Uniden AX 144 manual


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First and foremost, an user manual of Uniden AX 144 should contain:
- informations concerning technical data of Uniden AX 144
- name of the manufacturer and a year of construction of the Uniden AX 144 item
- rules of operation, control and maintenance of the Uniden AX 144 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

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Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Uniden AX 144 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Uniden AX 144, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Uniden service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Uniden AX 144.

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It is mostly in the manuals where we will find the details concerning construction and possibility of the Uniden AX 144 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

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Table of contents for the manual

  • Page 1

    . , r' -=:::::::: uniden " AX 144 CB RADIO OWNERS MANUAL -- n ----- ---.[...]

  • 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[...]

  • 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[...]

  • 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 [...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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[...]

  • 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 [...]

  • 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[...]

  • 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:: - ------[...]

  • Page 15

    - 14- - I 1 , -----[...]

  • 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[...]

  • 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[...]