PAGE 2 INSTRUCTION MANUAL TX3120S
SUPPLIED WITH
TX3120S Radio DC Lead
Mounting Cradle Screw pack and Adaptor
Microphone Instruction Manual
Microphone clip
CONTENTS
SUPPLIED WITH ................................................... 2
INTRODUCTION ..................................................3
IMPORTANT INFORMATION CONCERNING UHF
CB RADIO ...........................................................3
POSSIBLE ISSUES .................................................3
EMERGENCY CHANNELS.....................................4
TELEMETRY CHANNELS ....................................... 4
FEATURES ...........................................................4
GENERAL OPERATION ......................................... 6
Front Panel Controls ............................................6
Rear Panel...........................................................6
LCD Panel ...........................................................7
Microphone ........................................................7
ON/OFF Switch .................................................... 8
Volume ...............................................................8
Minimum Volume Setting (VMIN) ......................... 8
Receive Audio Mute ............................................8
Selecting Channels ..............................................8
Configuration Menu ............................................9
Flipping the Display ...........................................11
Squelch .............................................................11
Signal Meter .....................................................12
Transmitting ......................................................12
Time-out Timer ..................................................12
Backlighting ......................................................12
Dynamic Volume Control (DVC) .........................14
Voice Scrambler .................................................14
Beep Tone Volume ............................................. 15
Silent Squelch Tail .............................................. 15
Disabling the Internal Speaker ...........................16
Repeaters and Duplex .......................................16
Priority Channel ................................................18
Scanning ...........................................................18
Open Scan ........................................................19
Group Scan .......................................................21
Network Scan (Net-Scan) ...................................22
CTCSS & DCS ....................................................24
INSTALLATION ..................................................26
Fitting the Radio ...............................................27
Antenna Connection .........................................30
Microphone Connection ....................................31
WIRING ............................................................31
DC Power Connection .......................................31
Noise Suppression .............................................32
CTCSS TONE FREQUENCY CHART ......................33
DCS CODE CHART ............................................. 34
UHF CB OPERATING FREQUENCIES ...................35
SPECIFICATIONS ...............................................36
SC WARRANTY AGAINST DEFECTS ....................38
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