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Engine noise suppression, Front panel controls and indicators – Uniden MC480 User Manual

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ENGINE NOISE SUPPRESSION

Interference from the impulse noise generated by the electrical systems of engines is

sometimes a problem with radios. The MC480 has been designed to be essentially

impervious to ignition impulse noise and alternator noise. However, in some

installations it may be necessary to take measures to further reduce the effect of
noise interference. All DC battery wires, antenna lead, and accessory cables should

be routed away from the engine and engine compartment and from power cabling

carrying particularly high currents.

In severe cases of impulse noise interference, it may be necessary to install a noise

suppression kit that is available from your UNiDEN Dealer.

FRONT PANEL CONTROLS AND INDICATORS

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1. MICROPHONE CONNECTOR . . . Plug your Microphone in here.

2. ON/OFF VOLUME KNOB ... is used to turn on the radio and set the volume

to a comfortable level.

3. SQUELCH KNOB ... is used to quiet background noise when no signal is

being received. Turn the knob just past the pointât which background noise is

objectionable.

4. CHANNEL SELECTOR ... is used to select the desired channel. The channel

is displayed by the LED readout.

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