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1. 

S/RF  METER:  This  meter  displays  relative  transmitter  RF  output  power  when 

transmitting,  and  input  signal  strength  when  receiving.  The  meter  is  illuminated 

when  power  is  on,  the  illum ination  сап  be  adjusted  by  the  DIMMER  switch  for 

optimum  brightness.

2. 

T X /R X   INDICATOR:  The  T X /R X   light  in  the  upper  right  corner  of  the  fron t 

panel  lights  in  red  color  when  the  microphone  button  is  pressed  and  transmitter 

is  in  operation.  It  lights  in  green  color  when  the  microphone  button  is  released 

and the  receiver  is  in  operation.

PRESS  TO  T A LK   MICROPHONE

The  receiver  and  transmitter  are  controlled  by  the  press-to-talk  switch  on  the

microphone.  Press  the  switch  and  the  transmitter  is  activated.  Release  the  switch

to  receive.  When  transmitting,  hołd  the  microphone  about  three  inches  from   your

mouth  and  speak  at  a  normal  voice  level.

RECEIVE  OPERATING  PROCEDURE

1. 

Place  the  CB-РА switch  in  CB  position.

2. 

Turn  the  set  on  by  turning the  VOLUME  CONTROL  clockwise,  past click. 

NOTE:  Microphone  must  be  plugged  in  for receiver  to operate.

3. 

Set the  VOLUME  CONTROL  to a  comfortable  level.

4. 

Set the  Mode  Selector Switch  to the desired  mode.

5. 

Listen  to  the  background  noise  from   the  speaker.  Turn  the  SQUELCH 

CONTROL  slowly  clockwise,  until  the  noise just disappears. The Squelch  is now 

properly  adjusted.  The  receiver  w ill  remain  quiet  until  a  signal  is  received.  Do 

not advance  the  control  too  far,  or some  of  the weaker signais  w ill  not be  heard.

6. 

Set the  Channel  Selector  to the  desired channel.

7. 

Adjust the  CLARIFIER  to clearly  receive SSB  or  AM  signais.

TRANSMIT  OPERATING  PROCEDURE

1. 

Select the  desired channel  of  transmission.

2. 

If  the  channel  is  elear,  depress  the  push-to-talk  switch  on  the  microphone  and 

speak  in  a  normal  voice.

INDICATOR  FUNCTION

-   11  -

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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