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TX3400
User Manual
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GME TX3400 User Manual

INSTRUCTION MANUAL
TX3400
UHF TRANSCEIVER
2
CONTENTS
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Operation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Selective Calling
. . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Using the Quiet Mode
. . . . . . . . . . . . . . . . . . . . . 12
Group Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Page Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
CTCSS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CTCSS Tone Frequency Chart
. . . . . . . . . . . . 17
Disabling Functions . . . . . . . . . . . . . . . . . . . . . . . 18
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Channel Frequency Chart
. . . . . . . . . . . . . . . . . 22
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Your GME Electrophone TX3400 transceiver is Australian designed and built and is the most advanced UHF Citizen Band radio available.
The TX3400 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 TX3400's small size means it can be mounted in almost any convenient location and its strong diecast aluminium chassis makes it the most robust transceiver of its kind. With just two rotary controls and four touch keys, the TX3400 is easy to operate.
FEATURES
• Microprocessor Controlled Frequency
Synthesiser: Allows user programmable
control of scanning, channel memories and selected feature options.
• Permanent Memory: Retains all user settings in non-volatile memory even when the power has been removed.
• Programmable Scan Function: Scans up to 40 user programmable channels with both Group and Open scan functions available.
• Remote or Local Installation Option: The TX3400 can be mounted either remotely using the separate control head, or locally with the control head attached to the main unit.
INTRODUCTION
The following items are included with your TX3400
If any items are missing or damaged, please contact your dealer or place of purchase.
• TX3400 Transceiver with Remote Head Unit
• Microphone
• Microphone Clip
• Instruction Manual
• Mounting Cradle for Main Unit
• Mounting Bracket for Remote Unit
• Screw Pack
• DC Lead
Microphone Socket
•
Scan
•
Selcall
Mem 1.
•
Open Scan /
Group Scan
•
Selcall Mem 2.
•
Duplex
•
Selcall
Mem 3.
•
Squelch
•
Silent
•
Pager Mem.
•
Channel Selector
•
Priority Channel
Liquid Crystal Display
•
Volume ON/OFF
•
Quiet Mode Selector
SQLOS/GS
P321
PUSH
QUIET
PUSH
PRI
CALL TOFROM
SCAN
QM
BUSY DUP T/A SILENT
QUIET
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.
• 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 four or 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, the Quiet mode prevents incoming signals from being heard on selected channels unless preceded by your Selcall code.
• Unique Page (Transpond) Mode: Allows you to transfer an incoming Selcall to another radio if your radio is unattended.
• CTCSS Ready: A built-in Continuous Tone Coded Squelch System option provides quiet channel operation (when approved by the Australian Communications Authority).
• Feature Disabling Function: Allows Scanning, Squelch, Duplex, Priority, Channel selection and CTCSS (when active) features to be enabled or disabled to make the radio simpler to operate.
• 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 TX3400 has been totally designed and manufactured in Gladesville NSW to meet the demanding needs of the Australian community.
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OPERATION
VOLUME
Rotate the volume control clockwise past the "click" to turn the TX3400 on. Adjust the volume control for a comfortable listening level.
If no sound is heard, temporarily unmute the radio by briefly pressing the SQL key. You can now adjust the volume by listening to the receiver's background noise. When finished, briefly press the SQL key again to re-mute the radio.
BACK LIGHTING
The Liquid Crystal Display and function keys are backlit for easy viewing at night or in low light situations. The back lighting is on at all times while the TX3400 is turned on.
SELECTING CHANNELS
Select the required channel by rotating the channel selector knob. Rotate the knob clockwise to select higher channels and counter-clockwise to select lower channels. The selected channel is displayed on the LCD.
SQUELCH
The squelch is used to eliminate any annoying background noise when there are no signals present. The TX3400 features a preset squelch system. The squelch level has been set to provide optimum performance.
The Squelch can be Opened or Closed with the SQL key. When the Squelch is Open, the receiver's background noise can be heard and 'BUSY' is displayed. When the Squelch is closed, the receiver remains quiet when there are no signals present but any incoming signals will override the Squelch and be heard in the speaker.
To open the Squelch, briefly press the SQL key. A low beep will be heard. If there are no signals present you will hear the receiver's background noise.
To close the Squelch, briefly press the SQL key again. A high beep will be heard and the receiver will become quiet.
NOTE: If an incoming signal is very weak and is close to the minimum squelch level, it may become broken or “chopped” by the squelch 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.
Setting the Squelch Sensitivity.
The sensitivity of the squelch to incoming signals can be set to suit your operating environment. The TX3400 has three preset squelch sensitivity settings which can be selected using a front panel key sequence.
• SQL1: Maximum Sensitivity.
The squelch will open even on very weak signals. This is the best setting for quiet country or rural locations where there are very few weak stations or little locally generated interference.
• SQL2: Medium Sensitivity.
The squelch will open on most signals, but will not be as sensitive to very weak signals or local interference. Suitable for general or suburban use.
• SQL3: Minimum Sensitivity.
The squelch will open on reasonably strong signals and weak signals will not be heard. Suitable for inner city applications or areas of severe interference.
To pre-select the squelch sensitivity.
1. Turn the TX3400 OFF at the Volume control.
2. Hold the DUP and SQL keys while turning the unit back on again.
3. Rotate the Channel switch to select SQL1, SQL2 or SQL3.
4. Turn the unit OFF again to store the setting.
DUPLEX SWITCH
Duplex operation allows the TX3400 to transmit on a different frequency to that which it receives. This allows operation through any repeater stations in your area. Repeaters
4
automatically re-transmit your signal over a wider area, providing greatly increased range.
The Duplex function operates only on channels 1 - 8. When Duplex is selected on one of these channels, the TX3400 receives on that channel but actually transmits 30 channels higher.
E.g.
The TX3400 allows you to select duplex operation on individual channels. This is particularly useful in country areas where there may only be one or two repeaters. Then unused repeater channels can be used for normal simplex or direct radio-to-radio communications.
To select Duplex on individual channels:
1. Select the required channel 1 - 8.
2. Briefly press the DUP key. ‘DUP’ will appear on the display accompanied by a high beep.
To remove Duplex from a channel:
1. Select the required channel 1 - 8. ‘DUP’ will be visible on the display.
2. Briefly press the DUP key. ‘DUP’ will disappear from the display accompanied by a low beep.
PRIORITY CHANNEL
The Priority channel feature allows you to store one of the 40 channels in the TX3400 as a priority channel that can be instantly recalled at the press of a key. This can be used to provide instant access to your working channel or your local repeater channel.
To store a Priority channel:
1. Select the required channel.
2. Press and hold the Channel Knob. The channel display will flash for a moment then a high beep will be heard as the selected channel is stored.
To recall a Priority channel:
Briefly press the Channel Knob. The TX3400 will immediately switch to the Priority channel accompanied by a high beep.
The TX3400 features two scan groups - Open Scan and Group Scan.
• Open Scan allows any of the fitted channels to be scanned for activity in an ascending sequence (i.e. from the lowest channel to the highest). Channels are scanned at a rate of 20 channels per second. 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.
• Group Scan also allows any of the fitted channels to be scanned for activity in an ascending sequence, but in addition, it also inserts your Priority channel into the scan sequence. This means that your Priority channel will be monitored regularly while scanning to ensure that no calls are missed. Any signals received on your Priority channel will have priority over any signals received on the other channels.
Example showing Group Scan channels 1 to 8 with priority channel 20.
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Channel Selected 1 2 3 4 5 6 7 8 Receive Channel 1 2 3 4 5 6 7 8 Transmit Channel 31 32 33 34 35 36 37 38
SCANNING
1 - 2 - 3 - 4 - . . . . . . . . . . - 39 - 40
1 - 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20
Selecting a Scan Group.
The current scan group is shown on the display as OS for Open Scan or GS for Group Scan.
To change the selected scan group:
• Briefly press the OS/GS key. A beep will be heard and the display will
change to reflect the scan group you have selected.
Programming Scan Channels.
Your TX3400 is supplied with all 40 UHF CB channels programmed into the Open Scan memory. Any channels not required can be removed as necessary. 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. Check that the radio is not already scanning. If it is, briefly press the SCAN key to cancel the scan function.
2. Select the required scan group by pressing the OS/GS key.
3. Select the required channel using the rotary channel selector switch.
• If ‘M’ is displayed to the upper left of the channel number, the selected channel is presently in the scan memory. It can be removed by holding the SCAN key in for a few seconds until a low beep is heard. ‘M’ will then disappear indicating the channel is no longer in memory.
• If ‘M’ is not visible to the upper left of the channel number, then the selected channel is not in the memory. To add it, hold the SCAN key in for a few seconds until a high beep is heard. ‘M’ will now appear to the upper left of the channel number.
4. Repeat step 3 to add or remove other channels in the scan memory.
To Start Scanning:
To scan in the selected scan mode, briefly press the SCAN key. A high beep will be heard, ‘SCAN’ will appear in the display and the radio will begin scanning.
NOTE: If there are less than 2 channels programmed in the scan memory in Open Scan or one channel in Group Scan when you press the SCAN key, a long low beep will be heard and the command will be ignored.
Scanning in the Open Scan Mode.
• If a busy channel is found, scanning will pause on that channel to allow the signal to be heard and will remain there for as long as the channel remains busy. Once the channel has been clear for 5 seconds, scanning will resume automatically.
• If your radio pauses on a busy channel and you don't wish to listen to that conversation, briefly press the CALL button on top of the microphone. The radio will skip over that channel and resume scanning from the next channel in the sequence.
• To talk while paused on a busy channel, simply press the Push-To-Talk (PTT) button on the microphone. The SCAN mode will be put on hold and the radio will stay on that channel. You can now converse on that channel in the usual way. When you have finished your conversation, briefly press the CALL button to resume scanning.
• If your radio is paused on a busy channel and you wish to remain there, briefly press the SCAN key. The radio will exit the Scan mode and remain on the busy channel.
• If your radio is scanning and you need to use your Priority channel (for an urgent call or an emergency), briefly press the channel knob. The Scan mode will be cancelled and the radio will jump straight to the Priority channel.
NOTE: Your TX3400 will not allow you to transmit while it is scanning channels in the Open Scan mode. If the PTT button is pressed
6
while scanning, the radio will give a low beep and will ignore the command. Your radio will only transmit in the Open Scan mode while it is paused on a busy channel.
Ending the Open Scan.
To stop scanning, briefly press the SCAN key again. A low beep will be heard and “SCAN” will disappear from the display. As long as the radio was not on a busy channel, it will return to the last channel you selected, otherwise it will stay on the busy channel.
Group Scan Mode.
With Group Scan selected, you can transmit and receive normally on your priority (working) channel, but between breaks in the conversation, the radio will scan and listen to several other channels. The receiver will continue to scan the other channels ONLY WHILE THERE ARE NO SIGNALS ON THE PRIORITY CHANNEL.
If a signal appears on the priority channel it will override any signals being received on any of the other channels. In addition, if you press the Push-To-Talk switch on the microphone at any time, the radio will transmit on the priority channel in the usual way.
Setting up your Group Scan.
To setup your radio for Group Scan:
1. Select the Group Scan mode by pressing the OS/GS key so that ‘GS’ is displayed.
2. Program your Priority channel memory with your preferred working channel.
(a) Select the required channel. (b) Press and hold the Channel knob for a
couple of seconds. The channel display will flash for a moment then a high beep will be heard as the selected channel is stored.
3. Program the required ‘other’ channels into your Group Scan memory.
(a) Select the required channel.
(b) If ‘M’ is displayed to the upper left of the channel number, the selected channel is presently in the scan memory. It can be removed by holding the SCAN key in for a few seconds until a low beep is heard. ‘M’ will then disappear indicating the channel is no longer in memory.
(c) If ‘M’ is not visible to the upper left of the channel number, then the selected channel is not in the memory. To add it, hold the SCAN key in for a few seconds until a high beep is heard. ‘M’ will now appear to the upper left of the channel number.
(d) Repeat steps (a) to (c) to add or remove other channels in the scan memory.
To Start Scanning.
To scan in the Group Scan mode, briefly press the SCAN key. A high beep will be heard, ‘SCAN’ will appear in the display and the radio will begin scanning.
NOTE: If there are no channels programmed in the Group Scan memory when you press the SCAN key, a low beep will be heard and the command will be ignored.
Scanning in the Group Scan Mode.
When scanning, the Group Scan feature scans all the channels programmed into the scan memory, with the priority channel being scanned after every fourth channel.
• If a signal is heard on a scan channel, the receiver will "lock" onto it and remain there for as long as the channel is busy, and for 5 seconds after the channel has cleared, 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 'locked' channel. If no signals are heard after 5 seconds, the radio will resume scanning.
• If a signal appears on the priority channel at any time (even when locked on a scan channel) the receiver will switch straight to
7
8
SELECTIVE CALLING
the priority channel and will stay there for as long as the channel is busy. During this time you can transmit on the priority channel in the usual way. Once there has been no activity on the priority channel for 5 seconds, the radio will resume scanning the other channels.
• To talk on the priority (working) channel while scanning, simply press the Push-To- Talk switch on the microphone. 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.
• If your radio pauses on a busy channel and you don't wish to listen to that conversation, briefly press the CALL button on top of the microphone. The radio will skip over that channel and resume scanning from the next channel in the sequence.
• If your radio is paused on a busy channel and you wish to remain there, briefly press the SCAN key. The radio will exit the Scan mode and remain on the busy channel. Note that the radio will no longer be monitoring the Priority channel (unless it is the busy channel). To resume scanning, press the SCAN key again.
• To go directly to the Priority channel, briefly press the Channel knob. The radio will exit the Scan function.
Ending the Group Scan.
To cancel the Scan mode, briefly press the SCAN key. A low beep will be heard and ‘SCAN’ will disappear from the display. If the radio was on a busy channel it will remain on that channel, otherwise it will return to the priority channel.
GENERAL OVERVIEW
What is Selcall.
Your TX3400 has a Selective Calling (Selcall) system which operates like your telephone. Your radio has been programmed with its own unique number. When this number is called, your TX3400 will beep to alert you.
If you do not want to hear any other activity while on the channel, you can push a QUIET button. The radio will then remain quiet until your number is called.
Your radio allows you to store up to four of your most frequently called numbers in memory. Each number can be labelled with a 5 letter name for easy identification.
Selcall Identification Number (Ident).
Your TX3400 is factory programmed with its own unique Selcall Identification Number (Ident). This number identifies your radio from
others in your area. You will need to make your Ident known to anyone who may need to call you with Selcall. Whenever your TX3400 hears a Selcall signal, it compares the incoming Ident with its own. If the two Idents match, the radio knows it is being called and sounds an alarm to alert you to the call.
The Selcall Ident for your radio is printed on the label on the rear panel of the main unit. The Ident is the last 5 digits of the radio’s serial number.
The Selcall Ident is also displayed in the bottom left of the LCD for a second each time the radio is turned on.
NOTE: Although your radio’s Selcall Ident is pre-programmed at the factory, you can arrange to have your dealer change it if required.
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