20
REDUCING NOISE
Because your CB is exceptionally qui-
et, 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 (Auto-
matic Noise Limiter) circuit and a DSP
(Digital Sound Processor) circuit to re-
duce noise. However, if possible, try to
eliminate the 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 re-
duce 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 suppres-
sion wires.
• Install noise suppressors on your
spark plugs, or install new spark
plugs that have built-in noise sup-
pressors.
• If problems persist, check your
alternator/generator and regula-
tor 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.
21-1598.fm Page 20 Thursday, August 5, 1999 10:52 AM
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