Uniden AX 144 owner manual Base Station Operation

Models: AX 144

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BASE STATION OPERATION

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 distances. A standard antenna connector (Type SO-239) is provided on the transceiver for easy connection to a standard PL-259cable termination.

When installed in a boat, the transceiver will perform most efficiently when antenna used has been specifically designed for marine applications.

Before installing the transceiver in a boat, consult your dealer for information

regarding an adequate grounding system and prevention of electrolysis between fitt- ings in the hull and water.

BASE STATION OPERATION

To operate the transceiver from your home or office, using regular house current as the power source, you will require a separate 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 DC terminals of the power supply.

NOTE:

Do not attempt to operate th is transceiver by connectin.g directly to 117V AC. When AC power supply is used with the transceiver for base station

operation any Citizens Band beam, dipole, ground plane or vertical antenna may be used. A ground plane vertical antenna wi II provide the most uniform

horizontal coverage.

REMOTE SPEAKER

The external speaker jack (EXT. SPKR) on the rear panel is used for remote receiver monitoring. The external speaker should have 8 ohms impedance. When the external speaker is plugged in, the internal speaker is disconnected.

PUBLIC ADDRESS

An external 8 ohm 4-wattspeaker must be connected to the (PA SPKR) jack located on the rear panel when the transceiver is used as a public address system. The speaker should be directed away from the microphone to prevent acoustic feedback. Physical

separation or isolation of the microphone and speaker is important when operating

the PA at high output levels.

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Uniden AX 144 owner manual Base Station Operation