GME TX3345 User manual

INSTRUCTION MANUAL
Super compact, remote mic 5 watt UHF CB radio.

PAGE 2 INSTRUCTION MANUAL TX3345
INTRODUCTION ....................................................................3
IMPORTANT INFORMATION...................................................3
EMERGENCY CHANNELS.......................................................4
TELEMETRY CHANNELS.........................................................4
FEATURES .............................................................................4
GENERAL OPERATION...........................................................5
MC524B Controller Microphone.....................................5
Display...........................................................................5
Function Keys.................................................................5
Volume Key....................................................................5
Transmitting...................................................................6
Squelch..........................................................................6
Squelch Sensitivity..........................................................6
Menu ............................................................................7
Backlighting...................................................................7
Key Beeps......................................................................7
Signal Meter/Battery Meter ............................................8
Priority Channel .............................................................8
Duplex Operation...........................................................8
Dynamic Volume Control (DVC) ......................................9
CTCSS & DCS........................................................................9
Choosing the CTCSS or DCS Tone...................................9
To select a CTCSS or DCS Tone .....................................10
Enabling CTSS/DCS on a Channel.................................10
Disabling CTCSS/DCS on a Channel..............................10
MONITORING THE CHANNEL...............................................10
SCANNING .........................................................................11
Scan Groups ................................................................11
Selecting a Scan Group ................................................11
Programming Scan Channels........................................11
OPEN SCAN MODE ............................................................12
GROUP SCAN MODE..........................................................12
Nuisance Channel Skip.................................................13
Quick Channel Select ...................................................13
Using two Group Scan or two Open Scan Modes ..........13
SELECTIVE CALLING............................................................13
Selcall Indentification Number (IDENT)..........................14
Selcall Ident Labels.......................................................14
The Quiet Mode ...........................................................14
USING SELCALL ..................................................................14
Entering a Selcall Ident.................................................14
Call Acknowledge ........................................................15
Selcall Memories..........................................................15
Labelling your Sellcall Idents.........................................15
Receiving Selcalls.........................................................16
Quiet Mode .................................................................16
Scanning in the Quiet Mode.........................................17
GROUP CALLING.................................................................18
INSTALLATION ....................................................................19
Antenna Installation.....................................................19
DC Power Connection ..................................................21
High Voltage Warning...................................................22
Antenna Connection ....................................................22
CTCSS TONE FREQUENCY CHART........................................23
DCS TONE CHART................................................................24
UHF CB OPERATING FREQUENCIES .....................................25
SPECIFICATIONS .................................................................26
SC CONTRACT WARRANTY AGAINST DEFECTS....................27
CONTENTS

TX3345 INSTRUCTION MANUAL PAGE 3
INTRODUCTION
Your GME TX3345 80 channel is Australian designed and built
and is the most advanced UHF Citizen Band radio available.
The TX3345 combines the very latest in electronic hardware
with the most up-to-date computer aided design and
manufacturing techniques to produce an extremely compact
mobile radio with outstanding specifications and performance.
The TX3345 with its Controller Microphone is designed for
unobtrusive mounting in modern vehicles. The radio case
with its built-in loud speaker and extremely small size can be
mounted in almost any convenient location.
IMPORTANT INFORMATION
CONCERNING 80 CH UHF CB RADIO
The use of the Citizen Band radio service is licensed in
Australia by the ACMA radio communications (Citizens
Band radio stations) Class Licence and in New Zealand by
the Ministry of Economic Development New Zealand (MED).
A General User Radio Licence for Citizens Band radio and
operation is subject to conditions contained in those licences.
The class licence for users and equipment operating 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
congestion in the UHF CB/PRS band.
Original 40 channel wideband Radios will continue 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 operating issues of
interference and varying levels of received volume.
Possible issues
When a new narrowband radio receives a transmission from an
older wideband radio the speech may sound loud and distorted
– simply adjust your radio volume for best performance.
When an older wideband radio receives a signal from a new
narrowband radio, the speech may sound quiet – simply adjust
your radio volume for best performance.
Depending on how close your receiving radio is to another
transmitting radio, there can be interference from the
transmitting radio if it is 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
situations are not a fault of the radio but a symptom of
operating wideband and narrowband radios in the same
bandwidth. This possible interference will decrease over time
as the population of wideband radios ages and decreases.
Further information and updates are available from the
Australian Communications and Media Authority (ACMA) at
www.acma.gov.au and the Ministry of Economic Development
(MED), Radio Spectrum Management at: www.rsm.govt.nz
ACCESSORIES SUPPLIED
• Main Radio Unit
• Mounting Cradle
• Instruction Manual
• MC524B LCD Microphone
• Microphone Clip
• DC Lead
• Screw Pack
If any items are missing or
damaged, please contact your
retailer or place of purchase .

PAGE 4 INSTRUCTION MANUAL TX3345
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 regulations have allocated Channels 22 and 23
for telemetry-only applications and have prohibited the
transmission of speech on these channels. Consequently the
TX3345 has a transmit inhibit applied to channels 22 and 23.
In the event additional telemetry/telecommand 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 allocation.
FEATURES
•Controller Microphone: Complete control of the radio from
the microphone simplifies installation.
•Microprocessor Controlled Frequency Synthesiser: Allows
user programmable control of scanning, channel memories
and selected feature options.
•Programmable Scan Function: Scans the programmable
UHF CB channels with both Group and Open scan functions
available.
•Individually Programmable DUPLEX function: User
selectable for only those individual channels in your area that
have repeaters, leaving the others free for use as extra
simplex channels.
•Digital Signal Processing: Measures, filters and compresses
standard analogue audio signals and converts them into
digital format. Allows advanced RF and audio processing
techniques to be applied to maximise the radio’s performance.
•
Advanced Signal Management (ASM): Identifies
interference caused by strong local signals on adjacent
channels and prevents it from opening your Squelch. ASM
also minimises distortion on reception by fine tuning the
receiver frequency to match that of the incoming signal.
This prevents your Squelch from opening to unwanted
interference and ensures that incoming signals remain clear
and undistorted even when they are slightly off-frequency.
• Dynamic Volume Control (DVC): Automatically compensates
for variations in received audio level resulting in a constant
audio output level to the speaker.
•Priority Channel: A user programmable Priority Channel
feature allows your working or local repeater Channel to be
instantly recalled at the press of a button.
•High Contrast Liquid Crystal Display: Fully detailed LCD
provides a visual indication of the selected channel and all
selected functions at a glance. Backlit for viewing at night.
•In-Built Selcall: Selective Calling with five digit ANI and fully
user-adjustable 5 tone transmitted Selcall Ident. Also allows
naming of Idents for easier caller identification.
•Quiet Mode: Selectable on individual channels, Quiet mode
prevents incoming signals from being heard on selected
channels unless preceded by your Selcall code.
•CTCSS & DCS: A built-in Continuous Tone Coded Squelch
System and Digital Coded Squelch option provides quiet
channel operation.
•Overvoltage Protection: Special overvoltage detection
circuitry protects the radio and warns of excessive voltage
conditions by flashing the display.
•Surface Mount Technology: The very latest surface mount
component types, design and assembly techniques and
quality control procedures are used to ensure the highest
performance and reliability.
•Designed and Manufactured in Australia: The TX3345 has
been totally designed and manufactured in Sydney NSW to
meet the demanding needs of the Australian community.

TX3345 INSTRUCTION MANUAL PAGE 5
GENERAL OPERATION
MC524b MiCroPhone/Controller
FunCtion Keys
There are several keys beneath the microphone controller’s
display that have dual functions. Their primary functions are
printed in black and their secondary functions are printed in red.
To access the primary (black) functions
Press the key with the required function labelled in black. e.g.
To control the Squelch, briefly press the
SQL
ALPHA
key.
To access the secondary (red) functions
Press the Function key
MENU
F
followed immediately by the key
with the required function labelled in red.
NOTE: If the secondary key is not pressed within 10 seconds
the
MENU
F
key selection will time-out.
VoluMe Key
+
–
+
–
Press the
+
–
key to increase the volume and the
+
–
key
to decrease the volume.
NOTE: At minimum volume setting there is still sufficient
volume to be heard in a quiet cabin environment.
Channel Up
Push-To-Talk (PTT) Skip/Call
Channel Down
Menu/
F Key
Power Key/
Monitor
Quiet/
Duplex
Squelch/
ALPHA
SCAN/
OS/GS
Squelch level/
Priority channel
Microphone
Volume Up
Volume Down
LCD Display
Quiet Tag
Channel Display
Transmit
Busy
Selcall RX
Scan
Selcall/Alpha Display/Signal Meter/Battery Quiet CTCSS/DCS
Selcall TX
Repeater (Duplex)
DisPlAy

PAGE 6 INSTRUCTION MANUAL TX3345
Selecting Channels
Press the or keys to step upwards or downwards
one or more channels. Press and hold to advance through the
channels at a faster rate.
trAnsMitting
Prior to transmitting, always check the channel is not being
used. This can be done by either listening or by checking the
indicator is not lit.
To transmit, press the PTT button. Hold the microphone about
5-8 cm from your face and speak at a normal voice level.
The microphone is quite sensitive so it is not necessary to raise
your voice or shout. Release the PTT when you have
finished talking.
IMPORTANT: Always listen to ensure the channel is free
before transmitting.
squelCh
The Squelch is used to eliminate the background noise when
there are no signals present. The TX3345 features a preset
Squelch system. The Squelch sensitivity has been factory set to
provide optimum performance in most environments, however
the sensitivity can be altered by the user if required, to suit
varying environmental situations.
The Squelch can be opened or closed by pressing the
SQL
ALPHA
key. When the Squelch is open, the receiver’s background
noise can be heard and 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
Briefly press the
SQL
ALPHA
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
Briefly press the
SQL
ALPHA
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 action. To prevent this, simply open the Squelch
to allow the signal to be heard clearly. Alternatively you can
reduce the Squelch sensitivity as described below.
squelCh sensitiVity
The sensitivity of the Squelch to incoming signals can be set
to suit your operating environment. In quiet rural locations
a low setting will allow the weakest signals to be received
while still keeping the radio quiet between transmissions. In
city locations, a higher setting might be needed to ensure
the Squelch remains closed when subjected to the higher
interference levels often encountered in high density areas.
The TX3345 has nine (9) preset Squelch sensitivity settings
labelled SQL-1 to SQL-9. The minimum Squelch setting (SQL-1)
is the most sensitive and will allow the Squelch to open on very
weak signals. SQL-9 is the maximum setting, requiring very
strong signals to open the Squelch. The factory default is
SQL-3 which generally provides reliable Squelch operation for
most applications.
To adjust the Squelch sensitivity
1. Briefly press the LVL
PRI key. ‘SQL-X’ will be displayed where
X is a value from 1 to 9.
2. Press the or keys to change the Squelch value.
The Squelch adjustment is live allowing you to adjust the
Squelch to suit your current environment.
3. When your adjustment is complete, briefly press the LVL
PRI
key to return to normal operation.
NOTE: The Squelch level can also be adjusted within the Menu.

TX3345 INSTRUCTION MANUAL PAGE 7
Menu
The Menu provides a convenient way to customise your radios
settings.
The following Menu options are available.
MENU
ITEM
FUNCTION AVAILABLE
SETTINGS
SQL Adjust Squelch Level SQL--1 TO SQL--9
CTCSS Set CTCSS or DCS Code CTCOF
CTC01 -> CTC50
DC001 -> DC104
LIGHT Adjust Display Brightness See Display
COLOR Adjust Display Colour See Display
WHITE Adjust Colour Saturation See Display
S-METER/
BATT
Display S-Meter or Battery
Voltage on the LCD
S-MET / BATT
BEEP Adjust Key Beep-Tone
Volume
VOL--0 -> VOL--9
DVC Activate/ Deactivate the
Dynamic Volume Control
DVCOF / DVCON
To use the Menu
Press and hold the
MENU
F
key until the radio beeps. ‘SQL’ will
be displayed indicating the first Menu item (Squelch setting
mode) is selected.
Briefly press the
MENU
F
key to cycle through the Menu items.
Press the or keys to adjust the selected Menu item.
When finished, press and hold the
MENU
F
key to exit the Menu
or wait until the Menu times out.
To adjust the Squelch sensitivity from the Menu
1. Press and hold the
MENU
F
key for several seconds. The radio
will enter Menu mode and ‘SQL’ will be displayed.
2. Press the or keys to adjust the Squelch value.
3. When your adjustment is complete, briefly press the
MENU
F
key to return to normal operation.
bACKlighting
The Liquid Crystal Display and keys are backlit for easy viewing
at night. The backlight remains on while the radio is switched
on. The backlighting brightness, colour and saturation are all
fully adjustable for personal preference.
To adjust the Backlighting:
1. Press and hold the
MENU
F
key for several seconds. The radio
will enter Menu mode and ‘SQL’ will be displayed.
2. Press the
MENU
F
key repeatedly until ‘LIGHT’ is displayed.
3. Press the or keys to adjust the backlight
brightness.
4. Press the
MENU
F
key briefly. ‘COLOR’ is displayed.
5. Press the or keys to adjust the backlight colour.
The full spectrum of colours is available.
6. Press the
MENU
F
key briefly. ‘WHITE’ is displayed.
7. Press the or keys to adjust the whiteness or
colour saturation of the selected backlight colour from full
colour to white (no colour).
8. To exit, press and hold the
MENU
F
key or wait for the Menu
to time out.
TIP: For the deepest colour range, reduce the WHITE setting.
Key beePs
The key beeps act as confirmation of your key presses. You can
adjust the volume level of the beeps as follows.
1. Press and hold the
MENU
F
key for several seconds. The radio
will enter Menu mode.
2. Press the
MENU
F
key repeatedly until ‘BEEP’ is displayed.
3. Press the or keys to adjust the beep volume from
0 (silent) to 9 (loud).
4. To exit, press and hold the
MENU
F
key or wait for the Menu to
time out.

PAGE 8 INSTRUCTION MANUAL TX3345
signAl Meter/bAttery Meter
The TX3345 includes a digital signal strength meter that
shows the relative strength of incoming signals on the display.
The meter displays signal strengths in values from 0 (very
weak) to 9 (very strong). Signals that exceed strength 9 are
shown as 9+
The TX3345 can also be set to display a battery meter instead
of the signal meter. The battery meter displays the voltage of
the connected power source with a resolution of 0.1 V. The
Signal Meter is selected by default.
To switch between Signal Meter and Battery Meter:
1. Press and hold the
MENU
F
key for several seconds. The radio
will enter Menu mode.
2. Press the
MENU
F
key repeatedly until ‘S-MET’ (S Meter) or
‘BATT’ (Battery) is displayed.
3. Press the or keys to select the required option.
4. To exit, press and hold the
MENU
F
key or wait for the Menu
to time out.
Priority ChAnnel
The Priority Channel feature allows you to store one channel
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. Briefly press the
MENU
F
key then press and hold the LV L
PRI
key. The selected channel will flash followed by a high beep
as the channel is stored.
To recall a Priority Channel
Briefly press the
MENU
F
key then briefly press the LV L
PRI key.
The radio will switch straight to the selected Priority Channel.
Any active functions (such as Scanning or Quiet) will be
cancelled.
DuPlex oPerAtion
Duplex operation allows the radio to transmit on a different
frequency to that which it receives allowing operation through
repeater stations. Repeaters automatically re-transmit your
signal over a wider area, providing greatly increased range.
Duplex operates only 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.
The TX3345 allows you to select Duplex operation individually
on each channel.
To select Duplex:
1. Select the required channel 1-8 or 41-48.
2. Briefly press the
MENU
F
key then press the
QUIET
DUP
key.
will appear on the display accompanied by a high beep.
To remove Duplex from a channel
1. Select the required channel 1-8 or 41-48. will be visible
on the display.
2. Briefly press the
MENU
F
key then press the
QUIET
DUP
key.
will disappear from the display accompanied by a low beep.
Vehicle
Simplex/Duplex Range Comparison
Simplex
Repeater
operation
Channel 31
Channel 1
Repeater
Station
Channel 1
Channel 31
Vehicle

TX3345 INSTRUCTION MANUAL PAGE 9
Channel Selected Receive Channel Transmit Channel
1 1 31
2 2 32
3 3 33
4 4 34
5* 5* 35*
6 6 36
7 7 37
8 8 38
41 41 71
42 42 72
43 43 73
44 44 74
45 45 75
46 46 76
47 47 77
48 48 78
*Emergency Channel only
DynAMiC VoluMe Control (DVC)
The modulation level of signals heard on the UHF CB band
often vary considerably resulting in noticeable differences in
received audio volume between stations. In the past, users
have compensated for this by adjusting the volume control for
each incoming signal. However with the introduction of 80
channel narrowband transmissions, the diversity in received
audio volume has increased even further. The TX3345’s
Dynamic Volume Control is designed to automatically
compensate for these variations in received audio level to
provide a constant audio output level to the speaker.
To select the Dynamic Volume Control:
1. Press and hold the
MENU
F
key to enter the Menu.
2. Press the
MENU
F
key repeatedly until DVCxx is displayed.
3. Press the or keys to select DVCOF (Dynamic
Volume Control Off) or DVCON (Dynamic Volume Control
On).
4. When finished, press and hold the
MENU
F
key or wait for the
Menu to time out.
CTCSS & DCS
CTCSS (Continuous Tone Coded Squelch System) and DCS
(Digitally Coded Squelch) are Squelch quieting systems that
allow several groups of users to share the same channel
without disturbing each other. There are three optional tone
sets available comprising 38, 50 or 104 codes.
CTCSS and DCS systems apply a continuous low-level low
frequency tone to your transmission with a matching decoder
at the receiver to control your radio’s Squelch. With CTCSS
or DCS 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 TX3345 allows CTCSS or DCS to be enabled or disabled on
selected channels and the CTCSS/DCS tone you select will be
used for all CTCSS/DCS enabled channels in your radio.
Choosing the CtCss or DCs tone
Choosing which tone to use will probably be dependent on
the other radios you talk to. If you talk to others outside your
group who already use CTCSS or DCS tones, you will need
to select the tone set and frequency that matches theirs. The
TX3345 supports CTCSS 50 and CTCSS 38 tone sets as well
as 104 DCS tones. If the users you talk to don’t currently use
CTCSS or DCS you can make your own choice. There is no

PAGE 10 INSTRUCTION MANUAL TX3345
difference in performance between the different tone sets.
If using CTCSS you can chose either the 50 tone set or the 38
tone set. GME radios traditionally use the 50 tone set, however
the 38 tone set is also included for compatibility with other
radios.
To switch between the 50 and the 38 tone/ set:
1. Switch the radio off.
2. Press and hold the
SQL
ALPHA
key while switching the radio
on again.
3. CTC50 or CTC38 will be displayed briefly to indicate the
selected tone set.
to seleCt A CtCss or DCs tone
NOTE: When selecting tones, CTCSS tones are prefixed with ‘CTC’
and DCS tones are prefixed with ‘DC’. Please refer to the CTCSS/
DCS table later in this manual for a list of tone numbers and their
associated frequencies.
1. Press and hold the
MENU
F
key until the radio beeps.
2. Briefly press the
MENU
F
key repeatedly until ‘CTCxx’ or
‘DCxxx’ is displayed (where xx represents a tone number in
the CTCSS or DCS Tone Frequency Chart).
3. Press the or keys to scroll through the tone list
and select the required CTCSS or DCS tone. CTCSS tones
are grouped in the lower half of the list while DCS tones are
grouped above the CTCSS tones.
4. If you wish to view the CTCSS frequency or DCS tone
instead of the table number, briefly press the LV L
PRI key. To
return to the table code, briefly press the LV L
PRI key again.
5. To disable CTCSS or DCS tones altogether scroll to the
bottom of the list and select ‘CTCoF’.
6. To store the setting, press and hold the
MENU
F
key until the
radio beeps or wait for it to time out.
enAbling CtCss/DCs on A ChAnnel
Once a CTCSS or DCS tone has been selected, it can be
enabled on individual channels.
1. Press the or keys to select the required channel.
2. Press and hold the
SQL
ALPHA
key. A high beep will be heard and
the (CTCSS) or (DCS) will appear indicating that the
‘Silent’ mode has been activated on that channel.
You may activate CTCSS or DCS on as many channels as you
wish except channel 5 which is designated for emergency use.
DisAbling CtCss/DCs on A ChAnnel
1. Press the or keys to select the required channel.
The or icon will be visible indicating that the ‘Silent’
mode is currently enabled on that channel.
2. Press and hold the
SQL
ALPHA
key. A low beep will be heard and
the or icon will disappear indicating that the ‘Silent’
mode has been disabled on that channel.
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/DCS
users outside your group. Because their CTCSS/DCS tone is
different to yours, your Squelch would normally remain closed,
preventing you from hearing them. You can use the
SQL
ALPHA
key
to open the Squelch and listen to the channel to check that
it is clear before transmitting. This will help prevent you from
accidentally transmitting over the top of others.
To monitor the channel
Briefly press the
SQL
ALPHA
key. If there are no signals present, you
will hear the usual hiss of an empty channel. Press the
SQL
ALPHA
key again to restore the Squelch to its previous setting.

TX3345 INSTRUCTION MANUAL PAGE 11
SCANNING
The TX3345 has a SCAN function 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 TX3345 features two scan groups by default - Open Scan
and Group Scan.
Open Scan
Allows any of the installed channels to be scanned for activity.
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 automatically.
e.g. Scanning channels 1-8 in Open Scan.
Group Scan
Also allows any of the installed channels to be scanned for
activity, but in addition, it 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.
e.g. Scanning channels 1-8 with Priority Channel 20 in
Group Scan.
seleCting A sCAn grouP
To pre-select a scan group
The radio is initially set to Open Scan mode. To toggle between
Scan Groups, press the
MENU
F
key followed by the
SCAN
OS/GS
key.
‘OPEN’ or ‘GROUP’ will be displayed briefly to confirm your
selection.
ProgrAMMing sCAn ChAnnels
Your TX3345 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, briefly
press the
SCAN
OS/GS
key to cancel the scan function.
2. Ensure you have the required scan group selected (Open
Scan or Group Scan.
3. Select the required channel by using the or keys
• If is visible to the right of the channel number, the
selected channel is already in the scan memory.
•If is not visible, then the selected channel is not in
the memory.
4. To add or remove the selected channel, press and hold the
SCAN
OS/GS
key for a few seconds until a beep is heard.
5. Repeat step 3 & 4 to add or remove other channels in the
scan memory.
To start scanning
To begin scanning, briefly press the
SCAN
OS/GS
key. A high beep will
be heard, the icon will animate on the display and the
radio will begin scanning. In addition 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
OS/GS
key and the
command will be ignored.
To stop scanning
To cancel the scan, briefly press the
SCAN
OS/GS
key. A low beep will
be heard and the icon will disappear from the display.
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8
1 - 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20

PAGE 12 INSTRUCTION MANUAL TX3345
OPEN SCAN MODE
Before scanning, select your preferred working channel using
the or keys. Your working channel is the default
channel your radio will transmit on when the PTT is pressed
while scanning.
Scanning in Open Scan Mode
If a busy channel is found, the scan will pause on the channel
to allow you to hear the signal and will resume scanning once
the channel has been clear for 5 seconds. While the scan is
paused, the icon will continue to animate on the display
to indicate that the scan function is still active.
To talk on your working channel while the radio is scanning,
simply press the PTT. Scanning will pause and your radio will
switch to your working channel allowing you to transmit and
receive on that channel. When your conversation has finished
and the channel has been clear for 5 seconds, scanning will
resume.
If the scan pauses on any busy channel and you wish to talk on
that channel, simply wait for a break in the conversation and
press the PTT. The busy channel now becomes your working
channel, replacing your previous working channel. Once your
conversation has finished and the channel has been clear for
5 seconds, scanning will resume.
If you need to use your Priority Channel while your radio is
scanning (perhaps for an urgent call or an emergency), briefly
press the
MENU
F
key followed by the LVL
PRI key. The radio will
jump straight to the Priority Channel and the Scan mode will
be cancelled.
If you wish to remain on a busy channel, briefly press the
SCAN
OS/GS
key while the scan is paused on that channel. The radio will
exit Scan mode and remain on the busy channel.
GROUP SCAN MODE
Before scanning, store your preferred Priority Channel.
Scanning in the Group Scan Mode
When scanning, the radio scans all the channels programmed
into the Group Scan memory, with the Priority Channel being
scanned after every fourth channel.
If a signal appears on the Priority Channel – at any time –
the receiver will switch straight to it and will stay there for
as long as the Priority Channel is busy. During this time you
can transmit on the Priority Channel in the usual way. Once
there has been no activity 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 time the receiver will continue to check the Priority
Channel for signals every 2 seconds, resulting in a series of
small ‘breaks’ in the reception of the paused channel. Once
there has been no activity on any channel for 5 seconds, the
radio will resume scanning.
If your radio is paused on a busy channel and you wish to
remain there, briefly press the
SCAN
OS/GS
key. The radio will exit the
Scan mode and remain on the busy channel.
NOTE: 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
OS/GS
key again.
To transmit on the Priority (working) Channel AT ANY TIME
while scanning, simply press the PTT key. The radio will switch
straight to the Priority Channel. When you have finished your
conversation and there has been no further activity on the
Priority Channel for 5 seconds, the radio will resume scanning
the other channels.
To go directly to the Priority Channel, briefly press the LVL
PRI
key. The radio will exit Scan mode.

TX3345 INSTRUCTION MANUAL PAGE 13
nuisAnCe ChAnnel sKiP
If while scanning, a busy channel becomes a nuisance by
constantly causing the scan to pause, you can skip over it by
pressing the SKIP button (or the or keys) while the
radio is paused on that channel. This will temporarily remove
the busy channel from the scan for 30 seconds to allow it time
to become clear. The radio will then resume scanning from the
next channel in the sequence. After 30 seconds the skipped
channel becomes active in the scan again. You can use this
method to temporarily remove multiple busy channels from the
scan if required.
If the unwanted busy channel continues to delay the scan after
the 30 second skip period has elapsed, you can completely
remove that channel from the scan group for the duration of
the current scan session by holding the
SCAN
OS/GS
key while the
radio is paused on that channel. The ‘nuisance’ channel will
be removed from the scan group for the duration of that scan
session. To restore the channel, simply stop and restart the
scan session using the
SCAN
OS/GS
key. You can use this method to
remove multiple busy channels from the current scan session
if required.
NOTE: In Group Scan mode you can also treat the Priority
Channel as a nuisance channel and remove it from the scan
session, but if you do, you will no longer be monitoring the
Priority Channel while scanning. However if you press the PTT
you will still be taken straight to the Priority Channel when
required to converse on that channel. After your conversation
has finished the scan will continue without the Priority Channel
included.
quiCK ChAnnel seleCt
To quickly review or edit channels stored in the current scan
memory, briefly press the
MENU
F
key then press the or
keys to manually step through the stored scan channels.
Only those channels that have been stored in the current
scan group memory will be displayed. During this time ‘F’ will
remain on the display to confirm you are still in ‘Quick Select’
mode. To exit this mode, press the
MENU
F
key again or wait 10
seconds for the function to time out
using two grouP sCAn or two oPen sCAn
MoDes
If you prefer, the TX3345 can be re-programmed to have two
Group Scan modes or two Open Scan modes instead of one
of each.
Your TX3345 can be retailer programmed to convert the Group
Scan mode into a second Open Scan mode and vice versa. If
you would prefer to have two Group Scan or two Open Scan
modes, you should contact your GME retailer to arrange for
this feature to be enabled (when using two Group Scan modes
the Priority Channel will be the same channel for both
scan groups).
When the second Open or Group Scan mode is enabled, the
resulting two Scan modes become Scan 1 and Scan 2.
To select the required scan mode
Press the
MENU
F
key followed by the
SCAN
OS/GS
key. ‘Scan 1’ or
‘Scan 2’ will be displayed to confirm your selection. When
enabled, the two scan modes will be identical in operation.
NOTE: Enabling or disabling the second Open or Group Scan
mode is not a user selectable option. Once enabled by your
GME retailer, the changed Scan mode becomes a permanent
part of the TX3345’s features and replaces the standard Scan
selection. If you find later that you need the original Group or
Open Scan function re-enabled, you will need to return your
TX3345 to your retailer for re-programming.
SELECTIVE CALLING
Your TX3345 has a Selective Calling system known as Selcall
that operates like a telephone. Your radio is pre-programmed
with its unique Selcall Identification Number. If this number is
called by another radio, your TX3345 will beep to alert you. If
you do not want to hear any other activity while waiting on a
channel, you can select the Quiet mode. Your radio will then

PAGE 14 INSTRUCTION MANUAL TX3345
remain quiet to all incoming signals until your Selcall number
is called.
Your TX3345 will allow you to store up to ten (10) most
frequently called Selcall numbers, with each number being
labelled for easy identification.
selCAll iDentiFiCAtion nuMber (iDent)
Your radio is factory programmed with its own unique Selcall
Identification Number (Ident). This number identifies your radio
from others. Your radio’s own Selcall Ident will be displayed
for a few seconds in the lower left of the channel display when
you first turn your radio on. You will need to make this Ident
known to others who may need to call you using Selcall.
NOTE: Although your radio is factory-programmed with a
unique Selcall Ident, you can change your Ident to another
number if required (see Selcall Memories on next page).
selCAll iDent lAbels
When storing Selcall Idents, you can add labels to each one
to make it easier to identify whose Ident you are recalling. In
addition, if an incoming Selcall matches one of your stored
Idents, the label can be displayed instead of the Ident. To add
or display labels, your radio must be in the ALPHA mode. To
switch between ALPHA mode and Numeric Mode, briefly press
the
MENU
F
key followed by the
SQL
ALPHA
key. ‘ALPHA’ or ‘NUMER’
will be displayed briefly to the lower left of the channel display
to indicate the selected mode.
the quiet MoDe
Your radio can be set to monitor signals on a busy channel but
remain quiet unless it receives its own Selcall Ident. In this way,
you won’t be disturbed unless someone calls you. When your
Selcall Ident is received, the Quiet mode is deactivated and an
alarm sounds to alert you to the call. You can then converse
normally on the channel. To use the Quiet mode, refer to the
Quiet mode section further below. Note that activating the
Quiet mode is not mandatory for Selcall operation. You can
still use Selcall on any channel whether the Quiet mode is set
or not.
TIP: The Quiet mode overrides the normal Squelch system to
ensure that the radio remains quiet even when the channel is
busy. When Quiet mode is set, you may see the icon appear
on the display indicating the channel is being used, however,
nothing will be heard in the speaker unless someone transmits
your Selcall Ident. Quiet mode can be applied to individual
channels so that some channels remain quiet while others are
open to all incoming signals.
USING SELCALL
NOTE: The ACMA requires that cumulative Selcall
transmissions should not exceed 3 seconds in any 60 second
period. To meet this requirement with your TX3345 you should
not send any more that 3 Selcall transmissions per minute.
entering A selCAll iDent
1. Press the CALL button. is displayed, along with the last
sent or received Selcall Ident. If an ALPHA label is displayed
you will need to press
MENU
F
then
SQL
ALPHA
to switch to Numeric
Mode.
2. Press and hold the LVL
PRI key until the radio beeps. The right-
hand digit of the Selcall Ident will flash.
3. Press the or keys to select the required number
in the flashing digit position.
4. Briefly press the LVL
PRI key again to select the next digit
position.
5. Repeat steps 4 and 5 to enter all 5 digits as required. The
Selcall number is now ready to send.
6. Press and hold the CALL button. A long beep will be heard
and the radio will transmit the Selcall Ident.

TX3345 INSTRUCTION MANUAL PAGE 15
NOTE: If the call is not sent within 10 seconds of entering the
last Ident digit the Call function will time-out and the radio will
return to normal mode. To exit the mode without sending the
Selcall briefly press the CALL button.
CAll ACKnowleDge
If your Selcall transmission is successful, the radio you called
should respond with an ‘acknowledge’ signal – usually two
quick beeps. This will confirm to you that the radio you called
is now alerting its user to your signal.
selCAll MeMories
Your radio is fitted with a ‘Call’ memory, an ‘ID’ memory and
10 user programmable storage memories as follows:
1. ‘Call’ memory – always holds your last-sent Selcall Ident
making it easy to resend it.
2. ‘Id’ memory – holds your radio’s own Selcall Ident. You
should only select this memory location if you need to
change your radio’s factory programmed Selcall Ident.
3. User programmable storage memories – can be used
to store and recall frequently called Selcall Idents. Memories
are labelled ‘C0’ to ‘C9’.
To store a Selcall Ident in memory
1. Briefly press the CALL button. is displayed along with
the last sent or received Selcall Ident.
2. Press the or keys to select the required memory
location ‘C0’ to ‘C9’ (to change your radio’s own Selcall
Ident, select ‘Id’). If an ALPHA label is displayed you will
need to press
MENU
F
then
SQL
ALPHA
to switch to Numeric Mode.
3. Press and hold the LVL
PRI key until the radio beeps. The
right-hand digit of the Selcall Ident will flash.
4. Press the or keys to select the required number
in the flashing digit position.
5. Briefly press the LVL
PRI key again to select the next digit
position.
6. Repeat steps 4 and 5 to enter all 5 digits as required.
7. Now press and hold the LVL
PRI key. The entire Ident will
flash for a few seconds then the radio will beep as the new
Ident is stored.
Recalling Selcall Idents from memory
1. Briefly press the CALL button. is displayed along with
the last sent or received Selcall Ident.
2. Press the or keys to select the required Ident
memory in locations ‘C0’ to ‘C9’.
3. Press and hold the CALL button to send the Ident.
Changing your radio’s own Selcall Ident
1. Ensure your radio is in Numeric Mode (press
MENU
F
then
SQL
ALPHA
as required until ‘NUMER’ is displayed).
2. Briefly press the CALL button. is displayed along with
the last sent or received Selcall Ident.
3. Press the key. ‘Id’ will be displayed along with your
radios own Selcall Ident.
4. Press and hold the LVL
PRI key until the radio beeps. The
right-hand digit of the Selcall Ident will flash.
5. Press the or keys to select the required number
in the flashing digit position.
6. Briefly press the LVL
PRI key again to select the next digit
position.
7. Repeat steps 5 and 6 to enter all 5 digits as required.
8. Now press and hold the LVL
PRI key. The entire Ident will
flash for a few seconds then the radio will beep as the new
Ident is stored.
lAbelling your selCAll iDents
You can label each Selcall Ident using a 5 character name to
make it easier to identify callers. If an incoming Selcall matches
one of those in your radio’s memory, the label can be displayed
instead of the Selcall Ident.

PAGE 16 INSTRUCTION MANUAL TX3345
To select the ALPHA display mode
Briefly press the
MENU
F
key followed by the
SQL
ALPHA
key. ‘ALPHA’
or ‘NUMER’ will be displayed for 2 seconds on the lower left of
the display to indicate the selected mode.
TIP: The normal channel display may give no indication of which
display mode is selected. The selected more will only become
obvious when displaying Selcall Idents.
Entering and storing a Selcall Label
NOTE: You must first store the required Ident in memory (as
described above) before you can add an ALPHA label to it.
1. Briefly press the CALL button. will be displayed along
with the last sent or received Selcall Ident.
2. Press the or keys to select the required Ident
memory in locations ‘C0’ to ‘C9’.
3. Briefly press
MENU
F
then
SQL
ALPHA
to select the ALPHA mode.
ALPHA will be displayed briefly.
4. If the selected memory’s ALPHA label is empty, ‘- - - - -’ will
be displayed, otherwise it will display the last ALPHA label
that was programmed into that memory.
5. Press and hold the LV L
PRI key until the radio beeps. The
left-hand position of the Alpha label will flash.
6. Press the or keys to select the required character
in the flashing position then briefly press the LV L
PRI key
again to select the next position.
The following characters are available:
A B C D E F G H I J K
L M N O P Q R S T U V
W X Y Z
0 1 2 3 4 5 6 7 8 9
SPACE * -
7. Repeat step 6 to enter up to 5 characters as required.
8. Now press and hold the LV L
PRI key. The entire Alpha label
will flash for a few seconds then the radio will beep as the
label is stored.
Repeat the steps above to add ALPHA labels to other Selcall
Idents currently stored in memory.
To exit the mode, briefly press the CALL button (or simply
wait 10 seconds and the Call function will time out). The radio
will return to normal operation.
To display the Alpha labels of incoming Selcalls, the radio
should be left in Alpha mode. Any incoming Selcall that does
not match those in the memory will display -NEW-. To display
the Selcall Ident of that caller, briefly press
MENU
F
then
SQL
ALPHA
to
return to the Numeric Mode.
reCeiVing selCAlls
When your radio receives its Selcall Ident, an alarm will sound
to alert you to the call and the symbol will be displayed
along with the Selcall Ident or ALPHA label of the caller.
Initially the alarm will beep urgently at 2 beeps per second,
then, if the call is not answered, it will slow to around 1 beep
every 3 seconds. It will then continue to beep indefinitely until
you cancel it.
To return the call
Press and hold the CALL button for a few seconds until the
radio beeps. The callers Selcall will be sent back to the caller.
To cancel the alarm
Briefly press the PTT switch. The alarm will be cancelled and
the channel will be open for normal communication. You can
now talk on the channel in the usual way.
quiet MoDe
The Quiet Mode mutes the receiver to prevent incoming
signals from being heard in the speaker until your Selcall Ident
is received. This allows you to monitor a busy channel for
personal calls without being disturbed by unwanted signals.
Once your Selcall Ident is received, the Quiet Mode is cancelled
and all incoming signals are heard in the speaker.

TX3345 INSTRUCTION MANUAL PAGE 17
Setting up QUIET mode
To setup the Quiet mode you must first ‘tag’ the channels that
you want to stay Quiet, then activate the Quiet Mode. Once the
Quiet mode is activated, the tagged channels will remain quiet
to all incoming signals unless your Selcall Ident is received.
Channels that are not tagged will remain open to all signals
and will operate normally.
To tag individual channels for QUIET operation
1. Select the required channel.
2. Press and hold the
QUIET
DUP
key until the radio beeps. ‘Q’ will
appear to the left of the channel number indicating the
selected channel is now tagged for Quiet operation.
To remove the QUIET tag from individual channels:
1. Select a channel that has been tagged for Quiet operation.
‘Q’ will be displayed.
2. Press and hold the
QUIET
DUP
key until the radio beeps. ‘Q’ will
disappear indicating this channel is no longer tagged for
Quiet operation.
Activating QUIET mode
1. Select a channel that has been tagged for Quiet operation
(you cannot activate the Quiet mode unless a ‘tagged’
channel is selected). ‘Q’ will be displayed on that channel.
2. Briefly press the
QUIET
DUP
key. will appear on the display.
The Quiet mode is now activated and all channels that were
tagged for Quiet operation will now be operating in the Quiet
mode.
Deactivating QUIET mode
1. Select any channel that has been tagged for Quiet operation.
‘Q’ and will be displayed on that channel.
2. Briefly press the
QUIET
DUP
key. will disappear from the
display and all channels that were tagged for Quiet operation
will now operate normally again.
Receiving signals in QUIET mode
• If a normal signal is received on an Open channel (one that is
not tagged with ‘Q’) the signal will be heard in the usual way.
•If a normal signal is received on a Quiet channel, the
icon will be visible showing that the channel is busy, but no
sound will be heard from the speaker.
• If your Selcall Ident is received on any channel – Open or
Quiet – the Quiet mode will be cancelled and the alarm will
beep to alert you to the call. In addition, the caller’s Ident or
ALPHA label will be displayed. All channels will now be open
for normal transmission and reception.
If you wish to respond to the caller using Selcall, press and
hold the CALL button until the radio beeps. The caller’s Ident
will be transmitted back to them causing the alarm in their
radio to be activated.
To cancel the alarm on your radio, briefly press the PTT.
To return your radio to the Quiet mode, briefly press the
QUIET
DUP
key. will re-appear on the display.
sCAnning in quiet MoDe
The radio will allow you to scan while the Quiet mode is active.
Using this feature you can monitor a group of Quiet channels
or a combination of Quiet and Open channels.
To scan in the QUIET mode
1. Briefly press
MENU
F
then
SCAN
OS/GS
to select the required scan
group (Open or Group scan).
2. Store the required channels in the selected scan memory as
described under the Scanning section.
3. From those channels, select the ones you wish to remain
Quiet and tag each one for Quiet operation (press and hold
the
QUIET
DUP
key).
4. Select a tagged channel and activate the Quiet mode (briefly
press the
QUIET
DUP
key).
5. To start scanning press the
SCAN
OS/GS
key. The radio will begin
scanning and the and flashing icons will be displayed
indicating that the radio is scanning in the Quiet mode.

PAGE 18 INSTRUCTION MANUAL TX3345
Receiving signals while scanning in QUIET mode
•If a normal signal is received on an open channel, scanning
will pause while the channel is busy and will resume
scanning 5 seconds after the channel becomes clear. (If you
were scanning in Group Scan mode, the radio may switch
between the open channel and the Priority channel – this is
normal).
•If a normal signal is received on a Quiet channel but your
Selcall Ident is not detected, the signal will be ignored and
scanning will continue.
•If a signal containing your Selcall Ident is received on any
channel – Open or Quiet – both scanning and Quiet modes
will be cancelled and the receiver will stay on that channel. In
addition, the alarm will beep to alert you to the call and the
callers Ident or ALPHA label will be displayed. The channel
will now be open for normal transmission and reception.
TIP: To ensure reliable Selcall detection when scanning in the
Quiet mode, it is recommended that you restrict the number of
channels in the Scan group to 4 or less.
GROUP CALLING
The Selcall system includes a Group Call function which allows
you to call up to 1000 radios simultaneously. This could be
useful in an emergency situation where you may need to
transmit a message to a large number of radios in your group.
By default your radio is factory set to allow up to 10 radios
to be called at once. If required you can arrange for your dealer
to re-program this option to allow 100 or 1000 radios to be
called. The following description assumes the default Group
Call setting of 10 radios.
The Group Call function works by allowing you to enter a
special ‘group code’ into the last digit positions of the Selcall
Ident you are sending. The ‘group code’ appears as an ‘A’
when displayed in the radio. When this ‘group code’ is
received, it substitutes for all other numbers in that position.
As long as the first 4 digits of the Selcall you are sending match
those of the radios you are calling, their Selcall alarm is activated
as if their full 5 digit Selcall Idents had been received.
To achieve this, the 10 radios you are calling must be
programmed with sequentially numbered Selcall Idents.
e.g. 14530, 14531, 14532, 14533.. -->, 14539
Transmitting the Selcall Ident 14531 will only activate the
alarm in the radio with the Selcall Ident of 14531. However
transmitting 1453A will activate the alarms in all radios with
Idents 14530 through 14539 (a total of 10 radios).
If the radios in your fleet do not have sequentially numbered
Selcall Idents and you want to make use of this function, you
will need to re-program the Selcall Idents in your radios.
Sending a Group Call Ident
1. Press the CALL button. is displayed along with the last
sent or received Selcall Ident. If an ALPHA label is displayed
you will need to press
MENU
F
then
SQL
ALPHA
to switch to
Numeric Mode.
2. Press and hold the LV L
PRI key until the radio beeps. The
right-hand digit of the Selcall Ident will flash.
3. Press the or keys to select ‘A’ in the flashing digit
position. This is the special code that will create the Group Call.
4. Briefly press the LVL
PRI key again to select the next digit position.
5. Continue entering the other 4 digits as required. The Selcall
number is now ready to send.
6. Press and hold the CALL button. A long beep will be heard
and the radio will transmit the Selcall Ident.
Programming group calls for 100 radios (when this is enabled
in your radio) is identical except that you will need to select ‘A’
for the last 2 digits (e.g. 123AA). For 1000 radios you will need
to select ‘A’ for last 3 digits (e.g. 12AAA).
Eg.
Sending Ident 145AA will call 100 radios with Idents 14500 -> 14599
Sending Ident 14AAA will call 1000 radios with Idents 14000 -> 14999
You can also arrange to send Selcalls to every tenth radio by
setting the second digit to A.

TX3345 INSTRUCTION MANUAL PAGE 19
e.g. Sending Ident 145A5 will call radios 14505, 14515,
14525, 14535.. --> 14595
Call acknowledge in Group mode
There is no call acknowledge when sending group calls. This is
to prevent all the radios in your group from trying to respond
to your Selcall transmission at the same time.
Storing Group Call Idents
Group Call Idents can be stored in memory in the same way as
a standard Selcall Ident.
Receiving Group Calls
Receiving a Group Call is identical to receiving a normal Selcall
except that the alarm sound is a LOW tone beep instead of the
normal HIGH tone beep. The Callers’ Ident or ALPHA Name
appears on the display in the usual way.
INSTALLATION
The TX3345 main unit is supplied with a slim, U-shaped
mounting cradle. The cradle can be screwed or bolted in any
convenient location in your vehicle (under or above the dash,
on the centre console, etc.) using the mounting slots provided
in the cradle. The TX3345 contains a built-in speaker, and
should be installed in a convenient location in the vehicle’s
cabin as the radio’s loud speaker. Alternatively it can be
installed in a less audible location and an extension speaker
used instead.
The LCD Controller Microphone comes complete with a
mounting clip. Its small size and light weight design allows it
to be mounted in almost any convenient position accessible to
the driver.
When installing the radio, avoid mounting it close to heaters
or air conditioners. Screw the LCD Controller Microphone’s clip
to a firm surface. Fit the TX3345 into the cradle and tighten
the gimbal knobs. Place the LCD Controller Microphone in its
mounting clip. Finally, plug the LCD Controller Microphone
into the front panel of the TX3345 and the power and antenna
leads to the sockets provided on the rear of the radio.
AntennA instAllAtion
It is essential to select a good quality, high efficiency, 477 MHz
antenna. A poor quality antenna or one not designed for the
specific frequency band you are using will give very
poor performance.
GME have a wide range of suitable 477 MHz UHF CB antennas
to suit most installations and applications. We recommend
contacting your local GME retailer for advice.
Connect to the antenna cable to the rear antenna socket using
a PL259 coaxial connector.
Noise Suppression
The inherent design of FM transceivers result in a high level
of resistance to ignition and electrical interference. However
in some installations it may be necessary to take additional
steps to help reduce or eliminate noise interference. During
installation, try to route the DC battery leads, the antenna lead
or any accessory wires away from the engine compartment,
ignition or alternator wiring. If the noise continues, try fitting
a suppression kit in which case we recommend you consult an
auto electrician for advice specific to your installation.
Higher frequency electrical interference caused by electric
motors can be suppressed directly at the motor terminals.
Fitting the LCD controller microphone
Slide microphone
into the mounting clip
MC524

PAGE 20 INSTRUCTION MANUAL TX3345
Mounting the cradle
The mounting bracket can be oriented with the arms extending
either forward or backwards to adjust the position of the front
panel with reference to the mounting point
Fitting the radio
Fit radio into cradle and tighten gimbal knobs.
Once the orientation of your radio is confirmed, you can fit the
GME model label. Simply remove the backing tape and press
into the recess on the front panel.
Fitting the microphone
The microphone uses an 8 pin plug and socket.
To fit the microphone:
1. Position the microphone plug so the plastic tab faces
downwards, and press the plug into the socket until
it ‘clicks’.
2. Gently slide the rubber boat towards the hole surrounding
the socket until it is flush with the front panel.
Plastic tab
Label