GME TX3100DP User Manual
Super compact 5 watt 80 channel UHF radio
INSTRUCTION MANUAL
CONTENTS
INTRODUCTION .........................................................................3
IMPORTANT INFORMATION
TELEMETRY CHANNELS
..................................................................................5
FEATURES
GENERAL OPERATION
Unique Flip Feature.............................................................7
Power ................................................................................7
Volume ..............................................................................7
Selecting Channels .............................................................7
Transmitting .......................................................................7
Squelch Control ..................................................................8
Squelch Sensitivity ..............................................................8
Backlight ............................................................................9
Duplex Operation ...............................................................9
Dynamic Volume Control .....................................................9
Adjusting the Beep Tone Level ..........................................11
CTCSS & DCS
Selecting the CTCSS or DCS Tone ......................................12
Enabling CTSS/DCS on a Channel......................................13
Disabling CTCSS/DCS on a Channel ..................................13
Monitoring the Channel ....................................................13
SCANNING
Programming Scan Channels ............................................14
PAGE 2 INSTRUCTION MANUAL TX3100
...........................................................................11
..............................................................................14
........................................................3
..............................................................4
................................................................6
Using Scan ...............................................................................14
Skipping Over Busy Channels While Scanning
Transmitting While Scanning
INSTALLATION
Antenna Installation .........................................................16
Noise Suppression ............................................................16
DC Power Connection .......................................................19
High Voltage Detection .....................................................20
Antenna Connection .........................................................20
UHF CB OPERATING FREQUENCIES
CTCSS TONE FREQUENCY CHART
DCS TONE CHART.....................................................................23
SPECIFICATIONS
SC CONTRACT WARRANTY AGAINST DEFECTS
.........................................................................15
......................................................................24
.....................................................15
.............................................22
...........................15
..........................................21
.........................26
ACCESSORIES SUPPLIED
• Main Radio Unit
• Mounting Bracket
• Instruction Manual
• Microphone
• Microphone Clip
• Screw Pack
• Supplementary GME
model label
If any items are missing or
damaged, please contact your
retailer or place of purchase
• DC Lead
.
INTRODUCTION
Your GME TX3100 radio is Australian designed and built and is
the most advanced UHF Citizen Band radio available.
The TX3100 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 specications and performance.
The TX3100, with its front mounted controls, is designed for
unobtrusive mounting in modern vehicles. Its innovative features
include a built-in loud speaker housed within an extremely
compact case.
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
TX3100 INSTRUCTION MANUAL PAGE 3
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.
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.
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.
The TX3100 uses advanced DSP processing to minimise the
possibility of interference on adjacent channels and the need to
adjust your volume control to compensate for wide/narrow
ACMA regulations have allocated channels 22 and 23 for
telemetry only applications and have prohibited the transmission
of speech on these channels. Consequently the TX3100 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.
TELEMETRY CHANNELS
band reception.
Further information and updates are available from the Austral-
ian 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
PAGE 4 INSTRUCTION MANUAL TX3100
Flip Feature: Unit can be mounted with the speaker facing
FEATURES
Microprocessor Controlled Frequency Synthesiser:
•
Allows user programmable control of scanning, channel
memories and selected feature options.
Advanced Signal Management (ASM): Identies
•
interference caused by strong local signals on adjacent
channels and prevents these from opening your squelch.
ASM also minimises distortion on reception by ne tuning the
receiver frequency to match that of the incoming signal.
Dynamic Volume Control (DVC): Automatically
•
compensates for variations in received audio level resulting in
a constant audio output level to the speaker.
Programmable Scan Function: Scans the programmable
•
UHF CB channels.
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.
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.
TX3100 INSTRUCTION MANUAL PAGE 5
•
upwards or downwards and the display ‘ipped over’ using
a simple key-press sequence to allow viewing of the display
from either mounting orientation. Keys use symbols to provide
readability in all installations.
Compact Size: Fits into the smallest locations allowing
•
installations in even the most ‘space challenged’
environments.
CTCSS & DCS: A built-in Continuous Tone Coded Squelch
•
and Digital Coded Squelch System option provides quiet
channel operation.
Overvoltage Protection: Special overvoltage detection
•
circuitry protects the radio and warns of excessive voltage
conditions by ashing 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 TX3100
•
has been totally designed and manufactured in Winston
Hills NSW to meet the demanding needs of the Australian
community.
BASIC CONTROLS
GENERAL OPERATION
Microphone Socket
Power
Channel
TX3100
LCD
S
Volume
LCD
Squelch Icon
Scan Icon
Silent (CTCSS) Icon
PAGE 6 INSTRUCTION MANUAL TX3100
Scan Squelch
Transmit
S
DCS Icon
Channel Display
MICROPHONE
Push-To-Talk (PTT)
POWER
To turn the TX3100 ON, briey press the
key.
To turn the TX3100 OFF, press and hold the key.
VOLUME
Press the
or keys to increase or decrease the volume. The
radio will beep with each key press and the display will ash
to indicate the volume setting is being displayed. The volume
level can be set from 00 (min) to 31 (max). The display will stop
ashing and will return to displaying the selected channel a few
seconds after the last volume adjustment.
NOTE:
At the minimum volume setting there is still sufcient
volume to be heard in a quiet cabin environment.
SELECTING CHANNELS
or keys to step upwards or step downwards
UNIQUE FLIP FEATURE
The TX3100 has a unique Display Flip function that allows the
unit to be installed upside down, if required, and the display read
from either orientation.
For more information on this feature please refer to Flipping the
Display under Installation on page 18.
Press the
through the channels.
TRANSMITTING
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 nished talking.
IMPORTANT: Always listen to ensure the channel is free
before transmitting.
TX3100 INSTRUCTION MANUAL PAGE 7
SQUELCH CONTROL
Squelch control is used to eliminate the background noise when
there are no signals present. The TX3100 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
Briey press the
key. A low beep will be heard. If there are
SQUELCH SENSITIVITY
The sensitivity of the Squelch to incoming signals can be set to
suit your operating environment. For example, excessively noisy
environments may cause the squelch to open on local noise. The
TX3100 has nine (9) preset Squelch sensitivity settings.
To adjust the preset Squelch sensitivity
Press and hold the
key while immediately pressing the
or keys. The icon will ash and the preset squelch level
will be displayed as -1 to -9 . The minimum squelch level of -1
is the most sensitive and will allow the squelch to open on very
weak signals. Setting the squelch to the maximum setting of -9
will require very strong signals to open the squelch. The default
setting is -3 which generally provides reliable squelch operation
for most applications.
no signals present you will hear the receiver’s background noise.
To close the Squelch
Briey press the
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.
PAGE 8 INSTRUCTION MANUAL TX3100
key again. A high beep will be heard and
Setting the Squelch sensitivity
NOTE: After pressing the
key you should begin pressing
the or keys immediately (within 2 seconds) otherwise the
‘Silent’ mode may be activated. See ENABLING CTCSS/DCS
ON A CHANNEL on page 9.
BACKLIGHT
When the radio is on, briey press the
key to cycle through the
brightness levels for the LCD and keypad lighting. There are 5 levels
of lighting from off to full brightness. Each key press increases the
brightness until maximum brightness is reached. The next key press
resets the brightness level to off and the cycle repeats.
Off Very Low Low Medium High
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 operation 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.
DYNAMIC VOLUME CONTROL (DVC)
The modulation level of signals heard on the UHF CB band has
always varied considerably resulting in noticeable differences in
received audio volume between stations. Generally users have
compensated for this by adjusting the volume control for each
received signal. With the introduction of 80 channel narrowband
transmissions that use lower levels of modulation, the diversity in
received audio volume is likely to increase further.
The TX3100 is able to automatically compensate for these
variations in received audio level by utilising a Dynamic Volume
Simplex/Duplex Range Comparison
Simplex
Repeater
operation
Channel 31
Channel 1
Vehicle
Repeater
Station
Channel 1
Channel 31
Vehicle
Control. This feature automatically compensates for variations in
received audio level resulting in a constant audio output level to
the speaker to greatly enhance the quality of the reception.
TX3100 INSTRUCTION MANUAL PAGE 9
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