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Uniden AX 144 - page 1
. , r' -=:::::::: uniden " AX 144 CB RADIO OWNERS MANUAL -- n ----- ---. ...
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Uniden AX 144 - page 2
L -- --- -. RADIO BACK PANEL VIEW EXTERNAL SPEAKER PA Jack SPEAKER Jack POWE R Cord Jack ANT SERIAL,NO ANTENNA Connector SERIAL NUMBER I MPORT ANT! The above pictorial display shows the location of the various accessory, antenna, and power receptacles, as well as the SERIAL NUMBER. You are urged to record your model number and your SERIAL NUMBER in ...
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Uniden AX 144 - page 3
~.n GENERAL Channels Frequency Range Frequency Control Frequency Tolerance Frequency Stability Operating Temperature Range Microphone Input Voltage Current Drain Cabinet Dimensions Weight Antenna Connector Semiconductors Meter Indicators TRANSMITTER Power Output Modulation Intermodulation Distortion SSB Carrier Suppression Unwanted Sideband Frequen ...
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Uniden AX 144 - page 4
RECEIVER Sensitivity Selectivity Cross Modulation Image Rejection t.F. Frequency AM and SSB RF Gain Control Automatic Gain Control Squelch Noise Blanker Clarifier Range Audio Output Power Frequency Response Distortion Built-in Speaker External Speaker (Not Supplied) PA SYSTEM Power Output External Speaker for P A SSB: Better than ,25 p V for 10 dB ...
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Uniden AX 144 - page 5
INTRODUCTION UNIDEN has combined superb workmanship and modern styling with the very la- test state-of-art circuitry to bring you the new AX 144 Citizens Band Transceiver. It has been especially designed to give you maximum performance and reliability. YourAX 144 is completely factory aligned and quality assurance tested. To obtain the maximum bene ...
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Uniden AX 144 - page 6
~ , == CHANNEL INFORMATION To insure that you obtain the maximum performance from this 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 synthesizing circuit with Phase Locked Loop(PLL) techniques to pr ...
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Uniden AX 144 - page 7
INSTAllATION Location Plan the location of the transceiver and microphone bracket before starting the installation. Select a location that is convenient for operation and does not interfere with the driver or passenger in the vehicle. In automobiles, the transceiver is usually mounted to the dash panel with the microphone bracket beside it. Mountin ...
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Uniden AX 144 - page 8
~= .-'--' This prevents the set being left on accidentally when the driver leaves the car and also permits operating the radio without the engine running. You can locate the accessory contact on most ignition switches by tracing the power wire from the AM broadcast receiver in the car. Note: See ground connection under GENERAL INFORMATION ...
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Uniden AX 144 - page 9
Mobile whip antennas utilize the metal body of the vehicle as a ground plane. When mounted on a corner of the vehicle, they are slightly directional, in the direction of the body of the vehicle. For all practical purposes, however, the radiation pattern is non-directional. A slight directional characteristic wi 11be observed only at extreme distanc ...
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Uniden AX 144 - page 10
~ ' -, OPERATING INSTRUCTIONS The AX 144 operates 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 Iow pitched, indicating that your receiver may not be tuned to the exact same frequency as the transmitter to which i ...
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Uniden AX 144 - page 11
,~ ~ T 4. SQUELCH: The squelch control is normally set to a position which just eliminates undesired background noise with no signal present. With the audio volume adjusted to a satisfactory level, rotate the Squelch control clockwise to the point where the sound from the speaker is cut off. In this position, there will be no sound from the speaker ...
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Uniden AX 144 - page 12
<:::::::e: - - INDICATOR FUNCTION 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 illumination can be adjusted by the DIMMER switch for optimum brightness. TX/RX INDICATOR: The TX/RX light in the upper right corner ...
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Uniden AX 144 - page 13
WARNING Oper:ation of this equipment requires a valid station license issued by the Depart- ment of Communication Do not transmit with your equipment until you have a license. - 12- 1 r- t ...
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Uniden AX 144 - page 14
<::::; --- n .- -~ MAINTENANCE AND ADJUSTMENT This transceiver is especially designed for the environment encountered in mobile installations. The use of all solid state circuitry and its light weight result in high reliability. Should failure occur, however, replace parts only with identical parts. Do not substitute. -13 - ~ F:: - ------ ...
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Uniden AX 144 - page 15
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Uniden AX 144 - page 16
.~ V! n; !~ CIRCUIT DIAGJAM FOR AX144 r------------------------------------------------ I PC-833 I I TRI 2SCI675L I I I I I I J I I I I I I I I I I I I I I I I I .'0' PI-ooe , I I I I I I I I I 0404-' I .O/ANC I I I I I I I I I I I I J ~ I I I I I I I I I I I I I I I I I I I I I I UTUAO7524T A Printed in The Philippines ...
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Uniden AX 144 - page 17
UTUAO1524TC x: uniden@ 12 MONTHS FULL WARRANTY WARRANTOR: UNIDEN AUSTRALIA PTY. LTD. 345 Princes Highway, Rockdale, N.S.W. 2216 ("UNIDEN"). ELEMENTS OF WARRANTY. Uniden Australia warrants, for the duration of this war- ranty, its UNIDEN CB Product to be free from defects in materials and craftsmanship with only the limitation or exclusion ...
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