User's Manual
20-466 Owner’s Manual
Page 6
406-1300 MHz Collapsed fully
Connecting an Outdoor Antenna
Instead of the supplied antenna, you can connect an outdoor base-station or mobile antenna (neither
supplied) to your scanner. Your local RadioShack store sells a variety of antennas. Choose the one that
best meets your needs.
When deciding on an outdoor antenna and its location, consider these points.
When deciding on an outdoor antenna and its location, consider these points:
. The antenna should be located as high as possible.
. Then antenna and antenna cable should be as far as possible from sources of electrical noises
(appliances, other radios, and so on).
. The antenna should be vertical for the best performance.
To connect an optional base-station or mobile antenna, first remove the supplied antenna from the scanner.
Always use 50 ohm coaxial cable, such as RG-58 or RG-8, to connect the base-station or mobile antenna.
For lengths over 50 feet, use RG-8 low-loss dielectric coaxial cable. If the antenna’s cable does not have a
BNC connector, you will also need a BNC adapter (also available at your local RaddioShack store). Your
local RadioShack store carries a wide variety of coaxial antenna cable and connectors.
Once you choose an antenna, follow the mounting instructions supplied with the antenna. Then route the
antenna’s cable to the scanner and connect the cable to the ANT connector.
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.
Caution: Do not run the cable over sharp edges or moving parts that might damage it.
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) front 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.