GME TX3350 User manual

INSTRUCTION MANUAL
Super compact 5 watt UHF CB radio
with ergonomic speaker control microphone

ACCESSORIES SUPPLIED..................................................... 3
INTRODUCTION ................................................................. 3
IMPORTANT INFORMATION................................................ 3
Possible issues............................................................ 3
Emergency channels ................................................... 3
FEATURES.......................................................................... 4
Telementry channels ................................................... 5
GENERAL OPERATION........................................................ 5
MC634B Controller Microphone ................................. 5
Display....................................................................... 5
Function Keys ............................................................. 6
Volume Key ................................................................ 6
Selecting Channels ..................................................... 6
Transmitting ............................................................... 6
Squelch ...................................................................... 6
Squelch Sensitivity ...................................................... 6
Duplex Operation ....................................................... 7
Menu ........................................................................ 8
Backlighting ............................................................... 8
Signal Meter/Battery Meter......................................... 8
Key Beeps................................................................... 9
Dynamic Volume Control (DVC)................................... 9
Disabling the Internal Speaker..................................... 9
Microphone Sensitivity................................................ 9
Priority Channel........................................................ 10
CTCSS & DCS................................................................... 10
Choosing the CTCSS or DCS...................................... 10
CTCSS Tone Set Compatibility ................................... 10
MONITORING THE CHANNEL............................................ 11
SCANNING ...................................................................... 11
Scan Groups............................................................. 11
Selecting a Scan Group............................................. 12
Programming Scan Channels .................................... 12
OPEN SCAN MODE ......................................................... 12
GROUP SCAN MODE....................................................... 13
Auto Skip ................................................................. 13
Quick Channel Select................................................ 14
Using two Group Scan or two Open Scan Modes....... 14
SELECTIVE CALLING......................................................... 14
SelCall Indentification Number (IDENT) ..................... 14
SelCall Ident Labels .................................................. 14
The Quiet Mode........................................................ 15
USING SELCALL ............................................................... 15
Entering a SelCall Ident............................................. 15
Call Acknowledge..................................................... 15
SelCall Memories...................................................... 15
Labelling your SelCall Idents ..................................... 16
Receiving SelCalls..................................................... 17
Quiet Mode.............................................................. 17
GROUP CALLING.............................................................. 18
INSTALLATION ................................................................. 20
Antenna Installation ................................................. 20
DC Power Connection............................................... 22
High Voltage Warning ............................................... 22
Antenna Connection................................................. 23
CTCSS TONE FREQUENCY CHART..................................... 23
DCS TONE CHART............................................................. 24
UHF CB OPERATING FREQUENCIES .................................. 25
SPECIFICATIONS .............................................................. 26
SC CONTRACT WARRANTY AGAINST DEFECTS................. 27
CONTENTS
PAGE 2 INSTRUCTION MANUAL TX3350

INTRODUCTION
Your GME TX3350 80 channel radio is Australian designed
and built and is the most advanced UHF Citizen Band radio
available. It 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 SoundPath™ speaker control mic brings you clear sound
and total control from the palm of your hand, allowing your
radio to be mounted almost anywhere in your vehicle.
IMPORTANT INFORMATION
CONCERNING 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.
There can be interference from a nearby 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
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.
TX3350 INSTRUCTION MANUAL PAGE 3
ACCESSORIES SUPPLIED
• TX3350 5 watt
UHF CB Radio
• Mounting Cradle
• Instruction Manual
• MC634B LCD Speaker
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 TX3350
FEATURES
TRANSMIT (TX)
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.
SIGNAL PROCESSING
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.
Dynamic Volume Control (DVC): Automatically compensates for variations in received audio level resulting in a
constant audio output level to the speaker.
SCANNING AND MEMORY FUNCTIONS
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.
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.
PRIVACY FUNCTIONS
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.
PHYSICAL PROPERTIES
Overvoltage Protection: Special overvoltage detection circuitry protects the radio and warns of excessive voltage
conditions by flashing the display.
Rugged Construction: With die-cast chassis.
USER CONTROLS AND INTERFACE
Full Spectrum Backlighting: User adjustable, totally customisable backlight settings to match the vehicle’s
dashboard lighting or driver’s preference.
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 in all environments.
Full Function LCD Controller Microphone: with rear mounted speaker using ‘Sound Path’™ technology to
channel clear audio towards the user.

GENERAL OPERATION
MC634B MICROPHONE/CONTROLLER
LEVEL
Channel Up
Push-To-Talk (PTT) Skip/Call
Channel Down
Menu/
Function 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
TX3350 INSTRUCTION MANUAL PAGE 5
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
TX3350 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.

FUNCTION KEYS
There are several keys beneath the microphone controller’s
display that have dual functions. Their primary functions are
printed on a black background and their secondary functions
are printed on a white background.
To access the primary (black) functions
Press the key with the required primary function label. e.g. To
control the Squelch, briefly press the key.
To access the secondary (white) functions
Press the Function key followed immediately by the key
with the required secondary function label.
NOTE: If the secondary key is not pressed within 10 seconds
the 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.
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
3 – 5 cm from your mouth 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 TX3350 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
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 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 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 TX3350 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
PAGE 6 INSTRUCTION MANUAL TX3350

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 LEVEL 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 LEVEL
key to return to normal operation.
NOTE: The Squelch level can also be adjusted within the
Menu.
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 TX3350 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 key then press the 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 key then press the key.
will disappear from the display accompanied by
a low beep.
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
TX3350 INSTRUCTION MANUAL PAGE 7
Vehicle
Simplex/Duplex Range Comparison
Simplex
Repeater
operation
Channel 31
Channel 1
Repeater
Station
Channel 1
Channel 31
Vehicle

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
SPK Disable the Speaker in
the Radio
SPKON / SPKOF
MIC Adjust the Microphone
Sensitivity
MIC+0 > MIC+9
To use the Menu
Press and hold the key until the radio beeps. ‘SQL’ will
be displayed indicating the first Menu item (Squelch setting
mode) is selected.
Briefly press the key to cycle through the Menu items.
Press the or keys to adjust the selected
Menu item.
When finished, press and hold the 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 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. To exit, press and hold the key or wait for the
Menu to time out.
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 key for several seconds. The
radio will enter Menu mode and ‘SQL’ will be displayed.
2. Press the key repeatedly until ‘LIGHT’ is displayed.
3. Press the or keys to adjust the backlight
brightness.
4. Press the 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 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 key or wait for the
Menu to time out.
TIP: For the deepest colour range, reduce the WHITE setting.
SIGNAL METER/BATTERY METER
The TX3350 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+
PAGE 8 INSTRUCTION MANUAL TX3350

The TX3350 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 key for several seconds. The
radio will enter Menu mode.
2. Press the 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 key or wait for the Menu
to time out.
KEY BEEPS
The key beeps act as confirmation of your key presses.
To adjust the volume level of the beeps:
1. Press and hold the key for several seconds. The
radio will enter Menu mode.
2. Press the key repeatedly until ‘BEEPx’ is displayed
(where x is a value from 0-9).
3. Press the or keys to adjust the beep volume
from 0 (silent) to 9 (loud).
4. To exit, press and hold the key or wait for the
Menu to time out.
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 TX3350’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 key to enter the Menu.
2. Press the 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 key or wait for
the Menu to time out.
DISABLING THE INTERNAL SPEAKER
The TX3350 has two speakers – one mounted inside the radio
and the other mounted inside the microphone.
By default, sound is reproduced by both speakers; however
if you prefer, the radio’s internal speaker can be switched off
leaving just the speaker/microphone to reproduce sound.
To switch off the radio’s internal speaker
1. Press and hold the key.
2. Press repeatedly until ‘SPKxx’ is displayed
(where xx = ON or OF).
3. Press or to make the desired selection.
4. Select ‘SPKON’ to switch the radio’s internal speaker ON.
5. Select ‘SPKOF’ to switch the radio’s internal speaker OFF
6. When finished, press and hold the key or wait for
the Menu to time out.
MICROPHONE SENSITIVITY
The sensitivity of the microphone can be adjusted to your
voice input level. If you are quietly spoken or are operating
in a quiet environment you can increase the microphone
sensitivity to make your voice sound clearer. If your voice is
quite loud or you are working in a noisy environment and
wish to minimise the amount of background noise that is
picked up, you can reduce the microphone sensitivity.
To adjust the microphone sensitivity
1. Press and hold the key.
2. Press repeatedly until ‘MICxx’ is displayed (where xx
= +0 to +9).
3. Press or to make the desired selection. Press
to increase the microphone sensitivity or press
to decrease the microphone sensitivity.
TX3350 INSTRUCTION MANUAL PAGE 9

4. When finished, press and hold the 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 key then press and hold the LEVEL
key. The selected channel will flash followed by a high
beep as the channel is stored.
To recall a Priority Channel
Briefly press the key then briefly press the LEVEL key.
The radio will switch straight to the selected Priority Channel.
Any active functions (such as Scanning or Quiet) will be
cancelled.
CTCSS & DCS
The standard Squelch system is fine for quieting the radio
in most applications. However, it operates solely on signal
strength which means that it will always open to any signal
that is strong enough. If the channel is busy with other
stations the Squelch will be constantly opening making it
difficult to determine which calls are meant for you.
CTCSS (Continuous Tone Coded Squelch System) and DCS
(Digital Coded Squelch) are similar Squelch quieting systems
that provide selective audio muting using sub-audible
signalling. When enabled, only signals with a matching sub-
tone will be heard in the speaker. This effectively creates a
channel that is silent to all traffic except those you wish
to hear.
CHOOSING CTCSS OR DCS
The CTCSS system uses 1 of 50 low frequency tones to open
and close the Squelch on the radio. The DCS system is similar
to CTCSS but uses 1 of 104 digital codes to control the
Squelch. There is no difference in performance or function
between the different tone sets so choosing which tone
system to use will largely depend on the other radios you talk
with. If others already use CTCSS or DCS, you should select
the tone system that matches theirs. If the users you talk to
don’t currently use CTCSS or DCS then you can make your
own choice. Both types are included in the radio to maintain
compatibility with other radio systems.
CTCSS TONE SET COMPATIBILITY
The GME CTCSS tone set comprises a table of 50 tones made
up of the standard CCIR-38 Tone Set plus an additional 12
tones added to the end. If communicating with other brands
of radios that only use the CCIR-38 tone set, please select
from one of the first 38 tones to ensure compatibility with
these radios.
If communicating with other GME radios, you may choose
from any of the 50 tones. However, please refer to the
tone set tables listed in each radio’s Instruction manual
for compatibility because, although the same 50 tones are
available in all GME radios, the tones used in older GME
models may be listed in a different order to those in
your radio.
To select a CTCSS or DCS code
1. Press and hold the key until the radio beeps.
2. Briefly press the key repeatedly until ‘CTCxx’ or
‘DTxxx’ is displayed.
3. Press the or to enable CTCSS/DCS and select a
suitable CTCSS or DCS code.
• To select a CTCSS tone, select from ‘CTC01’ to ‘CTC50’
(CTCSS tones 01 to 50).
• To select a DCS code, scroll past CTC50 to select from
‘DT001’ to ‘DT104’ (DCS codes 001 to 104).
• To switch CTCSS/DCS off, select ‘CTCOF’.
Press
CTCSS Off CTCSS Tone 50 DCS Tone 104
Press
PAGE 10 INSTRUCTION MANUAL TX3350

3. To see the actual sub tone instead of the tone label, briefly
press the LEVEL key. For CTCSS tones the tone frequency
will be displayed in Hz. For DCS codes the code will be
displayed. Press the LEVEL key again to return to the
CTCSS/DCS label (refer to the CTCSS and DCS tone charts
later in this manual).
CTCSS
Label
CTCSS Sub Tone
Frequencey
To store the setting press and hold the key until the
radio beeps or wait for it to time out.
NOTE: The tone you select will be used for all channels that
have ‘Silent’ enabled.
Enabling CTCSS/DCS on a channel (Silent mode)
Enabling CTCSS/DCS on a channel will prevent the Squelch
from opening on that channel unless the incoming signal
matches your selected CTCSS/DCS tone. Other users on the
same channel who are not using your CTCSS/DCS tone will
still be received by your radio (the icon will still appear on
the display) – but their voice will not be heard in the speaker.
Only when someone transmits on the channel using your
CTCSS/DCS tone will the Squelch open to allow the signal to
be heard. Channels where CTCSS/DCS have been enabled are
said to be in ‘Silent mode’.
NOTE: Silent mode can be enabled on any channel except
emergency channels 5 and 35.
To enable Silent Mode on a channel
1. Select the required channel.
2. Press and hold the key until a high beep is heard.
3. An icon (CTCSS) or icon (DCS) will be appear to
indicate Silent mode is now enabled on that channel.
NOTE: You cannot enable Silent mode unless a CTCSS or DCS
tone has been selected in the Configuration Menu. If CTCSS/
DCS has been set to OFF, Silent mode is inhibited.
To disable Silent Mode on a channel
1. Select the required channel. An icon (CTCSS) or icon
(DCS) will be displayed indicating Silent mode is enabled.
2. Press and hold the key until a low beep is heard.
3. The (CTCSS) or (DCS) icon will disappear to indicate
Silent mode has been removed from that channel.
IMPORTANT: When Silent mode is enabled on a channel
you should always check the icon for signs of traffic on the
channel before transmitting to ensure you do not accidentally
transmit over the top of another user.
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 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 key. If there are no signals present, you
will hear the usual hiss of an empty channel. Press the
key again to restore the Squelch to its previous setting.
SCANNING
The TX3350 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 TX3350 features two scan groups by default – Open Scan
and Group Scan.
TX3350 INSTRUCTION MANUAL PAGE 11

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.
1 - 2 - 3 - 4 - 5 - 6 - 7 - 8
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.
1 - 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20
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 key followed by the
key. ‘Open’ or ‘Group’ will be displayed briefly to
confirm your selection.
PROGRAMMING SCAN CHANNELS
Your TX3350 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 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
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 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 key
and the command will be ignored.
To stop scanning
To cancel the scan, briefly press the key. A low beep
will be heard and the icon will disappear and stop
animating.
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.
PAGE 12 INSTRUCTION MANUAL TX3350

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 key followed by the LEVEL 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
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 scan-
ning 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 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 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
key followed by the LEVEL key. The radio will exit Scan mode.
AUTO 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 key 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
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 key. You can use this
method to remove multiple busy channels from the current
scan session if required.
TX3350 INSTRUCTION MANUAL PAGE 13

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 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 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 TX3350 can be re-programmed to have two
Group Scan modes or two Open Scan modes instead of one
of each.
Your TX3350 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 key followed by the 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 TX3350’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
TX3350 to your retailer for re-programming.
SELECTIVE CALLING
Your TX3350 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 TX3350 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
remain quiet to all incoming signals until your SelCall number
is called.
Your TX3350 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 key followed by the key. ‘ALPHA’ or
‘NUMER’ will be displayed briefly to the lower left of the
channel display to indicate the selected mode.
PAGE 14 INSTRUCTION MANUAL TX3350

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 TX3350 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 then to
switch to Numeric Mode.
2. Press and hold the LEVEL 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 LEVEL 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.
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 then to switch to Numeric
Mode.
TX3350 INSTRUCTION MANUAL PAGE 15

3. Press and hold the LEVEL 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 LEVEL 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 LEVEL 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 then
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 LEVEL 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 LEVEL 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 LEVEL 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.
To select the ALPHA display mode
Briefly press the key followed by the 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 then 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 LEVEL 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
LEVEL key again to select the next position.
7. Repeat step 6 to enter up to 5 characters as required.
8. Now press and hold the LEVEL key. The entire Alpha label
will flash for a few seconds then the radio will beep as the
label is stored.
PAGE 16 INSTRUCTION MANUAL TX3350

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 * -
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 then
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.
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 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 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 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 key. will disappear from the
display and all channels that were tagged for Quiet
operation will now operate normally again.
TX3350 INSTRUCTION MANUAL PAGE 17

PAGE 18 INSTRUCTION MANUAL TX3350
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
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 then 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 key).
4. Select a tagged channel and activate the Quiet mode
(briefly press the key).
5. To start scanning press the key. The radio will begin
scanning and the and flashing icons will be displayed
indicating that the radio is scanning in the Quiet mode.
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 then to
switch to Numeric Mode.
2. Press and hold the LEVEL 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 LEVEL 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 (eg. 123AA). For 1000 radios you will need
to select ‘A’ for last 3 digits (eg. 12AAA).
e.g.:
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.
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.
TX3350 INSTRUCTION MANUAL PAGE 19

INSTALLATION
The TX3350 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 TX3350 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 TX3350 into the
cradle and tighten the gimbal knobs. Place the LCD Control-
ler Microphone in its mounting clip. Finally, plug the LCD
Controller Microphone into the front panel of the TX3350
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
MC634B mic
PAGE 20 INSTRUCTION MANUAL TX3350