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Reducing Noise
13
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Because your CB is exceptionally quiet, any noise you hear
is probably from an external source in your vehicle such as
the alternator, another radio or spark plugs.
The transceiver uses an ANL (Automatic Noise Limiter)
circuit to reduce noise. However, if possible, try to eliminate
noise by finding its source.
You can determine the noise’s source by turning off the
engine and operating the CB with your vehicle’s ignition set
to ACC. If the noise is reduced, the problem is in your
vehicle’s ignition or electrical system.
Here are a few hints to help you reduce or eliminate such
noise:
• Make all CB power and antenna wires as short as
possible.
• Route the power wires away from the antenna wires.
• Be sure that the chassis ground connection is secure.
• Replace old ignition wires with new, high-voltage, noise
suppression wires.
• Install noise suppressors on your spark plugs, or install
new spark plugs that have built-in noise suppressors.
• If problems persist, check your alternator/generator and
regulator gauges. You can reduce the noise from these
sources by using bypass capacitors at the various
output voltage points.
Your local RadioShack store has a wide selection of noise
suppression accessories.