8 cm from your face and speak at a normal
voice level. The microphone is quite sensive so
it is not necessary to raise your voice or shout.
Release the PTT when you have nished talking.

The Squelch control is used to eliminate the
background noise when there are no signals
present. The TX4610 features a preset Squelch
system. The Squelch sensivity has been
factory set to provide opmum performance
in most environments, however the sensivity
can be altered by the user if required, to suit
varying environmental situaons.
The Squelch can be opened or closed with
the SQL key. When the Squelch is open, the
receiver’s background noise can be heard
and ‘BUSY’ is displayed. When the Squelch is
closed, the receiver remains quiet when there
are no signals present but an incoming signal
will override the squelch and be heard in the
speaker.
To open the Squelch
Briey press the SQL key. A low beep will be
heard. If there are no signals present you will
hear the receiver’s background noise.
To close the Squelch
Briey press the SQL key again. A high beep will
be heard and the receiver will become quiet.
NOTE: If an incoming signal is very
weak and is close to the minimum
squelch level, it may become broken
or ‘chopped’ by the squelch acon. To
prevent this, simply open the Squelch
to allow the signal to be heard clearly.
Alternavely you can reduce the Squelch
sensivity as described below.
SQUELCH SENSITIVITY
The sensivity of the Squelch to incoming
signals can be set to suit your operang
environment. For example, excessively noisy
environments may cause the squelch to open on
local noise. The TX4610 has ten preset Squelch
sensivity sengs that can be selected using
the MENU funcon.

TX4610 INSTRUCTION MANUAL PAGE 7

Please refer to the MENU sengs on page 21.
PRIORITY CHANNEL
The Priority Channel feature allows you to store
one of the channels as a Priority Channel that
can be instantly recalled at the press of a key.
This can be used to provide instant access to
your working channel or your local repeater
channel.
To store a Priority Channel
1. Select the required channel.
2. Press and hold the PRI key unl a high beep is
heard. The selected channel will be stored.
To recall a Priority Channel
Briey press the PRI key. The radio will switch
straight to the selected Priority Channel. Any
acve funcons (such as Scanning or Quiet) will
be cancelled.
DUPLEX OPERATION
Duplex operaon allows the radio to transmit
on a dierent frequency to that which is
receives. This allows operaon through local
repeater staons. These repeater staons
automacally re-transmit your signal over a
wider area, providing greatly increased range.
Duplex operaon is only available on channels
1-8 and 41-48. When duplex is selected on these
channels, the radio receives on that channel but
actually transmits 30 channels higher.
To select Duplex operaon please refer to the
MENU sengs on Page 22.
CTCSS
OVERVIEW
CTCSS (Connuous Tone Coded Squelch System)
is a squelch quieng system that allows several
groups of users to share the same channel
without disturbing each other. It uses a preset
sub-audible (very low frequency) tone to open
and close the squelch on your radio. There are
up to 50 tones available in two oponal tone
sets. The system applies a connuous low-level
tone to your transmission and uses a matching
tone decoder to control your receiver’s squelch.
With CTCSS enabled, the channel remains quiet
to all incoming signals unless they carry the
correct tone. When a transmission with the
correct tone is received, the squelch opens
and remains open for as long as the signal is
present. When the transmission ends, the
channel becomes quiet again. Transmissions
that do not use the correct tone will not be
heard.
The TX4610 allows CTCSS to be enabled or
disabled on individual channels.
NOTE: The CTCSS tone you select will be
used for all CTCSS enabled channels in
your radio.
MONITORING THE CHANNEL
It is useful to be able to temporarily open
your radio’s squelch to allow you to listen for
signals from other CTCSS users outside your
group. Because their CTCSS tone is dierent
to yours, your squelch would normally remain
closed, prevenng you from hearing them.
You can use the SQL key to open the squelch
and listen to the channel to check that it is clear
before transming. This will help prevent you
from accidentally transming over the top of
someone.
To monitor the Channel
Press the SQL key. If there are no signals
present, you will hear the usual hiss of an empty
channel. Press the SQL key again to restore the
Squelch to its previous seng.
SELECTING THE TONE SET
There are two standard tones sets available,
one comprising 50 tones and the other
comprising 38 tones. Both tone sets are included
in the TX4610 to provide compability with other
GME radio systems.
SELECTING THE REQUIRED CTCSS TONE
To preselect the CTCSS tone on your radio,
please refer to the MENU sengs on page 22.
ENABLING CTCSS ON A CHANNEL
If a CTCSS tone has been selected, it can be
enabled on individual channels.

PAGE 8 INSTRUCTION MANUAL TX4610
1. Press the or keys to select the required
channel.
2. Press and hold the SQL key. A high beep
will be heardand ‘SILENT’ will appear on the
display.
You may acvate CTCSS on as many channels
as you wish except channel 5/35 which is
designated for emergency use.
DISABLING CTCSS ON A CHANNEL
Repeat steps 1 and 2 above. A low beep will be
heard and ‘SILENT’ will disappear.
NOTE: You will not be able to acvate
CTCSS if the CTCSS tone is set to ‘oF’.
SCANNING
OVERVIEW
The TX4610 has a SCAN funcon that allows
groups of user programmable channels to be
scanned for signals. Channels can be scanned at
20 channels per second. When a signal is found,
scanning will pause on that channel to allow the
signal to be heard, then resume scanning when
the channel is clear again.
SCAN GROUPS
The TX4610 features two scan groups - Open
Scan and Group Scan.
Open Scan
Allows any of the installed channels to be
scanned for acvity. If a busy channel is found,
scanning will pause to allow the signal to be
heard. Once the channel has been clear for 5
seconds, scanning will resume automacally.
eg: Scanning channels 1 - 8 in Open Scan
Group Scan
Also allows any of the installed channels to
be scanned for acvity, but in addion, it also
inserts your Priority channel into the scan
sequence. This means that your Priority channel
will be monitored regularly while scanning to
ensure that no calls are missed. Any signals
received on your Priority channel will take
precedence over any signals received on the
other channels.
213420 567820
eg: Scanning channels 1 - 8 with Priority channel
20 in Group Scan.
SELECTING A SCAN GROUP
To preselect a Scan Group
The radio is inially set to Open Scan Mode.
Please refer to the MENU sengs on page 21 to
change the Scan Group.
PROGRAMMING SCAN CHANNELS
Your TX4610 is supplied with all 80 UHF CB
channels programmed into the Open Scan
memory. Any channels not needed, can be
removed if required. The Group Scan memory is
empty by default and you will need to add
channels to it before use.
To add or remove Channels from either
Scan Memory
1. Ensure that the radio is not already scanning.
If it is, briey press the SCAN key to cancel
the scan funcon.
2. Ensure you have the required scan group
preselected (See MENU sengs on page
21).
3. Select the required channel using the or
keys.
• If ‘M’ is visible to the right of the channel
number, the selected channel is already in the
scan memory. It can be removed by holding
the SCAN key in for a few seconds unl a
21 345678

TX4610 INSTRUCTION MANUAL PAGE 9
low beep is heard. ‘M’ will then disappear
indicang the channel is no longer in memory
• If ‘M’ is not visible, then the selected channel
is not in the memory. To add it, hold the
SCAN key in for a few seconds unl a high
beep is heard. ‘M’ will now appear.
4. Repeat step 3 to add or remove other
channels in the scan memory.
TO START SCANNING
To begin scanning, briey press the SCAN key.
A high beep will be heard, ‘SCAN’ will appear in
the display and the radio will begin scanning.
In addion the selected scan group will be
displayed below the channel number.
NOTE: If there is only one channel
programmed into the Open Scan
memory or none in the Group Scan
memory, a long low beep will be heard
when you press the SCAN key and the
command will be ignored.
TO STOP SCANNING
To cancel the Scan, briey press the SCAN
key. A low beep will be heard and ‘SCAN’ will
disappear from the display.
OPEN SCAN MODE
USING SCAN IN THE OPEN SCAN MODE
• If a busy channel is found, scanning will
pause on that channel to allow the signal to
be heard and will remain there for as long as
the channel remains busy. Once the channel
has been clear for 5 seconds, scanning will
resume automacally.
• If your radio pauses on a busy channel and
you don’t wish to listen to that conversaon,
briey press the SKIP buon on the
microphone (or one of the channel selector
keys). The radio will skip over that channel
and resume scanning from the next channel
in the sequence.
• If your radio is paused on a busy channel and
you wish to remain there, briey press the
SCAN key. The radio will exit the Scan mode
and remain on the busy channel.
• To transmit while paused on a busy channel,
simply press the PTT buon. The radio will
exit the Scan mode and remain on the busy
channel. You can now converse on that
channel in the usual way. When you have
nished your conversaon, briey press the
SCAN key to resume scanning.
• If your radio is scanning and you need to use
your Priority channel (for an urgent call or an
emergency), briey press the PRI key. The
Scan mode will be cancelled and the radio will
jump straight to the Priority channel.
NOTE: In the Open Scan mode your
TX4610 will not allow you to transmit
while it is scanning. If the PTT buon
is pressed while scanning, the radio
will give a low beep and will ignore the
command. Your radio will only transmit
while it is paused on a busy channel.
GROUP SCAN MODE
Group Scan allows you to transmit and receive
normally on your priority (working) channel,
while connuing to scan several other channels.
The receiver will scan the other channels
ONLY WHILE THERE ARE NO SIGNALS ON THE
PRIORITY CHANNEL.
If a signal appears on the Priority channel it will
override any signals being received on any of
the other channels. In addion, if you press the
PTT buon at any me, the radio will transmit
on the priority channel in the usual way.

PAGE 10 INSTRUCTION MANUAL TX4610
SETTING UP THE GROUP SCAN
Referring to the appropriate secons of this
manual:
1. Preselect the Group Scan mode (see MENU
sengs on page 21).
2 . Store your preferred working channel into
the Priority channel memory (see ‘Priority
Channel’).
3. Program the required ‘other’ channels into
your Group Scan memory (see ‘Programming
Scan Channels’).
SCANNING IN THE GROUP SCAN MODE
To scan in the Group Scan mode, briey press
the SCAN key. A high beep will be heard,
‘SCAN’ will appear in the display and the radio
will begin scanning.
NOTE: If there are no channels
programmed in the Group Scan memory
when you press the SCAN key (or there
is only one channel programmed and
it is the same as the Priority channel),
a low beep will be heard and the
command will be ignored.
When scanning, the TX4610 scans all the
channels programmed into the Group Scan
memory, with the Priority channel being
scanned aer every fourth channel (Dealer
programmable opon, if you require dierent
ming for your priority channel, please contact
your dealer).
• If a signal appears on the priority channel - at
any me - the receiver will switch straight to
the Priority channel and will stay there for
as long as the channel is busy. During this
me you can transmit on the priority channel
in the usual way. Once there has been no
acvity for 5 seconds, the radio will resume
scanning the other channels.
• If a signal appears on one of the other
channels, scanning will pause on that channel
and will remain there while the channel is
busy, as long as there are no signals on the
priority channel. During this me the receiver
will connue to check the priority channel
for signals every 2 seconds, resulng in a
series of small ‘breaks’ in the recepon of
the paused channel. Once there has been
no acvity on any channel for 5 seconds, the
radio will resume scanning.
• If your radio pauses on a busy channel and
you don’t wish to listen to that conversaon,
briey press the SKIP buon on the
microphone (or one of the channel selector
keys). The radio will skip over that channel
and resume scanning from the next channel
in the sequence.
• If your radio is paused on a busy channel and
you wish to remain there, briey press the
SCAN key. The radio will exit the Scan mode
and remain on the busy channel. Note that
the radio will no longer be monitoring the
Priority channel (unless it is the same as the
busy channel). To resume scanning, press the
SCAN key again.
• To transmit on a scanned channel, press the
PTT buon while the radio is paused on that
channel, then talk in the usual way. The radio
will resume scanning when you have nished
your conversaon and there has been no
further acvity on the channel for 5 seconds.
• To transmit on the priority (working) channel
AT ANY TIME, simply press the PTT buon
while the radio is scanning. The radio will
switch straight to the priority channel. When
you have nished your conversaon and
there has been no further acvity on the
priority channel for 5 seconds, the radio will
resume scanning the other channels.
• To go directly to the Priority channel, briey
press the PRI key. The radio will exit the Scan
mode.
USING TWO GROUP SCAN OR TWO
OPEN SCAN MODES
If you prefer, the TX4610 can be re-
programmed to have two Group Scan modes or
two Open Scan modes instead of one of each.
For example there may be applicaons where
you have no need to scan the Priority channel
and would prefer to have two separate Open
Scan modes. Alternavely you may have
applicaons where you prefer to have two Group
Scan modes with dierent Scan groups in each.