INSTRUCTION MANUAL TX3400 UHF TRANSCEIVER
CONTENTS Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CTCSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CTCSS Tone Frequency Chart . . . . . . . . . . . . 17 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Disabling Functions . . . . . . . . . . . . . . . . . . . . . . . 18 Operation . . . . . . . . . . . . . . . . . .
• CTCSS Ready: A built-in Continuous Tone Coded Squelch System option provides quiet channel operation (when approved by the Australian Communications Authority). • 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.
VOLUME 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. Rotate the volume control clockwise past the "click" to turn the TX3400 on. Adjust the volume control for a comfortable listening level.
To remove Duplex from a channel: automatically re-transmit your signal over a wider area, providing greatly increased range. 1. Select the required channel 1 - 8. ‘DUP’ will be visible on the display. 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. 2. Briefly press the DUP key. ‘DUP’ will disappear from the display accompanied by a low beep. E.g.
Selecting a Scan Group. To Start Scanning: The current scan group is shown on the display as OS for Open Scan or GS for Group Scan. 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. 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.
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. (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. Ending the Open Scan.
• 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. 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.
Naming your Selcall Idents. To enter a Selcall IDENT. The TX3400 allows you to name up to four of your most often used Selcall Idents using a 5 character word. The name can then be stored in memory with the Ident. This makes it easier to identify who’s Ident you are recalling from the memory. In addition, if an incoming Selcall matches one of the Idents stored in the memory, its name can be displayed to make it easier for you to identify the caller. Briefly press the CALL button on top of the microphone.
STORING SELCALL IDENTS Switching between Ident Mode and Name Mode. Your TX3400 is fitted with four Selcall Ident memories, allowing you to store up to four frequently used Selcall Idents. The memories are accessed using the four keys beneath the display labelled 1, 2, 3 and P. The TX3400 can be toggled between the normal Ident mode and the Name mode as follows: 1. Briefly press the CALL button to select the ‘CALL TO’ mode.
To exit the ‘CALL TO’ mode, briefly press the CALL button. The radio will return to normal operation. Cancelling the Selcall Alarm. Pressing just about any key or knob on the TX3400 will cancel the Selcall Alarm. However, the following are the recommended methods. The radio can now be left in the Name mode so that an incoming Selcall matching one of those in the radios memory will display the name associated with that Selcall Ident instead of the Ident itself.
USING THE QUIET MODE The QUIET mode prevents any incoming transmissions from being heard in your TX3400’s speaker until your Selcall Ident is received. This allows you to monitor a busy channel for calls without being disturbed by unwanted signals. but will remain quiet on those channels that are set for Quiet operation.) When your Selcall Ident is received, the QUIET mode is cancelled and all incoming signals will be heard in the speaker. To De-activate the QUIET Mode.
may switch between the open channel and the Priority channel. This is normal). SCANNING IN THE QUIET MODE The TX3400 will allow you to scan while the QUIET mode is active. You can then monitor a group of Quiet channels or a combination of Quiet and Open channels. • 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.
Programming and Sending Group Calls. To Send the Selcall Ident. Entering a Group call Ident is the same as entering a normal Selcall Ident. With the required Selcall Ident displayed in the ‘CALL TO’ mode, press and hold the CALL button for a few seconds until the radio beeps. The Selcall Ident will be sent automatically and the radio will return to normal operation. 1. Briefly press the CALL button on top of the microphone. ‘CALL TO’ will appear on the display along with the last Selcall Ident you sent.
Setting the PAGEing Ident. 1. Briefly press the CALL button to select the ‘CALL TO’ mode. The PAGE Ident is the Ident of the receiver you will use to receive the paging call. It is programmed in the same way as Selcall Idents and is stored in a special Page memory. 2. Briefly press the ‘P’ memory key. The page Ident will be displayed. If the radio is in Name mode, the Name associated with the page Ident will be displayed instead of the Ident. 1. Press the CALL button to select the ‘CALL TO’ mode.
With the Page mode selected, the radio will operate normally and you can transmit and receive on the selected channel. operation, the QUIET mode will be automatically selected and ‘QUIET’ will be displayed. You will not be able to transmit. • If the selected channel has been tagged for Quiet operation, the QUIET mode will be automatically selected and QUIET will be displayed. In this case, you will not be able to transmit. Scanning in Open Scan Mode.
6. Select the desired transmit tone using the channel switch. Press and hold the SQL key to store the tone. CTCSS tone frequency used is user programmable. Note that the CTCSS tone you select will be used for all CTCSS enabled channels. 7. Now switch the radio OFF then ON again to return to normal operation. To select the required CTCSS tones on your radio, use the following procedure: NOTE: To disable the sending or receiving of CTCSS tones, set either tone to 00.
DISABLING FUNCTIONS The TX3400 has a number of features that can be disabled individually by the user to allow for much simpler operation. These include the Priority, Scan, Duplex and Squelch/CTCSS functions that are normally accessed via keys on the front of the radio. To re-enable the key, repeat the steps above. When the radio is turned on again, a high beep will be heard and the key will function normally again. To disable one of the keys: 1. Tur n the radio OFF using the volume control.
Mounting the Cradle. 2. Gently press the rubber strain relief into the hole surrounding the socket so that the slot around the strain relief fits neatly inside the lip of the hole. Plastic tab Removing the microphone. 1. Squeeze the rubber strain relief near the front panel to disengage the slot, and slide the strain relief back along the microphone cord. Fitting the Radio. Slide radio fully into cradle until it clicks into place. 2.
2. Pull the dummy front panel away from the chassis and carefully unplug the connecting cable. Din Adaptor MBD001 Reassembly. 1. Plug the connecting cable from the main unit into the remote head front panel. 2. The remote front panel can be oriented so that the speaker in the main unit is facing either up or down. Position the front panel as required and slide it onto the main chassis.
DC, the channel display will flash ‘hi dc’ for 5 seconds when the unit is first turned on, or at the time the voltage exceeds 18 Volts. In addition, when transmitting, the TX indicator will flash and the transmitter will select low output power. If the power source exceeds 30 Volts, the internal protection diode will cause the fuse to blow. ANTENNA CONNECTION GME Electrophone supply a wide range of mobile and base station antennas designed specifically for UHF CB communications.
able to transmit and receive on different channels (known as DUPLEX). Your TX3400 has a Duplex key to allow you to operate through repeaters. designated for repeater use. When Duplex mode is selected, your TX3400 receives on the selected channel (e.g. channel 1) but automatically transmits 30 channels higher (i.e. channel 31). The UHF repeater receives your signal on Channel 31 and retransmits it on channel 1 for others to hear.
SPECIFICATIONS GENERAL Compliance: Frequency range: Number of Channels: Channel Spacing: Operating Mode: Scanning Speed: Antenna Impedance: Nominal Battery Voltage: Operating Voltage Range: Battery Polarity: Standard Test Voltage: Overvoltage Protection: Reverse Voltage Protection: Overcurrent protection: Operating Temperature: RECEIVER Meets AS/NZS 4365 for radio communications equipment in the UHF citizen band and personal radio service. 476.425 MHz 477.
WARRANTY (b) Connection to incorrect supply voltage. GME ELECTROPHONE limit this warranty to the original purchaser of the equipment. (c) Operation without an antenna or by connection to an antenna which has been incorrectly installed, resulting in damage to the transceiver’s output circuit. GME ELECTROPHONE warrant the TX3400 to be free from defects in material and workmanship for a period of twenty four (24) months from the date of purchase from their authorised dealer.
