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T X 3 1 2 0 S  

I N S T R U C T I O N   M A N UA L  

PA G E   2 3

in the reception of the busy channel. Once the 
signal has gone and there has been no activity 
for 5 seconds, the radio will resume scanning. 

   To transmit on the Priority channel at any time, 

simply press the 

PTT

. The radio will switch 

straight to the Priority channel. When you have 
finished your conversation and there has been 
no further activity for 5 seconds, the radio will 
resume scanning the other channels.  If you 
don’t wish to listen to a busy channel, briefly 
rotate the 

Channel

 control (or press the   

or   keys) while the radio is paused on that 
channel. The busy channel will be temporarily 
removed from the scan group to allow time 
for the channel to become clear again and 
scanning will continue. The skipped channel 
will be reinstated in the scan sequence after 30 
seconds (see Auto Skip).

   If you need to use your Priority channel (for an 

urgent call), briefly press the 

Channel

 control. 

The scan will be cancelled and the radio will 
jump straight to the Priority channel.

   If the radio is paused on a busy channel and 

you want to remain there, briefly press the 

 key. The radio will exit scan and remain 

on the busy channel. At this point you will no 
longer be monitoring the Priority channel. To 
resume Group scanning press the 

 key 

again.

NETWORK SCAN (NET-SCAN)

Net-Scan allows a group of radio users to maintain 
communications even when the band is congested. 
To achieve this all members of the Net-Scan group 
must share a common CTCSS/DCS code and a 
common set of scan channels.

Once activated, Net-Scan’s intelligent scanning 
software keeps track of clear channels within 

your scan group. When any member of the group 
transmits, their radio automatically selects a clear 
channel to transmit on. Other radios scanning 
in the same Net-scan group will lock onto that 
channel allowing all members of the group to join 
the conversation.

If a signal from outside your Net-Scan group 
appears on the chosen channel (either with 
no code or the wrong code), the group will 
automatically switch to a new clear channel at 
the next transmission. In this way the group can 
continue to communicate with minimal interference 
to or from other users. 

Enabling Net-Scan

Net-Scan is normally switched off by default but 
can be enabled through your radio’s menu.

NOTE: 

When you enable Net-Scan you will also be 

prompted to choose a suitable CTCSS or DCS tone 
to be used by your Net-Scan group. All members of 
your Net-Scan group must use this same code.

To Enable Net-Scan

1.   Press and hold the 

Channel

 control to enter 

the menu. The display will show the current 
Squelch level setting.

2.   Rotate  the 

Channel

 control until ‘NS xxx’ is 

displayed (where xxx is the current Net-Scan 
setting) then press the 

Channel

 control to 

select it.

3.   Rotate  the 

Channel

 control to change the 

current Net-Scan setting.

   To enable Net-Scan using CTCSS, select from 

NS-01 to NS-50 (CTCSS tones 01 to 50).

   To enable Net-Scan using DCS, select from 

NS001 to NS104 (DCS codes 001 to 104).

Summary of Contents for TX3120S

Page 1: ...Super compact 5 watt UHF CB radio ScanSuite 5 YEAR WARRANTY I N S T R U C T I O N M A N U A L ...

Page 2: ...Selecting Channels 9 Configuration Menu 10 Flipping the Display 12 Squelch 12 Signal Meter 13 Transmitting 13 Time out Timer 13 Backlighting 13 Dynamic Volume Control DVC 15 Voice Scrambler 15 Beep Tone Volume 16 Silent Squelch Tail 16 Disabling the Internal Speaker 17 Repeaters and Duplex 17 Priority Channel 19 Scanning 19 OPEN SCAN 20 Group Scan 22 Network Scan Net Scan 23 CTCSS DCS 25 INSTALLAT...

Page 3: ...elieving 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 ...

Page 4: ...cket Part No MB043 designed to hold the TX3120S UHF CB radio so that it can be remotely mounted onto the windscreen within the vehicle or alternatively on a flat surface where the suction base can take hold In order to ensure driver safety when using the TX3120S Plug n Play GME provides the following recommendations and guidelines The product should not be mounted in a way that blocks the driver s...

Page 5: ...udio 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 Identifies interference caused by strong local signals on adjacent channels and prevents these from opening your Squelch ASM also minimises distortion on reception by fine tuning the receiver frequency to match that of th...

Page 6: ...ironments by bringing the sound closer to you USER CONTROLS AND INTERFACE Full Spectrum Backlighting User adjustable totally customisable backlight settings to match the vehicle s dashboard lighting or driver s preference Flip Feature Unit can be mounted with the speaker facing upwards or downwards and the display flipped over using a simple menu selection to allow viewing of the display from eith...

Page 7: ...TX3120S INSTRUCTION MANUAL PAGE 7 REAR PANEL FRONT PANEL CONTROLS GENERAL OPERATION Volume Control On Off LCD Channel Control Squelch Scan DC Socket Speaker Antenna Microphone ...

Page 8: ...PAGE 8 INSTRUCTION MANUAL TX3120S MICROPHONE LCD PANEL Channel Down Channel Up Push To Talk Scan Priority Channel Priority Busy Transmit Duplex Scan Channel Information CTCSS DCS Signal Meter ...

Page 9: ...be flashing 3 Rotate the Channel control to make the desired selection from 1 9 For the lowest minimum volume level select 1 When finished briefly press the Channel Control to return to the menu or press and hold the Channel Control to exit the menu RECEIVE AUDIO MUTE There may be times when it is desirable to temporarily override the minimum volume setting and completely mute the receiver audio T...

Page 10: ...selected item will flash 3 Rotate the Channel control to adjust the selected item a To save the current setting and return to the menu briefly press the Channel control b To exit without saving and return to the menu briefly press the Volume control c To save the current setting exit the menu and return to normal operation press and hold the Channel control or simply wait a few seconds for the men...

Page 11: ... Priority Channel PRI01 PRI80 Duplex DUPOF Duplex Off DUPON Duplex On Speaker Internal SPKOF Off SPKON On Beep Level BEEP0 BEEP9 Scrambler Encoder ENCOF Off ENCON On Dynamic Volume Control DVCOF Off DVCON On S Meter S MET Normal Signal Meter S LIN Linear Signal Meter BATT Battery Voltage VMIN Minimum Volume Preset VMIN1 VMIN9 Busy Channel Lockout BCLOF Off BCLON On Silent Squelch tail SSTOF Off SS...

Page 12: ...liminate any annoying background noise when there are no signals present 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 the icon is displayed on the LCD When the Squelch is closed the receiver remains quiet while there are no signals present but any incoming signals will override the Squelch and be heard in the spea...

Page 13: ...BATT to display the battery voltage instead of signal strength When finished briefly press the Channel control to return to the menu or press and hold the Channel control to exit the menu TRANSMITTING Prior to transmitting always check the channel is not being used This can be done by listening to the channel or by visually checking that the icon is not visible or the signal meter is not indicatin...

Page 14: ...ate the Channel control left or right to adjust the colour 3 Briefly press the Channel control to return to the menu Whiteness 1 Rotate the Channel control to the right until WHITE is displayed then briefly press the Channel control to select it WHITE will flash 2 Rotate the Channel control left or right to adjust the colour saturation whiteness Rotate right to reduce the colour intensity or left ...

Page 15: ...ol to select it ON or OF will be flashing 3 Rotate the Channel control to make the desired selection Select DVCON to switch the Dynamic Volume Control ON or DVCOF to switch it OFF When finished briefly press the Channel control to return to the menu or press and hold the Channel control to exit the menu Dynamic Volume Control ON Dynamic Volume Control OFF VOICE SCRAMBLER Your radio incorporates a ...

Page 16: ...ion just before the Squelch closes To some it is a reassuring confirmation that it is their turn to transmit but in some applications it may be an annoyance especially when listening through an earpiece or headphones The Silent Squelch Tail function removes this noise reducing it to a faint click as the Squelch closes To enable or disable the Silent Squelch Tail 1 Press and hold the Channel contro...

Page 17: ...ves This allows operation through repeater stations A repeater station consists of a linked transmitter receiver combination installed in a prominent location The repeater is designed to receive signals on a designated channel and retransmit them on another channel Repeaters are usually mounted on hills or tall buildings The increase elevation greatly improves both the receiving and transmitting r...

Page 18: ...N or OF then press the Channel control to select it NOTE If DUP is displayed the selected channel is not a repeater channel Please exit the menu and select a repeater channel 4 Rotate the Channel control to the right to enable Duplex on the selected channel DUPON will be displayed and the icon will appear 5 Rotate the Channel control to the left to disable Duplex on the selected channel DUPOF will...

Page 19: ...hen press the Channel control to select it 3 Rotate the Channel control to select your required priority channel number When finished press and hold the Channel control to exit the menu Priority channel 80 To recall a Priority Channel Briefly press the Channel control The radio will immediately switch to the Priority channel The priority channel is identified by the icon Priority Channel Icon NOTE...

Page 20: ... interrupt the scan after the 30 second skip period has elapsed hold the key while the radio is paused on that channel to completely remove that channel from the scan group for the duration of the scan session To restore the channel simply stop and restart the scan session using the key or switch the radio Off then On again NOTE You can skip as many busy channels from the scan group as you wish ho...

Page 21: ...uring this time the channel numbers will scroll rapidly as the channels are scanned NOTE If there are less than 2 channels programmed into the scan memory when you press the key a low beep will sound and the command will be ignored Operating in the Open Scan Mode If a busy channel is found scanning will pause to allow the signal to be heard and will remain there for as long as the channel remains ...

Page 22: ...eys 2 Check to see if the symbol is displayed on that channel If is displayed the selected channel is already in the scan memory To remove it press and hold the key will disappear from the display If is not displayed the selected channel is not in the scan memory To add it press and hold the key will now be displayed on that channel Repeat to add or remove other channels in the scan memory Select ...

Page 23: ...is congested To achieve this all members of the Net Scan group must share a common CTCSS DCS code and a common set of scan channels Once activated Net Scan s intelligent scanning software keeps track of clear channels within your scan group When any member of the group transmits their radio automatically selects a clear channel to transmit on Other radios scanning in the same Net scan group will l...

Page 24: ... Channel control or the or keys 2 Check to see if the scan symbol is displayed on that channel If is displayed the selected channel is already in the scan memory To remove it press and hold the key will disappear If is not displayed the selected channel is not in the scan memory To add it press and hold the key will now be displayed on that channel Repeat to add or remove further Net Scan channels...

Page 25: ... 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 b...

Page 26: ... CTCSS or DCS tone has been selected in the Configuration menu If CTCSS DCS has been set to OFF Silent mode is inhibited 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 for CTCSS or icon for DCS will be displayed in the lower right of the display to indicate Silent mode is now enabled on that channel NOTE The CTCSS DCS ...

Page 27: ...press the key The squelch will open and all signals will be audible on the channel Briefly press the key again to close the Squelch and restore the silent mode INSTALLATION The TX3120S is supplied with a slim U shaped mounting bracket The bracket 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 i...

Page 28: ... the radio using the gimbal knob The cable clip can be installed on either side of the radio with the cable clamp in the upper or lower position To install the cable into the cable clip 1 Determine which way up your radio will be installed and which side of the radio you will mount the clip This will determine the orientation of the cable when you insert it into the clamp 2 Press the cable into th...

Page 29: ...ing bracket place the cable clip in the required location and insert the plastic collar provided Secure the assembly using the gimbal knob and tighten The radio can now be fixed directly to a flat surface using Velcro or tape Mounting Bracket Microphone Cable Clip Plug Microphone Plug into Socket on Rear Panel Microphone Cable Gimbal Knob Collar Plug Microphone Plug into Socket on Rear Panel Gimba...

Page 30: ... To flip the display please see the section Flipping the Display described under General Operation ANTENNA CONNECTION 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...

Page 31: ... or frame of the vehicle There are two recommended methods of installation Radio remains ON when ignition switch is OFF RED BLACK Chassis Car battery Ignition Switch Radio turns ON and OFF with ignition switch RED BLACK Chassis Car battery Ignition Switch Connect the radio s negative black lead to the vehicle s chassis or if preferred directly to the battery s negative terminal The radio s positiv...

Page 32: ...to fit 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 HIGH VOLTAGE DETECTION The radio has a built in high voltage detection system to warn you if an overvoltage situation occurs If the overvoltage warning appear...

Page 33: ... 8 41 165 5 3 74 4 16 114 8 29 179 9 42 171 3 4 77 0 17 118 8 30 186 2 43 177 3 5 79 7 18 123 0 31 192 8 44 183 5 6 82 5 19 127 3 32 203 5 45 189 9 7 85 4 20 131 8 33 210 7 46 196 6 8 88 5 21 136 5 34 218 1 47 199 5 9 91 5 22 141 3 35 225 7 48 206 5 10 94 8 23 146 2 36 233 6 49 229 1 11 97 4 24 151 4 37 241 8 50 254 1 12 100 0 25 156 7 38 250 3 13 103 5 26 162 2 39 69 4 ...

Page 34: ...6 24 134 42 246 60 351 78 465 96 664 7 043 25 143 43 251 61 356 79 466 97 703 8 047 26 145 44 252 62 364 80 503 98 712 9 051 27 152 45 255 63 365 81 506 99 723 10 053 28 155 46 261 64 371 82 516 100 731 11 054 29 156 47 263 65 411 83 523 101 732 12 065 30 162 48 265 66 412 84 526 102 734 13 071 31 165 49 266 67 413 85 532 103 743 14 072 32 172 50 271 68 423 86 546 104 754 15 073 33 174 51 274 69 4...

Page 35: ... 31 477 175 51 476 6875 71 477 1875 12 476 700 32 477 200 52 476 7125 72 477 2125 13 476 725 33 477 225 53 476 7375 73 477 2375 14 476 750 34 477 250 54 476 7625 74 477 2625 15 476 775 35 477 275 55 476 7875 75 477 2875 16 476 800 36 477 300 56 476 8125 76 477 3125 17 476 825 37 477 325 57 476 8375 77 477 3375 18 476 850 38 477 350 58 476 8625 78 477 3625 19 476 875 39 477 375 59 476 8875 79 477 3...

Page 36: ...0 Ohms nominal Operating Voltage Range 10 15 volts DC Nominal Battery Voltage 13 8 volts DC Over Voltage Protection 25 volts DC max At 18 volts DC the RF power is reduced and the words Hi DC flash Over Current Protection In line 2A Fuse Reverse Polarity Protection Shunt Diode TRANSMITTER RF Output 5 0 watts max Modulation FM Maximum Deviation 2 5 kHz at 20 dB limiting Spurious Emissions 70 dBc Tra...

Page 37: ...ut Sensitivity 123 dBm for 12 dB SINAD unweighted Selectivity 6 dB at 3 5 kHz 60 dB at 12 5 kHz Intermodulation Immunity 73 dB Blocking Immunity 100 dB Spurious Response Immunity 70 dB Audio Power 3 watts average into 4 Ohms Audio Signal to Noise 45 dB Receive Frequency Response 6 dB Octave de emphasis 300 Hz to 3 kHz 1 3 dB Conducted Spurious Emission 57 dBm MECHANICAL Dimensions 102 W x 97 D x 2...

Page 38: ...r of the period of warranty for the goods into which they are incorporated 2 3 To the extent permitted by law our sole liability for breach of a condition warranty or other obligation implied by law is limited a in the case of goods we supply to any one of the following as we decide i the replacement of the goods or the supply of equivalent goods ii the repair of the goods iii the cost of repairin...

Page 39: ...ods modified or altered in any way b defects and damage caused by use with non Standard Communications products c repairs performed other than by our authorised representative d defects or damage resulting from misuse accident impact or neglect e goods improperly installed or used in a manner contrary to the relevant instruction manual or f goods where the serial number has been removed or made il...

Page 40: ...or more information call or visit us A division of Standard Communications Pty Ltd Head Office PO Box 96 Winston Hills NSW 2153 Australia New Zealand PO Box 58446 Botany Auckland 2163 NZ T 09 274 0955 All international enquiries email export gme net au ...

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