Uniden MC-4700 manual General Information Ground Connection, Antenna

NOTE: See ground connection under GENERAL INFORMATION for more de- tail.

4.Connect the black wire to ground. Consult a marine electrician if in doubt. Any convenient location with good electrical contact may be used. (remove paint).

5.Mount the microphone hanger on the side of the unit or near the unit, using two screws supplied. When mounting in a boat, 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.

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 power lead to the chassis or vehicle frame or (-) battery terminal.

2.Positiveground system: In the case of positive ground system, connect the Black power lead from the radio to the negative or (-)battery terminal or other con-

venient point, and connect the Red power lead to the chassisor vehicleframe or

(+) battery terminal. .

ANTENNA

This radio is designed to operate into a 52 ohm RADIO antenna. Best results will be

obtained from your transceiver if you use a good antenna, properly installed.

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 wh ip.

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-clirectional. A slight directional characteristic will be observed only at extreme

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

When installed in a boat, the transceiver will perform most efficiently when antenna

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