Uniden AX 144 User Manual
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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 tor more detail.
4. Connect the black wire to ground. This is usualiy the chassis of the car. Any con
venient location with good electrical contact may be used, (remove paintl.
5. Mount the microphone hanger on the side of the unit or near the unit, using two
screws supplied. When mounting in an automobile, place the hanger on the dash
so the microphone is easily accessible.
GENERAL INFORMATION
GROUND CONNECTION
This radio may be installed and used in any 12V DC negative or positive ground
system vehicle. Most new U.S. and foreign made cars or small trucks use a negative
ground system while some older cars and some newer large trucks may use a positive
ground system.
1. Negative ground system: Connect the Red power lead from the radio to the
positive or [-t) battery terminal or other convenient point, and connect the Black
power lead to the chassis or vehicle frame or (-) battery terminal.
2. Positive ground system: In the case of positive ground system, connect the Black
power lead from the radio to the negative or (-| battery terminal or other
convenient point, and connect the Red power lead to the chassis or vehicle frame
or (+) battery terminal.
ANTENNA
This radio is designed to operate into a 52 ohm CITIZENS RADIO antenna. Best
results will be obtained from your transceiver if you use a good antenna, properly
installed. (Refer to the antenna installation instructions included with your antenna.)
A vertically polarized quarter-wavelength whip antenna provides the most reliable
operation and greater range. The shorter loaded-type whip antennas are more at
tractive, compact and adequate for applications where the maximum possible dis
tance is not required. Also, the loaded whip antennas do not present the problems of
height imposed by the full quarter-wavelength whip.
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