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TX4400
User Manual
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GME TX4400 User Manual

TX4400
UHF CB RADIO
INSTRUCTION MANUAL
TX4400 INSTRUCTION MANUAL PAGE 1
PAGE 2 INSTRUCTION MANUAL TX4400
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Squelch ..................................5
Monitoring Function . . . . . . . . . . . . . . . . . . . . . . . . 5
Selecting Channels . . . . . . . . . . . . . . . . . . . . . . . . . 5
Back Lighting ............................. 5
Duplex Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Signal Strength Meter .......................6
SCANNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Scan Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selecting a Scan Group ......................6
Programming Scan Channels ..................6
To Start Scanning ..........................7
Scanning in the Open Scan Mode . . . . . . . . . . . . . . 7
Ending the Scan ...........................7
Using the Group Scan Mode . . . . . . . . . . . . . . . . . . 7
Scanning in the Group Scan Mode . . . . . . . . . . . . . 7
Using the Group Scan as a Second Open Scan . . . . . 8
PROGRAMMING RECEIVE-ONLY CHANNELS . . 8
SELECTIVE CALLING .......................10
What is Selcall ............................10
Selcall Ident Names ........................10
Selcall Memories ..........................10
Recalling Selcall Idents from the Memory ........ 11
Naming your Selcall Idents . ..................12
Receiving Selcalls . . . . . . . . . . . . . . . . . . . . . . . . . 12
QUIET MODE .............................. 13
Setting up the QUIET mode . . . . . . . . . . . . . . . . . . 13
Receiving Signals while Scanning in the QUIET Mode . .
14
GROUP CALLING . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Programming and Sending Group Calls . . . . . . . . . 15
PAGER (TRANSPOND) MODE . . . . . . . . . . . . . . . 15
Setting the Paging Ident . . . . . . . . . . . . . . . . . . . . 15
Scanning in the Page Mode ..................16
Deactivating the Page Mode . . . . . . . . . . . . . . . . . 17
CTCSS ....................................17
HOW TO DISABLE FEATURES . . . . . . . . . . . . . . . 18
REPEATERS ................................18
INSTALLATION .............................19
Rear microphone connection . . . . . . . . . . . . . . . . . 20
THE FOLLOWING ITEMS ARE INCLUDED WITH YOUR TX4400
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 22
• TX4400 Radio
• Mounting Cradle
• Instruction Manual
• MC509B Microphone
• Microphone Clip
• DC Lead
• Screw Pack
GENERAL
Your GME TX4400 radio is Australian designed and built and is one of the most advanced UHF Citizen Band radios available.
The TX4400 combines the very latest in electronic hardware with the most up-to-date computer aided design and manufacturing techniques to produce an extremely versatile mobile radio with outstanding specifications and performance.
The TX4400's DIN sized case allows it to be conveniently installed into a dashboard or console and its strong diecast aluminium chassis makes it the most robust radio of its kind. With just three rotary controls and five touch keys, the TX4400's extensive features are easy to operate.
FEATURES
• Microprocessor Controlled Frequency Synthesiser: Allows user programmable control of scanning, Selcall, CTCSS, 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.
• User Programmable Receive-Only Channels: Use the TX4400's front panel controls to program up to 20 of your own receive-only channels in the 465-485 MHz frequency range.
• In-Built CTCSS: User selectable Continuous Tone Coded Squelch System provides quiet channel operation (can be enabled or disabled on individual channels).
• In-Built Selcall: Selective Calling of individuals or groups with four or five digit ANI and fully user-adjustable 5 tone transmitted Selcall Ident. Also allows alphanumeric naming of up to 10 Idents for easier caller identification.
If any items are missing or damaged, please contact your retailer or place of purchase.
• Front Facing Speaker: Projects the sound forward for greater clarity.
• 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.
• Large High Contrast Liquid Crystal Display: Fully detailed LCD with large characters provides a visual indication of the selected channel and all selected functions at a glance. LED backlit for viewing at night with DIM function.
• 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.
• Feature Disabling Function: Allows Scanning, Squelch, Duplex, Priority, Channel selection and CTCSS 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.
• Microphone Connection: Optional rear connecting microphone facility allows for flexible installation.
• 20 Additional Channels: Room for an additional 20 Dealer programmable 'receive-only' channels.
• Australian Made: The TX4400 has been totally designed and manufactured in Gladesville NSW to meet the demanding needs of the Australian community.
TX4400 INSTRUCTION MANUAL PAGE 3
PAGE 4 INSTRUCTION MANUAL TX4400
BASIC OPERATION
FRONT PANEL CONTROLS
Rotate for Channel Selection Push for Priority Channel
Rotate for Squelch Press for Monitor Function
Press first to access Functions
ADJUSTING THE VOLUME
Rotate the Volume control clockwise past the ‘click’ to turn the TX4400 ON. Adjust the volume control for a comfortable listening level. If no sound is heard, rotate the Squelch knob fully counter-clockwise to temporarily un-mute the radio. You can now adjust the volume by listening to
SCAN Selector. Function: DIM
Display
Duplex Mode. Function: ALPHA
OPEN/GROUP Scan. Function: PAGE
Rotate for Volume
QUIET Mode. Function: SILENT
the receiver's background noise. When finished, rotate the Squelch knob clockwise again to re­mute the radio
LCD INDICATORS
QUIET Mode
Selcall
Call Mode
Receive
Indicator
Transmit Indicator
QUIET Tag
Channel Memory Indicator
Channel Display
Selcall memory Location
Scan Indicator
Selcall Ident Display ALPHA name Display
Duplex Indicator
CTCSS Indicator
SQUELCH
MON
The Squelch is used to eliminate any annoying background noise when there are no signals present. The TX4400 features a continuously variable Squelch control system allowing the user to set the Squelch for optimum performance.
To adjust the Squelch, first rotate the Squelch control fully counter-clockwise until the background noise is heard and the ‘BUSY’ indicator is displayed on the LCD. Now advance the Squelch control slowly clockwise until the noise is just extinguished and the ‘BUSY’ indicator disappears. At this point the receiver will remain quiet while no signals are present, but an incoming signal will override the Squelch and be heard in the speaker. As the Squelch control is advanced further clockwise the Squelch action is progressively increased and stronger incoming signals are needed to overcome it.
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 turn the Squelch control fully counter-clockwise to open the squelch, which will allow the signal to be heard clearly.
MONITORING FUNCTION (MON)
When using CTCSS, press the Squelch knob to temporarily open the Squelch to allow you to listen for signals on the channel. For a full description of the MON function refer to the CTCSS section.
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 in large numbers on the LCD.
BACK LIGHTING
The Liquid Crystal Display and function keys are backlit for easy viewing at night or in low light situations. The LED back lighting is on at all times while the TX4400 is turned on.
To DIM the backlighting, briefly press the F key, followed by the DIM key. Repeat the sequence to restore the backlighting to full brightness.
DUPLEX SWITCH
Duplex operation allows the TX4400 to transmit on a different frequency to that which it receives. This allows operation through any repeater stations in your area. Repeaters 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 TX4400 receives on that channel but actually transmits 30 channels higher.
Channel Selected
Receive Channel
Transmit Channel
The TX4400 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. The unused repeater channels can then 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.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
31 32 33 34 35 36 37 38
TX4400 INSTRUCTION MANUAL PAGE 5
PAGE 6 INSTRUCTION MANUAL TX4400
PRIORITY CHANNEL
The Priority Channel feature allows you to store one of the 40 Channels in the TX4400 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 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 the Priority Channel:
Briefly press the Channel Knob. The TX4400 will immediately switch to the Priority Channel accompanied by a high beep.
SIGNAL STRENGTH METER
The TX4400 has a digital signal strength meter that is displayed on the LCD. When in the normal receive mode (scan not selected) the received signal strength is displayed as numbers from 0 to 9 (with 9 being the strongest) on the lower right of the display.
SCANNING
The TX4400 is provided with a SCAN function to allow groups of user programmable Channels to be scanned for signals. Channels can be scanned at up to 10 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 TX4400 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). 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.
1- 2 - 3 - 4 - 20 - 5 - 6 - 7 - 8 - 20
Example: Scanning Channels 1 - 8 with Priority Channel 20 in Group Scan
SELECTING A SCAN GROUP
The current scan group is shown on the display as OS for Open Scan or GS for Group Scan.
Open scan mode Group Scan Mode
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 TX4400 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 by rotating the
Channel selector.
1- 2 - 3 - 4 - 5 - 6 - 7 - 8
Example: Scanning Channels 1 - 8 in Open Scan
Channel is in Memory
• I f ‘M’ is visible to right of the display, 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 right of the display, 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 right of the display.
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 transmit 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: In the Open Scan mode your TX4400 will not allow you to transmit while it is scanning. If the PTT button is
pressed while scanning, the radio will give a low beep and will ignore the command. Your radio will only transmit while it is paused on a busy Channel.
ENDING THE SCAN
To stop scanning, briefly press the SCAN key. 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.
USING THE GROUP SCAN MODE
Group Scan allows you to transmit and receive normally on your priority (working) Channel, but between breaks in the conversation, the TX4400 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 PTT switch on the microphone at any time, the radio will transmit on the priority Channel in the usual way.
SETTING UP THE 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.
3. Program the required ‘other’ Channels into your Group Scan memory.
SCANNING IN THE GROUP SCAN MODE
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.
When scanning, the TX4400 scans all the Channels programmed into the Group Scan memory, with the priority Channel being scanned after every fourth Channel.
• If a signal is heard on a scanned Channel, scanning
will pause on that Channel 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
TX4400 INSTRUCTION MANUAL PAGE 7
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reception of the 'paused' 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 paused on a scan Channel) the receiver will switch straight to 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 AT ANY TIME,
simply press the PTT 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 SCAN
To cancel the Group 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.
USING THE GROUP SCAN AS A SECOND OPEN SCAN
There may be applications where you have no need for the priority Channel and would prefer to have two Open Scan modes with separate Channel groups in each. This would allow you to scan either Channel group without the interruption caused by monitoring a priority Channel.
Your TX4400 can be Dealer programmed to convert the Group Scan function into a second Open Scan mode. If you would prefer this feature over the present Group Scan option you should contact your GME Dealer to arrange for this feature to be enabled.
When the second Open Scan mode is enabled, the original
Open Scan mode becomes Scan 1 while the new additional Open Scan mode becomes Scan 2. To select the required scan mode briefly press the OS/GS key. S1 is displayed for Scan 1 and S2 for Scan 2.
The two Open Scan modes are identical in operation. To program and operate each Open Scan mode refer to the section earlier on Open Scan
Open Scan 1 Open Scan 2
Note: Enabling or disabling the second Open Scan mode is not a user selectable option. Once enabled by your Dealer, the additional Open Scan mode becomes a permanent part of the TX4400’s features and replaces the standard Group Scan function. If you find later that you need the Group Scan function re-enabled, you will need to return your TX4400 to your Dealer.
PROGRAMMING RECEIVE-ONLY CHANNELS
Your TX4400 has provision for an extra 20 Receive-Only Channels, in addition to the standard 40 UHF CB Channels provided. These extra Channels can be user programmed into Channel positions 41 through 60, within the frequency range of 465 to 485 MHz. Frequencies are selected in 25 kHz steps. Note that the standard CB Channels 1 through 40 are fixed and cannot be altered.
ACTIVATING THE 'PROGRAMMING' MODE
Your TX4400 is supplied from the factory with the Receive­Only Channels deactivated. You can activate and program them yourself as follows:
1. Turn the radio OFF.
2. Press and hold the Channel selector while turning the
radio ON.
3. Release the Channel selector. The radio is now in
'Programming' Mode.
Rotate the Channel selector clockwise past Channel 40. You will now find that you can select additional Channel numbers 41 through 60. Initially, these Channels will have no frequencies installed in them and are in effect, turned OFF. Each individual Channel will need to be turned ON and programmed with the receive frequency of your choice.
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