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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 in
antenna models are highly recommended for
passenger cars the ideal anten-
most installations. Consult your Cobra dealer for
na location is on the center of
further details, or call 773.889.3087 and speak to
the roof. Second choice is on the
a Cobra representative.
center of the trunk.
Note
Because many newer trucks
feature fiberglass door skins,
the outside mirror must be
grounded to the chassis..
Note
3-way Combination Antennas
A standard antenna connector is provided
1
are also available which allow
on the transceiver for easy connection.
operation of all three bands
(AM-FM & CB), using a single
antenna. However, this type of
antenna usually results in less
Marine Installation
than normal transmit and
The transceiver will not operate at maximum effi-
receive range when compared
ciency in a boat without a ground plate, (unless it
to a standard-type "Single
has a steel hull). Before attempting installation ,
Band" CB antenna. Call
consult your dealer for information regarding an
773.889.3087 for further infor-
adequate grounding system and prevention of
mation.
electrolysis between fittings in the hull and water.
6
For Sales Information Please Contact RoadTrucker Inc (www.RoadTrucker.com)
8312 Sidbury Rd.; Wilmington, NC 28411 - (800) 507-0482 / (910) 686-4281
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 back-
ground 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 signifi-
cantly discharge the vehicle's battery.
Even though the Cobra 25 LTD Classic has an
automatic noise limiter, in some installations igni-
tion interference may be high enough to make
good communications impossible. Many possibil-
ities 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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