User's Manual

20-523 Owner’s Manual
Page 8
as an external mobile antenna or outdoor base station antenna. Your local RadoShack store sells a variety of
antennas.
Always use 50-ohm coaxial cable, such as RG-58 or RG-8, to connect an outdoor antenna. For lengths over
50 feet, use RG-8 low-loss dielectric coaxial cable, If your antenna’s cable does not have a BNC connector,
you will also need a BNC adapter (also available at your local RadioShack store).
Follow the installation instructions supplied with the antenna, route the antenna cable to the scanner, then
connect it to the ANT jack.
Warning: Use extreme caution when installing or removing an outdoor antenna. If the antenna starts to fall,
let it go! It could contact overhead power lines. If the antenna touches a power line, contact with the antenna,
mast, cable or guy wires can cause electrocution and death! Call the power company to remove the antenna.
Do not attempt to do so yourself.
CONNECTING AN EARPHONE/HEADPHONES
For private listening, you can plug an earphone or mono/stereo headphones (not supplied), available at your
local RadoShack store, into the (headphone symbol) jack on top of your scanner. This automatically
disconnects the internal speaker.
Add Illust
Listening Safely
To protect your hearing, follow these guidelines when you use an earphone or headphones:
. Do not listen at extremely high volume levels. Extended high-volume listening can lead to permanent
hearing loss.
. Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume
to a comfortable level.
. Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume
level that does not cause discomfort might still damage your hearing.
Traffic Safety
Do not wear an earphone or headphones while you drive a vehicle or ride a bicycle. This can create a traffic
hazard and can be illegal in some areas.
Even though some earphones and headphones let you hear some outside sounds when you listen at normal
levels, they still can present a traffic hazard.
CONNECTING AN EXTENSION SPEAKER
In a noisy area, an amplified speaker (not supplied), available at your local RadioShack store, might provide
more comfortable listening. Plug the speaker cable’s 1/8-inch (3.5 mm) mini-plug into your scanner’s