13
Troubleshooting
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 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.
CARE
To enjoy your CB for a long time, keep the
CB dry. If it gets wet, wipe it dry immediately.
Use and store the CB only in normal
temperature environments. Handle the CB
gently and carefully. Do not drop it. Keep the
CB away from dust and dirt. Wipe the CB
with a damp cloth occasionally to keep it
looking new.
Modifying or tampering with the CB’s internal
components can cause malfunction and
invalidate its warranty and void your FCC
authorization to operate it. If your CB is not
performing as it should, take it to your local
RadioShack store for assistance.
REPLACING THE FUSE
The CB’s 2-amp in-line fuse helps protect
your CB from power surges and short
circuits. When replacement is required, use a
2-amp, slow-blow glass fuse.
Caution: Do not use a fuse with ratings other
than those specified. Doing so might damage
your CB.
Follow these steps to replace the fuse.
1. Make sure the power source and CB are
both off.
2. Hold the fuse holder by both ends, push
the ends together, twist one end
counterclockwise, then pull them apart.
3. Remove the old fuse. If it is blown, insert
a new one of the same type and rating.
If it is not blown, reinsert it.
4. Push the fuse holder ends together and
twist one end clockwise.
21-1706.fm Page 13 Wednesday, January 9, 2002 8:37 AM
