16
REDUCING NOISE
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 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 prob-
lem is in your vehicle’s ignition or electri-
cal 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 sup-
pressors.
• If problems persist, check your vehi-
cle’s alternator/generator and regu-
lator 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 accesso-
ries.
21-1703a.fm Page 16 Thursday, August 5, 1999 4:41 PM
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