7
PREPARATION
CONNECTING AN
ANTENNA
Connecting the Telescoping
Antenna
The supplied telescoping antenna
helps your scanner receive strong lo-
cal signals. To install this antenna,
hold the antenna so it stands straight
up, then gently push the antenna’s
plug onto the
ANT
jack on the scan-
ner’s back panel.
The scanner’s sensitivity depends on
the antenna’s length and various envi-
ronmental conditions. Based on the
frequencies of the transmissions you
want to hear, adjust the antenna’s
length.
Connecting the Window-
Mount Antenna
You can install the supplied window-
mount antenna on the inside of your ve-
hicle’s windshield. Follow these steps to
install the window-mount antenna.
Caution: Do not use the window-
mount antenna on a windshield that
has a plastic coating designed to pro-
tect passengers during an accident. If
you use the antenna on this type of
windshield, you might permanently
damage the windshield’s surface.
1. Select a location for the window-
mount antenna. Follow these
mounting guidelines when se-
lecting a location.
• The antenna’s clear wire re-
ceives signals. Mount it verti-
cally against the far right (pas-
senger) side of the windshield.
• Choose a location that does not
block the driver’s view of the
road.
• Some vehicles have Insta-
Clear
®
or ElectriClear
®
defog-
ging windshields, which have
metal coatings that interfere
with signals. General Motor’s
APV vans have a solar shield
that keeps the vehicle cooler
during the summer, which also
interferes with signals. If you
install a window-mount antenna
in a vehicle with any of these
features, the scanner probably
will not detect weak signals.
Frequency
(MHz)
Antenna Length
29–108
Extend fully
108–174
Extend three
segments
174–512 Extend
two
segments
ANT Jack
20-147.fm Page 7 Tuesday, August 3, 1999 3:23 PM
