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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
Note
is critical in affecting transmission distance. Only
For optimum performance
a properly matched antenna system will allow
in passenger cars the ideal
maximum power output. Cobra® loaded type
antenna location is on the
antenna models are highly recommended for
center of the roof. Second
most installations. Consult your Cobra® dealer for
choice is on the center of
further details, or visit or website:
the trunk.
www.cobra.com.
Note
Because many newer trucks
feature fiberglass door skins,
the outside mirror must be
grounded to the chassis via
ground strap, if the antenna is
mounted on the mirror bracket.
Note
A standard antenna connector is provided
1
3-way Combination Antennas
on the transceiver for easy connection.
are also available which allow
operation of all three bands
(AM-FM & CB), using a single
antenna. However, this type
Marine Installation
of antenna usually results in
The transceiver will not operate at maximum
less than normal transmit and
efficiency in a boat without a ground plane,
receive range when compared
(unless it has a steel hull). Before attempting
to a standard-type "Single
installation , consult your dealer for information
Band" CB antenna.
regarding an adequate grounding system and
prevention of electrolysis between fittings in the
hull and water.
6
AW-1210041-1B_29NWLTD_CLASSIC_MANL REV_022021.indd 6-7
AW-1210041-1B_29NWLTD_CLASSIC_MANL REV_022021.indd 6-7
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 NW has an automatic
ANT
noise limiter, in some installations ignition
PA.SP. EXT.SP.
+
–
POWER
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.
Ignition Noise Interference
7
2/24/21 2:57 PM
2/24/21 2:57 PM
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