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Antennas
CB Antenna
CB Antenna
Since the maximum allowable power output of
the transmitter is limited by the FCC, the antenna
is critical in affecting transmission distance. Only
a properly matched antenna system will allow
Note
maximum power output. Cobra loaded type
For optimum performance
antenna models are highly recommended for
in passenger cars the ideal
most installations. For models with Weather
antenna location is on the
Feature (WX), a Dual Band (Center Load/Base
center of the roof. Second
Load) antenna is recommended. Consult your
choice is on the
Cobra dealer for further details, or visit our
center of the trunk.
website: www.cobra.com
Note
Because many newer trucks
feature fiberglass door skins,
the outside mirror must be
grounded to the chassis via a
ground strap, if the antenna is
mounted on the mirror bracket.
Note
A standard antenna connector is provided
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3-way Combination Antennas
on the transceiver for easy connection.
are also available which allow
operation of all three bands
Marine Installation
(AM-FM & CB), using a single
The transceiver will not operate at maximum
antenna. However, this type
efficiency in a boat without a ground plate,
of antenna usually results in
(unless it has a steel hull). Before attempting
less than normal transmit and
installation , consult your dealer for information
receive range when compared
regarding an adequate grounding system and
to a standard-type "Single
prevention of electrolysis between fittings in the
Band" CB antenna.
hull and water.
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Ignition Noise Interference
Use of a mobile receiver at low signal levels is
normally limited by the presence of electrical
noise. The primary source of noise in automobiles
is from the alternator and ignition system.
Typically, when signal level is adequate, the
background noise does not present a serious
problem. Also, when extremely low level signals
are being received, the transceiver may be
operated with the vehicle's engine turned off.
The unit requires very little current and therefore
will not significantly discharge the vehicle's
battery.
Even though the Cobra 29 LX OEM B has an
automatic noise limiter, in some installations
ignition interference may be high enough to
make good communications impossible. Many
possibilities exist and variations between vehicles
require
different solutions. Consult your Cobra dealer or
a 2-way radio technician for help in locating the
source of a severe noise.
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