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REAR PANEL CONNECTORS 
 
 
 
 
 
 
 
 
 
 
 
 
A) EXTERNAL SPEAKER CONNECTOR 
A 3.5mm diameter jack is provided for a 4 ohm external speaker.  The 
internal speaker is silenced when the external speaker is connected. 
 
B) AUXILIARY SPEAKER CONNECTOR 
A 3.5mm diameter jack for a 4 ohm auxiliary speaker. 
 
C) ANTENNA CONNECTOR 
SO-239 type connector.  Output is 50 ohms and must be connected to a 
properly installed .50 ohm antenna. 
 
D) DC 13.2 
Polarized plug: 13.2 volt DC input for NEGATIVE GROUND SYSTEM 
ONLY. 
 
 
GENERAL SAFETY INFORMATION 
 
The following precautions are recommended: 
- DO NOT operate the transmitter of a mobile radio when someone outside 
the vehicle is within two feet (0.6 meter) of the antenna. 
 
- DO NOT operate the transmitter of any radio unless all RF connectors are 
secure and any open connectors are properly terminated. 
 
- DO NOT operate this equipment near electrical blasting caps or in an 
explosive atmosphere. 
 

Summary of Contents for SMX-4150

Page 1: ...OR S MANUAL INTRODUCTION The SMX 4150 series mobile has 16 Channel capability enhanced to 99 with the selcall board fitted with CTCSS and optional DCS signalling systems FRONT PANEL CONTROLS SWITCHES...

Page 2: ...BUTTON used only on system mobiles AUXILIARY SPEAKER BUTTON silences internal speaker and connects the Auxiliary Speaker requires auxiliary option board MONITOR BUTTON disables tone or digital coded s...

Page 3: ...e radio on and select the desired frequency by pressing either of the channel select buttons until the channel number is visible in the display 2 With the Monitor Button LED 2 lit adjust the volume co...

Page 4: ...4 Release the PTT bar as soon as you have completed the transmission NOTE License requirements normally require that you monitor a frequency for activity before transmitting TRANSMIT TIME OUT TIMER T...

Page 5: ...rn on to shut off the microprocessor is working From initial self check to channel scan operation it is designed to keep you informed of its operating status If your radio displays Er 01 There is a pr...

Page 6: ...NOTE Should any of these messages appear on your display MAXON recommends that you consult the dealer from whom the unit was purchased so that it can be serviced by a qualified service technician...

Page 7: ...connected to a properly installed 50 ohm antenna D DC 13 2 Polarized plug 13 2 volt DC input for NEGATIVE GROUND SYSTEM ONLY GENERAL SAFETY INFORMATION The following precautions are recommended DO NO...

Page 8: ...operly when the radio is transmitting Do not install the unit where it would likely cause injury in case of vehicle accident Mount the unit so that the user can easily see and reach all controls and t...

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