User's Manual
Table Of Contents
20-315 Owner’s Manual
Page 10
Connecting an Outdoor Antenna
The antenna connector on your scanner makes it easy to use the scanner with a variety of
antennas, such as an external mobile antenna or outdoor base station antenna. Your local
RadioShack 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 the antenna cable’s
connector does not have a BNC connector, you will also need a BNC adapter (not supplied,
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 antenna jack.
Warning: Use extreme caution when you 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 1/8
-inch (3.5-mm) mini-plug earphone or
headphones (not supplied), available at your local RadioShack store, into the (headphone
symbol mark) jack on the top of the scanner. This automatically disconnects the internal
speaker.
Listening Safely
To protect your hearing, follow these guidelines when you use an earphone or
headphones.
• Set the volume to the lowest setting before you begin listening. After you begin listening,
adjust the volume to a comfortable level.
• Do not listen at extremely high volume levels. Extended high-volume listening can lead to
permanent hearing loss.
• 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.