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SPECIFICATIONS

GENERAL

Channels

40 AM,  40  LSB,  40 USB

Frequency  Range

26.965  to 27.405  MHz

Frequency  Control

Phase  Locked  Loop(PLL)  synthesized circuitry

Frequency  Tolérance

±0.005%

Frequency  Stability

0.001%

Operating Température  Range

•10 °C  to +50°C

Microphone

Plug-in  type;  dynamie  w ith  push-to-talk  switch 

and  coiled  cord

Input  Voltage

13.8V  DC  nominal,  15.9V  max.,  11.7V  min. 

(positive  or  negative  ground).

Current  Drain

Transmit:  AM  fü ll  mod.,  2.2A;  SSB  Maximum 

output,  2A.
Receiver: 

AM  &  SSB  with  maximum  audio 

output,  0.6A.

Cabinet  Dimensions

7-9/32(W)  x  9-5/64Ю)  x  2-9/32(H)

Weight

4.5  Lbs

Antenna 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  receive  LED.

Indicators

LED  display;  channel,  emergency  channel,  Т Х / 

RX  and  mode.

TRANSMITTER

Power  O utput

AM,SSB Maximum Legal Output  Power

Modulation

AM,  high  and  low level  Class  B

Intermodulation  Distortion

SSB:  3rd  and  5th  order,  better than  -25  dB. 

7th  and  9th  order,  better than -35  dB.

SSB  Carrier Suppression

Better  than  -55 dB

Unwanted  Sideband

Better  than  -50 dB

Frequency  Response

AM  and  SSB:  350 to 2500  Hz.

O utput  Impédance

52  ohms, unbalanced

SSB  Filter

10.695  MHz,  8 pole  m onolithic type 

6 dB  @4.2  kHz 

60 dB  @7.0  kHz

O utput  Indicators

Meter  shows  relative  RF  output  power;  red 
transmit  LED.

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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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