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OPERATING  INSTRUCTIONS

The  АХ  144  opérâtes  on  40  AM  channels,  40  Upper  Side  Band  channels  and  40 

Lower Side  Band channels.

When  you  receive  the  SSB  signal  in  the  proper  mode,  audio  Sound  may  be  either 

too  high  pitched  or  low  pitched,  indicating  that  your  receiver  may  not  be  tuned  to 

the  exact  same  frequency  as  the  transmitter  to  which  it  is  listening.  The  AX  144  is 
equipped  w ith  a  Clarifier.  By  tuning  the  Clarifier,  you  can  slightly  change  the 

frequency  of the  receiver,  so  you  get a  normal  tone.

Mm'PF  GAIN CONTROL 

DIGITAL  LED 

CH9  INDICATOR

MODE  SELECTOR

 

OPERATING  CONTROLS

Y o u r 

AX  144 

,  designed  fo r  ease  of  operation,  is  provided  w ith  the  following

 

operating  Controls:

1.  OFF/ON  VO LUM E:  To  turn  the  transceiver  on,  rotate  the  control  clockwise 

past  cl ick.  То  turn  the  transceiver  off,  rotate  the  control  counterclockwise  past 

click.  Rotate the control  clockwise  for  a  comfortable  audio volume  level.

2.  CHANNEL  SELECTOR:  This  switch  is  used  to  select  any  one  of  the  40 

Citizens  Band  channels.  Channel  9  has  been  reserved  by  the  D.O.C.  for 

emergency  communications  involving  the  immédiate  safety  of  life o f  individuals 

or  immédiate  protection  of  property.  Channel  9  may  also  be  used  to  render 

assistance  to  a  motorist.

3.  MODE  SELECTOR:  This  switch  selects  AM,  USB  or  LSB  mode  of  operation. 

This  selector  changes  the  mode  of  operation  of  both  transmitter  and  receiver 

simultaneously.

Set  the  selector  to  the  mode  on  which  you  wish  to  communicate.  For  easier 

identification  of  the  mode,  LED  mode  indicator  is  provided  in  three  different 

colors,  green  for  AM,  yellow for  USB,  and  red  for  LSB.

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Summary of Contents for AX 144

Page 1: ...unlden 144 CB RADIO OWNERS MANUAL...

Page 2: ...ious accessory antenna and power r ceptacles as well as the SERIAL NUMBER You are urged to record your model number and your SERIAL NUMBER in the spaces provided below Model________________ __________...

Page 3: ...Connector UHF SO 239 Semiconductors 47 transistors 5 integrated circuits 66 diodes and 6 light emitting diodes Meter Illuminated indicates relative power output and received signal strength green rece...

Page 4: ...5 MHz Adjustable for optimum signal r ception AGC Less than 10 dB change in audio output for inputs from 10 to 500 000 microvolts Squelch Noise Blanker Clarifier Range Audio Output Power Frequency Res...

Page 5: ...LSB without the purchase of any additional crystals LARGE LED CHANNEL DISPLAY Channel number is displayed by use of LED light emitting diode display for ease of channel s lection CLEAN SIGNAL Transmit...

Page 6: ...radio please read carefully the following descriptions and operating instructions NOTE This radio has been designed for operation in the 11 meter Citizens Band Radio Service It uses a frequency synth...

Page 7: ...ust be mechanically strong Proceed as follows to mount the transceiver 1 After you h ve determined the most convenient location in your vehicle hold the radio with mounting bracket in the exact locati...

Page 8: ...large trucks may use a positive ground system 1 Negative ground system Connect the Red power lead from the radio to the positive or battery terminal or other convenient point and connect the Black po...

Page 9: ...e power supply capable of supplying 2 5 amps at a 13 8V DC output with a nominal input voltage of 120 volts AC 50 60Hz Simply connect the red and black leads of the transceiver to the correspond ing D...

Page 10: ...turn the transceiver on rotate the control clockwise past cl ick turn the transceiver off rotate the control counterclockwise past click Rotate the control clockwise for a comfortable audio volume le...

Page 11: ...up to 100 depending on the setting of the microphone gain control using the microphone provided with the unit UNIDEN s automatic compression and peak limiting circuits assure maximum modualtion with m...

Page 12: ...hes from your mouth and speak at a normal voice level RECEIVE OPERATING PROCEDURE 1 Place the CB switch in CB position 2 Turn the set on by turning the VOLUME CONTROL clockwise past click NOTE Microph...

Page 13: ...WARNING Operation of this equipment requires a valid station license issued by the Depart ment of Communication Do not transmit with your equipment until you h ve a license 12...

Page 14: ...pecially designed for the environment encountered in mobile installations The use of all solid state circuitry and its light weight resuit in high reliability Should failure occur however replace part...

Page 15: ...CIRCUIT DIAGRAM FOR AX144 UTUA07524TA Printed in The Philippines J _ _ _...

Page 16: ...ponent will at our discr tion will be replaced without charge when the defective product is delivered to the warrantor at 345 Princes High way Rockdale N S W 2216free and elear of ail liens and encumb...

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