Radio Shack 21-1703 A User Manual

•

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 vehicle’s 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.

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 carefully; do not 
drop it. Keep the CB away from dust and dirt, and wipe it with a damp cloth 
occasionally to keep it looking new.

If your CB is not performing as it should, take it to your local RadioShack store 
for assistance. To locate your nearest RadioShack, use the store locator feature 
on RadioShack’s web site (www.radioshack.com), or call 1-800-THE-SHACK 
(843-7422) and follow the menu options. Modifying or tampering with the CB’s 
internal components can cause a malfunction and might invalidate its warranty 
and void your FCC authorization to operate it.

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 (not 
supplied).
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, and pull them apart.

3.

Remove the old fuse and inspect its condition. 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.

Fuse holder

Fuse