Radio Shack PRO-433 Quick Start Manual page 7

Quick Start
antenna
Expand the antenna according to the
frequencies you want to montitor:
Frequency ..................................... Antenna Length
25-174 MHz .....................Extend fully (4 segments)
400-512 MHz ................... Extend half (2 segments)
806-1300 MHz ................Collapse fully (1 segment)
The scanner's ANT jack supports a variety of
antennae (available at RadioShack).
•
An external antenna is optional if
you use your scanner as a base
NOTES
station. If you mount your scanner
in your vehicle, you will need to
connect an external antenna.
•
The antenna should be as high
as possible and vertical for best
performance.
•
Keep the antenna and cable as far as possible from
sources of electrical noise, such as appliances or other
radios.
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. You also may need a BNC adapter
(not supplied).
external speaker
To use an external speaker (available at your local RadioShack
store), plug the speaker's 1/8 inch (3.5 mm) plug into the scanner's
EXT SP jack.
Connecting an external speaker mutes the scanner's
NOTE
internal speaker.
CAUTION: Use extreme caution when installing or removing
an outdoor antenna. If the antenna starts to fall, let it go! If the
antenna touches a power line, touching 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.
7
ANT
Match the
antenna
connector
arrow to
the ANT
jack's upper
projection.